/// <summary>
/// Decrypts data using the private key.
/// </summary>
public override byte[] Decrypt(byte[] data, RSAEncryptionPadding padding)
{
unsafe
{
return EncryptOrDecrypt(data, padding, Interop.NCrypt.NCryptDecrypt);
}
}
private static void TestEncryptDecryptRoundTrip(byte[] plainText, RSAEncryptionPadding paddingMode, int expectedCipherSize)
{
using (RSA rsaCng = new RSACng())
{
byte[] cipher = rsaCng.Encrypt(plainText, paddingMode);
// RSACng.Encrypt() is intentionally non-deterministic so we can verify that we got back a cipher of the right length
// but nothing about the contents.
Assert.Equal(expectedCipherSize, cipher.Length);
// But we can test to see that it decrypts back to the original.
byte[] plainTextAgain = rsaCng.Decrypt(cipher, paddingMode);
Assert.Equal<byte>(plainText, plainTextAgain);
}
}
//
// Conveniently, Encrypt() and Decrypt() are identical save for the actual P/Invoke call to CNG. Thus, both
// APIs invoke this common helper with the "transform" parameter determining whether encryption or decryption is done.
//
private byte[] EncryptOrDecrypt(byte[] data, RSAEncryptionPadding padding, EncryptOrDecryptAction encryptOrDecrypt)
{
if (data == null)
throw new ArgumentNullException(nameof(data));
if (padding == null)
throw new ArgumentNullException(nameof(padding));
unsafe
{
using (SafeNCryptKeyHandle keyHandle = GetDuplicatedKeyHandle())
{
switch (padding.Mode)
{
case RSAEncryptionPaddingMode.Pkcs1:
return EncryptOrDecrypt(keyHandle, data, AsymmetricPaddingMode.NCRYPT_PAD_PKCS1_FLAG, null, encryptOrDecrypt);
case RSAEncryptionPaddingMode.Oaep:
{
using (SafeUnicodeStringHandle safeHashAlgorithmName = new SafeUnicodeStringHandle(padding.OaepHashAlgorithm.Name))
{
BCRYPT_OAEP_PADDING_INFO paddingInfo = new BCRYPT_OAEP_PADDING_INFO()
{
pszAlgId = safeHashAlgorithmName.DangerousGetHandle(),
// It would nice to put randomized data here but RSAEncryptionPadding does not at this point provide support for this.
pbLabel = IntPtr.Zero,
cbLabel = 0,
};
return EncryptOrDecrypt(keyHandle, data, AsymmetricPaddingMode.NCRYPT_PAD_OAEP_FLAG, &paddingInfo, encryptOrDecrypt);
}
}
default:
throw new CryptographicException(SR.Cryptography_UnsupportedPaddingMode);
}
}
}
}
public override byte[] Decrypt(byte[] data, RSAEncryptionPadding padding)
{
if (data == null)
throw new ArgumentNullException("data");
if (padding == null)
throw new ArgumentNullException("padding");
Interop.Crypto.RsaPadding rsaPadding = GetInteropPadding(padding);
SafeRsaHandle key = _key.Value;
CheckInvalidKey(key);
byte[] buf = new byte[Interop.Crypto.RsaSize(key)];
int returnValue = Interop.Crypto.RsaPrivateDecrypt(
data.Length,
data,
buf,
key,
rsaPadding);
CheckReturn(returnValue);
// If the padding mode is RSA_NO_PADDING then the size of the decrypted block
// will be RSA_size, so let's just return buf.
//
// If any padding was used, then some amount (determined by the padding algorithm)
// will have been reduced, and only returnValue bytes were part of the decrypted
// body, so copy the decrypted bytes to an appropriately sized array before
// returning it.
