public static unsafe extern bool CryptImportPublicKeyInfoEx2(CertEncodingType dwCertEncodingType, CERT_PUBLIC_KEY_INFO* pInfo, int dwFlags, void* pvAuxInfo, out SafeBCryptKeyHandle phKey);
public byte[] ComputeCapiSha1OfPublicKey(PublicKey key)
{
unsafe
{
fixed (byte* pszOidValue = key.Oid.ValueAsAscii())
{
byte[] encodedParameters = key.EncodedParameters.RawData;
fixed (byte* pEncodedParameters = encodedParameters)
{
byte[] encodedKeyValue = key.EncodedKeyValue.RawData;
fixed (byte* pEncodedKeyValue = encodedKeyValue)
{
CERT_PUBLIC_KEY_INFO publicKeyInfo = new CERT_PUBLIC_KEY_INFO()
{
Algorithm = new CRYPT_ALGORITHM_IDENTIFIER()
{
pszObjId = new IntPtr(pszOidValue),
Parameters = new CRYPTOAPI_BLOB(encodedParameters.Length, pEncodedParameters),
},
PublicKey = new CRYPT_BIT_BLOB()
{
cbData = encodedKeyValue.Length,
pbData = pEncodedKeyValue,
cUnusedBits = 0,
},
};
int cb = 20;
byte[] buffer = new byte[cb];
if (!Interop.crypt32.CryptHashPublicKeyInfo(IntPtr.Zero, AlgId.CALG_SHA1, 0, CertEncodingType.All, ref publicKeyInfo, buffer, ref cb))
throw Marshal.GetHRForLastWin32Error().ToCryptographicException();;
if (cb < buffer.Length)
{
byte[] newBuffer = new byte[cb];
Array.Copy(buffer, 0, newBuffer, 0, cb);
buffer = newBuffer;
}
return buffer;
}
}
}
}
}
public static extern bool CryptHashPublicKeyInfo(IntPtr hCryptProv, int algId, int dwFlags, CertEncodingType dwCertEncodingType, [In] ref CERT_PUBLIC_KEY_INFO pInfo, [Out] byte[] pbComputedHash, [In, Out] ref int pcbComputedHash);
