public void ThenGetCipherDataSucceeds()
{
// Arrange
var cipherData = new CipherData {
CipherValue = new byte[] { 20 }
};
var encryptedKey = new EncryptedKey {
CipherData = cipherData
};
AS4EncryptedKey as4EncryptedKey = AS4EncryptedKey.FromEncryptedKey(encryptedKey);
// Act
CipherData as4CipherData = as4EncryptedKey.GetCipherData();
// Assert
Assert.Equal(cipherData, as4CipherData);
}
private static byte[] DecryptEncryptedKey(AS4EncryptedKey encryptedKey, X509Certificate2 certificate)
{
OaepEncoding encoding = EncodingFactory.Instance
.Create(encryptedKey.GetDigestAlgorithm(), encryptedKey.GetMaskGenerationFunction());
// We do not look at the KeyInfo element in here, but rather decrypt it with the certificate provided as argument.
// Call GetRSAPrivateKey to avoid KeySet does not exist exceptions that might be thrown.
RSA privateKey = certificate.GetRSAPrivateKey();
if (privateKey == null)
{
throw new CryptographicException("The decryption certificate does not contain a private key.");
}
AsymmetricCipherKeyPair encryptionCertificateKeyPair =
DotNetUtilities.GetRsaKeyPair(privateKey);
encoding.Init(false, encryptionCertificateKeyPair.Private);
CipherData cipherData = encryptedKey.GetCipherData();
return(encoding.ProcessBlock(
inBytes: cipherData.CipherValue, inOff: 0, inLen: cipherData.CipherValue.Length));
}