if (returnValue == buf.Length)
{
return buf;
}
byte[] plainBytes = new byte[returnValue];
Array.Copy(buf, 0, plainBytes, 0, returnValue);
return plainBytes;
}
public override byte[] Decrypt(byte[] data, RSAEncryptionPadding padding)
{
if (data == null)
throw new ArgumentNullException("data");
if (padding == null)
throw new ArgumentNullException("padding");
Interop.libcrypto.OpenSslRsaPadding openSslPadding;
if (padding == RSAEncryptionPadding.Pkcs1)
{
openSslPadding = Interop.libcrypto.OpenSslRsaPadding.RSA_PKCS1_PADDING;
}
else if (padding == RSAEncryptionPadding.OaepSHA1)
{
openSslPadding = Interop.libcrypto.OpenSslRsaPadding.RSA_PKCS1_OAEP_PADDING;
}
else
{
throw PaddingModeNotSupported();
}
return Decrypt(data, openSslPadding);
}
public override byte[] Encrypt(byte[] data, RSAEncryptionPadding padding)
{
throw new NotImplementedException(SR.WorkInProgress);
}
public virtual bool TryEncrypt(System.ReadOnlySpan <byte> data, System.Span <byte> destination, RSAEncryptionPadding padding, out int bytesWritten)
{
throw null;
}
protected override byte[] Encrypt(RSA rsa, byte[] data, RSAEncryptionPadding padding) => TryWithOutputArray(dest => rsa.TryEncrypt(data, dest, padding, out int bytesWritten) ? (true, bytesWritten) : (false, 0));
/// <summary>
/// RSA private key is decrypted
/// </summary>
/// <param name="data">Need to decrypt the data</param>
/// <param name="padding">Padding algorithm</param>
/// <returns></returns>
public string DecryptByPrivateKey(string data, RSAEncryptionPadding padding)
{
return(DecryptByPrivateKey(Convert.FromBase64String(data), padding));
}
static byte[] DecryptData(X509Certificate2 cert, byte[] data, RSAEncryptionPadding padding)
{
using (RSA rsa = cert.GetRSAPrivateKey())
return(rsa.Decrypt(data, padding));
}
private static Interop.Crypto.RsaPadding GetInteropPadding(RSAEncryptionPadding padding)
{
if (padding == RSAEncryptionPadding.Pkcs1)
{
return Interop.Crypto.RsaPadding.Pkcs1;
}
else if (padding == RSAEncryptionPadding.OaepSHA1)
{
return Interop.Crypto.RsaPadding.OaepSHA1;
}
else
{
throw PaddingModeNotSupported();
}
}
/// <summary> /// 将Base64字符串进行RSA解密，返回解密后的字符串，默认为【Xml格式】的私钥，默认【不分块】 /// </summary> /// <param name="data">要解密的【Base64字符串】</param> /// <param name="privateKey">私钥字符串</param> /// <param name="padding">填充方式枚举值</param> /// <param name="isXmlKey">是否为【Xml格式】私钥</param> /// <param name="autoBlock">是否自动分块</param> /// <returns></returns> public string Decrypt(string data, string privateKey, RSAEncryptionPadding padding, bool isXmlKey = true, bool autoBlock = false) => Decrypt(data.Base64ToBytes(), privateKey, padding, isXmlKey, autoBlock);
public static ICryptoValue DecryptByPrivateKey(byte[] cipherData, string privateKey, RsaKeyFormat format, RSAEncryptionPadding padding)
{
var key = RsaKeyGenerator.GeneratePrivateKey(privateKey, format);
var function = Factory.Create(key);
return(function.DecryptByPrivateKey(cipherData, padding));
}
public static ICryptoValue DecryptByPrivateKey(string cipherText, string privateKey, RsaKeyFormat format, RSAEncryptionPadding padding, Encoding encoding = null)
{
var key = RsaKeyGenerator.GeneratePrivateKey(privateKey, format);
var function = Factory.Create(key);
return(function.DecryptByPrivateKey(cipherText, padding, encoding));
}
public static ICryptoValue EncryptByPublicKey(byte[] originalData, string publicKey, RsaKeyFormat format, RSAEncryptionPadding padding)
{
var key = RsaKeyGenerator.GeneratePublicKey(publicKey, format);
var function = Factory.Create(key);
return(function.EncryptByPublicKey(originalData, padding));
}
public static ICryptoValue EncryptByPublicKey(string originalText, string publicKey, RsaKeyFormat format, RSAEncryptionPadding padding, Encoding encoding = null)
{
var key = RsaKeyGenerator.GeneratePublicKey(publicKey, format);
var function = Factory.Create(key);
return(function.EncryptByPublicKey(originalText, padding, encoding));
}
/// <summary>
/// RSA 私钥解密。
/// </summary>
/// <param name="cipher">密文的 Base64 编码结果。</param>
/// <param name="privateKey">私钥（PEM 格式）。</param>
/// <param name="encryptionPadding">对齐方式（默认 <see cref="RSAEncryptionPadding.Pkcs1" />）。</param>
/// <returns>明文。</returns>
public static string Decrypt(string cipher, string privateKey, RSAEncryptionPadding encryptionPadding)
{
return(Decrypt(cipher, privateKey, Encoding.UTF8, encryptionPadding));
}
/// <summary>
/// RSA 私钥解密。
/// </summary>
/// <param name="cipher">密文的 Base64 编码结果。</param>
/// <param name="privateKey">私钥（PEM 格式）。</param>
