public override void PerformTest()
{
CommitmentTypeIndication cti = new CommitmentTypeIndication(CommitmentTypeIdentifier.ProofOfOrigin);
CheckConstruction(cti, CommitmentTypeIdentifier.ProofOfOrigin, null);
Asn1Sequence qualifier = new DerSequence(new DerObjectIdentifier("1.2"));
cti = new CommitmentTypeIndication(CommitmentTypeIdentifier.ProofOfOrigin, qualifier);
CheckConstruction(cti, CommitmentTypeIdentifier.ProofOfOrigin, qualifier);
cti = CommitmentTypeIndication.GetInstance(null);
if (cti != null)
{
Fail("null GetInstance() failed.");
}
try
{
CommitmentTypeIndication.GetInstance(new object());
Fail("GetInstance() failed to detect bad object.");
}
catch (ArgumentException)
{
// expected
}
}
public RecipientInfo Generate(KeyParameter contentEncryptionKey, SecureRandom random)
{
byte[] keyBytes = contentEncryptionKey.GetKey();
string rfc3211WrapperName = Helper.GetRfc3211WrapperName(keyEncryptionKeyOID);
IWrapper keyWrapper = Helper.CreateWrapper(rfc3211WrapperName);
// Note: In Java build, the IV is automatically generated in JCE layer
int ivLength = Platform.StartsWith(rfc3211WrapperName, "DESEDE") ? 8 : 16;
byte[] iv = new byte[ivLength];
random.NextBytes(iv);
ICipherParameters parameters = new ParametersWithIV(keyEncryptionKey, iv);
keyWrapper.Init(true, new ParametersWithRandom(parameters, random));
Asn1OctetString encryptedKey = new DerOctetString(
keyWrapper.Wrap(keyBytes, 0, keyBytes.Length));
DerSequence seq = new DerSequence(
new DerObjectIdentifier(keyEncryptionKeyOID),
new DerOctetString(iv));
AlgorithmIdentifier keyEncryptionAlgorithm = new AlgorithmIdentifier(
PkcsObjectIdentifiers.IdAlgPwriKek, seq);
return new RecipientInfo(new PasswordRecipientInfo(
keyDerivationAlgorithm, keyEncryptionAlgorithm, encryptedKey));
}
public int GenerateBytes(byte[] outBytes, int outOff, int len)
{
// TODO Create an ASN.1 class for this (RFC3278)
// ECC-CMS-SharedInfo
var s = new DerSequence(
new AlgorithmIdentifier(_algorithm, DerNull.Instance),
new DerTaggedObject(true, 2, new DerOctetString(IntegerToBytes(_keySize))));
_kdf.Init(new KdfParameters(_z, s.GetDerEncoded()));
return _kdf.GenerateBytes(outBytes, outOff, len);
}
public virtual int GenerateBytes(byte[] outBytes, int outOff, int len)
{
// TODO Create an ASN.1 class for this (RFC3278)
// ECC-CMS-SharedInfo
DerSequence s = new DerSequence(
new AlgorithmIdentifier(algorithm, DerNull.Instance),
new DerTaggedObject(true, 2, new DerOctetString(Pack.UInt32_To_BE((uint)keySize))));
kdf.Init(new KdfParameters(z, s.GetDerEncoded()));
return kdf.GenerateBytes(outBytes, outOff, len);
}
public int GenerateBytes(
byte[] outBytes,
int outOff,
int len)
{
// ECC-CMS-SharedInfo
DerSequence s = new DerSequence(
new AlgorithmIdentifier(algorithm, DerNull.Instance),
new DerTaggedObject(true, 2, new DerOctetString(integerToBytes(keySize))));
kdf.Init(new KdfParameters(z, s.GetDerEncoded()));
return kdf.GenerateBytes(outBytes, outOff, len);
}
public void TestFormatSignature()
{
var random = new Random();
var dsa_key = new SshKey(SshVersion.SSH2, new DsaPublicKeyParameters (
new BigInteger ("1"),
new DsaParameters(new BigInteger ("2"), new BigInteger ("3"),
new BigInteger ("4"))));
// test that dsa signature works when values are not full 20 bytes.
byte[] r_bytes = new byte[19];
byte[] s_bytes = new byte[19];
random.NextBytes(r_bytes);
random.NextBytes(s_bytes);
var r = new DerInteger(r_bytes);
var s = new DerInteger(s_bytes);
var sequence = new DerSequence(r, s);
var signature = dsa_key.FormatSignature(sequence.GetEncoded());
Assert.That(signature.Count(), Is.EqualTo(40));
}
internal RecipientInfo ToRecipientInfo(
KeyParameter key,
SecureRandom random)
{
byte[] keyBytes = key.GetKey();
if (pubKey != null)
{
IWrapper keyWrapper = Helper.CreateWrapper(keyEncAlg.ObjectID.Id);
keyWrapper.Init(true, new ParametersWithRandom(pubKey, random));
Asn1OctetString encKey = new DerOctetString(
keyWrapper.Wrap(keyBytes, 0, keyBytes.Length));
RecipientIdentifier recipId;
if (cert != null)
{
TbsCertificateStructure tbs = TbsCertificateStructure.GetInstance(
Asn1Object.FromByteArray(cert.GetTbsCertificate()));
Asn1.Cms.IssuerAndSerialNumber encSid = new Asn1.Cms.IssuerAndSerialNumber(
tbs.Issuer, tbs.SerialNumber.Value);
recipId = new RecipientIdentifier(encSid);
}
else
{
recipId = new RecipientIdentifier(subKeyId);
}
return new RecipientInfo(new KeyTransRecipientInfo(recipId, keyEncAlg, encKey));
}
else if (originator != null)
{
IWrapper keyWrapper = Helper.CreateWrapper(
DerObjectIdentifier.GetInstance(
Asn1Sequence.GetInstance(keyEncAlg.Parameters)[0]).Id);
keyWrapper.Init(true, new ParametersWithRandom(secKey, random));
Asn1OctetString encKey = new DerOctetString(
keyWrapper.Wrap(keyBytes, 0, keyBytes.Length));
RecipientEncryptedKey rKey = new RecipientEncryptedKey(
new KeyAgreeRecipientIdentifier(
new Asn1.Cms.IssuerAndSerialNumber(
PrincipalUtilities.GetIssuerX509Principal(cert),
cert.SerialNumber)),
encKey);
return new RecipientInfo(
new KeyAgreeRecipientInfo(originator, ukm, keyEncAlg, new DerSequence(rKey)));
}
else if (derivationAlg != null)
{
string rfc3211WrapperName = Helper.GetRfc3211WrapperName(secKeyAlgorithm);
IWrapper keyWrapper = Helper.CreateWrapper(rfc3211WrapperName);
// Note: In Java build, the IV is automatically generated in JCE layer
int ivLength = rfc3211WrapperName.StartsWith("DESEDE") ? 8 : 16;
byte[] iv = new byte[ivLength];
random.NextBytes(iv);
ICipherParameters parameters = new ParametersWithIV(secKey, iv);
keyWrapper.Init(true, new ParametersWithRandom(parameters, random));
Asn1OctetString encKey = new DerOctetString(
keyWrapper.Wrap(keyBytes, 0, keyBytes.Length));
// byte[] iv = keyWrapper.GetIV();
DerSequence seq = new DerSequence(
new DerObjectIdentifier(secKeyAlgorithm),
new DerOctetString(iv));
keyEncAlg = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdAlgPwriKek, seq);
return new RecipientInfo(new PasswordRecipientInfo(derivationAlg, keyEncAlg, encKey));
}
else
{
IWrapper keyWrapper = Helper.CreateWrapper(keyEncAlg.ObjectID.Id);
keyWrapper.Init(true, new ParametersWithRandom(secKey, random));
Asn1OctetString encKey = new DerOctetString(
keyWrapper.Wrap(keyBytes, 0, keyBytes.Length));
return new RecipientInfo(new KekRecipientInfo(secKeyId, keyEncAlg, encKey));
}
}
public RecipientInf(
string secKeyAlgorithm, // TODO Can get this from secKey?
