private void lengthTest(string type, IList headers, byte[] data)
{
StringWriter sw = new StringWriter();
PemWriter pWrt = new PemWriter(sw);
PemObject pemObj = new PemObject(type, headers, data);
pWrt.WriteObject(pemObj);
pWrt.Writer.Close();
Assert.AreEqual(sw.ToString().Length, pWrt.GetOutputSize(pemObj));
}
private void EncryptedTest(AsymmetricKeyParameter privKey, string algorithm)
{
StringWriter sw = new StringWriter();
PemWriter pWrt = new PemWriter(sw);
Pkcs8Generator pkcs8 = new Pkcs8Generator(privKey, algorithm);
pkcs8.Password = "******".ToCharArray();
pWrt.WriteObject(pkcs8);
pWrt.Writer.Close();
String result = sw.ToString();
PemReader pRd = new PemReader(new StringReader(result), new Password("hello".ToCharArray()));
AsymmetricKeyParameter rdKey = (AsymmetricKeyParameter)pRd.ReadObject();
pRd.Reader.Close();
Assert.AreEqual(privKey, rdKey);
}
public string buildCsr()
{
string certparams = "CN=" + clientcode + ",E=" + email + ",C=AT,L=Vienna,ST=Austria,O=-,OU=-";
X509Name name = new X509Name(certparams);
RsaKeyPairGenerator rkpg = new RsaKeyPairGenerator();
rkpg.Init(new KeyGenerationParameters(new SecureRandom(), 2048));
keyPair = rkpg.GenerateKeyPair();
Pkcs10CertificationRequest csr = new Pkcs10CertificationRequest("SHA512WITHRSA", name, keyPair.Public, null, keyPair.Private);
StringBuilder stringBuilder = new StringBuilder();
PemWriter premWriter = new PemWriter(new StringWriter(stringBuilder));
premWriter.WriteObject(csr);
premWriter.Writer.Flush();
string pemCertificationRequest = stringBuilder.ToString();
return(pemCertificationRequest);
}
public ECKeyPair(int keylength)
{
ECKeyPairGenerator keyPairGenerator = new ECKeyPairGenerator();
keyPairGenerator.Init(new KeyGenerationParameters(new SecureRandom(), keylength));
AsymmetricCipherKeyPair keyPair = keyPairGenerator.GenerateKeyPair();
TextWriter writer1 = (TextWriter) new StringWriter();
PemWriter pemWriter1 = new PemWriter(writer1);
pemWriter1.WriteObject((object)keyPair.Private);
pemWriter1.Writer.Flush();
this.PrivateKey = writer1.ToString();
TextWriter writer2 = (TextWriter) new StringWriter();
PemWriter pemWriter2 = new PemWriter(writer2);
pemWriter2.WriteObject((object)keyPair.Public);
pemWriter2.Writer.Flush();
this.PublicKey = writer2.ToString();
}
/// <summary>
/// 生成PEM格式的公钥和密钥
/// </summary>
/// <param name="strength">长度</param>
/// <returns>(PublicKey,PrivateKey)</returns>
public static (string, string) GenerateKeyPair(int strength = 1024)
{
var r = new RsaKeyPairGenerator();
r.Init(new KeyGenerationParameters(new SecureRandom(), strength));
var keys = r.GenerateKeyPair();
TextWriter privateTextWriter = new StringWriter();
var privatePemWriter = new PemWriter(privateTextWriter);
privatePemWriter.WriteObject(keys.Private);
privatePemWriter.Writer.Flush();
TextWriter publicTextWriter = new StringWriter();
var publicPemWriter = new PemWriter(publicTextWriter);
publicPemWriter.WriteObject(keys.Public);
publicPemWriter.Writer.Flush();
return(publicTextWriter.ToString(), privateTextWriter.ToString());
}
public static void GeneratePKeys(int intSize)
{
//Generating p-128 keys 128 specifies strength
var keyPair = GenerateKeys(intSize);
TextWriter textWriter = new StringWriter();
PemWriter pemWriter = new PemWriter(textWriter);
pemWriter.WriteObject(keyPair.Private);
pemWriter.Writer.Flush();
string privateKey = textWriter.ToString();
pemWriter.WriteObject(keyPair.Public);
pemWriter.Writer.Flush();
string publicKey = textWriter.ToString();
Console.WriteLine(privateKey);
Console.WriteLine(publicKey);
}
public static string GetPrivateKeyInPkcs8(this MsRSA rsa)
{
var privateKeyParameters = rsa.ExportParameters(true);
var rsaKeyParameters = new RsaPrivateCrtKeyParameters(
new BigInteger(1, privateKeyParameters.Modulus),
new BigInteger(1, privateKeyParameters.Exponent),
new BigInteger(1, privateKeyParameters.D),
new BigInteger(1, privateKeyParameters.P),
new BigInteger(1, privateKeyParameters.Q),
new BigInteger(1, privateKeyParameters.DP),
new BigInteger(1, privateKeyParameters.DQ),
new BigInteger(1, privateKeyParameters.InverseQ));
using var writer = new StringWriter();
var pemWriter = new PemWriter(writer);
var pkcs8 = new Pkcs8Generator(rsaKeyParameters);
pemWriter.WriteObject(pkcs8);
pemWriter.Writer.Close();
return(writer.ToString());
}
private static string ConvertCertificateToPem(X509Certificate certificate)
{
var generator = new MiscPemGenerator(certificate);
string certificateString;
using (var textWriter = new StringWriter())
{
var writer = new PemWriter(textWriter);
writer.WriteObject(generator);
writer.Writer.Flush();
certificateString = textWriter.ToString();
}
if (string.IsNullOrWhiteSpace(certificateString))
{
throw new InvalidOperationException();
}
return(certificateString);
}
// converts bouncy castle objects of type
// X509Certificate, X509Crl, AsymmetricCipherKeyPair, AsymmetricKeyParameter,
// IX509AttributeCertificate, Pkcs10CertificationRequest, Asn1.Cms.ContentInfo
// to PEM format string
private static string ToPem(object obj)
{
using (var mem = new MemoryStream())
using (var writer = new StreamWriter(mem))
{
var pem = new PemWriter(writer);
pem.WriteObject(obj);
// force the pem write to flush it's data - kind of abnoxious you have to do that
pem.Writer.Flush();
// create a stream reader to read the data.