/// <param name="encoding">字符集（默认 <see cref="Encoding.UTF8" />）。</param>
/// <param name="encryptionPadding">对齐方式（默认 <see cref="RSAEncryptionPadding.Pkcs1" />）。</param>
/// <returns>明文。</returns>
public static string Decrypt(string cipher, string privateKey, Encoding encoding, RSAEncryptionPadding encryptionPadding)
{
Guard.CheckArgumentNotNull(encoding, nameof(encoding));
privateKey = FormatPublicOrPrivateKey(privateKey);
byte[] bytes = Decrypt(Convert.FromBase64String(cipher), Convert.FromBase64String(privateKey), encryptionPadding);
return(encoding.GetString(bytes));
}
/// <summary>
/// 使用公钥 RSA 加密。
/// </summary>
/// <param name="plain">明文。</param>
/// <param name="publicKey">公钥（PEM 格式）。</param>
/// <param name="encryptionPadding">对齐方式（默认 <see cref="RSAEncryptionPadding.Pkcs1" />）。</param>
/// <returns>密文的 Base64 编码结果。</returns>
public static string Encrypt(string plain, string publicKey, RSAEncryptionPadding encryptionPadding)
{
return(Encrypt(plain, publicKey, Encoding.UTF8, encryptionPadding));
}
public override byte[] Encrypt(byte[] data, RSAEncryptionPadding padding)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
if (padding == null)
{
throw new ArgumentNullException("padding");
}
if (padding == RSAEncryptionPadding.Pkcs1)
{
return NCryptNative.EncryptDataPkcs1(KeyHandle, data);
}
else if (padding.Mode == RSAEncryptionPaddingMode.Oaep)
{
return NCryptNative.EncryptDataOaep(KeyHandle, data, padding.OaepHashAlgorithm.Name);
}
else
{
// no other padding possibilities at present, but we might version independently from more being added.
throw new CryptographicException(SR.GetString(SR.Cryptography_UnsupportedPaddingMode));
};
}
public EncryptedConsulKeyAclProvider(string encryptedKeyName, X509Certificate2 encryptionCertifcate, RSAEncryptionPadding padding)
{
if (!encryptionCertifcate.HasPrivateKey)
{
throw new ArgumentException("Certificate needs to have the private key to decrypt");
}
if (encryptedKeyName.StartsWith("/"))
{
encryptedKeyName = encryptedKeyName.Substring(1);
}
using (var httpClient = HttpUtils.CreateClient(null))
{
var keyValues = httpClient.GetStringAsync($"/v1/kv/{encryptedKeyName}").Result;
var keys = JsonConvert.DeserializeObject <KeyValue[]>(keyValues);
if (keys.Length != 1)
{
throw new ArgumentException($"Should only be a single key returned from query but had {keys.Length}");
}
var keyValue = Encoding.UTF8.GetString(Convert.FromBase64String(keys[0].Value));
var decryptedValue = encryptionCertifcate.GetRSAPrivateKey().Decrypt(Convert.FromBase64String(keyValue), padding);
_aclToken = Encoding.UTF8.GetString(decryptedValue);
}
}
public override byte[] Encrypt(byte[] data, RSAEncryptionPadding padding);
public byte[] Decrypt(byte[] buffer, RSAEncryptionPadding padding)
{
return(Decrypt(buffer, 0, buffer.Length, padding));
}
/// <summary>
/// 使用公钥 RSA 加密。
/// </summary>
/// <param name="plain">明文。</param>
/// <param name="publicKey">公钥（PEM 格式）。</param>
/// <param name="encoding">字符集（默认 <see cref="Encoding.UTF8" />）。</param>
/// <param name="encryptionPadding">对齐方式（默认 <see cref="RSAEncryptionPadding.Pkcs1" />）。</param>
/// <returns>密文的 Base64 编码结果。</returns>
public static string Encrypt(string plain, string publicKey, Encoding encoding, RSAEncryptionPadding encryptionPadding)
{
Guard.CheckArgumentNotNull(encoding, nameof(encoding));
publicKey = FormatPublicOrPrivateKey(publicKey);
byte[] bytes = Encrypt(encoding.GetBytes(plain), Convert.FromBase64String(publicKey), encryptionPadding);
return(Convert.ToBase64String(bytes));
}
protected override byte[] Decrypt(RSA rsa, byte[] data, RSAEncryptionPadding padding) => rsa.Decrypt(data, padding);
public override byte[] Decrypt(byte[] data, RSAEncryptionPadding padding) => DecryptDelegate(data, padding);
protected abstract byte[] Decrypt(RSA rsa, byte[] data, RSAEncryptionPadding padding);
/// <summary>
/// RSA public key encryption
/// </summary>
/// <param name="data">Need to encrypt data</param>
/// <param name="padding">Padding algorithm</param>
/// <returns></returns>
public string EncryptByPrivateKey(string data, RSAEncryptionPadding padding)
{
return(EncryptByPrivateKey(DataEncoding.GetBytes(data), padding));
}
private byte[] Decrypt(byte[] data, RSAEncryptionPadding padding)
{
using RSA rsa = KeyMaterial.ToRSA(true);
return(rsa.Decrypt(data, padding));
}
public override byte[] Encrypt(byte[] data, RSAEncryptionPadding padding)
{
throw new NotImplementedException();
}
CmsRecipient(X509Certificate2 certificate, RSAEncryptionPadding rsaEncryptionPadding !!)