KeyParameter secKey,
string algorithm,
string wrapOid,
OriginatorIdentifierOrKey originator,
X509Certificate cert)
{
DerSequence paramSeq = new DerSequence(
new DerObjectIdentifier(wrapOid),
DerNull.Instance);
this.secKeyAlgorithm = secKeyAlgorithm;
this.secKey = secKey;
this.keyEncAlg = new AlgorithmIdentifier(new DerObjectIdentifier(algorithm), paramSeq);
this.originator = originator;
this.cert = cert;
}
private BasicOcspResp GenerateResponse(
string signatureName,
IAsymmetricKeyParameter privateKey,
X509Certificate[] chain,
DateTime producedAt,
SecureRandom random)
{
DerObjectIdentifier signingAlgorithm;
try
{
signingAlgorithm = OcspUtilities.GetAlgorithmOid(signatureName);
}
catch (Exception e)
{
throw new ArgumentException("unknown signing algorithm specified", e);
}
Asn1EncodableVector responses = new Asn1EncodableVector();
foreach (ResponseObject respObj in list)
{
try
{
responses.Add(respObj.ToResponse());
}
catch (Exception e)
{
throw new OcspException("exception creating Request", e);
}
}
ResponseData tbsResp = new ResponseData(responderID.ToAsn1Object(), new DerGeneralizedTime(producedAt), new DerSequence(responses), responseExtensions);
ISigner sig = null;
try
{
sig = SignerUtilities.GetSigner(signatureName);
if (random != null)
{
sig.Init(true, new ParametersWithRandom(privateKey, random));
}
else
{
sig.Init(true, privateKey);
}
}
catch (Exception e)
{
throw new OcspException("exception creating signature: " + e, e);
}
DerBitString bitSig = null;
try
{
byte[] encoded = tbsResp.GetDerEncoded();
sig.BlockUpdate(encoded, 0, encoded.Length);
bitSig = new DerBitString(sig.GenerateSignature());
}
catch (Exception e)
{
throw new OcspException("exception processing TBSRequest: " + e, e);
}
AlgorithmIdentifier sigAlgId = OcspUtilities.GetSigAlgID(signingAlgorithm);
DerSequence chainSeq = null;
if (chain != null && chain.Length > 0)
{
Asn1EncodableVector v = new Asn1EncodableVector();
try
{
for (int i = 0; i != chain.Length; i++)
{
v.Add(
X509CertificateStructure.GetInstance(
Asn1Object.FromByteArray(chain[i].GetEncoded())));
}
}
catch (IOException e)
{
throw new OcspException("error processing certs", e);
}
catch (CertificateEncodingException e)
{
throw new OcspException("error encoding certs", e);
}
chainSeq = new DerSequence(v);
}
return new BasicOcspResp(new BasicOcspResponse(tbsResp, sigAlgId, bitSig, chainSeq));
}
internal Asn1Object ReadTaggedObject(bool constructed, int tag)
{
if (!constructed)
{
DefiniteLengthInputStream definiteLengthInputStream = (DefiniteLengthInputStream)_in;
return(new DerTaggedObject(explicitly: false, tag, new DerOctetString(definiteLengthInputStream.ToArray())));
}
Asn1EncodableVector asn1EncodableVector = ReadVector();
if (_in is IndefiniteLengthInputStream)
{
return((asn1EncodableVector.Count != 1) ? new BerTaggedObject(explicitly: false, tag, BerSequence.FromVector(asn1EncodableVector)) : new BerTaggedObject(explicitly: true, tag, asn1EncodableVector[0]));
}
return((asn1EncodableVector.Count != 1) ? new DerTaggedObject(explicitly: false, tag, DerSequence.FromVector(asn1EncodableVector)) : new DerTaggedObject(explicitly: true, tag, asn1EncodableVector[0]));
}
private static byte[] BuildOCSPResponse(byte[] BasicOCSPResponse) {
DerOctetString doctet = new DerOctetString(BasicOCSPResponse);
Asn1EncodableVector v2 = new Asn1EncodableVector();
v2.Add(OcspObjectIdentifiers.PkixOcspBasic);
v2.Add(doctet);
DerEnumerated den = new DerEnumerated(0);
Asn1EncodableVector v3 = new Asn1EncodableVector();
v3.Add(den);
v3.Add(new DerTaggedObject(true, 0, new DerSequence(v2)));
DerSequence seq = new DerSequence(v3);
return seq.GetEncoded();
}
public byte[] GetSignature()
{
MPInteger[] sigValues = sigPck.GetSignature();
byte[] signature;
if (sigValues != null)
{
if (sigValues.Length == 1) // an RSA signature
{
signature = sigValues[0].Value.ToByteArrayUnsigned();
}
else
{
try
{
signature = new DerSequence(
new DerInteger(sigValues[0].Value),
new DerInteger(sigValues[1].Value)).GetEncoded();
}
catch (IOException e)
{
throw new PgpException("exception encoding DSA sig.", e);
}
}
}
else
{
signature = sigPck.GetSignatureBytes();
}
return signature;
}
private Asn1Object CreateDERForRecipient(byte[] inp, X509Certificate cert) {
String s = "1.2.840.113549.3.2";
byte[] outp = new byte[100];
DerObjectIdentifier derob = new DerObjectIdentifier(s);
byte[] keyp = IVGenerator.GetIV(16);
IBufferedCipher cf = CipherUtilities.GetCipher(derob);
KeyParameter kp = new KeyParameter(keyp);
byte[] iv = IVGenerator.GetIV(cf.GetBlockSize());
ParametersWithIV piv = new ParametersWithIV(kp, iv);
cf.Init(true, piv);
int len = cf.DoFinal(inp, outp, 0);
byte[] abyte1 = new byte[len];
System.Array.Copy(outp, 0, abyte1, 0, len);
DerOctetString deroctetstring = new DerOctetString(abyte1);
KeyTransRecipientInfo keytransrecipientinfo = ComputeRecipientInfo(cert, keyp);
DerSet derset = new DerSet(new RecipientInfo(keytransrecipientinfo));
Asn1EncodableVector ev = new Asn1EncodableVector();
ev.Add(new DerInteger(58));
ev.Add(new DerOctetString(iv));
DerSequence seq = new DerSequence(ev);
AlgorithmIdentifier algorithmidentifier = new AlgorithmIdentifier(derob, seq);
EncryptedContentInfo encryptedcontentinfo =
new EncryptedContentInfo(PkcsObjectIdentifiers.Data, algorithmidentifier, deroctetstring);
Asn1Set set = null;
EnvelopedData env = new EnvelopedData(null, derset, encryptedcontentinfo, set);
Org.BouncyCastle.Asn1.Cms.ContentInfo contentinfo =
new Org.BouncyCastle.Asn1.Cms.ContentInfo(PkcsObjectIdentifiers.EnvelopedData, env);
return contentinfo.ToAsn1Object();
}
public RecipientInfo Generate(KeyParameter contentEncryptionKey, SecureRandom random)
{
byte[] keyBytes = contentEncryptionKey.GetKey();
IAsymmetricKeyParameter senderPublicKey = senderKeyPair.Public;
ICipherParameters senderPrivateParams = senderKeyPair.Private;
OriginatorIdentifierOrKey originator;
try
{
originator = new OriginatorIdentifierOrKey(
CreateOriginatorPublicKey(senderPublicKey));
}
catch (IOException e)
{
throw new InvalidKeyException("cannot extract originator public key: " + e);
}
Asn1OctetString ukm = null;
if (keyAgreementOID.Id.Equals(CmsEnvelopedGenerator.ECMqvSha1Kdf))
{
try
{
IAsymmetricCipherKeyPairGenerator ephemKPG =
GeneratorUtilities.GetKeyPairGenerator(keyAgreementOID);
ephemKPG.Init(
((ECPublicKeyParameters)senderPublicKey).CreateKeyGenerationParameters(random));
IAsymmetricCipherKeyPair ephemKP = ephemKPG.GenerateKeyPair();
ukm = new DerOctetString(
new MQVuserKeyingMaterial(
CreateOriginatorPublicKey(ephemKP.Public), null));
senderPrivateParams = new MqvPrivateParameters(
(ECPrivateKeyParameters)senderPrivateParams,
(ECPrivateKeyParameters)ephemKP.Private,
(ECPublicKeyParameters)ephemKP.Public);
}
catch (IOException e)
{
throw new InvalidKeyException("cannot extract MQV ephemeral public key: " + e);
}
catch (SecurityUtilityException e)
{
throw new InvalidKeyException("cannot determine MQV ephemeral key pair parameters from public key: " + e);
}
}
DerSequence paramSeq = new DerSequence(
keyEncryptionOID,
DerNull.Instance);
AlgorithmIdentifier keyEncAlg = new AlgorithmIdentifier(keyAgreementOID, paramSeq);
Asn1EncodableVector recipientEncryptedKeys = new Asn1EncodableVector();
foreach (X509Certificate recipientCert in recipientCerts)
{
TbsCertificateStructure tbsCert;
try
{
tbsCert = TbsCertificateStructure.GetInstance(
Asn1Object.FromByteArray(recipientCert.GetTbsCertificate()));
}
catch (Exception)
{
throw new ArgumentException("can't extract TBS structure from certificate");
}
// TODO Should there be a SubjectKeyIdentifier-based alternative?
IssuerAndSerialNumber issuerSerial = new IssuerAndSerialNumber(
tbsCert.Issuer, tbsCert.SerialNumber.Value);
KeyAgreeRecipientIdentifier karid = new KeyAgreeRecipientIdentifier(issuerSerial);
ICipherParameters recipientPublicParams = recipientCert.GetPublicKey();
if (keyAgreementOID.Id.Equals(CmsEnvelopedGenerator.ECMqvSha1Kdf))
{
recipientPublicParams = new MqvPublicParameters(
(ECPublicKeyParameters)recipientPublicParams,
(ECPublicKeyParameters)recipientPublicParams);
}
// Use key agreement to choose a wrap key for this recipient
IBasicAgreement keyAgreement = AgreementUtilities.GetBasicAgreementWithKdf(
keyAgreementOID, keyEncryptionOID.Id);
keyAgreement.Init(new ParametersWithRandom(senderPrivateParams, random));
IBigInteger agreedValue = keyAgreement.CalculateAgreement(recipientPublicParams);
int keyEncryptionKeySize = GeneratorUtilities.GetDefaultKeySize(keyEncryptionOID) / 8;
byte[] keyEncryptionKeyBytes = X9IntegerConverter.IntegerToBytes(agreedValue, keyEncryptionKeySize);
KeyParameter keyEncryptionKey = ParameterUtilities.CreateKeyParameter(
keyEncryptionOID, keyEncryptionKeyBytes);
// Wrap the content encryption key with the agreement key
IWrapper keyWrapper = Helper.CreateWrapper(keyEncryptionOID.Id);
keyWrapper.Init(true, new ParametersWithRandom(keyEncryptionKey, random));
byte[] encryptedKeyBytes = keyWrapper.Wrap(keyBytes, 0, keyBytes.Length);
Asn1OctetString encryptedKey = new DerOctetString(encryptedKeyBytes);
recipientEncryptedKeys.Add(new RecipientEncryptedKey(karid, encryptedKey));
}
return new RecipientInfo(new KeyAgreeRecipientInfo(originator, ukm, keyEncAlg,
new DerSequence(recipientEncryptedKeys)));
}
/// <summary>
/// Add the "Subject Alternative Names" extension. Note that you have to repeat
/// the value from the "Subject Name" property.