using (var reader = new StreamReader(mem))
{
mem.Position = 0;
string pemStr = reader.ReadToEnd();
return(pemStr);
}
}
}
private void EncryptedTest(AsymmetricKeyParameter privKey, string algorithm)
{
StringWriter sw = new StringWriter();
PemWriter pWrt = new PemWriter(sw);
Pkcs8Generator pkcs8 = new Pkcs8Generator(privKey, algorithm);
pkcs8.Password = "******".ToCharArray();
pWrt.WriteObject(pkcs8);
pWrt.Writer.Close();
String result = sw.ToString();
PemReader pRd = new PemReader(new StringReader(result), new Password("hello".ToCharArray()));
AsymmetricKeyParameter rdKey = (AsymmetricKeyParameter)pRd.ReadObject();
pRd.Reader.Close();
Assert.AreEqual(privKey, rdKey);
}
private void DoWriteReadTest(
AsymmetricKeyParameter akp,
string algorithm)
{
StringWriter sw = new StringWriter();
PemWriter pw = new PemWriter(sw);
pw.WriteObject(akp, algorithm, testPassword, random);
pw.Writer.Close();
string data = sw.ToString();
PemReader pr = new PemReader(new StringReader(data), new Password(testPassword));
AsymmetricCipherKeyPair kp = pr.ReadObject() as AsymmetricCipherKeyPair;
if (kp == null || !kp.Private.Equals(akp))
{
Fail("Failed to read back test key encoded with: " + algorithm);
}
}
/// <summary>
/// 私钥XML2PEM
/// </summary>
private static void XMLConvertToPEM()//XML格式密钥转PEM
{
var rsa2 = new RSACryptoServiceProvider();
using (var sr = new StreamReader("D:\\keys\\private.key"))
{
rsa2.FromXmlString(sr.ReadToEnd());
}
var p = rsa2.ExportParameters(true);
var key = new RsaPrivateCrtKeyParameters(
new Org.BouncyCastle.Math.BigInteger(1, p.Modulus), new Org.BouncyCastle.Math.BigInteger(1, p.Exponent), new Org.BouncyCastle.Math.BigInteger(1, p.D),
new Org.BouncyCastle.Math.BigInteger(1, p.P), new Org.BouncyCastle.Math.BigInteger(1, p.Q), new Org.BouncyCastle.Math.BigInteger(1, p.DP), new Org.BouncyCastle.Math.BigInteger(1, p.DQ),
new Org.BouncyCastle.Math.BigInteger(1, p.InverseQ));
using (var sw = new StreamWriter("D:\\keys\\PrivateKey.pem"))
{
var pemWriter = new PemWriter(sw);
pemWriter.WriteObject(key);
}
}
public static void CreateSelfSignedCertificate(Certificate certInfo,
string certificateFile, string keyFile)
{
var rndGen = new CryptoApiRandomGenerator();
var rnd = new SecureRandom(rndGen);
var keyGenParams = new KeyGenerationParameters(rnd, 2048);
var keyPairGen = new RsaKeyPairGenerator();
// var keyGenParams = new ECKeyGenerationParameters(SecObjectIdentifiers.SecP256r1, rnd);
// var keyPairGen = new ECKeyPairGenerator();
keyPairGen.Init(keyGenParams);
var keyPair = keyPairGen.GenerateKeyPair();
var certGen = new X509V3CertificateGenerator();
var serialNo = BigIntegers.CreateRandomInRange(
BigInteger.One, BigInteger.ValueOf(Int64.MaxValue), rnd);
certGen.SetSerialNumber(serialNo);
certGen.SetSubjectDN(certInfo.X509Name());
certGen.SetIssuerDN(certInfo.X509Name());
var now = DateTime.UtcNow.Date;
certGen.SetNotBefore(now);
certGen.SetNotAfter(now.AddDays(certInfo.ValidDays));
certGen.SetPublicKey(keyPair.Public);
var sigFac = new Asn1SignatureFactory("SHA256WithRSA", keyPair.Private, rnd);
var cert = certGen.Generate(sigFac);
using (var w = new StreamWriter(certificateFile, false, Encoding.ASCII)) {
var pemWriter = new PemWriter(w);
pemWriter.WriteObject(cert);
}
using (var w = new StreamWriter(keyFile, false, Encoding.ASCII))
{
var pemWriter = new PemWriter(w);
pemWriter.WriteObject(keyPair);
}
}
/// <summary>
/// Generate Pkcs8 format RSA key. Result: Index 0 is the private key and index 1 is the public key
/// </summary>
/// <param name="keySize">Key Size.Unit: bits</param>
/// <param name="format">Whether the format is true If it is standard pem file format</param>
/// <returns></returns>
public static List <string> Pkcs8Key(int keySize, bool format)
{
List <string> res = new List <string>();
IAsymmetricCipherKeyPairGenerator kpGen = GeneratorUtilities.GetKeyPairGenerator("RSA");
kpGen.Init(new KeyGenerationParameters(new SecureRandom(), keySize));