: this(certificate)
protected override async Task OnOpenAsync(CancellationToken token)
{
await base.OnOpenAsync(token).ConfigureAwait(false);
token.ThrowIfCancellationRequested();
this.sendBuffer = new byte[this.LocalSendBufferSize];
this.receiveBuffer = new byte[this.LocalReceiveBufferSize];
if (this.LocalCertificate != null)
{
this.localCertificateBlob = this.LocalCertificate.RawData;
}
this.remoteCertificateBlob = this.RemoteEndpoint.ServerCertificate;
if (this.remoteCertificateBlob != null)
{
this.RemoteCertificate = new X509Certificate2(this.remoteCertificateBlob);
}
if (this.RemoteEndpoint.SecurityMode == MessageSecurityMode.SignAndEncrypt)
{
if (this.LocalCertificate == null)
{
throw new ServiceResultException(StatusCodes.BadSecurityChecksFailed, "LocalCertificate is null.");
}
if (this.RemoteCertificate == null)
{
throw new ServiceResultException(StatusCodes.BadSecurityChecksFailed, "RemoteCertificate is null.");
}
this.LocalPrivateKey = this.LocalCertificate.GetRSAPrivateKey();
this.RemotePublicKey = this.RemoteCertificate.GetRSAPublicKey();
switch (this.RemoteEndpoint.SecurityPolicyUri)
{
case SecurityPolicyUris.Basic128Rsa15:
this.asymEncryptionPadding = RSAEncryptionPadding.Pkcs1;
this.asymSignatureHashAlgorithmName = HashAlgorithmName.SHA1;
this.symSigner = new HMACSHA1();
this.symVerifier = new HMACSHA1();
this.symEncryptionAlgorithm = Aes.Create();
this.symEncryptionAlgorithm.Mode = CipherMode.CBC;
this.symEncryptionAlgorithm.Padding = PaddingMode.None;
this.asymLocalKeySize = this.LocalPrivateKey.KeySize;
this.asymRemoteKeySize = this.RemotePublicKey.KeySize;
this.asymLocalPlainTextBlockSize = Math.Max((this.asymLocalKeySize / 8) - 11, 1);
this.asymRemotePlainTextBlockSize = Math.Max((this.asymRemoteKeySize / 8) - 11, 1);
this.symSignatureSize = 20;
this.symSignatureKeySize = 16;
this.symEncryptionBlockSize = 16;
this.symEncryptionKeySize = 16;
break;
case SecurityPolicyUris.Basic256:
this.asymEncryptionPadding = RSAEncryptionPadding.OaepSHA1;
this.asymSignatureHashAlgorithmName = HashAlgorithmName.SHA1;
this.symSigner = new HMACSHA1();
this.symVerifier = new HMACSHA1();
this.symEncryptionAlgorithm = Aes.Create();
this.symEncryptionAlgorithm.Mode = CipherMode.CBC;
this.symEncryptionAlgorithm.Padding = PaddingMode.None;
this.asymLocalKeySize = this.LocalPrivateKey.KeySize;
this.asymRemoteKeySize = this.RemotePublicKey.KeySize;
this.asymLocalPlainTextBlockSize = Math.Max((this.asymLocalKeySize / 8) - 42, 1);
this.asymRemotePlainTextBlockSize = Math.Max((this.asymRemoteKeySize / 8) - 42, 1);
this.symSignatureSize = 20;
this.symSignatureKeySize = 24;
this.symEncryptionBlockSize = 16;
this.symEncryptionKeySize = 32;
break;
case SecurityPolicyUris.Basic256Sha256:
this.asymEncryptionPadding = RSAEncryptionPadding.OaepSHA1;
this.asymSignatureHashAlgorithmName = HashAlgorithmName.SHA256;
this.symSigner = new HMACSHA256();
this.symVerifier = new HMACSHA256();
this.symEncryptionAlgorithm = Aes.Create();
this.symEncryptionAlgorithm.Mode = CipherMode.CBC;
this.symEncryptionAlgorithm.Padding = PaddingMode.None;
this.asymLocalKeySize = this.LocalPrivateKey.KeySize;
this.asymRemoteKeySize = this.RemotePublicKey.KeySize;
this.asymLocalPlainTextBlockSize = Math.Max((this.asymLocalKeySize / 8) - 42, 1);
this.asymRemotePlainTextBlockSize = Math.Max((this.asymRemoteKeySize / 8) - 42, 1);
this.symSignatureSize = 32;
this.symSignatureKeySize = 32;
this.symEncryptionBlockSize = 16;
this.symEncryptionKeySize = 32;
break;
default:
throw new ServiceResultException(StatusCodes.BadSecurityPolicyRejected);
}
this.asymIsSigned = this.asymIsEncrypted = true;
this.symIsSigned = true;
this.symIsEncrypted = true;
this.asymLocalSignatureSize = this.asymLocalKeySize / 8;