/// </summary>
/// <param name="certificateGenerator"></param>
/// <param name="subjectAlternativeNames"></param>
private static void AddSubjectAlternativeNames(X509V3CertificateGenerator certificateGenerator,
IEnumerable<string> subjectAlternativeNames)
{
var subjectAlternativeNamesExtension =
new DerSequence(
subjectAlternativeNames.Select(name => new GeneralName(GeneralName.DnsName, name))
.ToArray<Asn1Encodable>());
certificateGenerator.AddExtension(
X509Extensions.SubjectAlternativeName.Id, false, subjectAlternativeNamesExtension);
}
public static Asn1EncodableVector GenerateSignerInfo(X509Certificate2 cert,
String digestAlgorithmName,
byte[] datos,
AdESPolicy policy,
bool signingCertificateV2,
byte[] messageDigest,
DateTime signDate,
bool padesMode,
String contentType,
String contentDescription)
{
// ALGORITMO DE HUELLA DIGITAL
AlgorithmIdentifier digestAlgorithmOID = SigUtils.MakeAlgId(AOAlgorithmID.GetOID(digestAlgorithmName));
// // ATRIBUTOS
// authenticatedAttributes
Asn1EncodableVector contexExpecific = InitContexExpecific(
digestAlgorithmName,
datos,
Org.BouncyCastle.Asn1.Pkcs.PkcsObjectIdentifiers.Data.Id,
messageDigest,
signDate,
padesMode
);
// Serial Number
// comentar lo de abajo para version del rfc 3852
if (signingCertificateV2)
{
// INICIO SINGING CERTIFICATE-V2
/** IssuerSerial ::= SEQUENCE { issuer GeneralNames, serialNumber
* CertificateSerialNumber */
TbsCertificateStructure tbs = TbsCertificateStructure.GetInstance(
Asn1Object.FromByteArray(
new Org.BouncyCastle.X509.X509Certificate(
X509CertificateStructure.GetInstance(
Asn1Object.FromByteArray(
cert.GetRawCertData()))).GetTbsCertificate()));
GeneralNames gns = new GeneralNames(new GeneralName(tbs.Issuer));
IssuerSerial isuerSerial = new IssuerSerial(gns, tbs.SerialNumber);
/** ESSCertIDv2 ::= SEQUENCE { hashAlgorithm AlgorithmIdentifier
* DEFAULT {algorithm id-sha256}, certHash Hash, issuerSerial
* IssuerSerial OPTIONAL }
* Hash ::= OCTET STRING */
byte[] certHash = Digester.Digest(cert.GetRawCertData(), digestAlgorithmName);
EssCertIDv2[] essCertIDv2 = { new EssCertIDv2(digestAlgorithmOID, certHash, isuerSerial) };
/** PolicyInformation ::= SEQUENCE { policyIdentifier CertPolicyId,
* policyQualifiers SEQUENCE SIZE (1..MAX) OF PolicyQualifierInfo
* OPTIONAL }
* CertPolicyId ::= OBJECT IDENTIFIER
* PolicyQualifierInfo ::= SEQUENCE { policyQualifierId
* PolicyQualifierId, qualifier ANY DEFINED BY policyQualifierId } */
SigningCertificateV2 scv2;
if (policy.GetPolicyIdentifier() != null)
{
/** SigningCertificateV2 ::= SEQUENCE { certs SEQUENCE OF
* ESSCertIDv2, policies SEQUENCE OF PolicyInformation OPTIONAL
* } */
scv2 = new SigningCertificateV2(essCertIDv2, GetPolicyInformation(policy)); // con politica
}
else
{
scv2 = new SigningCertificateV2(essCertIDv2); // Sin politica
}
// Secuencia con singningCertificate
contexExpecific.Add(new Org.BouncyCastle.Asn1.Cms.Attribute(Org.BouncyCastle.Asn1.Pkcs.PkcsObjectIdentifiers.IdAASigningCertificateV2, new DerSet(scv2)));
// FIN SINGING CERTIFICATE-V2
}
else
{
// INICIO SINGNING CERTIFICATE
/** IssuerSerial ::= SEQUENCE { issuer GeneralNames, serialNumber
* CertificateSerialNumber } */
TbsCertificateStructure tbs = TbsCertificateStructure.GetInstance(
Asn1Object.FromByteArray(
new Org.BouncyCastle.X509.X509Certificate(
X509CertificateStructure.GetInstance(
Asn1Object.FromByteArray(
cert.GetRawCertData()))).GetTbsCertificate()));
GeneralName gn = new GeneralName(tbs.Issuer);
GeneralNames gns = new GeneralNames(gn);
IssuerSerial isuerSerial = new IssuerSerial(gns, tbs.SerialNumber);
/** ESSCertID ::= SEQUENCE { certHash Hash, issuerSerial IssuerSerial
* OPTIONAL }
* Hash ::= OCTET STRING -- SHA1 hash of entire certificate */
byte[] certHash = Digester.Digest(cert.GetRawCertData(), digestAlgorithmName);
EssCertID essCertID = new EssCertID(certHash, isuerSerial);
/** PolicyInformation ::= SEQUENCE { policyIdentifier CertPolicyId,
* policyQualifiers SEQUENCE SIZE (1..MAX) OF PolicyQualifierInfo
* OPTIONAL }
* CertPolicyId ::= OBJECT IDENTIFIER
* PolicyQualifierInfo ::= SEQUENCE { policyQualifierId
* PolicyQualifierId, qualifier ANY DEFINED BY policyQualifierId } */
SigningCertificate scv;
if (policy.GetPolicyIdentifier() != null)
{
/** SigningCertificateV2 ::= SEQUENCE { certs SEQUENCE OF
* ESSCertIDv2, policies SEQUENCE OF PolicyInformation OPTIONAL
* } */
/*
* HAY QUE HACER UN SEQUENCE, YA QUE EL CONSTRUCTOR DE BOUNCY
* CASTLE NO TIENE DICHO CONSTRUCTOR.
*/
Asn1EncodableVector v = new Asn1EncodableVector();
v.Add(new DerSequence(essCertID));
v.Add(new DerSequence(GetPolicyInformation(policy)));
scv = SigningCertificate.GetInstance(new DerSequence(v)); // con politica
}
else
{
scv = new SigningCertificate(essCertID); // Sin politica
}
/** id-aa-signingCertificate OBJECT IDENTIFIER ::= { iso(1)
* member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) smime(16)
* id-aa(2) 12 } */
// Secuencia con singningCertificate
contexExpecific.Add(new Org.BouncyCastle.Asn1.Cms.Attribute(Org.BouncyCastle.Asn1.Pkcs.PkcsObjectIdentifiers.IdAASigningCertificate, new DerSet(scv)));
}
// INICIO SIGPOLICYID ATTRIBUTE
if (policy.GetPolicyIdentifier() != null)
{
/**
* SigPolicyId ::= OBJECT IDENTIFIER Politica de firma.
*/
DerObjectIdentifier doiSigPolicyId = new DerObjectIdentifier(policy.GetPolicyIdentifier().ToLower().Replace("urn:oid:", ""));
/**
* OtherHashAlgAndValue ::= SEQUENCE {
* hashAlgorithm AlgorithmIdentifier,
* hashValue OCTET STRING }
*
*/
// Algoritmo para el hash
AlgorithmIdentifier hashid;
// si tenemos algoritmo de calculo de hash, lo ponemos
if (policy.GetPolicyIdentifierHashAlgorithm() != null)
{
hashid = SigUtils.MakeAlgId(
AOAlgorithmID.GetOID(
AOSignConstants.GetDigestAlgorithmName(
policy.GetPolicyIdentifierHashAlgorithm())));
}
// si no tenemos, ponemos el algoritmo de firma.
else
{
hashid = digestAlgorithmOID;
}
// hash del documento, descifrado en b64
byte[] hashed;
if (policy.GetPolicyIdentifierHash() != null)
{
hashed = System.Convert.FromBase64String(policy.GetPolicyIdentifierHash());
}
else
{
hashed = new byte[] { 0 };
}
DigestInfo otherHashAlgAndValue = new DigestInfo(hashid, hashed);
/**
* SigPolicyQualifierInfo ::= SEQUENCE {
* SigPolicyQualifierId SigPolicyQualifierId,
* SigQualifier ANY DEFINED BY policyQualifierId }
*/
AOSigPolicyQualifierInfo spqInfo = null;
if (policy.GetPolicyQualifier() != null)
{
spqInfo = new AOSigPolicyQualifierInfo(policy.GetPolicyQualifier().ToString());
}
/**
* SignaturePolicyId ::= SEQUENCE {
* sigPolicyId SigPolicyId,
* sigPolicyHash SigPolicyHash,
* sigPolicyQualifiers SEQUENCE SIZE (1..MAX) OF
* AOSigPolicyQualifierInfo OPTIONAL}
*
*/
Asn1EncodableVector v = new Asn1EncodableVector();
// sigPolicyId
v.Add(doiSigPolicyId);
// sigPolicyHash
v.Add(otherHashAlgAndValue.ToAsn1Object()); // como sequence
// sigPolicyQualifiers
if (spqInfo != null)
{
v.Add(spqInfo.toASN1Primitive());
}
DerSequence ds = new DerSequence(v);
// Secuencia con singningCertificate
contexExpecific.Add(new Org.BouncyCastle.Asn1.Cms.Attribute(Org.BouncyCastle.Asn1.Pkcs.PkcsObjectIdentifiers.IdAAEtsSigPolicyID, new DerSet(ds.ToAsn1Object())));
// FIN SIGPOLICYID ATTRIBUTE
}
/**
* Secuencia con el tipo de contenido firmado. No se agrega en firmas PAdES.