var keyPair = kpGen.GenerateKeyPair();
StringWriter swpri = new StringWriter();
PemWriter pWrtpri = new PemWriter(swpri);
Pkcs8Generator pkcs8 = new Pkcs8Generator(keyPair.Private);
pWrtpri.WriteObject(pkcs8);
pWrtpri.Writer.Close();
string privateKey = swpri.ToString();
if (!format)
{
privateKey = privateKey.Replace("-----BEGIN PRIVATE KEY-----", "").Replace("-----END PRIVATE KEY-----", "").Replace("\r\n", "");
}
res.Add(privateKey);
StringWriter swpub = new StringWriter();
PemWriter pWrtpub = new PemWriter(swpub);
pWrtpub.WriteObject(keyPair.Public);
pWrtpub.Writer.Close();
string publicKey = swpub.ToString();
if (!format)
{
publicKey = publicKey.Replace("-----BEGIN PUBLIC KEY-----", "").Replace("-----END PUBLIC KEY-----", "").Replace("\r\n", "");
}
res.Add(publicKey);
return(res);
}
private static string EncryptPrivateKey(AsymmetricKeyParameter privateKey, string password)
{
// Create salts
byte[] aesIv = new byte[16];
byte[] keySalt = new byte[20];
SecureRandom randomGen = new SecureRandom();
randomGen.NextBytes(aesIv);
randomGen.NextBytes(keySalt);
try {
PrivateKeyInfo decryptedPrivateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(privateKey);
// Prepare encryption
Pkcs5S2ParametersGenerator pkcs5S2Gen = new Pkcs5S2ParametersGenerator();
pkcs5S2Gen.Init(PKCS5PasswordToBytes(password.ToCharArray()), keySalt, hashIterationCount);
ICipherParameters cipherParams = pkcs5S2Gen.GenerateDerivedParameters(NistObjectIdentifiers.IdAes256Cbc.Id, 256);
IBufferedCipher cipher = CipherUtilities.GetCipher(NistObjectIdentifiers.IdAes256Cbc);
cipher.Init(true, new ParametersWithIV(cipherParams, aesIv));
// Generate encrypted private key info
Asn1OctetString aesIvOctetString = new DerOctetString(aesIv);
KeyDerivationFunc keyFunction = new KeyDerivationFunc(PkcsObjectIdentifiers.IdPbkdf2, new Pbkdf2Params(keySalt, hashIterationCount));
EncryptionScheme encScheme = new EncryptionScheme(NistObjectIdentifiers.IdAes256Cbc, aesIvOctetString);
Asn1EncodableVector encryptionInfo = new Asn1EncodableVector {
keyFunction, encScheme
};
AlgorithmIdentifier algIdentifier = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdPbeS2, new DerSequence(encryptionInfo));
EncryptedPrivateKeyInfo encryptedPrivateKeyInfo = new EncryptedPrivateKeyInfo(algIdentifier, cipher.DoFinal(decryptedPrivateKeyInfo.GetEncoded()));
Org.BouncyCastle.Utilities.IO.Pem.PemObject pkPemObject = new Org.BouncyCastle.Utilities.IO.Pem.PemObject("ENCRYPTED PRIVATE KEY", encryptedPrivateKeyInfo.GetEncoded());
// Write the PEM object to a string
StringWriter txtWriter = new StringWriter();
PemWriter pemWriter = new PemWriter(txtWriter);
pemWriter.WriteObject(pkPemObject);
pemWriter.Writer.Close();
return(txtWriter.ToString());
} catch (Exception e) {
throw new CryptoException("Could not encrypt private key.", e);
}
}
public static string GenRSAKeyPair()
{
var generator = new RsaKeyPairGenerator();
var seed = Encoding.UTF8.GetBytes("");
var secureRandom = new SecureRandom();
secureRandom.SetSeed(seed);
generator.Init(new KeyGenerationParameters(secureRandom, 4096));
var pair = generator.GenerateKeyPair();
//第一种方案
//var privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(pair.Private);
//var serializedPrivateBytes = privateKeyInfo.ToAsn1Object().GetDerEncoded();
//var serializedPrivate = Convert.ToBase64String(serializedPrivateBytes);
//Console.WriteLine("Private Key：" + serializedPrivate);
//var publickKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(pair.Public);
//var serializedPublicBytes = publickKeyInfo.ToAsn1Object().GetDerEncoded();
//var serializedPublic = Convert.ToBase64String(serializedPublicBytes);
//Console.WriteLine("Public Key：" + serializedPublic);
//第二种方案
var twPrivate = new StringWriter();
PemWriter pwPrivate = new PemWriter(twPrivate);
pwPrivate.WriteObject(pair.Private);
pwPrivate.Writer.Flush();
