public static DSA FromCapiPublicKeyBlobDSA(byte[] blob)
{
return(CryptoConvert.FromCapiPublicKeyBlobDSA(blob, 0));
}
public static byte[] ToCapiPrivateKeyBlob(RSA rsa)
{
RSAParameters rsaparameters = rsa.ExportParameters(true);
int num = rsaparameters.Modulus.Length;
byte[] array = new byte[20 + (num << 2) + (num >> 1)];
array[0] = 7;
array[1] = 2;
array[5] = 36;
array[8] = 82;
array[9] = 83;
array[10] = 65;
array[11] = 50;
byte[] bytesLE = CryptoConvert.GetBytesLE(num << 3);
array[12] = bytesLE[0];
array[13] = bytesLE[1];
array[14] = bytesLE[2];
array[15] = bytesLE[3];
int num2 = 16;
int i = rsaparameters.Exponent.Length;
while (i > 0)
{
array[num2++] = rsaparameters.Exponent[--i];
}
num2 = 20;
byte[] array2 = rsaparameters.Modulus;
int num3 = array2.Length;
Array.Reverse(array2, 0, num3);
Buffer.BlockCopy(array2, 0, array, num2, num3);
num2 += num3;
array2 = rsaparameters.P;
num3 = array2.Length;
Array.Reverse(array2, 0, num3);
Buffer.BlockCopy(array2, 0, array, num2, num3);
num2 += num3;
array2 = rsaparameters.Q;
num3 = array2.Length;
Array.Reverse(array2, 0, num3);
Buffer.BlockCopy(array2, 0, array, num2, num3);
num2 += num3;
array2 = rsaparameters.DP;
num3 = array2.Length;
Array.Reverse(array2, 0, num3);
Buffer.BlockCopy(array2, 0, array, num2, num3);
num2 += num3;
array2 = rsaparameters.DQ;
num3 = array2.Length;
Array.Reverse(array2, 0, num3);
Buffer.BlockCopy(array2, 0, array, num2, num3);
num2 += num3;
array2 = rsaparameters.InverseQ;
num3 = array2.Length;
Array.Reverse(array2, 0, num3);
Buffer.BlockCopy(array2, 0, array, num2, num3);
num2 += num3;
array2 = rsaparameters.D;
num3 = array2.Length;
Array.Reverse(array2, 0, num3);
Buffer.BlockCopy(array2, 0, array, num2, num3);
return(array);
}
public static RSA FromCapiPublicKeyBlob(byte[] blob, int offset)
{
if (blob == null)
{
throw new ArgumentNullException("blob");
}
if (offset >= blob.Length)
{
throw new ArgumentException("blob is too small.");
}
RSA result;
try
{
if (blob[offset] != 6 || blob[offset + 1] != 2 || blob[offset + 2] != 0 || blob[offset + 3] != 0 || CryptoConvert.ToUInt32LE(blob, offset + 8) != 826364754u)
{
throw new CryptographicException("Invalid blob header");
}
int num = CryptoConvert.ToInt32LE(blob, offset + 12);
RSAParameters parameters = default(RSAParameters);
parameters.Exponent = new byte[3];
parameters.Exponent[0] = blob[offset + 18];
parameters.Exponent[1] = blob[offset + 17];
parameters.Exponent[2] = blob[offset + 16];
int srcOffset = offset + 20;
int num2 = num >> 3;
parameters.Modulus = new byte[num2];
Buffer.BlockCopy(blob, srcOffset, parameters.Modulus, 0, num2);
Array.Reverse(parameters.Modulus);
RSA rsa = RSA.Create();
rsa.ImportParameters(parameters);
result = rsa;
}
catch (Exception inner)
{
throw new CryptographicException("Invalid blob.", inner);
}
return(result);
}
public static RSA FromCapiPrivateKeyBlob(byte[] blob, int offset)
{
if (blob == null)
{
throw new ArgumentNullException(nameof(blob));
}
if (offset >= blob.Length)
{
throw new ArgumentException("blob is too small.");
}
RSAParameters parameters = new RSAParameters();
try
{
if (blob[offset] != (byte)7 || blob[offset + 1] != (byte)2 || (blob[offset + 2] != (byte)0 || blob[offset + 3] != (byte)0) || CryptoConvert.ToUInt32LE(blob, offset + 8) != 843141970U)
{
throw new CryptographicException("Invalid blob header");
}
int int32Le = CryptoConvert.ToInt32LE(blob, offset + 12);
byte[] array = new byte[4];
Buffer.BlockCopy((Array)blob, offset + 16, (Array)array, 0, 4);
Array.Reverse((Array)array);