this.asymLocalCipherTextBlockSize = Math.Max(this.asymLocalKeySize / 8, 1);
this.asymRemoteSignatureSize = this.asymRemoteKeySize / 8;
this.asymRemoteCipherTextBlockSize = Math.Max(this.asymRemoteKeySize / 8, 1);
this.clientSigningKey = new byte[this.symSignatureKeySize];
this.clientEncryptingKey = new byte[this.symEncryptionKeySize];
this.clientInitializationVector = new byte[this.symEncryptionBlockSize];
this.serverSigningKey = new byte[this.symSignatureKeySize];
this.serverEncryptingKey = new byte[this.symEncryptionKeySize];
this.serverInitializationVector = new byte[this.symEncryptionBlockSize];
this.encryptionBuffer = new byte[this.LocalSendBufferSize];
}
else if (this.RemoteEndpoint.SecurityMode == MessageSecurityMode.Sign)
{
if (this.LocalCertificate == null)
{
throw new ServiceResultException(StatusCodes.BadSecurityChecksFailed, "LocalCertificate is null.");
}
if (this.RemoteCertificate == null)
{
throw new ServiceResultException(StatusCodes.BadSecurityChecksFailed, "RemoteCertificate is null.");
}
this.LocalPrivateKey = this.LocalCertificate.GetRSAPrivateKey();
this.RemotePublicKey = this.RemoteCertificate.GetRSAPublicKey();
switch (this.RemoteEndpoint.SecurityPolicyUri)
{
case SecurityPolicyUris.Basic128Rsa15:
this.asymEncryptionPadding = RSAEncryptionPadding.Pkcs1;
this.asymSignatureHashAlgorithmName = HashAlgorithmName.SHA1;
this.symSigner = new HMACSHA1();
this.symVerifier = new HMACSHA1();
this.asymLocalKeySize = this.LocalPrivateKey.KeySize;
this.asymRemoteKeySize = this.RemotePublicKey.KeySize;
this.asymLocalPlainTextBlockSize = Math.Max((this.asymLocalKeySize / 8) - 11, 1);
this.asymRemotePlainTextBlockSize = Math.Max((this.asymRemoteKeySize / 8) - 11, 1);
this.symSignatureSize = 20;
this.symSignatureKeySize = 16;
this.symEncryptionBlockSize = 16;
this.symEncryptionKeySize = 16;
break;
case SecurityPolicyUris.Basic256:
this.asymEncryptionPadding = RSAEncryptionPadding.OaepSHA1;
this.asymSignatureHashAlgorithmName = HashAlgorithmName.SHA1;
this.symSigner = new HMACSHA1();
this.symVerifier = new HMACSHA1();
this.asymLocalKeySize = this.LocalPrivateKey.KeySize;
this.asymRemoteKeySize = this.RemotePublicKey.KeySize;
this.asymLocalPlainTextBlockSize = Math.Max((this.asymLocalKeySize / 8) - 42, 1);
this.asymRemotePlainTextBlockSize = Math.Max((this.asymRemoteKeySize / 8) - 42, 1);
this.symSignatureSize = 20;
this.symSignatureKeySize = 24;
this.symEncryptionBlockSize = 16;
this.symEncryptionKeySize = 32;
break;
case SecurityPolicyUris.Basic256Sha256:
this.asymEncryptionPadding = RSAEncryptionPadding.OaepSHA1;
this.asymSignatureHashAlgorithmName = HashAlgorithmName.SHA256;
this.symSigner = new HMACSHA256();
this.symVerifier = new HMACSHA256();
this.asymLocalKeySize = this.LocalPrivateKey.KeySize;
this.asymRemoteKeySize = this.RemotePublicKey.KeySize;
this.asymLocalPlainTextBlockSize = Math.Max((this.asymLocalKeySize / 8) - 42, 1);
this.asymRemotePlainTextBlockSize = Math.Max((this.asymRemoteKeySize / 8) - 42, 1);
this.symSignatureSize = 32;
this.symSignatureKeySize = 32;
this.symEncryptionBlockSize = 16;
this.symEncryptionKeySize = 32;
break;
default:
throw new ServiceResultException(StatusCodes.BadSecurityPolicyRejected);
}
this.asymIsSigned = this.asymIsEncrypted = true;
this.symIsSigned = true;
this.symIsEncrypted = false;
this.asymLocalSignatureSize = this.asymLocalKeySize / 8;
this.asymLocalCipherTextBlockSize = Math.Max(this.asymLocalKeySize / 8, 1);
this.asymRemoteSignatureSize = this.asymRemoteKeySize / 8;
this.asymRemoteCipherTextBlockSize = Math.Max(this.asymRemoteKeySize / 8, 1);
this.clientSigningKey = new byte[this.symSignatureKeySize];
this.clientEncryptingKey = new byte[this.symEncryptionKeySize];
this.clientInitializationVector = new byte[this.symEncryptionBlockSize];