var privateKey = twPrivate.ToString();
Console.WriteLine("Private Key：" + privateKey);
var twPublic = new StringWriter();
PemWriter pwPublic = new PemWriter(twPublic);
pwPublic.WriteObject(pair.Public);
pwPublic.Writer.Flush();
var publicKey = twPublic.ToString();
Console.WriteLine("Public Key：" + publicKey);
return(privateKey);
}
public static KeyParameter Pkcs8(int keySize = 2048, bool format = false)
{
var keyGenerator = GeneratorUtilities.GetKeyPairGenerator("RSA");
keyGenerator.Init(new KeyGenerationParameters(new SecureRandom(), keySize));
var keyPair = keyGenerator.GenerateKeyPair();
var subjectPublicKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(keyPair.Public);
var privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(keyPair.Private);
if (!format)
{
return(new KeyParameter
{
PrivateKey = Base64.ToBase64String(privateKeyInfo.GetEncoded()),
PublicKey = Base64.ToBase64String(subjectPublicKeyInfo.GetEncoded())
});
}
var rsaKey = new KeyParameter();
using (var sw = new StringWriter())
{
var pWrt = new PemWriter(sw);
var pkcs8 = new Pkcs8Generator(keyPair.Private);
pWrt.WriteObject(pkcs8);
pWrt.Writer.Close();
rsaKey.PrivateKey = sw.ToString();
}
using (var sw = new StringWriter())
{
var pWrt = new PemWriter(sw);
pWrt.WriteObject(keyPair.Public);
pWrt.Writer.Close();
rsaKey.PublicKey = sw.ToString();
}
return(rsaKey);
}
private KeyContext GenerateSshKey()
{
var random = new SecureRandom(new CryptoApiRandomGenerator());
var strength = 2048;
var parameters = new KeyGenerationParameters(random, strength);
var keyPairGenerator = new RsaKeyPairGenerator();
keyPairGenerator.Init(parameters);
var keyPair = keyPairGenerator.GenerateKeyPair();
var keyContext = new KeyContext();
// var privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(keyPair.Private);
// var privateKey = Convert.ToBase64String(privateKeyInfo.GetEncoded(Asn1Encodable.Ber));
using (var writer = new StringWriter())
{
var pem = new PemWriter(writer);
pem.WriteObject(keyPair.Private);
keyContext.PrivateKey = writer.ToString();
}
var publicKeyParameter = (RsaKeyParameters)keyPair.Public;
using (var memory = new MemoryStream())
{
WriteBytes(memory, Encoding.ASCII.GetBytes("ssh-rsa"));
WriteBytes(memory, publicKeyParameter.Exponent.ToByteArray());
WriteBytes(memory, publicKeyParameter.Modulus.ToByteArray());
var publicKeyBase64 = Convert.ToBase64String(memory.ToArray());
keyContext.PublicKey = $"ssh-rsa {publicKeyBase64} generated-key";
}
_secretTracker.AddSecret(keyContext.PrivateKey);
return(keyContext);
}
/// <summary>
/// Generates the certificate for <see cref="ChallengeTypes.TlsAlpn01" /> validation.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="token">The <see cref="ChallengeTypes.TlsAlpn01" /> token.</param>
/// <param name="subjectName">Name of the subject.</param>
/// <param name="certificateKey">The certificate key pair.</param>
/// <returns>The tls-alpn-01 certificate in PEM.</returns>
public static string TlsAlpnCertificate(this IKey key, string token, string subjectName, IKey certificateKey)
{
var keyAuthz = key.KeyAuthorization(token);
var hashed = DigestUtilities.CalculateDigest("SHA256", Encoding.UTF8.GetBytes(keyAuthz));
var(_, keyPair) = signatureAlgorithmProvider.GetKeyPair(certificateKey.ToDer());
var signatureFactory = new Asn1SignatureFactory(certificateKey.Algorithm.ToPkcsObjectId(), keyPair.Private, new SecureRandom());
var gen = new X509V3CertificateGenerator();
var certName = new X509Name($"CN={subjectName}");
var serialNo = BigInteger.ProbablePrime(120, new SecureRandom());
gen.SetSerialNumber(serialNo);
gen.SetSubjectDN(certName);
gen.SetIssuerDN(certName);
gen.SetNotBefore(DateTime.UtcNow);
gen.SetNotAfter(DateTime.UtcNow.AddDays(7));
gen.SetPublicKey(keyPair.Public);
// SAN for validation
var gns = new[] { new GeneralName(GeneralName.DnsName, subjectName) };
gen.AddExtension(X509Extensions.SubjectAlternativeName.Id, false, new GeneralNames(gns));