parameters.Exponent = CryptoConvert.Trim(array);
int srcOffset1 = offset + 20;
int count1 = int32Le >> 3;
parameters.Modulus = new byte[count1];
Buffer.BlockCopy((Array)blob, srcOffset1, (Array)parameters.Modulus, 0, count1);
Array.Reverse((Array)parameters.Modulus);
int srcOffset2 = srcOffset1 + count1;
int count2 = count1 >> 1;
parameters.P = new byte[count2];
Buffer.BlockCopy((Array)blob, srcOffset2, (Array)parameters.P, 0, count2);
Array.Reverse((Array)parameters.P);
int srcOffset3 = srcOffset2 + count2;
parameters.Q = new byte[count2];
Buffer.BlockCopy((Array)blob, srcOffset3, (Array)parameters.Q, 0, count2);
Array.Reverse((Array)parameters.Q);
int srcOffset4 = srcOffset3 + count2;
parameters.DP = new byte[count2];
Buffer.BlockCopy((Array)blob, srcOffset4, (Array)parameters.DP, 0, count2);
Array.Reverse((Array)parameters.DP);
int srcOffset5 = srcOffset4 + count2;
parameters.DQ = new byte[count2];
Buffer.BlockCopy((Array)blob, srcOffset5, (Array)parameters.DQ, 0, count2);
Array.Reverse((Array)parameters.DQ);
int srcOffset6 = srcOffset5 + count2;
parameters.InverseQ = new byte[count2];
Buffer.BlockCopy((Array)blob, srcOffset6, (Array)parameters.InverseQ, 0, count2);
Array.Reverse((Array)parameters.InverseQ);
int srcOffset7 = srcOffset6 + count2;
parameters.D = new byte[count1];
if (srcOffset7 + count1 + offset <= blob.Length)
{
Buffer.BlockCopy((Array)blob, srcOffset7, (Array)parameters.D, 0, count1);
Array.Reverse((Array)parameters.D);
}
}
catch (Exception ex)
{
throw new CryptographicException("Invalid blob.", ex);
}
RSA rsa;
try
{
rsa = RSA.Create();
rsa.ImportParameters(parameters);
}
catch (CryptographicException ex)
{
try
{
rsa = (RSA) new RSACryptoServiceProvider(new CspParameters()
{
Flags = CspProviderFlags.UseMachineKeyStore
});
rsa.ImportParameters(parameters);
}
catch
{
throw ex;
}
}
return(rsa);
}
public static DSA FromCapiPrivateKeyBlobDSA(byte[] blob, int offset)
{
if (blob == null)
{
throw new ArgumentNullException("blob");
}
if (offset >= blob.Length)
{
throw new ArgumentException("blob is too small.");
}
DSAParameters parameters = default(DSAParameters);
try
{
if (blob[offset] != 7 || blob[offset + 1] != 2 || blob[offset + 2] != 0 || blob[offset + 3] != 0 || CryptoConvert.ToUInt32LE(blob, offset + 8) != 844321604u)
{
throw new CryptographicException("Invalid blob header");
}
int num = CryptoConvert.ToInt32LE(blob, offset + 12);
int num2 = num >> 3;
int num3 = offset + 16;
parameters.P = new byte[num2];
Buffer.BlockCopy(blob, num3, parameters.P, 0, num2);
Array.Reverse(parameters.P);
num3 += num2;
parameters.Q = new byte[20];
Buffer.BlockCopy(blob, num3, parameters.Q, 0, 20);
Array.Reverse(parameters.Q);
num3 += 20;
parameters.G = new byte[num2];
Buffer.BlockCopy(blob, num3, parameters.G, 0, num2);
Array.Reverse(parameters.G);
num3 += num2;
parameters.X = new byte[20];
Buffer.BlockCopy(blob, num3, parameters.X, 0, 20);
Array.Reverse(parameters.X);
num3 += 20;
parameters.Counter = CryptoConvert.ToInt32LE(blob, num3);
num3 += 4;
parameters.Seed = new byte[20];
Buffer.BlockCopy(blob, num3, parameters.Seed, 0, 20);
Array.Reverse(parameters.Seed);
num3 += 20;
}
catch (Exception inner)
{
throw new CryptographicException("Invalid blob.", inner);
}
DSA dsa = DSA.Create();
dsa.ImportParameters(parameters);
return(dsa);
}
public static DSA FromCapiPublicKeyBlobDSA(byte[] blob, int offset)
{
if (blob == null)
{
throw new ArgumentNullException(nameof(blob));
}
if (offset >= blob.Length)
{