this.serverSigningKey = new byte[this.symSignatureKeySize];
this.serverEncryptingKey = new byte[this.symEncryptionKeySize];
this.serverInitializationVector = new byte[this.symEncryptionBlockSize];
this.encryptionBuffer = new byte[this.LocalSendBufferSize];
}
else if (this.RemoteEndpoint.SecurityMode == MessageSecurityMode.None)
{
this.asymIsSigned = this.asymIsEncrypted = false;
this.symIsSigned = this.symIsEncrypted = false;
this.asymLocalKeySize = 0;
this.asymRemoteKeySize = 0;
this.asymLocalSignatureSize = 0;
this.asymLocalCipherTextBlockSize = 1;
this.asymRemoteSignatureSize = 0;
this.asymRemoteCipherTextBlockSize = 1;
this.asymLocalPlainTextBlockSize = 1;
this.asymRemotePlainTextBlockSize = 1;
this.symSignatureSize = 0;
this.symSignatureKeySize = 0;
this.symEncryptionBlockSize = 1;
this.symEncryptionKeySize = 0;
this.encryptionBuffer = null;
}
else
{
throw new ServiceResultException(StatusCodes.BadSecurityModeRejected);
}
this.sendRequestsTask = Task.Run(() => this.SendRequestsAsync(this.channelCts.Token));
this.receiveResponsesTask = Task.Run(() => this.ReceiveResponsesAsync(this.channelCts.Token));
var openSecureChannelRequest = new OpenSecureChannelRequest
{
ClientProtocolVersion = ProtocolVersion,
RequestType = SecurityTokenRequestType.Issue,
SecurityMode = this.RemoteEndpoint.SecurityMode,
ClientNonce = this.symIsSigned ? this.GetNextNonce() : null,
RequestedLifetime = TokenRequestedLifetime
};
var openSecureChannelResponse = (OpenSecureChannelResponse)await this.RequestAsync(openSecureChannelRequest).ConfigureAwait(false);
if (openSecureChannelResponse.ServerProtocolVersion < ProtocolVersion)
{
throw new ServiceResultException(StatusCodes.BadProtocolVersionUnsupported);
}
await this.sendingSemaphore.WaitAsync(token).ConfigureAwait(false);
try
{
this.ChannelId = openSecureChannelResponse.SecurityToken.ChannelId;
this.TokenId = openSecureChannelResponse.SecurityToken.TokenId;
this.tokenRenewalTime = DateTime.UtcNow.AddMilliseconds(0.75 * openSecureChannelResponse.SecurityToken.RevisedLifetime);
if (this.symIsSigned)
{
var clientNonce = openSecureChannelRequest.ClientNonce;
var serverNonce = openSecureChannelResponse.ServerNonce;
// (re)create client security keys for encrypting the next message sent
var clientSecurityKey = CalculatePSHA(serverNonce, clientNonce, this.symSignatureKeySize + this.symEncryptionKeySize + this.symEncryptionBlockSize, this.asymSignatureHashAlgorithmName);
Buffer.BlockCopy(clientSecurityKey, 0, this.clientSigningKey, 0, this.symSignatureKeySize);
Buffer.BlockCopy(clientSecurityKey, this.symSignatureKeySize, this.clientEncryptingKey, 0, this.symEncryptionKeySize);
Buffer.BlockCopy(clientSecurityKey, this.symSignatureKeySize + this.symEncryptionKeySize, this.clientInitializationVector, 0, this.symEncryptionBlockSize);
// (re)create server security keys for decrypting the next message received that has a new TokenId
var serverSecurityKey = CalculatePSHA(clientNonce, serverNonce, this.symSignatureKeySize + this.symEncryptionKeySize + this.symEncryptionBlockSize, this.asymSignatureHashAlgorithmName);
Buffer.BlockCopy(serverSecurityKey, 0, this.serverSigningKey, 0, this.symSignatureKeySize);
Buffer.BlockCopy(serverSecurityKey, this.symSignatureKeySize, this.serverEncryptingKey, 0, this.symEncryptionKeySize);
Buffer.BlockCopy(serverSecurityKey, this.symSignatureKeySize + this.symEncryptionKeySize, this.serverInitializationVector, 0, this.symEncryptionBlockSize);
}
}
finally
{
this.sendingSemaphore.Release();
}
}
public Task <byte[]> AsymetricDecrypt(string certificateThumbprint, byte[] data, RSAEncryptionPadding padding)
{
if (certificateThumbprint == null)
{
throw new ArgumentNullException(nameof(certificateThumbprint));
}