*
* ContentHints ::= SEQUENCE {
* contentDescription UTF8String (SIZE (1..MAX)) OPTIONAL,
* contentType ContentType }
*/
if (contentType != null && !padesMode)
{
ContentHints contentHints;
if (contentDescription != null)
{
contentHints = new ContentHints(new DerObjectIdentifier(contentType),
new DerUtf8String(contentDescription));
}
else
{
contentHints = new ContentHints(new DerObjectIdentifier(contentType));
}
contexExpecific.Add(new Org.BouncyCastle.Asn1.Cms.Attribute(
Org.BouncyCastle.Asn1.Pkcs.PkcsObjectIdentifiers.IdAAContentHint,
new DerSet(contentHints.ToAsn1Object())));
}
return contexExpecific;
}
public void TestAnswerSSH2_AGENTC_SIGN_REQUEST()
{
const string signatureData = "this is the data that gets signed";
byte[] signatureDataBytes = Encoding.UTF8.GetBytes(signatureData);
BlobBuilder builder = new BlobBuilder();
Agent agent = new TestAgent(allKeys);
Agent.BlobHeader header;
byte[] signatureBlob;
BlobParser signatureParser;
string algorithm;
byte[] signature;
ISigner signer;
bool signatureOk;
BigInteger r, s;
DerSequence seq;
/* test signatures */
foreach (ISshKey key in allKeys.Where(key => key.Version == SshVersion.SSH2)) {
builder.Clear();
builder.AddBlob(key.GetPublicKeyBlob());
builder.AddStringBlob(signatureData);
builder.InsertHeader(Agent.Message.SSH2_AGENTC_SIGN_REQUEST);
PrepareMessage(builder);
agent.AnswerMessage(stream);
RewindStream();
/* check that proper response type was received */
header = parser.ReadHeader();
Assert.That(header.Message,
Is.EqualTo(Agent.Message.SSH2_AGENT_SIGN_RESPONSE));
signatureBlob = parser.ReadBlob();
signatureParser = new BlobParser(signatureBlob);
algorithm = signatureParser.ReadString();
Assert.That(algorithm, Is.EqualTo(key.Algorithm.GetIdentifierString()));
signature = signatureParser.ReadBlob();
if (key.Algorithm == PublicKeyAlgorithm.SSH_RSA) {
Assert.That(signature.Length == key.Size / 8);
} else if (key.Algorithm == PublicKeyAlgorithm.SSH_DSS) {
Assert.That(signature.Length, Is.EqualTo(40));
r = new BigInteger(1, signature, 0, 20);
s = new BigInteger(1, signature, 20, 20);
seq = new DerSequence(new DerInteger(r), new DerInteger(s));
signature = seq.GetDerEncoded();
} else if (key.Algorithm == PublicKeyAlgorithm.ECDSA_SHA2_NISTP256 ||
key.Algorithm == PublicKeyAlgorithm.ECDSA_SHA2_NISTP384 ||
key.Algorithm == PublicKeyAlgorithm.ECDSA_SHA2_NISTP521) {
Assert.That(signature.Length, Is.AtLeast(key.Size / 4 + 8));
Assert.That(signature.Length, Is.AtMost(key.Size / 4 + 10));
BlobParser sigParser = new BlobParser(signature);
r = new BigInteger(sigParser.ReadBlob());
s = new BigInteger(sigParser.ReadBlob());
seq = new DerSequence(new DerInteger(r), new DerInteger(s));
signature = seq.GetDerEncoded();
} else if (key.Algorithm == PublicKeyAlgorithm.ED25519) {
Assert.That(signature.Length, Is.EqualTo(64));
}
signer = key.GetSigner();
signer.Init(false, key.GetPublicKeyParameters());
signer.BlockUpdate(signatureDataBytes, 0, signatureDataBytes.Length);
signatureOk = signer.VerifySignature(signature);
Assert.That(signatureOk, Is.True, "invalid signature");
Assert.That(header.BlobLength, Is.EqualTo(stream.Position - 4));
}
/* test DSA key old signature format */
builder.Clear();
builder.AddBlob(dsaKey.GetPublicKeyBlob());
builder.AddStringBlob(signatureData);
builder.AddInt((uint)Agent.SignRequestFlags.SSH_AGENT_OLD_SIGNATURE);
builder.InsertHeader(Agent.Message.SSH2_AGENTC_SIGN_REQUEST);
PrepareMessage(builder);
agent.AnswerMessage(stream);
RewindStream();
header = parser.ReadHeader();
Assert.That(header.Message,
Is.EqualTo(Agent.Message.SSH2_AGENT_SIGN_RESPONSE));
signatureBlob = parser.ReadBlob();
signatureParser = new BlobParser(signatureBlob);
signature = signatureParser.ReadBlob();
Assert.That(signature.Length == 40);
r = new BigInteger(1, signature, 0, 20);
s = new BigInteger(1, signature, 20, 20);
seq = new DerSequence(new DerInteger(r), new DerInteger(s));
signature = seq.GetDerEncoded();
signer = dsaKey.GetSigner();
signer.Init(false, dsaKey.GetPublicKeyParameters());
signer.BlockUpdate(signatureDataBytes, 0, signatureDataBytes.Length);
signatureOk = signer.VerifySignature(signature);
Assert.That(signatureOk, Is.True, "invalid signature");
Assert.That(header.BlobLength, Is.EqualTo(stream.Position - 4));
/* test key not found */
agent = new TestAgent();
builder.Clear();
builder.AddBlob(dsaKey.GetPublicKeyBlob());
builder.AddStringBlob(signatureData);
builder.InsertHeader(Agent.Message.SSH2_AGENTC_SIGN_REQUEST);
PrepareMessage(builder);
agent.AnswerMessage(stream);
RewindStream();
Agent.BlobHeader header2 = parser.ReadHeader();
Assert.That(header2.BlobLength, Is.EqualTo(1));
Assert.That(header2.Message, Is.EqualTo(Agent.Message.SSH_AGENT_FAILURE));
/* test confirm constraint */
agent = new TestAgent();
Agent.KeyConstraint testConstraint = new Agent.KeyConstraint();
testConstraint.Type = Agent.KeyConstraintType.SSH_AGENT_CONSTRAIN_CONFIRM;
SshKey testKey = dsaKey.Clone();
bool confirmCallbackReturnValue = false;
agent.ConfirmUserPermissionCallback = delegate(ISshKey k, Process p)
{
return confirmCallbackReturnValue;
};
testKey.AddConstraint(testConstraint);
agent.AddKey(testKey);
builder.Clear();
builder.AddBlob(dsaKey.GetPublicKeyBlob());
builder.AddStringBlob(signatureData);
builder.InsertHeader(Agent.Message.SSH2_AGENTC_SIGN_REQUEST);
PrepareMessage(builder);
agent.AnswerMessage(stream);
RewindStream();
header2 = parser.ReadHeader();
Assert.That(header2.BlobLength, Is.EqualTo(1));
Assert.That(header2.Message, Is.EqualTo(Agent.Message.SSH_AGENT_FAILURE));
confirmCallbackReturnValue = true;
PrepareMessage(builder);
agent.AnswerMessage(stream);
RewindStream();
header2 = parser.ReadHeader();
Assert.That(header2.BlobLength, Is.Not.EqualTo(1));
Assert.That(header2.Message, Is.EqualTo(Agent.Message.SSH2_AGENT_SIGN_RESPONSE));
}
public void Save(
Stream stream,
char[] password,
SecureRandom random)
{
if (stream == null)
throw new ArgumentNullException("stream");
if (password == null)
throw new ArgumentNullException("password");
if (random == null)
throw new ArgumentNullException("random");
ContentInfo[] c = new ContentInfo[2];
//
// handle the key
//
Asn1EncodableVector keyS = new Asn1EncodableVector();
foreach (string name in keys.Keys)
{
byte[] kSalt = new byte[saltSize];
random.NextBytes(kSalt);
AsymmetricKeyEntry privKey = (AsymmetricKeyEntry) keys[name];
EncryptedPrivateKeyInfo kInfo =
EncryptedPrivateKeyInfoFactory.CreateEncryptedPrivateKeyInfo(
keyAlgorithm, password, kSalt, minIterations, privKey.Key);
Asn1EncodableVector kName = new Asn1EncodableVector();
foreach (string oid in privKey.BagAttributeKeys)
{
kName.Add(
new DerSequence(
new DerObjectIdentifier(oid),
new DerSet(privKey[oid])));
}
//
// make sure we have a local key-id
//
if (privKey[PkcsObjectIdentifiers.Pkcs9AtLocalKeyID] == null)
{
X509CertificateEntry ct = GetCertificate(name);
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(
ct.Certificate.GetPublicKey());
kName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtLocalKeyID,
new DerSet(new SubjectKeyIdentifier(info))));
}
//
// make sure we are using the local alias on store
//
DerBmpString nm = (DerBmpString) privKey[PkcsObjectIdentifiers.Pkcs9AtFriendlyName];
if (nm == null || !nm.GetString().Equals(name))
{
kName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtFriendlyName,
new DerSet(new DerBmpString(name))));
}
SafeBag kBag = new SafeBag(PkcsObjectIdentifiers.Pkcs8ShroudedKeyBag, kInfo.ToAsn1Object(), new DerSet(kName));
keyS.Add(kBag);
}
byte[] derEncodedBytes = new DerSequence(keyS).GetDerEncoded();
BerOctetString keyString = new BerOctetString(derEncodedBytes);
//
// certificate processing
//