throw new ArgumentException("blob is too small.");
}
try
{
if (blob[offset] != (byte)6 || blob[offset + 1] != (byte)2 || (blob[offset + 2] != (byte)0 || blob[offset + 3] != (byte)0) || CryptoConvert.ToUInt32LE(blob, offset + 8) != 827544388U)
{
throw new CryptographicException("Invalid blob header");
}
int int32Le = CryptoConvert.ToInt32LE(blob, offset + 12);
DSAParameters parameters = new DSAParameters();
int count = int32Le >> 3;
int srcOffset1 = offset + 16;
parameters.P = new byte[count];
Buffer.BlockCopy((Array)blob, srcOffset1, (Array)parameters.P, 0, count);
Array.Reverse((Array)parameters.P);
int srcOffset2 = srcOffset1 + count;
parameters.Q = new byte[20];
Buffer.BlockCopy((Array)blob, srcOffset2, (Array)parameters.Q, 0, 20);
Array.Reverse((Array)parameters.Q);
int srcOffset3 = srcOffset2 + 20;
parameters.G = new byte[count];
Buffer.BlockCopy((Array)blob, srcOffset3, (Array)parameters.G, 0, count);
Array.Reverse((Array)parameters.G);
int srcOffset4 = srcOffset3 + count;
parameters.Y = new byte[count];
Buffer.BlockCopy((Array)blob, srcOffset4, (Array)parameters.Y, 0, count);
Array.Reverse((Array)parameters.Y);
int offset1 = srcOffset4 + count;
parameters.Counter = CryptoConvert.ToInt32LE(blob, offset1);
int srcOffset5 = offset1 + 4;
parameters.Seed = new byte[20];
Buffer.BlockCopy((Array)blob, srcOffset5, (Array)parameters.Seed, 0, 20);
Array.Reverse((Array)parameters.Seed);
int num = srcOffset5 + 20;
DSA dsa = DSA.Create();
dsa.ImportParameters(parameters);
return(dsa);
}
catch (Exception ex)
{
throw new CryptographicException("Invalid blob.", ex);
}
}
public static RSA FromCapiKeyBlob(byte[] blob)
{
return(CryptoConvert.FromCapiKeyBlob(blob, 0));
}
public static RSA FromCapiPublicKeyBlob(byte[] blob, int offset)
{
if (blob == null)
{
throw new ArgumentNullException(nameof(blob));
}
if (offset >= blob.Length)
{
throw new ArgumentException("blob is too small.");
}
try
{
if (blob[offset] != (byte)6 || blob[offset + 1] != (byte)2 || (blob[offset + 2] != (byte)0 || blob[offset + 3] != (byte)0) || CryptoConvert.ToUInt32LE(blob, offset + 8) != 826364754U)
{
throw new CryptographicException("Invalid blob header");
}
int int32Le = CryptoConvert.ToInt32LE(blob, offset + 12);
RSAParameters parameters = new RSAParameters();
parameters.Exponent = new byte[3];
parameters.Exponent[0] = blob[offset + 18];
parameters.Exponent[1] = blob[offset + 17];
parameters.Exponent[2] = blob[offset + 16];
int srcOffset = offset + 20;
int count = int32Le >> 3;
parameters.Modulus = new byte[count];
Buffer.BlockCopy((Array)blob, srcOffset, (Array)parameters.Modulus, 0, count);
Array.Reverse((Array)parameters.Modulus);
RSA rsa;
try
{
rsa = RSA.Create();
rsa.ImportParameters(parameters);
}
catch (CryptographicException)
{
rsa = (RSA) new RSACryptoServiceProvider(new CspParameters()
{
Flags = CspProviderFlags.UseMachineKeyStore
});
rsa.ImportParameters(parameters);
}
return(rsa);
}
catch (Exception ex)
{
throw new CryptographicException("Invalid blob.", ex);
}
}
public static byte[] ToCapiPrivateKeyBlob(RSA rsa)
{
RSAParameters rsaParameters = rsa.ExportParameters(true);
int length1 = rsaParameters.Modulus.Length;
byte[] numArray = new byte[20 + (length1 << 2) + (length1 >> 1)];
numArray[0] = (byte)7;
numArray[1] = (byte)2;
numArray[5] = (byte)36;
numArray[8] = (byte)82;
numArray[9] = (byte)83;
numArray[10] = (byte)65;
numArray[11] = (byte)50;
byte[] bytesLe = CryptoConvert.GetBytesLE(length1 << 3);
numArray[12] = bytesLe[0];
numArray[13] = bytesLe[1];
numArray[14] = bytesLe[2];