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
if (!string.Equals(certificateThumbprint, this.p12Certificate.Thumbprint, StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException($"This instance does not contain certificate with thumbprint {certificateThumbprint}.");
}
byte[] decrypted = this.p12Certificate.GetRSAPrivateKey().Decrypt(data, padding);
return(Task.FromResult(decrypted));
}
public virtual byte[] Decrypt(byte[] data, RSAEncryptionPadding padding) { throw DerivedClassMustOverride(); }
public override byte[] Decrypt(byte[] data, RSAEncryptionPadding padding)
{
if (data == null)
throw new ArgumentNullException(nameof(data));
if (padding == null)
throw new ArgumentNullException(nameof(padding));
if (padding == RSAEncryptionPadding.Pkcs1)
{
return Decrypt(data, fOAEP: false);
}
else if (padding == RSAEncryptionPadding.OaepSHA1)
{
return Decrypt(data, fOAEP: true);
}
else
{
throw PaddingModeNotSupported();
}
}
public abstract byte[] Decrypt(byte[] data, RSAEncryptionPadding padding);
/// <summary>
/// 分块解密
/// </summary>
/// <param name="value">已加密的值</param>
/// <param name="key">私钥</param>
/// <param name="encoding">编码</param>
/// <param name="padding">填充方式</param>
/// <returns></returns>
public static string DecryptBlock(string value, string key, Encoding encoding, RSAEncryptionPadding padding)
{
byte[] data = Convert.FromBase64String(value);
var provider = CreateRsaProviderFromPrivateKey(key);
int bufferSize = provider.KeySize / 8;//单块最大长度
var buffer = new byte[bufferSize];
using (MemoryStream inputStream = new MemoryStream(data), outputStream = new MemoryStream())
{
while (true)
{
int readSize = inputStream.Read(buffer, 0, bufferSize);
if (readSize <= 0)
{
break;
}
var temp = new byte[readSize];
Array.Copy(buffer, 0, temp, 0, readSize);
var rawBytes = provider.Decrypt(temp, padding);
outputStream.Write(rawBytes, 0, rawBytes.Length);
}
provider.Dispose();
return(encoding.GetString(outputStream.ToArray()));
}
}
public RsaCryptoProvider(RSA cng, RSAEncryptionPadding padding)
{
_cng = cng;
_padding = padding;
}
/// <summary> /// 将字符串进行RSA加密，返回加密后的Base64字符串，默认为【Xml格式】的密钥，默认【不分块】 /// </summary> /// <param name="data">要加密的字符串</param> /// <param name="key">公钥或私钥字符串</param> /// <param name="padding">填充方式枚举值</param> /// <param name="isXmlKey">是否为【Xml格式】私钥</param> /// <param name="autoBlock">是否自动分块</param> /// <returns>【Base64字符串】</returns> public string Encrypt(string data, string key, RSAEncryptionPadding padding, bool isXmlKey = true, bool autoBlock = false) => Encrypt(data.ToBytes(), key, padding, isXmlKey, autoBlock);
public override byte[] Encrypt(byte[] data, RSAEncryptionPadding padding)
{
if (data == null)
throw new ArgumentNullException("data");
if (padding == null)
throw new ArgumentNullException("padding");
Interop.Crypto.RsaPadding rsaPadding = GetInteropPadding(padding);
SafeRsaHandle key = _key.Value;
CheckInvalidKey(key);
byte[] buf = new byte[Interop.Crypto.RsaSize(key)];
int returnValue = Interop.Crypto.RsaPublicEncrypt(
data.Length,
data,
buf,
key,
rsaPadding);
CheckReturn(returnValue);
return buf;
}
/// <summary> /// 将字节数组进行RSA解密，返回解密后的字符串，默认为【Xml格式】的私钥，默认【不分块】 /// </summary> /// <param name="data">要解密的字节数组</param> /// <param name="privateKey">私钥字符串</param> /// <param name="padding">填充方式枚举值</param> /// <param name="isXmlKey">是否为【Xml格式】私钥</param> /// <param name="autoBlock">是否自动分块</param> /// <returns></returns> public string Decrypt(byte[] data, string privateKey, RSAEncryptionPadding padding, bool isXmlKey = true, bool autoBlock = false) => DecryptBytes(data, privateKey, padding, isXmlKey, autoBlock)?.BytesToString();
public static bool TryGetRsaOaepEncryptionPadding(
ReadOnlyMemory <byte>?parameters,
out RSAEncryptionPadding rsaEncryptionPadding,