byte[] cSalt = new byte[saltSize];
random.NextBytes(cSalt);
Asn1EncodableVector certSeq = new Asn1EncodableVector();
Pkcs12PbeParams cParams = new Pkcs12PbeParams(cSalt, minIterations);
AlgorithmIdentifier cAlgId = new AlgorithmIdentifier(certAlgorithm, cParams.ToAsn1Object());
Hashtable doneCerts = new Hashtable();
foreach (string name in keys.Keys)
{
X509CertificateEntry certEntry = GetCertificate(name);
CertBag cBag = new CertBag(
PkcsObjectIdentifiers.X509CertType,
new DerOctetString(certEntry.Certificate.GetEncoded()));
Asn1EncodableVector fName = new Asn1EncodableVector();
foreach (string oid in certEntry.BagAttributeKeys)
{
fName.Add(
new DerSequence(
new DerObjectIdentifier(oid),
new DerSet(certEntry[oid])));
}
//
// make sure we are using the local alias on store
//
DerBmpString nm = (DerBmpString)certEntry[PkcsObjectIdentifiers.Pkcs9AtFriendlyName];
if (nm == null || !nm.GetString().Equals(name))
{
fName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtFriendlyName,
new DerSet(new DerBmpString(name))));
}
//
// make sure we have a local key-id
//
if (certEntry[PkcsObjectIdentifiers.Pkcs9AtLocalKeyID] == null)
{
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(
certEntry.Certificate.GetPublicKey());
fName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtLocalKeyID,
new DerSet(new SubjectKeyIdentifier(info))));
}
SafeBag sBag = new SafeBag(
PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName));
certSeq.Add(sBag);
doneCerts.Add(certEntry.Certificate, certEntry.Certificate);
}
foreach (string certId in certs.Keys)
{
X509CertificateEntry cert = (X509CertificateEntry)certs[certId];
if (keys[certId] != null)
{
continue;
}
CertBag cBag = new CertBag(
PkcsObjectIdentifiers.X509CertType,
new DerOctetString(cert.Certificate.GetEncoded()));
Asn1EncodableVector fName = new Asn1EncodableVector();
foreach (string oid in cert.BagAttributeKeys)
{
fName.Add(
new DerSequence(
new DerObjectIdentifier(oid),
new DerSet(cert[oid])));
}
//
// make sure we are using the local alias on store
//
DerBmpString nm = (DerBmpString) cert[PkcsObjectIdentifiers.Pkcs9AtFriendlyName];
if (nm == null || !nm.GetString().Equals(certId))
{
fName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtFriendlyName,
new DerSet(new DerBmpString(certId))));
}
SafeBag sBag = new SafeBag(PkcsObjectIdentifiers.CertBag,
cBag.ToAsn1Object(), new DerSet(fName));
certSeq.Add(sBag);
doneCerts.Add(cert, cert);
}
foreach (CertId certId in chainCerts.Keys)
{
X509CertificateEntry cert = (X509CertificateEntry)chainCerts[certId];
if (doneCerts[cert] != null)
{
continue;
}
CertBag cBag = new CertBag(
PkcsObjectIdentifiers.X509CertType,
new DerOctetString(cert.Certificate.GetEncoded()));
Asn1EncodableVector fName = new Asn1EncodableVector();
foreach (string oid in cert.BagAttributeKeys)
{
fName.Add(new DerSequence(new DerObjectIdentifier(oid), new DerSet(cert[oid])));
}
SafeBag sBag = new SafeBag(PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName));
certSeq.Add(sBag);
}
derEncodedBytes = new DerSequence(certSeq).GetDerEncoded();
byte[] certBytes = EncryptData(new AlgorithmIdentifier(certAlgorithm, cParams), derEncodedBytes, password);
EncryptedData cInfo = new EncryptedData(PkcsObjectIdentifiers.Data, cAlgId, new BerOctetString(certBytes));
c[0] = new ContentInfo(PkcsObjectIdentifiers.Data, keyString);
c[1] = new ContentInfo(PkcsObjectIdentifiers.EncryptedData, cInfo.ToAsn1Object());
AuthenticatedSafe auth = new AuthenticatedSafe(c);
byte[] pkg = auth.GetEncoded();
ContentInfo mainInfo = new ContentInfo(PkcsObjectIdentifiers.Data, new BerOctetString(pkg));
//
// create the mac
//
byte[] mSalt = new byte[20];
int itCount = minIterations;
random.NextBytes(mSalt);
byte[] data = ((Asn1OctetString)mainInfo.Content).GetOctets();
Asn1Encodable parameters = PbeUtilities.GenerateAlgorithmParameters(OiwObjectIdentifiers.IdSha1, mSalt, itCount);
ICipherParameters keyParameters = PbeUtilities.GenerateCipherParameters(
OiwObjectIdentifiers.IdSha1, password, parameters);
IMac mac = (IMac)PbeUtilities.CreateEngine(OiwObjectIdentifiers.IdSha1);
mac.Init(keyParameters);
mac.BlockUpdate(data, 0, data.Length);
byte[] res = new byte[mac.GetMacSize()];
mac.DoFinal(res, 0);
AlgorithmIdentifier algId = new AlgorithmIdentifier(OiwObjectIdentifiers.IdSha1, DerNull.Instance);
DigestInfo dInfo = new DigestInfo(algId, res);
MacData mData = new MacData(dInfo, mSalt, itCount);
//
// output the Pfx
//
Pfx pfx = new Pfx(mainInfo, mData);
BerOutputStream berOut = new BerOutputStream(stream);
berOut.WriteObject(pfx);
}
public Asn1Object ToAsn1Object()
{
if (_indefiniteLength)
{
Asn1EncodableVector v = rLoadVector(_contentStream);
return(v.Count == 1
? new BerTaggedObject(true, _tagNumber, v[0])
: new BerTaggedObject(false, _tagNumber, BerSequence.FromVector(v)));
}
if (IsConstructed)
{
Asn1EncodableVector v = rLoadVector(_contentStream);
return(v.Count == 1
? new DerTaggedObject(true, _tagNumber, v[0])
: new DerTaggedObject(false, _tagNumber, DerSequence.FromVector(v)));
}
try
{
DefiniteLengthInputStream defIn = (DefiniteLengthInputStream)_contentStream;
return(new DerTaggedObject(false, _tagNumber, new DerOctetString(defIn.ToArray())));
}
catch (IOException e)
{
throw new InvalidOperationException(e.Message, e);
}
}
public byte[] GetSignature()
{
MPInteger[] sigValues = sigPck.GetSignature();
byte[] signature;
if (sigValues.Length == 1) // an RSA signature
{
byte[] sBytes = sigValues[0].Value.ToByteArray();
if (sBytes[0] == 0)
{
signature = new byte[sBytes.Length - 1];
Array.Copy(sBytes, 1, signature, 0, signature.Length);
}
else
{
signature = sBytes;
}
}
else
{
try
{
signature = new DerSequence(
new DerInteger(sigValues[0].Value),
new DerInteger(sigValues[1].Value)).GetEncoded();
}
catch (IOException e)
{
throw new PgpException("exception encoding DSA sig.", e);
}
}
return signature;
}
/**
* Gets the bytes for the PKCS7SignedData object. Optionally the authenticatedAttributes
* in the signerInfo can also be set. If either of the parameters is <CODE>null</CODE>, none will be used.
* @param secondDigest the digest in the authenticatedAttributes
* @param signingTime the signing time in the authenticatedAttributes
* @return the bytes for the PKCS7SignedData object
*/
public byte[] GetEncodedPKCS7(byte[] secondDigest, DateTime signingTime)
{
if (externalDigest != null) {
digest = externalDigest;
if (RSAdata != null)
RSAdata = externalRSAdata;
}
else if (externalRSAdata != null && RSAdata != null) {
RSAdata = externalRSAdata;
sig.BlockUpdate(RSAdata, 0, RSAdata.Length);
digest = sig.GenerateSignature();
}
else {
if (RSAdata != null) {
RSAdata = new byte[messageDigest.GetDigestSize()];
messageDigest.DoFinal(RSAdata, 0);
sig.BlockUpdate(RSAdata, 0, RSAdata.Length);
}
digest = sig.GenerateSignature();
}
// Create the set of Hash algorithms
Asn1EncodableVector digestAlgorithms = new Asn1EncodableVector();
foreach (string dal in digestalgos.Keys) {
Asn1EncodableVector algos = new Asn1EncodableVector();
algos.Add(new DerObjectIdentifier(dal));
algos.Add(DerNull.Instance);
digestAlgorithms.Add(new DerSequence(algos));
}
// Create the contentInfo.
Asn1EncodableVector v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(ID_PKCS7_DATA));
if (RSAdata != null)
v.Add(new DerTaggedObject(0, new DerOctetString(RSAdata)));
DerSequence contentinfo = new DerSequence(v);
// Get all the certificates
//
v = new Asn1EncodableVector();
foreach (X509Certificate xcert in certs) {
Asn1InputStream tempstream = new Asn1InputStream(new MemoryStream(xcert.GetEncoded()));
v.Add(tempstream.ReadObject());
}
DerSet dercertificates = new DerSet(v);
// Create signerinfo structure.