numArray[15] = bytesLe[3];
int num = 16;
int length2 = rsaParameters.Exponent.Length;
while (length2 > 0)
{
numArray[num++] = rsaParameters.Exponent[--length2];
}
int dstOffset1 = 20;
byte[] modulus = rsaParameters.Modulus;
int length3 = modulus.Length;
Array.Reverse((Array)modulus, 0, length3);
Buffer.BlockCopy((Array)modulus, 0, (Array)numArray, dstOffset1, length3);
int dstOffset2 = dstOffset1 + length3;
byte[] p = rsaParameters.P;
int length4 = p.Length;
Array.Reverse((Array)p, 0, length4);
Buffer.BlockCopy((Array)p, 0, (Array)numArray, dstOffset2, length4);
int dstOffset3 = dstOffset2 + length4;
byte[] q = rsaParameters.Q;
int length5 = q.Length;
Array.Reverse((Array)q, 0, length5);
Buffer.BlockCopy((Array)q, 0, (Array)numArray, dstOffset3, length5);
int dstOffset4 = dstOffset3 + length5;
byte[] dp = rsaParameters.DP;
int length6 = dp.Length;
Array.Reverse((Array)dp, 0, length6);
Buffer.BlockCopy((Array)dp, 0, (Array)numArray, dstOffset4, length6);
int dstOffset5 = dstOffset4 + length6;
byte[] dq = rsaParameters.DQ;
int length7 = dq.Length;
Array.Reverse((Array)dq, 0, length7);
Buffer.BlockCopy((Array)dq, 0, (Array)numArray, dstOffset5, length7);
int dstOffset6 = dstOffset5 + length7;
byte[] inverseQ = rsaParameters.InverseQ;
int length8 = inverseQ.Length;
Array.Reverse((Array)inverseQ, 0, length8);
Buffer.BlockCopy((Array)inverseQ, 0, (Array)numArray, dstOffset6, length8);
int dstOffset7 = dstOffset6 + length8;
byte[] d = rsaParameters.D;
int length9 = d.Length;
Array.Reverse((Array)d, 0, length9);
Buffer.BlockCopy((Array)d, 0, (Array)numArray, dstOffset7, length9);
return(numArray);
}
public static DSA FromCapiPrivateKeyBlobDSA(byte[] blob, int offset)
{
if (blob == null)
{
throw new ArgumentNullException(nameof(blob));
}
if (offset >= blob.Length)
{
throw new ArgumentException("blob is too small.");
}
DSAParameters parameters = new DSAParameters();
try
{
if (blob[offset] != (byte)7 || blob[offset + 1] != (byte)2 || (blob[offset + 2] != (byte)0 || blob[offset + 3] != (byte)0) || CryptoConvert.ToUInt32LE(blob, offset + 8) != 844321604U)
{
throw new CryptographicException("Invalid blob header");
}
int count = CryptoConvert.ToInt32LE(blob, offset + 12) >> 3;
int srcOffset1 = offset + 16;
parameters.P = new byte[count];
Buffer.BlockCopy((Array)blob, srcOffset1, (Array)parameters.P, 0, count);
Array.Reverse((Array)parameters.P);
int srcOffset2 = srcOffset1 + count;
parameters.Q = new byte[20];
Buffer.BlockCopy((Array)blob, srcOffset2, (Array)parameters.Q, 0, 20);
Array.Reverse((Array)parameters.Q);
int srcOffset3 = srcOffset2 + 20;
parameters.G = new byte[count];
Buffer.BlockCopy((Array)blob, srcOffset3, (Array)parameters.G, 0, count);
Array.Reverse((Array)parameters.G);
int srcOffset4 = srcOffset3 + count;
parameters.X = new byte[20];
Buffer.BlockCopy((Array)blob, srcOffset4, (Array)parameters.X, 0, 20);
Array.Reverse((Array)parameters.X);
int offset1 = srcOffset4 + 20;
parameters.Counter = CryptoConvert.ToInt32LE(blob, offset1);
int srcOffset5 = offset1 + 4;
parameters.Seed = new byte[20];
Buffer.BlockCopy((Array)blob, srcOffset5, (Array)parameters.Seed, 0, 20);
Array.Reverse((Array)parameters.Seed);
int num = srcOffset5 + 20;
}
catch (Exception ex)
{
throw new CryptographicException("Invalid blob.", ex);
}
DSA dsa;
try
{
dsa = DSA.Create();
dsa.ImportParameters(parameters);
}
catch (CryptographicException ex)
{
try
{
dsa = (DSA) new DSACryptoServiceProvider(new CspParameters()
{
Flags = CspProviderFlags.UseMachineKeyStore
});