// ACME-TLS/1
gen.AddExtension(
acmeValidationV1Id,
true,
hashed);
var newCert = gen.Generate(signatureFactory);
using (var sr = new StringWriter())
{
var pemWriter = new PemWriter(sr);
pemWriter.WriteObject(newCert);
return(sr.ToString());
}
}
/// <summary>
/// Convert RSA Private Key from PKCS8 to PKCS1 format
/// </summary>
/// <param name="privateKey">Private Key</param>
/// <returns></returns>
public static string PrivateKeyPkcs8ToPkcs1(string privateKey)
{
privateKey = RsaPemFormatHelper.Pkcs8PrivateKeyFormat(privateKey);
PemReader pr = new PemReader(new StringReader(privateKey));
RsaPrivateCrtKeyParameters kp = pr.ReadObject() as RsaPrivateCrtKeyParameters;
AsymmetricKeyParameter keyParameter = PrivateKeyFactory.CreateKey(PrivateKeyInfoFactory.CreatePrivateKeyInfo(kp));
StringWriter sw = new StringWriter();
PemWriter pWrt = new PemWriter(sw);
pWrt.WriteObject(keyParameter);
pWrt.Writer.Close();
string result = sw.ToString();
return(result);
}
private void keyPairTest(
string name,
AsymmetricCipherKeyPair pair)
{
MemoryStream bOut = new MemoryStream();
PemWriter pWrt = new PemWriter(new StreamWriter(bOut));
pWrt.WriteObject(pair.Public);
pWrt.Writer.Close();
PemReader pemRd = new PemReader(new StreamReader(new MemoryStream(bOut.ToArray(), false)));
AsymmetricKeyParameter pubK = (AsymmetricKeyParameter)pemRd.ReadObject();
if (!pubK.Equals(pair.Public))
{
Fail("Failed public key read: " + name);
}
bOut = new MemoryStream();
pWrt = new PemWriter(new StreamWriter(bOut));
pWrt.WriteObject(pair.Private);
pWrt.Writer.Close();
pemRd = new PemReader(new StreamReader(new MemoryStream(bOut.ToArray(), false)));
AsymmetricCipherKeyPair kPair = (AsymmetricCipherKeyPair)pemRd.ReadObject();
if (!kPair.Private.Equals(pair.Private))
{
Fail("Failed private key read: " + name);
}
if (!kPair.Public.Equals(pair.Public))
{
Fail("Failed private key public read: " + name);
}
}
public static void ExportCertificate(BcCertificate cert, EncodingFormat fmt, Stream target)
{
if (fmt == EncodingFormat.PEM)
{
using (var tw = new StringWriter())
{
var pw = new PemWriter(tw);
pw.WriteObject(cert);
var pemBytes = Encoding.UTF8.GetBytes(tw.GetStringBuilder().ToString());
target.Write(pemBytes, 0, pemBytes.Length);
}
}
else if (fmt == EncodingFormat.DER)
{
var der = cert.GetEncoded();
target.Write(der, 0, der.Length);
}
else
{
throw new NotSupportedException("unsupported encoding format");
}
}
/// <inheritdoc />
public async Task <string> ExportAsync(string name, char[] password, CancellationToken cancel = default(CancellationToken))
{
string pem = "";
var key = await Store.GetAsync(name, cancel);
UseEncryptedKey(key, pkey =>
{
using (var sw = new StringWriter())
{
var pkcs8 = new Pkcs8Generator(pkey, Pkcs8Generator.PbeSha1_3DES)
{
Password = password
};
var pw = new PemWriter(sw);
pw.WriteObject(pkcs8);
pw.Writer.Flush();
pem = sw.ToString();
}
});
return(pem);
}
private static void SavePemCertificate(CertificateChainWithPrivateKey certChainWithKey, string?password,
string certFilePath, bool chain)
{
var keyFilePath = Path.ChangeExtension(certFilePath, ".key");
Logger.TraceInformation($"saving key to {keyFilePath}");
Logger.TraceInformation($"saving cert to {certFilePath}");
if (File.Exists(certFilePath) || File.Exists(keyFilePath))
{
throw new ArgumentException("Cert or key file already exists. Please remove it or switch directories.");
}
Debug.Assert(certChainWithKey.Certificates.Length > 0);
if (chain)
{
using var writer = new StreamWriter(certFilePath);
var pem = new PemWriter(writer);
foreach (var cert in certChainWithKey.Certificates)
{
pem.WriteObject(cert);
}
}
else
{
using var writer = new StreamWriter(certFilePath);
var pem = new PemWriter(writer);
pem.WriteObject(certChainWithKey.Certificates[0]);
}
using (var writer = new StreamWriter(keyFilePath))
{
var pem = new PemWriter(writer);
var pemObjGenerator = password == null ?
