public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(
string algorithm,
char[] passPhrase,
byte[] salt,
int iterationCount,
PrivateKeyInfo keyInfo)
{
if (!PbeUtilities.IsPbeAlgorithm(algorithm))
{
throw new ArgumentException("attempt to use non-PBE algorithm with PBE EncryptedPrivateKeyInfo generation");
}
IBufferedCipher cipher = PbeUtilities.CreateEngine(algorithm) as IBufferedCipher;
if (cipher == null)
{
// TODO Throw exception?
}
Asn1Encodable parameters = PbeUtilities.GenerateAlgorithmParameters(
algorithm, salt, iterationCount);
ICipherParameters keyParameters = PbeUtilities.GenerateCipherParameters(
algorithm, passPhrase, parameters);
cipher.Init(true, keyParameters);
byte[] keyBytes = keyInfo.GetEncoded();
byte[] encoding = cipher.DoFinal(keyBytes);
DerObjectIdentifier oid = PbeUtilities.GetObjectIdentifier(algorithm);
AlgorithmIdentifier algID = new AlgorithmIdentifier(oid, parameters);
return(new EncryptedPrivateKeyInfo(algID, encoding));
}
public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(
string algorithm,
char[] passPhrase,
byte[] salt,
int iterationCount,
PrivateKeyInfo keyInfo)
{
IBufferedCipher cipher = PbeUtilities.CreateEngine(algorithm) as IBufferedCipher;
if (cipher == null)
{
throw new Exception("Unknown encryption algorithm: " + algorithm);
}
Asn1Encodable pbeParameters = PbeUtilities.GenerateAlgorithmParameters(
algorithm, salt, iterationCount);
ICipherParameters cipherParameters = PbeUtilities.GenerateCipherParameters(
algorithm, passPhrase, pbeParameters);
cipher.Init(true, cipherParameters);
byte[] encoding = cipher.DoFinal(keyInfo.GetEncoded());
DerObjectIdentifier oid = PbeUtilities.GetObjectIdentifier(algorithm);
AlgorithmIdentifier algID = new AlgorithmIdentifier(oid, pbeParameters);
return(new EncryptedPrivateKeyInfo(algID, encoding));
}
public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(string algorithm, char[] passPhrase, byte[] salt, int iterationCount, PrivateKeyInfo keyInfo)
{
IBufferedCipher bufferedCipher = PbeUtilities.CreateEngine(algorithm) as IBufferedCipher;
if (bufferedCipher == null)
{
throw new global::System.Exception("Unknown encryption algorithm: " + algorithm);
}
Asn1Encodable asn1Encodable = PbeUtilities.GenerateAlgorithmParameters(algorithm, salt, iterationCount);
ICipherParameters parameters = PbeUtilities.GenerateCipherParameters(algorithm, passPhrase, asn1Encodable);
bufferedCipher.Init(forEncryption: true, parameters);
byte[] encoding = bufferedCipher.DoFinal(keyInfo.GetEncoded());
DerObjectIdentifier objectIdentifier = PbeUtilities.GetObjectIdentifier(algorithm);
AlgorithmIdentifier algId = new AlgorithmIdentifier(objectIdentifier, asn1Encodable);
return(new EncryptedPrivateKeyInfo(algId, encoding));
}
public static void Save(this Pkcs12Store store,
Stream stream,
string encryptionPassword,
string integrityPassword,
SecureRandom random)
{
const int saltSize = 20;
const int minIterations = 1024;
if (stream == null)
{
throw new ArgumentNullException("stream");
}
//if (null != encryptionPassword && encryptionPassword == integrityPassword)
//{
// store.Save(stream, encryptionPassword.ToArray(), random);
// return;
//}
if (random == null)
{
throw new ArgumentNullException("random");
}
var T = store.GetType();
Func <AsymmetricKeyParameter, SubjectKeyIdentifier> CreateSubjectKeyID = (pubKey_) =>
{
var method = T.GetMethod("CreateSubjectKeyID", BindingFlags.NonPublic | BindingFlags.Static);
return((SubjectKeyIdentifier)method.Invoke(store, new object[] { pubKey_ }));
};
Func <DerObjectIdentifier> keyAlgorithm = () =>
{
var property = T.GetField("keyAlgorithm", BindingFlags.NonPublic | BindingFlags.Instance);
return((DerObjectIdentifier)property.GetValue(store));
};
Func <DerObjectIdentifier> certAlgorithm = () =>
{
var property = T.GetField("certAlgorithm", BindingFlags.NonPublic | BindingFlags.Instance);
return((DerObjectIdentifier)property.GetValue(store));
};
//
// handle the key
//
Asn1EncodableVector keyS = new Asn1EncodableVector();
var keys = store.Aliases.OfType <string>().ToDictionary(alias => alias, store.GetKey);
foreach (string name in store.Aliases.OfType <string>())
{
byte[] kSalt = new byte[saltSize];
random.NextBytes(kSalt);
AsymmetricKeyEntry privKey = keys[name];
Asn1Encodable kInfo = null;
if (!string.IsNullOrEmpty(encryptionPassword))
{
kInfo = EncryptedPrivateKeyInfoFactory.CreateEncryptedPrivateKeyInfo(keyAlgorithm(), encryptionPassword.ToArray(), kSalt, minIterations, privKey.Key);
}
else
{
kInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(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 = store.GetCertificate(name);
AsymmetricKeyParameter pubKey = ct.Certificate.GetPublicKey();
SubjectKeyIdentifier subjectKeyID = CreateSubjectKeyID(pubKey);
kName.Add(new DerSequence(PkcsObjectIdentifiers.Pkcs9AtLocalKeyID, new DerSet(subjectKeyID)));
}
SafeBag kBag = null;
if (!string.IsNullOrEmpty(encryptionPassword))
{
kBag = new SafeBag(PkcsObjectIdentifiers.Pkcs8ShroudedKeyBag, kInfo.ToAsn1Object(), new DerSet(kName));
}
else
{
kBag = new SafeBag(PkcsObjectIdentifiers.KeyBag, 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());
ISet doneCerts = new HashSet();
foreach (string name in keys.Keys)
{
X509CertificateEntry certEntry = store.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)));
}
SafeBag sBag = new SafeBag(PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName));
certSeq.Add(sBag);
doneCerts.Add(certEntry.Certificate);
}
var certs = store.Aliases.OfType <string>().Select(store.GetCertificate);
foreach (var cert in certs)
{
//X509CertificateEntry cert = (X509CertificateEntry)certs[certId];
//if (keys[certId] != null)
// continue;
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;
}
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))));
fName.Add(new DerSequence(PkcsObjectIdentifiers.Pkcs9AtFriendlyName, new DerSet(new DerBmpString(CreateSubjectKeyID(cert.Certificate.GetPublicKey()).GetKeyIdentifier()))));
}
SafeBag sBag = new SafeBag(PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName));
certSeq.Add(sBag);
doneCerts.Add(cert.Certificate);
}
var chainCerts = store.Aliases.OfType <string>().Select(store.GetCertificateChain).Aggregate <IEnumerable <X509CertificateEntry>, IEnumerable <X509CertificateEntry> >(new List <X509CertificateEntry>(), (list, entries) => list.Union(entries));
foreach (var cert in chainCerts)
{
//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])));
}
SafeBag sBag = new SafeBag(PkcsObjectIdentifiers.CertBag, cBag.ToAsn1Object(), new DerSet(fName));
certSeq.Add(sBag);
}
derEncodedBytes = new DerSequence(certSeq).GetDerEncoded();
Func <bool, AlgorithmIdentifier, char[], bool, byte[], byte[]> CryptPbeData = (forEncryption_, algId_, password_, wrongPkcs12Zero_, data_) =>
{
var method = T.GetMethod("CryptPbeData", BindingFlags.NonPublic | BindingFlags.Static);
return((byte[])method.Invoke(store, new object[] { forEncryption_, algId_, password_, wrongPkcs12Zero_, data_ }));
};
ContentInfo[] info = null;
if (null != encryptionPassword)
{
byte[] certBytes = CryptPbeData(true, cAlgId, encryptionPassword.ToArray(), false, derEncodedBytes);
var cInfo = new EncryptedData(PkcsObjectIdentifiers.Data, cAlgId, new BerOctetString(certBytes));
info = new ContentInfo[]
{
new ContentInfo(PkcsObjectIdentifiers.Data, keyString),
new ContentInfo(PkcsObjectIdentifiers.EncryptedData, cInfo.ToAsn1Object())
};
}
else
{
var cInfo = new BerOctetString(derEncodedBytes);
info = new ContentInfo[]
{
new ContentInfo(PkcsObjectIdentifiers.Data, keyString),
new ContentInfo(PkcsObjectIdentifiers.Data, cInfo.ToAsn1Object())
};
}
byte[] data = new AuthenticatedSafe(info).GetEncoded(Asn1Encodable.Der);
ContentInfo mainInfo = new ContentInfo(PkcsObjectIdentifiers.Data, new BerOctetString(data));
//
// create the mac
//
byte[] mSalt = new byte[saltSize];
random.NextBytes(mSalt);
Func <DerObjectIdentifier, byte[], int, char[], bool, byte[], byte[]> CalculatePbeMac = (oid_, salt_, itCount_, password_, wrongPkcs12Zero_, data_) =>
{
var method = T.GetMethod("CalculatePbeMac", BindingFlags.NonPublic | BindingFlags.Static);
return((byte[])method.Invoke(store, new object[] { oid_, salt_, itCount_, password_, wrongPkcs12Zero_, data_ }));
};
MacData mData = null;
if (null != integrityPassword)
{
//byte[] mac = CalculatePbeMac(OiwObjectIdentifiers.IdSha1, mSalt, minIterations, integrityPassword.ToArray(), false, data);
byte[] mac = CalculatePbeMac(PbeUtilities.GetObjectIdentifier("PBEwithHmacSHA-256"), mSalt, minIterations, integrityPassword.ToArray(), false, data);
//AlgorithmIdentifier algId = new AlgorithmIdentifier(OiwObjectIdentifiers.IdSha1, DerNull.Instance);
AlgorithmIdentifier algId = new AlgorithmIdentifier(PbeUtilities.GetObjectIdentifier("PBEwithHmacSHA-256"), DerNull.Instance);
DigestInfo dInfo = new DigestInfo(algId, mac);
mData = new MacData(dInfo, mSalt, minIterations);
}
//
// output the Pfx
//
Pfx pfx = new Pfx(mainInfo, mData);
DerOutputStream derOut = new DerOutputStream(stream);
derOut.WriteObject(pfx);
}