dsa.ImportParameters(parameters);
}
catch
{
throw ex;
}
}
return(dsa);
}
private static RSA FromCapiPrivateKeyBlob(byte[] blob, int offset)
{
RSAParameters rSAParameter = new RSAParameters();
try
{
if (blob[offset] != 7 || blob[offset + 1] != 2 || blob[offset + 2] != 0 || blob[offset + 3] != 0 || CryptoConvert.ToUInt32LE(blob, offset + 8) != 843141970)
{
throw new CryptographicException("Invalid blob header");
}
int int32LE = CryptoConvert.ToInt32LE(blob, offset + 12);
byte[] numArray = new byte[4];
Buffer.BlockCopy(blob, offset + 16, numArray, 0, 4);
Array.Reverse(numArray);
rSAParameter.Exponent = CryptoConvert.Trim(numArray);
int num = offset + 20;
int num1 = int32LE >> 3;
rSAParameter.Modulus = new byte[num1];
Buffer.BlockCopy(blob, num, rSAParameter.Modulus, 0, num1);
Array.Reverse(rSAParameter.Modulus);
num += num1;
int num2 = num1 >> 1;
rSAParameter.P = new byte[num2];
Buffer.BlockCopy(blob, num, rSAParameter.P, 0, num2);
Array.Reverse(rSAParameter.P);
num += num2;
rSAParameter.Q = new byte[num2];
Buffer.BlockCopy(blob, num, rSAParameter.Q, 0, num2);
Array.Reverse(rSAParameter.Q);
num += num2;
rSAParameter.DP = new byte[num2];
Buffer.BlockCopy(blob, num, rSAParameter.DP, 0, num2);
Array.Reverse(rSAParameter.DP);
num += num2;
rSAParameter.DQ = new byte[num2];
Buffer.BlockCopy(blob, num, rSAParameter.DQ, 0, num2);
Array.Reverse(rSAParameter.DQ);
num += num2;
rSAParameter.InverseQ = new byte[num2];
Buffer.BlockCopy(blob, num, rSAParameter.InverseQ, 0, num2);
Array.Reverse(rSAParameter.InverseQ);
num += num2;
rSAParameter.D = new byte[num1];
if (num + num1 + offset <= (int)blob.Length)
{
Buffer.BlockCopy(blob, num, rSAParameter.D, 0, num1);
Array.Reverse(rSAParameter.D);
}
}
catch (Exception exception)
{
throw new CryptographicException("Invalid blob.", exception);
}
RSA rSACryptoServiceProvider = null;
try
{
rSACryptoServiceProvider = RSA.Create();
rSACryptoServiceProvider.ImportParameters(rSAParameter);
}
catch (CryptographicException cryptographicException)
{
bool flag = false;
try
{
rSACryptoServiceProvider = new RSACryptoServiceProvider(new CspParameters()
{
Flags = CspProviderFlags.UseMachineKeyStore
});
rSACryptoServiceProvider.ImportParameters(rSAParameter);
}
catch
{
flag = true;
}
if (flag)
{
throw;
}
}
return(rSACryptoServiceProvider);
}
private static RSA FromCapiPublicKeyBlob(byte[] blob, int offset)
{
RSA rSA;
try
{
if (blob[offset] != 6 || blob[offset + 1] != 2 || blob[offset + 2] != 0 || blob[offset + 3] != 0 || CryptoConvert.ToUInt32LE(blob, offset + 8) != 826364754)
{
throw new CryptographicException("Invalid blob header");
}
int int32LE = CryptoConvert.ToInt32LE(blob, offset + 12);
RSAParameters rSAParameter = new RSAParameters()
{
Exponent = new byte[] { blob[offset + 18], blob[offset + 17], blob[offset + 16] }
};
int num = offset + 20;
int num1 = int32LE >> 3;
rSAParameter.Modulus = new byte[num1];
Buffer.BlockCopy(blob, num, rSAParameter.Modulus, 0, num1);
Array.Reverse(rSAParameter.Modulus);
RSA rSACryptoServiceProvider = null;
try
{
rSACryptoServiceProvider = RSA.Create();
rSACryptoServiceProvider.ImportParameters(rSAParameter);
}
catch (CryptographicException cryptographicException)
{
rSACryptoServiceProvider = new RSACryptoServiceProvider(new CspParameters()
{
Flags = CspProviderFlags.UseMachineKeyStore
});
rSACryptoServiceProvider.ImportParameters(rSAParameter);
}
rSA = rSACryptoServiceProvider;
}
catch (Exception exception)
{
throw new CryptographicException("Invalid blob.", exception);
}
return(rSA);
}