(Org.BouncyCastle.Utilities.IO.Pem.PemObjectGenerator) new Pkcs8Generator(certChainWithKey.PrivateKey) :
new MiscPemGenerator(certChainWithKey.PrivateKey, "AES-256-CBC", password.ToCharArray(), new SecureRandom());
pem.WriteObject(pemObjGenerator);
}
}
public static AsymmetricCipherKeyPair CreateKeyAndSave(string name)
{
var fileName = GetKeyPath(name);
if (File.Exists(fileName))
{
Debug.WriteLine($"Deleting existing key: {fileName}");
File.Delete(fileName);
}
var key = CreateKey();
using (var fileWriter = new StreamWriter(fileName))
{
var pem = new PemWriter(fileWriter);
pem.WriteObject(key.Private);
pem.Writer.Flush();
fileWriter.Close();
}
return(key);
}
private static void PrintPrivateKey(BigInteger pkey, DerObjectIdentifier algId)
{
var ecpkey = new ECPrivateKeyParameters("ECGOST3410", pkey, algId);
var pkeyEnc = new DerSequence(
new DerInteger(0),
new DerSequence(
CryptoProObjectIdentifiers.GostR3410x2001,
new DerSequence(
ecpkey.PublicKeyParamSet,
CryptoProObjectIdentifiers.GostR3411x94CryptoProParamSet
)
),
new DerOctetString(new DerInteger(ecpkey.D))
);
var pemObject = new PemObject("PRIVATE KEY", pkeyEnc.GetDerEncoded());
using (var sw = new StreamWriter(Console.OpenStandardOutput())) {
var writer = new PemWriter(sw);
writer.WriteObject(pemObject);
}
}
static void CreatePem(RsaKeyParameters key)
{
TextWriter textWriter = new StringWriter();
PemWriter pemWriter = new PemWriter(textWriter);
string printKey;
string fileLocation;
pemWriter.WriteObject(key);
pemWriter.Writer.Flush();
printKey = textWriter.ToString();
if (key.IsPrivate)
{
fileLocation = privateKeyFileLocation;
}
else
{
fileLocation = publicKeyFileLocation;
}
File.WriteAllText(fileLocation, printKey);
}
/// <summary>
/// Generate RSA key in Pkcs1 format. Result: Index 0 is the private key and index 1 is the public key
/// </summary>
/// <param name="keySize">Key Size.Unit: bits</param>
/// <param name="format">Whether the format is true If it is standard pem file format</param>
/// <returns></returns>
public static List <string> Pkcs1Key(int keySize, bool format = true)
{
var res = new List <string>();
var kpGen = GeneratorUtilities.GetKeyPairGenerator("RSA");
kpGen.Init(new KeyGenerationParameters(new SecureRandom(), keySize));
var keyPair = kpGen.GenerateKeyPair();
var sw = new StringWriter();
var pWrt = new PemWriter(sw);
pWrt.WriteObject(keyPair.Private);
pWrt.Writer.Flush();
var privateKey = sw.ToString();
if (!format)
{
privateKey = privateKey.Replace("-----BEGIN RSA PRIVATE KEY-----", "").Replace("-----END RSA PRIVATE KEY-----", "").Replace("\r\n", "");
}
res.Add(privateKey);
var swpub = new StringWriter();
var pWrtpub = new PemWriter(swpub);
pWrtpub.WriteObject(keyPair.Public);
pWrtpub.Writer.Flush();
var publicKey = swpub.ToString();
if (!format)
{
publicKey = publicKey.Replace("-----BEGIN PUBLIC KEY-----", "").Replace("-----END PUBLIC KEY-----", "").Replace("\r\n", "");
}
res.Add(publicKey);
return(res);
}
public static string GenerateRSAKeyAsPEM(int keySize)
{
try
{
IAsymmetricCipherKeyPairGenerator generator = GeneratorUtilities.GetKeyPairGenerator("RSA");
RsaKeyGenerationParameters generatorParams = new RsaKeyGenerationParameters(
BigInteger.ValueOf(0x10001), new SecureRandom(), keySize, 12);
generator.Init(generatorParams);
AsymmetricCipherKeyPair keyPair = generator.GenerateKeyPair();
using (StringWriter sw = new StringWriter())
{
PemWriter pemWriter = new PemWriter(sw);
pemWriter.WriteObject(keyPair);
return(sw.ToString());
}
}
catch (Exception e)
{
logger.Error($"Could not generate new key pair: {e.Message}");
return(null);
}
}
/// <summary>
/// Convert RSA Private Key from PKCS1 to PKCS8 format
/// </summary>
/// <param name="privateKey">Private Key</param>
/// <returns></returns>
public static string PrivateKeyPkcs1ToPkcs8(string privateKey)
{
privateKey = RsaPemFormatHelper.Pkcs1PrivateKeyFormat(privateKey);
PemReader pr = new PemReader(new StringReader(privateKey));
AsymmetricCipherKeyPair kp = pr.ReadObject() as AsymmetricCipherKeyPair;
StringWriter sw = new StringWriter();
PemWriter pWrt = new PemWriter(sw);
Pkcs8Generator pkcs8 = new Pkcs8Generator(kp.Private);
pWrt.WriteObject(pkcs8);
pWrt.Writer.Close();
string result = sw.ToString();
return(result);
}
/// <summary>
/// Private Key Convert xml->Pkcs8
/// </summary>
/// <param name="privateKey"></param>