//
Asn1EncodableVector signerinfo = new Asn1EncodableVector();
// Add the signerInfo version
//
signerinfo.Add(new DerInteger(signerversion));
v = new Asn1EncodableVector();
v.Add(GetIssuer(signCert.GetTbsCertificate()));
v.Add(new DerInteger(signCert.SerialNumber));
signerinfo.Add(new DerSequence(v));
// Add the digestAlgorithm
v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(digestAlgorithm));
v.Add(DerNull.Instance);
signerinfo.Add(new DerSequence(v));
// add the authenticated attribute if present
if (secondDigest != null /*&& signingTime != null*/) {
Asn1EncodableVector attribute = new Asn1EncodableVector();
v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(ID_CONTENT_TYPE));
v.Add(new DerSet(new DerObjectIdentifier(ID_PKCS7_DATA)));
attribute.Add(new DerSequence(v));
v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(ID_SIGNING_TIME));
v.Add(new DerSet(new DerUtcTime(signingTime)));
attribute.Add(new DerSequence(v));
v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(ID_MESSAGE_DIGEST));
v.Add(new DerSet(new DerOctetString(secondDigest)));
attribute.Add(new DerSequence(v));
signerinfo.Add(new DerTaggedObject(false, 0, new DerSet(attribute)));
}
// Add the digestEncryptionAlgorithm
v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(digestEncryptionAlgorithm));
v.Add(DerNull.Instance);
signerinfo.Add(new DerSequence(v));
// Add the digest
signerinfo.Add(new DerOctetString(digest));
// Finally build the body out of all the components above
Asn1EncodableVector body = new Asn1EncodableVector();
body.Add(new DerInteger(version));
body.Add(new DerSet(digestAlgorithms));
body.Add(contentinfo);
body.Add(new DerTaggedObject(false, 0, dercertificates));
// if (crls.Count > 0) {
// v = new Asn1EncodableVector();
// for (Iterator i = crls.Iterator();i.HasNext();) {
// Asn1InputStream t = new Asn1InputStream(new ByteArrayInputStream((((X509CRL)i.Next()).GetEncoded())));
// v.Add(t.ReadObject());
// }
// DERSet dercrls = new DERSet(v);
// body.Add(new DERTaggedObject(false, 1, dercrls));
// }
// Only allow one signerInfo
body.Add(new DerSet(new DerSequence(signerinfo)));
// Now we have the body, wrap it in it's PKCS7Signed shell
// and return it
//
Asn1EncodableVector whole = new Asn1EncodableVector();
whole.Add(new DerObjectIdentifier(ID_PKCS7_SIGNED_DATA));
whole.Add(new DerTaggedObject(0, new DerSequence(body)));
MemoryStream bOut = new MemoryStream();
Asn1OutputStream dout = new Asn1OutputStream(bOut);
dout.WriteObject(new DerSequence(whole));
dout.Close();
return bOut.ToArray();
}
public void TestSignRequest()
{
var agentClient = new TestAgentClient();
var data = Encoding.UTF8.GetBytes("Data to be signed");
foreach (var key in allKeys) {
agentClient.Agent.AddKey(key);
var signature = agentClient.SignRequest(key, data);
switch (key.Version) {
case SshVersion.SSH1:
using (MD5 md5 = MD5.Create()) {
var md5Buffer = new byte[48];
data.CopyTo(md5Buffer, 0);
agentClient.SessionId.CopyTo(md5Buffer, 32);
var expctedSignature = md5.ComputeHash(md5Buffer);
Assert.That(signature, Is.EqualTo(expctedSignature));
}
break;
case SshVersion.SSH2:
BlobParser signatureParser = new BlobParser(signature);
var algorithm = signatureParser.ReadString();
Assert.That(algorithm, Is.EqualTo(key.Algorithm.GetIdentifierString()));
signature = signatureParser.ReadBlob();
if (key.Algorithm == PublicKeyAlgorithm.SSH_RSA) {
Assert.That(signature.Length == key.Size / 8);
} else if (key.Algorithm == PublicKeyAlgorithm.SSH_DSS) {
Assert.That(signature.Length, Is.EqualTo(40));
var r = new BigInteger(1, signature, 0, 20);
var s = new BigInteger(1, signature, 20, 20);
var seq = new DerSequence(new DerInteger(r), new DerInteger(s));
signature = seq.GetDerEncoded();
} else if (key.Algorithm == PublicKeyAlgorithm.ECDSA_SHA2_NISTP256 ||
key.Algorithm == PublicKeyAlgorithm.ECDSA_SHA2_NISTP384 ||
key.Algorithm == PublicKeyAlgorithm.ECDSA_SHA2_NISTP521) {
Assert.That(signature.Length, Is.AtLeast(key.Size / 4 + 8));
Assert.That(signature.Length, Is.AtMost(key.Size / 4 + 10));
BlobParser parser = new BlobParser(signature);
var r = new BigInteger(parser.ReadBlob());
var s = new BigInteger(parser.ReadBlob());
var seq = new DerSequence(new DerInteger(r), new DerInteger(s));
signature = seq.GetDerEncoded();
}
var signer = key.GetSigner();
signer.Init(false, key.GetPublicKeyParameters());
signer.BlockUpdate(data, 0, data.Length);
var valid = signer.VerifySignature(signature);
Assert.That(valid, Is.True);
break;
default:
Assert.Fail("Unexpected Ssh Version");
break;
}
}
}
/// <summary>
/// Write myself to the given stream
/// </summary>
public void WriteTo(Stream stream, out string md5FingerPrint, out string sha1FingerPrint)
{
X509Certificate[] cert;
AsymmetricKeyEntry privateKey;
LoadPfx(out cert, out privateKey);
var certsVector = new Asn1EncodableVector();
md5FingerPrint = null;
sha1FingerPrint = null;
foreach (var c in cert)
{
var certStream = new MemoryStream(c.GetEncoded());
var certStruct = X509CertificateStructure.GetInstance(new Asn1InputStream(certStream).ReadObject());
certsVector.Add(certStruct);
if (md5FingerPrint == null)
{
var certData = certStream.ToArray();
md5FingerPrint = CreateFingerprint(new MD5Digest(), certData);
}
if (sha1FingerPrint == null)
{
var certData = certStream.ToArray();
sha1FingerPrint = CreateFingerprint(new Sha1Digest(), certData);
}
}
var encryptedSignature = GetSignature(signature, privateKey.Key);
var signerInfo = new SignerInfo(
new DerInteger(1),
new IssuerAndSerialNumber(cert[0].IssuerDN, cert[0].SerialNumber),
new AlgorithmIdentifier(Oids.SHA1, DerNull.Instance),
null,
new AlgorithmIdentifier(Oids.RSA, DerNull.Instance),
new DerOctetString(encryptedSignature),
null);
var pkcs7 = new SignedData(
new DerInteger(1),
new DerSet(new AlgorithmIdentifier(Oids.SHA1, DerNull.Instance)),
new ContentInfo(new DerObjectIdentifier(Oids.data), null),
new DerSet(certsVector),
null,
new DerSet(signerInfo));
//var signedData = new ContentInfo(new DERObjectIdentifier(Oids.signedData), pkcs7);
var v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(Oids.signedData));
v.Add(new DerTaggedObject(0, pkcs7));
var signedData = new DerSequence(v);
// Save
var data = signedData.GetEncoded();
stream.Write(data, 0, data.Length);
}
public void Save(
Stream stream,
char[] password,
SecureRandom random)
{
if (stream == null)
throw new ArgumentNullException("stream");
if (random == null)
throw new ArgumentNullException("random");
//
// handle the keys
//
Asn1EncodableVector keyBags = new Asn1EncodableVector();
foreach (string name in keys.Keys)
{
byte[] kSalt = new byte[SaltSize];
random.NextBytes(kSalt);
AsymmetricKeyEntry privKey = (AsymmetricKeyEntry)keys[name];
DerObjectIdentifier bagOid;
Asn1Encodable bagData;
if (password == null)
{
bagOid = PkcsObjectIdentifiers.KeyBag;
bagData = PrivateKeyInfoFactory.CreatePrivateKeyInfo(privKey.Key);
}
else
{
bagOid = PkcsObjectIdentifiers.Pkcs8ShroudedKeyBag;
bagData = EncryptedPrivateKeyInfoFactory.CreateEncryptedPrivateKeyInfo(
keyAlgorithm, password, kSalt, MinIterations, privKey.Key);
}
Asn1EncodableVector kName = new Asn1EncodableVector();
foreach (string oid in privKey.BagAttributeKeys)
{
Asn1Encodable entry = privKey[oid];
// NB: Ignore any existing FriendlyName
if (oid.Equals(PkcsObjectIdentifiers.Pkcs9AtFriendlyName.Id))
continue;
kName.Add(
new DerSequence(
new DerObjectIdentifier(oid),
new DerSet(entry)));
}
//
// make sure we are using the local alias on store
//
// NB: We always set the FriendlyName based on 'name'
//if (privKey[PkcsObjectIdentifiers.Pkcs9AtFriendlyName] == null)
{
kName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtFriendlyName,
new DerSet(new DerBmpString(name))));
}
//
// make sure we have a local key-id
//
if (privKey[PkcsObjectIdentifiers.Pkcs9AtLocalKeyID] == null)
{
X509CertificateEntry ct = GetCertificate(name);
AsymmetricKeyParameter pubKey = ct.Certificate.GetPublicKey();
SubjectKeyIdentifier subjectKeyID = CreateSubjectKeyID(pubKey);
kName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtLocalKeyID,
new DerSet(subjectKeyID)));
}
keyBags.Add(new SafeBag(bagOid, bagData.ToAsn1Object(), new DerSet(kName)));
}
byte[] keyBagsEncoding = new DerSequence(keyBags).GetDerEncoded();
ContentInfo keysInfo = new ContentInfo(PkcsObjectIdentifiers.Data, new BerOctetString(keyBagsEncoding));
//
// certificate processing
//
byte[] cSalt = new byte[SaltSize];
random.NextBytes(cSalt);
Asn1EncodableVector certBags = new Asn1EncodableVector();
Pkcs12PbeParams cParams = new Pkcs12PbeParams(cSalt, MinIterations);
AlgorithmIdentifier cAlgId = new AlgorithmIdentifier(certAlgorithm, cParams.ToAsn1Object());
ISet doneCerts = new HashSet();
foreach (string name in keys.Keys)
{
X509CertificateEntry certEntry = GetCertificate(name);
CertBag cBag = new CertBag(
PkcsObjectIdentifiers.X509Certificate,
new DerOctetString(certEntry.Certificate.GetEncoded()));
Asn1EncodableVector fName = new Asn1EncodableVector();
foreach (string oid in certEntry.BagAttributeKeys)
{
Asn1Encodable entry = certEntry[oid];
// NB: Ignore any existing FriendlyName
if (oid.Equals(PkcsObjectIdentifiers.Pkcs9AtFriendlyName.Id))
continue;
fName.Add(
new DerSequence(
new DerObjectIdentifier(oid),
new DerSet(entry)));
}
//
// make sure we are using the local alias on store
//
// NB: We always set the FriendlyName based on 'name'
//if (certEntry[PkcsObjectIdentifiers.Pkcs9AtFriendlyName] == null)
{
fName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtFriendlyName,
new DerSet(new DerBmpString(name))));
}
//
// make sure we have a local key-id
//
if (certEntry[PkcsObjectIdentifiers.Pkcs9AtLocalKeyID] == null)
{
AsymmetricKeyParameter pubKey = certEntry.Certificate.GetPublicKey();
SubjectKeyIdentifier subjectKeyID = CreateSubjectKeyID(pubKey);
fName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtLocalKeyID,
new DerSet(subjectKeyID)));
}
certBags.Add(new SafeBag(PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName)));
doneCerts.Add(certEntry.Certificate);
}
foreach (string certId in certs.Keys)
{
X509CertificateEntry cert = (X509CertificateEntry)certs[certId];
if (keys[certId] != null)
continue;
CertBag cBag = new CertBag(
PkcsObjectIdentifiers.X509Certificate,
new DerOctetString(cert.Certificate.GetEncoded()));
Asn1EncodableVector fName = new Asn1EncodableVector();
foreach (string oid in cert.BagAttributeKeys)
{
// a certificate not immediately linked to a key doesn't require
// a localKeyID and will confuse some PKCS12 implementations.
