internal static RSAParameters ExportRsaParameters(SafeRsaHandle key, bool includePrivateParameters)
{
Debug.Assert(
key != null && !key.IsInvalid,
"Callers should check the key is invalid and throw an exception with a message");
if (key == null || key.IsInvalid)
{
throw new CryptographicException();
}
bool addedRef = false;
try
{
key.DangerousAddRef(ref addedRef);
IntPtr n, e, d, p, dmp1, q, dmq1, iqmp;
if (!GetRsaParameters(key, out n, out e, out d, out p, out dmp1, out q, out dmq1, out iqmp))
{
throw new CryptographicException();
}
int modulusSize = Crypto.RsaSize(key);
// RSACryptoServiceProvider expects P, DP, Q, DQ, and InverseQ to all
// be padded up to half the modulus size.
int halfModulus = modulusSize / 2;
RSAParameters rsaParameters = new RSAParameters
{
Modulus = Crypto.ExtractBignum(n, modulusSize) !,
Exponent = Crypto.ExtractBignum(e, 0) !,
};
if (includePrivateParameters)
{
rsaParameters.D = Crypto.ExtractBignum(d, modulusSize);
rsaParameters.P = Crypto.ExtractBignum(p, halfModulus);
rsaParameters.DP = Crypto.ExtractBignum(dmp1, halfModulus);
rsaParameters.Q = Crypto.ExtractBignum(q, halfModulus);
rsaParameters.DQ = Crypto.ExtractBignum(dmq1, halfModulus);
rsaParameters.InverseQ = Crypto.ExtractBignum(iqmp, halfModulus);
}
return(rsaParameters);
}
finally
{
if (addedRef)
{
key.DangerousRelease();
}
}
}
internal static unsafe RSAParameters ExportRsaParameters(SafeRsaHandle key, bool includePrivateParameters)
{
Debug.Assert(
key != null && !key.IsInvalid,
"Callers should check the key is invalid and throw an exception with a message");
if (key == null || key.IsInvalid)
{
throw new CryptographicException();
}
RSAParameters rsaParameters;
bool addedRef = false;
try
{
key.DangerousAddRef(ref addedRef);
RSA_ST *rsaStructure = (RSA_ST *)key.DangerousGetHandle();
int modulusSize = RSA_size(key);
// RSACryptoServiceProvider expects P, DP, Q, DQ, and InverseQ to all
// be padded up to half the modulus size.
int halfModulus = modulusSize / 2;
rsaParameters = new RSAParameters
{
Modulus = Crypto.ExtractBignum(rsaStructure->n, modulusSize),
Exponent = Crypto.ExtractBignum(rsaStructure->e, 0),
};
if (includePrivateParameters)
{
rsaParameters.D = Crypto.ExtractBignum(rsaStructure->d, modulusSize);
rsaParameters.P = Crypto.ExtractBignum(rsaStructure->p, halfModulus);
rsaParameters.DP = Crypto.ExtractBignum(rsaStructure->dmp1, halfModulus);
rsaParameters.Q = Crypto.ExtractBignum(rsaStructure->q, halfModulus);
rsaParameters.DQ = Crypto.ExtractBignum(rsaStructure->dmq1, halfModulus);
rsaParameters.InverseQ = Crypto.ExtractBignum(rsaStructure->iqmp, halfModulus);
}
}
finally
{
if (addedRef)
{
key.DangerousRelease();
}
}
return(rsaParameters);
}