/// <returns></returns>
public static string PrivateKeyXmlToPkcs8(string privateKey)
{
XElement root = XElement.Parse(privateKey);
//Modulus
var modulus = root.Element("Modulus");
//Exponent
var exponent = root.Element("Exponent");
//P
var p = root.Element("P");
//Q
var q = root.Element("Q");
//DP
var dp = root.Element("DP");
//DQ
var dq = root.Element("DQ");
//InverseQ
var inverseQ = root.Element("InverseQ");
//D
var d = root.Element("D");
RsaPrivateCrtKeyParameters rsaPrivateCrtKeyParameters = new RsaPrivateCrtKeyParameters(
new BigInteger(1, Convert.FromBase64String(modulus.Value)),
new BigInteger(1, Convert.FromBase64String(exponent.Value)),
new BigInteger(1, Convert.FromBase64String(d.Value)),
new BigInteger(1, Convert.FromBase64String(p.Value)),
new BigInteger(1, Convert.FromBase64String(q.Value)),
new BigInteger(1, Convert.FromBase64String(dp.Value)),
new BigInteger(1, Convert.FromBase64String(dq.Value)),
new BigInteger(1, Convert.FromBase64String(inverseQ.Value)));
StringWriter swpri = new StringWriter();
PemWriter pWrtpri = new PemWriter(swpri);
Pkcs8Generator pkcs8 = new Pkcs8Generator(rsaPrivateCrtKeyParameters);
pWrtpri.WriteObject(pkcs8);
pWrtpri.Writer.Close();
return(swpri.ToString());
}
public static string PublicKeyXmlToPem(string publicKey)
{
var root = XElement.Parse(publicKey);
//Modulus
var modulus = root.Element("Modulus");
//Exponent
var exponent = root.Element("Exponent");
var rsaKeyParameters = new RsaKeyParameters(
false,
new BigInteger(1, Convert.FromBase64String(modulus !.Value)),
new BigInteger(1, Convert.FromBase64String(exponent !.Value)));
using var writer = new StringWriter();
var pemWriter = new PemWriter(writer);
pemWriter.WriteObject(rsaKeyParameters);
pemWriter.Writer.Close();
return(writer.ToString());
}
public void TestPkcs8Plain()
{
IAsymmetricCipherKeyPairGenerator kpGen = GeneratorUtilities.GetKeyPairGenerator("RSA");
kpGen.Init(new KeyGenerationParameters(new SecureRandom(), 1024));
IAsymmetricKeyParameter privKey = kpGen.GenerateKeyPair().Private;
StringWriter sw = new StringWriter();
PemWriter pWrt = new PemWriter(sw);
Pkcs8Generator pkcs8 = new Pkcs8Generator(privKey);
pWrt.WriteObject(pkcs8);
pWrt.Writer.Close();
string result = sw.ToString();
PemReader pRd = new PemReader(new StringReader(result), new Password("hello".ToCharArray()));
IAsymmetricKeyParameter rdKey = (AsymmetricKeyParameter)pRd.ReadObject();
pRd.Reader.Close();
Assert.AreEqual(privKey, rdKey);
}
public override void PerformTest()
{
IPasswordFinder pGet = new Password("secret".ToCharArray());
PemReader pemRd = OpenPemResource("test.pem", pGet);
IAsymmetricCipherKeyPair pair;
object o;
while ((o = pemRd.ReadObject()) != null)
{
// if (o is AsymmetricCipherKeyPair)
// {
// ackp = (AsymmetricCipherKeyPair)o;
//
// Console.WriteLine(ackp.Public);
// Console.WriteLine(ackp.Private);
// }
// else
// {
// Console.WriteLine(o.ToString());
// }
}
//
// pkcs 7 data
//
pemRd = OpenPemResource("pkcs7.pem", null);
ContentInfo d = (ContentInfo)pemRd.ReadObject();
if (!d.ContentType.Equals(CmsObjectIdentifiers.EnvelopedData))
{
Fail("failed envelopedData check");
}
/*
{
//
// ECKey
//
pemRd = OpenPemResource("eckey.pem", null);
// TODO Resolve return type issue with EC keys and fix PemReader to return parameters
// ECNamedCurveParameterSpec spec = (ECNamedCurveParameterSpec)pemRd.ReadObject();
pair = (AsymmetricCipherKeyPair)pemRd.ReadObject();
ISigner sgr = SignerUtilities.GetSigner("ECDSA");
sgr.Init(true, pair.Private);
byte[] message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };
sgr.BlockUpdate(message, 0, message.Length);
byte[] sigBytes = sgr.GenerateSignature();
sgr.Init(false, pair.Public);
sgr.BlockUpdate(message, 0, message.Length);
if (!sgr.VerifySignature(sigBytes))
{
Fail("EC verification failed");
}
// TODO Resolve this issue with the algorithm name, study Java version
// if (!((ECPublicKeyParameters) pair.Public).AlgorithmName.Equals("ECDSA"))
// {
// Fail("wrong algorithm name on public got: " + ((ECPublicKeyParameters) pair.Public).AlgorithmName);
// }
//
// if (!((ECPrivateKeyParameters) pair.Private).AlgorithmName.Equals("ECDSA"))
// {
// Fail("wrong algorithm name on private got: " + ((ECPrivateKeyParameters) pair.Private).AlgorithmName);
// }
}
*/
//
// writer/parser test
//
IAsymmetricCipherKeyPairGenerator kpGen = GeneratorUtilities.GetKeyPairGenerator("RSA");