//
// If we find one, we'll prune it out.
if (oid.Equals(PkcsObjectIdentifiers.Pkcs9AtLocalKeyID.Id))
continue;
Asn1Encodable entry = cert[oid];
// NB: Ignore any existing FriendlyName
if (oid.Equals(PkcsObjectIdentifiers.Pkcs9AtFriendlyName.Id))
continue;
fName.Add(
new DerSequence(
new DerObjectIdentifier(oid),
new DerSet(entry)));
}
//
// make sure we are using the local alias on store
//
// NB: We always set the FriendlyName based on 'certId'
//if (cert[PkcsObjectIdentifiers.Pkcs9AtFriendlyName] == null)
{
fName.Add(
new DerSequence(
PkcsObjectIdentifiers.Pkcs9AtFriendlyName,
new DerSet(new DerBmpString(certId))));
}
certBags.Add(new SafeBag(PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName)));
doneCerts.Add(cert.Certificate);
}
foreach (CertId certId in chainCerts.Keys)
{
X509CertificateEntry cert = (X509CertificateEntry)chainCerts[certId];
if (doneCerts.Contains(cert.Certificate))
continue;
CertBag cBag = new CertBag(
PkcsObjectIdentifiers.X509Certificate,
new DerOctetString(cert.Certificate.GetEncoded()));
Asn1EncodableVector fName = new Asn1EncodableVector();
foreach (string oid in cert.BagAttributeKeys)
{
// a certificate not immediately linked to a key doesn't require
// a localKeyID and will confuse some PKCS12 implementations.
//
// If we find one, we'll prune it out.
if (oid.Equals(PkcsObjectIdentifiers.Pkcs9AtLocalKeyID.Id))
continue;
fName.Add(
new DerSequence(
new DerObjectIdentifier(oid),
new DerSet(cert[oid])));
}
certBags.Add(new SafeBag(PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName)));
}
byte[] certBagsEncoding = new DerSequence(certBags).GetDerEncoded();
ContentInfo certsInfo;
if (password == null)
{
certsInfo = new ContentInfo(PkcsObjectIdentifiers.Data, new BerOctetString(certBagsEncoding));
}
else
{
byte[] certBytes = CryptPbeData(true, cAlgId, password, false, certBagsEncoding);
EncryptedData cInfo = new EncryptedData(PkcsObjectIdentifiers.Data, cAlgId, new BerOctetString(certBytes));
certsInfo = new ContentInfo(PkcsObjectIdentifiers.EncryptedData, cInfo.ToAsn1Object());
}
ContentInfo[] info = new ContentInfo[]{ keysInfo, certsInfo };
byte[] data = new AuthenticatedSafe(info).GetEncoded(
useDerEncoding ? Asn1Encodable.Der : Asn1Encodable.Ber);
ContentInfo mainInfo = new ContentInfo(PkcsObjectIdentifiers.Data, new BerOctetString(data));
//
// create the mac
//
MacData macData = null;
if (password != null)
{
byte[] mSalt = new byte[20];
random.NextBytes(mSalt);
byte[] mac = CalculatePbeMac(OiwObjectIdentifiers.IdSha1,
mSalt, MinIterations, password, false, data);
AlgorithmIdentifier algId = new AlgorithmIdentifier(
OiwObjectIdentifiers.IdSha1, DerNull.Instance);
DigestInfo dInfo = new DigestInfo(algId, mac);
macData = new MacData(dInfo, mSalt, MinIterations);
}
//
// output the Pfx
//
Pfx pfx = new Pfx(mainInfo, macData);
DerOutputStream derOut;
if (useDerEncoding)
{
derOut = new DerOutputStream(stream);
}
else
{
derOut = new BerOutputStream(stream);
}
derOut.WriteObject(pfx);
}
private BasicOcspResp GenerateResponse(
ISignatureCalculator signatureCalculator,
X509Certificate[] chain,
DateTime producedAt)
{
AlgorithmIdentifier signingAlgID = (AlgorithmIdentifier)signatureCalculator.AlgorithmDetails;
DerObjectIdentifier signingAlgorithm = signingAlgID.Algorithm;
Asn1EncodableVector responses = new Asn1EncodableVector();
foreach (ResponseObject respObj in list)
{
try
{
responses.Add(respObj.ToResponse());
}
catch (Exception e)
{
throw new OcspException("exception creating Request", e);
}
}
ResponseData tbsResp = new ResponseData(responderID.ToAsn1Object(), new DerGeneralizedTime(producedAt), new DerSequence(responses), responseExtensions);
DerBitString bitSig = null;
try
{
IStreamCalculator streamCalculator = signatureCalculator.CreateCalculator();
byte[] encoded = tbsResp.GetDerEncoded();
streamCalculator.Stream.Write(encoded, 0, encoded.Length);
streamCalculator.Stream.Close();
bitSig = new DerBitString(((IBlockResult)streamCalculator.GetResult()).DoFinal());
}
catch (Exception e)
{
throw new OcspException("exception processing TBSRequest: " + e, e);
}
AlgorithmIdentifier sigAlgId = OcspUtilities.GetSigAlgID(signingAlgorithm);
DerSequence chainSeq = null;
if (chain != null && chain.Length > 0)
{
Asn1EncodableVector v = new Asn1EncodableVector();
try
{
for (int i = 0; i != chain.Length; i++)
{
v.Add(
X509CertificateStructure.GetInstance(
Asn1Object.FromByteArray(chain[i].GetEncoded())));
}
}
catch (IOException e)
{
throw new OcspException("error processing certs", e);
}
catch (CertificateEncodingException e)
{
throw new OcspException("error encoding certs", e);
}
chainSeq = new DerSequence(v);
}
return new BasicOcspResp(new BasicOcspResponse(tbsResp, sigAlgId, bitSig, chainSeq));
}
internal virtual DerSequence CreateDerSequence(DefiniteLengthInputStream dIn) => DerSequence.FromVector(this.BuildDerEncodableVector(dIn));
internal virtual DerSequence CreateDerSequence(
DefiniteLengthInputStream dIn)
{
return(DerSequence.FromVector(BuildDerEncodableVector(dIn)));
}
public static bool verifySign(string signature, byte[] origdata, ICipherParameters pubkey) {
var dsa = SignerUtilities.GetSigner(ECDSA);
dsa.Init (false, pubkey);
dsa.BlockUpdate(origdata, 0, origdata.Length);
BigInteger r = new BigInteger (signature.Substring (0, 64), 16);
BigInteger s = new BigInteger (signature.Substring (64, 64), 16);
Asn1EncodableVector vec = new Asn1EncodableVector ();
vec.Add (new DerInteger (r));
vec.Add (new DerInteger (s));
Asn1Sequence seq = new DerSequence(vec);
byte[] sign = seq.GetEncoded ();
bool result = dsa.VerifySignature (sign);
return result;
}
internal virtual DerSequence CreateDerSequence(
DefiniteLengthInputStream dIn)
{
return(DerSequence.FromVector(ReadVector(dIn)));
}
public virtual int GenerateBytes(byte[] outBytes, int outOff, int len)
{
if ((outBytes.Length - len) < outOff)
{
throw new DataLengthException("output buffer too small");
}
long oBytes = len;
int outLen = digest.GetDigestSize();
//
// this is at odds with the standard implementation, the
// maximum value should be hBits * (2^32 - 1) where hBits
// is the digest output size in bits. We can't have an
// array with a long index at the moment...
//
if (oBytes > ((2L << 32) - 1))
{
throw new ArgumentException("Output length too large");
}
int cThreshold = (int)((oBytes + outLen - 1) / outLen);
byte[] dig = new byte[digest.GetDigestSize()];
uint counter = 1;
for (int i = 0; i < cThreshold; i++)
{
digest.BlockUpdate(z, 0, z.Length);
// KeySpecificInfo
DerSequence keyInfo = new DerSequence(
algorithm,
new DerOctetString(Pack.UInt32_To_BE(counter)));
// OtherInfo
Asn1EncodableVector v1 = new Asn1EncodableVector(keyInfo);
if (partyAInfo != null)
{
v1.Add(new DerTaggedObject(true, 0, new DerOctetString(partyAInfo)));
}
v1.Add(new DerTaggedObject(true, 2, new DerOctetString(Pack.UInt32_To_BE((uint)keySize))));
byte[] other = new DerSequence(v1).GetDerEncoded();
digest.BlockUpdate(other, 0, other.Length);
digest.DoFinal(dig, 0);
if (len > outLen)
{
Array.Copy(dig, 0, outBytes, outOff, outLen);
outOff += outLen;
len -= outLen;
}
else
{
Array.Copy(dig, 0, outBytes, outOff, len);
}
counter++;
}
digest.Reset();
return (int)oBytes;
}
public override void PerformTest()
{
DerUtf8String countryName = new DerUtf8String("Australia");
SignerLocation sl = new SignerLocation(countryName, null, null);
CheckConstruction(sl, countryName, null, null);
DerUtf8String localityName = new DerUtf8String("Melbourne");
sl = new SignerLocation(null, localityName, null);
CheckConstruction(sl, null, localityName, null);
sl = new SignerLocation(countryName, localityName, null);
CheckConstruction(sl, countryName, localityName, null);
Asn1Sequence postalAddress = new DerSequence(
new DerUtf8String("line 1"),
new DerUtf8String("line 2"));
sl = new SignerLocation(null, null, postalAddress);
CheckConstruction(sl, null, null, postalAddress);
sl = new SignerLocation(countryName, null, postalAddress);
CheckConstruction(sl, countryName, null, postalAddress);
sl = new SignerLocation(countryName, localityName, postalAddress);
CheckConstruction(sl, countryName, localityName, postalAddress);
sl = SignerLocation.GetInstance(null);
if (sl != null)
{
Fail("null GetInstance() failed.");
}
try
{
SignerLocation.GetInstance(new object());
Fail("GetInstance() failed to detect bad object.");
}
catch (ArgumentException)
{
// expected
}
//
// out of range postal address
//
postalAddress = new DerSequence(
new DerUtf8String("line 1"),
new DerUtf8String("line 2"),
new DerUtf8String("line 3"),
new DerUtf8String("line 4"),
new DerUtf8String("line 5"),
new DerUtf8String("line 6"),
new DerUtf8String("line 7"));
try
{
new SignerLocation(null, null, postalAddress);
Fail("constructor failed to detect bad postalAddress.");
}
catch (ArgumentException)
{
// expected
}
try
{
new SignerLocation(new DerSequence(new DerTaggedObject(2, postalAddress)));
Fail("sequence constructor failed to detect bad postalAddress.");
}
catch (ArgumentException)
{
// expected
}
try
{
new SignerLocation(new DerSequence(new DerTaggedObject(5, postalAddress)));
Fail("sequence constructor failed to detect bad tag.");
}
catch (ArgumentException)
{
// expected
}
}
/**
* Gets the bytes for the PKCS7SignedData object. Optionally the authenticatedAttributes
* in the signerInfo can also be set, OR a time-stamp-authority client
* may be provided.