out Exception exception)
{
exception = null;
rsaEncryptionPadding = null;
if (parameters == null || parameters.Value.IsEmpty)
{
exception = new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
return(false);
}
try
{
OaepParamsAsn oaepParameters = OaepParamsAsn.Decode(parameters.Value, AsnEncodingRules.DER);
if (oaepParameters.MaskGenFunc.Algorithm.Value != Oids.Mgf1 ||
oaepParameters.MaskGenFunc.Parameters == null ||
oaepParameters.PSourceFunc.Algorithm.Value != Oids.PSpecified
)
{
exception = new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
return(false);
}
AlgorithmIdentifierAsn mgf1AlgorithmIdentifier = AlgorithmIdentifierAsn.Decode(oaepParameters.MaskGenFunc.Parameters.Value, AsnEncodingRules.DER);
if (mgf1AlgorithmIdentifier.Algorithm.Value != oaepParameters.HashFunc.Algorithm.Value)
{
exception = new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
return(false);
}
if (oaepParameters.PSourceFunc.Parameters != null &&
!oaepParameters.PSourceFunc.Parameters.Value.Span.SequenceEqual(s_pSpecifiedDefaultParameters))
{
exception = new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
return(false);
}
switch (oaepParameters.HashFunc.Algorithm.Value)
{
case Oids.Sha1:
rsaEncryptionPadding = RSAEncryptionPadding.OaepSHA1;
return(true);
case Oids.Sha256:
rsaEncryptionPadding = RSAEncryptionPadding.OaepSHA256;
return(true);
case Oids.Sha384:
rsaEncryptionPadding = RSAEncryptionPadding.OaepSHA384;
return(true);
case Oids.Sha512:
rsaEncryptionPadding = RSAEncryptionPadding.OaepSHA512;
return(true);
default:
exception = new CryptographicException(
SR.Cryptography_Cms_UnknownAlgorithm,
oaepParameters.HashFunc.Algorithm.Value);
return(false);
}
}
catch (CryptographicException e)
{
exception = e;
return(false);
}
}
/// <summary>
/// RSA解密
/// </summary>
/// <param name="keyType"></param>
/// <param name="privateKey"></param>
/// <param name="data"></param>
/// <param name="padding"></param>
/// <param name="encoding"></param>
/// <returns></returns>
public static string Decrypt(RsaKeyType keyType, string privateKey, string data, RSAEncryptionPadding padding, Encoding encoding = null)
{
return(Rsa.Decrypt(keyType, privateKey, data, padding, encoding));
}
/// <summary> /// 将字节数组进行RSA加密，返回加密后的Base64字符串，默认为【Xml格式】的密钥，默认【不分块】 /// </summary> /// <param name="data">要加密的字节数组</param> /// <param name="key">公钥或私钥字符串</param> /// <param name="padding">填充方式枚举值</param> /// <param name="isXmlKey">是否为【Xml格式】私钥</param> /// <param name="autoBlock">是否自动分块</param> /// <returns>【Base64字符串】</returns> public string Encrypt(byte[] data, string key, RSAEncryptionPadding padding, bool isXmlKey = true, bool autoBlock = false) => EncryptBytes(data, key, padding, isXmlKey, autoBlock)?.ToBase64();
/// <summary>
/// 分块加密
/// </summary>
/// <param name="value">待加密的值</param>
/// <param name="key">公钥</param>
/// <param name="encoding">编码</param>
/// <param name="padding">填充方式</param>
/// <returns></returns>
public static string EncryptBlock(string value, string key, Encoding encoding, RSAEncryptionPadding padding)
{
byte[] data = encoding.GetBytes(value);
var provider = CreateRsaProviderFromPublicKey(key);
int bufferSize = (provider.KeySize / 8) - 11;//单块最大长度
var buffer = new byte[bufferSize];
using (MemoryStream inputStream = new MemoryStream(data), outStream = new MemoryStream())
{
while (true)
{
// 分段加密
int readSize = inputStream.Read(buffer, 0, bufferSize);
if (readSize <= 0)
{
break;
}
var temp = new byte[readSize];
Array.Copy(buffer, 0, temp, 0, readSize);
RSACryptoServiceProvider a = new RSACryptoServiceProvider();
var encryptedBytes = provider.Encrypt(temp, padding);
outStream.Write(encryptedBytes, 0, encryptedBytes.Length);
}
provider.Dispose();
return(Convert.ToBase64String(outStream.ToArray()));
}
}