kpGen.Init(
new RsaKeyGenerationParameters(
BigInteger.ValueOf(0x10001),
new SecureRandom(),
768,
25));
pair = kpGen.GenerateKeyPair();
keyPairTest("RSA", pair);
// kpGen = KeyPairGenerator.getInstance("DSA");
// kpGen.initialize(512, new SecureRandom());
DsaParametersGenerator pGen = new DsaParametersGenerator();
pGen.Init(512, 80, new SecureRandom());
kpGen = GeneratorUtilities.GetKeyPairGenerator("DSA");
kpGen.Init(
new DsaKeyGenerationParameters(
new SecureRandom(),
pGen.GenerateParameters()));
pair = kpGen.GenerateKeyPair();
keyPairTest("DSA", pair);
//
// PKCS7
//
MemoryStream bOut = new MemoryStream();
PemWriter pWrt = new PemWriter(new StreamWriter(bOut));
pWrt.WriteObject(d);
pWrt.Writer.Close();
pemRd = new PemReader(new StreamReader(new MemoryStream(bOut.ToArray(), false)));
d = (ContentInfo)pemRd.ReadObject();
if (!d.ContentType.Equals(CmsObjectIdentifiers.EnvelopedData))
{
Fail("failed envelopedData recode check");
}
// OpenSSL test cases (as embedded resources)
doOpenSslDsaTest("unencrypted");
doOpenSslRsaTest("unencrypted");
doOpenSslTests("aes128");
doOpenSslTests("aes192");
doOpenSslTests("aes256");
doOpenSslTests("blowfish");
doOpenSslTests("des1");
doOpenSslTests("des2");
doOpenSslTests("des3");
doOpenSslTests("rc2_128");
doOpenSslDsaTest("rc2_40_cbc");
doOpenSslRsaTest("rc2_40_cbc");
doOpenSslDsaTest("rc2_64_cbc");
doOpenSslRsaTest("rc2_64_cbc");
// TODO Figure out why exceptions differ for commented out cases
doDudPasswordTest("7fd98", 0, "Corrupted stream - out of bounds length found");
doDudPasswordTest("ef677", 1, "Corrupted stream - out of bounds length found");
// doDudPasswordTest("800ce", 2, "cannot recognise object in stream");
doDudPasswordTest("b6cd8", 3, "DEF length 81 object truncated by 56");
doDudPasswordTest("28ce09", 4, "DEF length 110 object truncated by 28");
doDudPasswordTest("2ac3b9", 5, "DER length more than 4 bytes: 11");
doDudPasswordTest("2cba96", 6, "DEF length 100 object truncated by 35");
doDudPasswordTest("2e3354", 7, "DEF length 42 object truncated by 9");
doDudPasswordTest("2f4142", 8, "DER length more than 4 bytes: 14");
doDudPasswordTest("2fe9bb", 9, "DER length more than 4 bytes: 65");
doDudPasswordTest("3ee7a8", 10, "DER length more than 4 bytes: 57");
doDudPasswordTest("41af75", 11, "malformed sequence in DSA private key");
doDudPasswordTest("1704a5", 12, "corrupted stream detected");
// doDudPasswordTest("1c5822", 13, "corrupted stream detected");
// doDudPasswordTest("5a3d16", 14, "corrupted stream detected");
doDudPasswordTest("8d0c97", 15, "corrupted stream detected");
doDudPasswordTest("bc0daf", 16, "corrupted stream detected");
doDudPasswordTest("aaf9c4d",17, "Corrupted stream - out of bounds length found");
// encrypted private key test
pGet = new Password("password".ToCharArray());
pemRd = OpenPemResource("enckey.pem", pGet);
RsaPrivateCrtKeyParameters privKey = (RsaPrivateCrtKeyParameters)pemRd.ReadObject();
if (!privKey.PublicExponent.Equals(new BigInteger("10001", 16)))
{
Fail("decryption of private key data check failed");
}
// general PKCS8 test
pGet = new Password("password".ToCharArray());
pemRd = OpenPemResource("pkcs8test.pem", pGet);
while ((privKey = (RsaPrivateCrtKeyParameters)pemRd.ReadObject()) != null)
{
if (!privKey.PublicExponent.Equals(new BigInteger("10001", 16)))
{
Fail("decryption of private key data check failed");
}
}
}
private void keyPairTest(
string name,
IAsymmetricCipherKeyPair pair)
{
MemoryStream bOut = new MemoryStream();
PemWriter pWrt = new PemWriter(new StreamWriter(bOut));
pWrt.WriteObject(pair.Public);
pWrt.Writer.Close();
PemReader pemRd = new PemReader(new StreamReader(new MemoryStream(bOut.ToArray(), false)));
IAsymmetricKeyParameter pubK = (AsymmetricKeyParameter) pemRd.ReadObject();
if (!pubK.Equals(pair.Public))
{
Fail("Failed public key read: " + name);
}
bOut = new MemoryStream();
pWrt = new PemWriter(new StreamWriter(bOut));
pWrt.WriteObject(pair.Private);
pWrt.Writer.Close();
pemRd = new PemReader(new StreamReader(new MemoryStream(bOut.ToArray(), false)));
IAsymmetricCipherKeyPair kPair = (AsymmetricCipherKeyPair) pemRd.ReadObject();
if (!kPair.Private.Equals(pair.Private))
{
Fail("Failed private key read: " + name);
}
if (!kPair.Public.Equals(pair.Public))
{
Fail("Failed private key public read: " + name);
}
}