* @param secondDigest the digest in the authenticatedAttributes
* @param signingTime the signing time in the authenticatedAttributes
* @param tsaClient TSAClient - null or an optional time stamp authority client
* @return byte[] the bytes for the PKCS7SignedData object
* @since 2.1.6
*/
public byte[] GetEncodedPKCS7(byte[] secondDigest, DateTime signingTime, ITSAClient tsaClient, byte[] ocsp) {
if (externalDigest != null) {
digest = externalDigest;
if (RSAdata != null)
RSAdata = externalRSAdata;
}
else if (externalRSAdata != null && RSAdata != null) {
RSAdata = externalRSAdata;
sig.BlockUpdate(RSAdata, 0, RSAdata.Length);
digest = sig.GenerateSignature();
}
else {
if (RSAdata != null) {
RSAdata = new byte[messageDigest.GetDigestSize()];
messageDigest.DoFinal(RSAdata, 0);
sig.BlockUpdate(RSAdata, 0, RSAdata.Length);
}
digest = sig.GenerateSignature();
}
// Create the set of Hash algorithms
Asn1EncodableVector digestAlgorithms = new Asn1EncodableVector();
foreach (string dal in digestalgos.Keys) {
Asn1EncodableVector algos = new Asn1EncodableVector();
algos.Add(new DerObjectIdentifier(dal));
algos.Add(DerNull.Instance);
digestAlgorithms.Add(new DerSequence(algos));
}
// Create the contentInfo.
Asn1EncodableVector v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(ID_PKCS7_DATA));
if (RSAdata != null)
v.Add(new DerTaggedObject(0, new DerOctetString(RSAdata)));
DerSequence contentinfo = new DerSequence(v);
// Get all the certificates
//
v = new Asn1EncodableVector();
foreach (X509Certificate xcert in certs) {
Asn1InputStream tempstream = new Asn1InputStream(new MemoryStream(xcert.GetEncoded()));
v.Add(tempstream.ReadObject());
}
DerSet dercertificates = new DerSet(v);
// Create signerinfo structure.
//
Asn1EncodableVector signerinfo = new Asn1EncodableVector();
// Add the signerInfo version
//
signerinfo.Add(new DerInteger(signerversion));
v = new Asn1EncodableVector();
v.Add(GetIssuer(signCert.GetTbsCertificate()));
v.Add(new DerInteger(signCert.SerialNumber));
signerinfo.Add(new DerSequence(v));
// Add the digestAlgorithm
v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(digestAlgorithm));
v.Add(DerNull.Instance);
signerinfo.Add(new DerSequence(v));
// add the authenticated attribute if present
if (secondDigest != null /*&& signingTime != null*/) {
signerinfo.Add(new DerTaggedObject(false, 0, GetAuthenticatedAttributeSet(secondDigest, signingTime, ocsp)));
}
// Add the digestEncryptionAlgorithm
v = new Asn1EncodableVector();
v.Add(new DerObjectIdentifier(digestEncryptionAlgorithm));
v.Add(DerNull.Instance);
signerinfo.Add(new DerSequence(v));
// Add the digest
signerinfo.Add(new DerOctetString(digest));
// When requested, go get and add the timestamp. May throw an exception.
// Added by Martin Brunecky, 07/12/2007 folowing Aiken Sam, 2006-11-15
// Sam found Adobe expects time-stamped SHA1-1 of the encrypted digest
if (tsaClient != null) {
byte[] tsImprint = new System.Security.Cryptography.SHA1CryptoServiceProvider().ComputeHash(digest);
byte[] tsToken = tsaClient.GetTimeStampToken(this, tsImprint);
if (tsToken != null) {
Asn1EncodableVector unauthAttributes = BuildUnauthenticatedAttributes(tsToken);
if (unauthAttributes != null) {
signerinfo.Add(new DerTaggedObject(false, 1, new DerSet(unauthAttributes)));
}
}
}
// Finally build the body out of all the components above
Asn1EncodableVector body = new Asn1EncodableVector();
body.Add(new DerInteger(version));
body.Add(new DerSet(digestAlgorithms));
body.Add(contentinfo);
body.Add(new DerTaggedObject(false, 0, dercertificates));
// if (crls.Count > 0) {
// v = new Asn1EncodableVector();
// for (Iterator i = crls.Iterator();i.HasNext();) {
// Asn1InputStream t = new Asn1InputStream(new ByteArrayInputStream((((X509CRL)i.Next()).GetEncoded())));
// v.Add(t.ReadObject());
// }
// DERSet dercrls = new DERSet(v);
// body.Add(new DERTaggedObject(false, 1, dercrls));
// }
// Only allow one signerInfo
body.Add(new DerSet(new DerSequence(signerinfo)));
// Now we have the body, wrap it in it's PKCS7Signed shell
// and return it
//
Asn1EncodableVector whole = new Asn1EncodableVector();
whole.Add(new DerObjectIdentifier(ID_PKCS7_SIGNED_DATA));
whole.Add(new DerTaggedObject(0, new DerSequence(body)));
MemoryStream bOut = new MemoryStream();
Asn1OutputStream dout = new Asn1OutputStream(bOut);
dout.WriteObject(new DerSequence(whole));
dout.Close();
return bOut.ToArray();
}
public override Asn1Object ToAsn1Object()
{
DerSequence hashSeq = new DerSequence(datagroupHash);
Asn1EncodableVector v = new Asn1EncodableVector(version, digestAlgorithmIdentifier, hashSeq);
if (versionInfo != null)
{
v.Add(versionInfo);
}
return new DerSequence(v);
}
private void doTestNullDerNullCert()
{
AsymmetricCipherKeyPair keyPair = GenerateLongFixedKeys();
AsymmetricKeyParameter pubKey = keyPair.Public;
AsymmetricKeyParameter privKey = keyPair.Private;
X509V3CertificateGenerator certGen = new X509V3CertificateGenerator();
certGen.SetSerialNumber(BigInteger.One);
certGen.SetIssuerDN(new X509Name("CN=Test"));
certGen.SetNotBefore(DateTime.UtcNow.AddSeconds(-50));
certGen.SetNotAfter(DateTime.UtcNow.AddSeconds(50));
certGen.SetSubjectDN(new X509Name("CN=Test"));
certGen.SetPublicKey(pubKey);
certGen.SetSignatureAlgorithm("MD5WithRSAEncryption");
X509Certificate cert = certGen.Generate(privKey);
X509CertificateStructure certStruct = X509CertificateStructure.GetInstance(
Asn1Object.FromByteArray(cert.GetEncoded()));
Asn1Encodable tbsCertificate = certStruct.TbsCertificate;
AlgorithmIdentifier sig = certStruct.SignatureAlgorithm;
DerSequence seq = new DerSequence(
tbsCertificate,
new AlgorithmIdentifier(sig.Algorithm),
certStruct.Signature);
try
{
// verify
byte[] encoded = seq.GetEncoded();
X509CertificateParser fact = new X509CertificateParser();
cert = fact.ReadCertificate(encoded);
cert.Verify(cert.GetPublicKey());
}
catch (Exception e)
{
Fail("doTestNullDerNull failed - exception " + e.ToString(), e);
}
}
private string GenerateX509Cert(string publicKey, string x509Subject)
{
Asn1Sequence asn1Sequence = null;
using (var reader = new StringReader(publicKey))
{
// Read the RSA public key from the input string.
var pemReader = new PemReader(reader);
var pemObject = pemReader.ReadPemObject();
asn1Sequence = (Asn1Sequence)Asn1Object.FromByteArray(pemObject.Content);
}
// Generate a TBS certificate. We use placeholder-like values since
// the consumer of this certificate should only use the subject
// public key info.
var tbsCertGen = new V3TbsCertificateGenerator();
tbsCertGen.SetSerialNumber(new DerInteger(1));
var signatureAlgId = new AlgorithmIdentifier(PkcsObjectIdentifiers.Sha1WithRsaEncryption, DerNull.Instance);
tbsCertGen.SetSignature(signatureAlgId);
tbsCertGen.SetIssuer(new X509Name("CN=Root Agency"));
var dateTimeNow = DateTime.Now;
tbsCertGen.SetStartDate(new Time(dateTimeNow.AddMinutes(-10)));
tbsCertGen.SetEndDate(new Time(dateTimeNow.AddYears(1))); // Openssh key doesn`t have any start/end date, this is to satisfy RDFE
tbsCertGen.SetSubject(new X509Name(x509Subject));
tbsCertGen.SetSubjectPublicKeyInfo(new SubjectPublicKeyInfo(new AlgorithmIdentifier(PkcsObjectIdentifiers.RsaEncryption, DerNull.Instance), asn1Sequence));
var tbsCert = tbsCertGen.GenerateTbsCertificate();
// Per RFC 3280, the layout of an X.509 v3 certificate looks like:
// Certificate ::= SEQUENCE {
// tbsCertificate TBSCertificate,
// signatureAlgorithm AlgorithmIdentifier,
// signatureValue BIT STRING
// }
// Since we don't have access to the private key, we cannot create
// a signature for the TBS. However, a valid certificate requires
// a bit string for the signature value, so we use a 0-byte array
// in its place.
Asn1EncodableVector v = new Asn1EncodableVector();
v.Add(tbsCert);
v.Add(signatureAlgId);
v.Add(new DerBitString(new byte[0]));
var derSequence = new DerSequence(v);
// Output the DER-encoded X509 certificate.
var sb = new StringBuilder();
using (var writer = new StringWriter(sb, CultureInfo.InvariantCulture))
{
var pemWriter = new PemWriter(writer);
pemWriter.WriteObject(new PemObject("CERTIFICATE", derSequence.GetEncoded()));
}
return sb.ToString();
}