/// <summary>
/// Create an authority key info X509 extension
/// </summary>
/// <param name="serialNumber">Serial number of the info</param>
/// <param name="issuer">Issuer subject name</param>
/// <param name="key">RSA key</param>
/// <returns>The constructed X509 extension</returns>
private X509Extension CreateAuthorityKeyInfo(byte[] serialNumber, X500DistinguishedName issuer, RSACryptoServiceProvider key)
{
CryptoApiMethods.CERT_AUTHORITY_KEY_ID_INFO keyInfo = new CryptoApiMethods.CERT_AUTHORITY_KEY_ID_INFO();
X509Extension ret = null;
try
{
keyInfo.CertSerialNumber = new CryptoApiMethods.CRYPTOAPI_BLOB(serialNumber);
keyInfo.CertIssuer = new CryptoApiMethods.CRYPTOAPI_BLOB(issuer.RawData);
keyInfo.KeyId = new CryptoApiMethods.CRYPTOAPI_BLOB(HashPublicKeyInfo(key));
ret = EncodeExtension(CryptoApiMethods.szOID_AUTHORITY_KEY_IDENTIFIER, keyInfo, false);
}
finally
{
if (keyInfo.CertSerialNumber != null)
{
keyInfo.CertSerialNumber.Release();
}
if (keyInfo.CertIssuer != null)
{
keyInfo.CertIssuer.Release();
}
if (keyInfo.KeyId != null)
{
keyInfo.KeyId.Release();
}
}
return(ret);
}
/// <summary>
/// Create an authority key info X509 extension
/// </summary>
/// <param name="serialNumber">Serial number of the info</param>
/// <param name="issuer">Issuer subject name</param>
/// <param name="key">RSA key</param>
/// <returns>The constructed X509 extension</returns>
private X509Extension CreateAuthorityKeyInfo(byte[] serialNumber, X500DistinguishedName issuer, RSACryptoServiceProvider key)
{
CryptoApiMethods.CERT_AUTHORITY_KEY_ID_INFO keyInfo = new CryptoApiMethods.CERT_AUTHORITY_KEY_ID_INFO();
X509Extension ret = null;
try
{
keyInfo.CertSerialNumber = new CryptoApiMethods.CRYPTOAPI_BLOB(serialNumber);
keyInfo.CertIssuer = new CryptoApiMethods.CRYPTOAPI_BLOB(issuer.RawData);
keyInfo.KeyId = new CryptoApiMethods.CRYPTOAPI_BLOB(HashPublicKeyInfo(key));
ret = EncodeExtension(CryptoApiMethods.szOID_AUTHORITY_KEY_IDENTIFIER, keyInfo, false);
}
finally
{
if (keyInfo.CertSerialNumber != null)
{
keyInfo.CertSerialNumber.Release();
}
if (keyInfo.CertIssuer != null)
{
keyInfo.CertIssuer.Release();
}
if (keyInfo.KeyId != null)
{
keyInfo.KeyId.Release();
}
}
return ret;
}
