public static AsymmetricSignResponse Unmarshall(UnmarshallerContext context)
{
AsymmetricSignResponse asymmetricSignResponse = new AsymmetricSignResponse();
asymmetricSignResponse.HttpResponse = context.HttpResponse;
asymmetricSignResponse._Value = context.StringValue("AsymmetricSign.Value");
asymmetricSignResponse.KeyId = context.StringValue("AsymmetricSign.KeyId");
asymmetricSignResponse.RequestId = context.StringValue("AsymmetricSign.RequestId");
asymmetricSignResponse.KeyVersionId = context.StringValue("AsymmetricSign.KeyVersionId");
return(asymmetricSignResponse);
}
public byte[] SignAsymmetric(
string projectId = "my-project", string locationId = "us-east1", string keyRingId = "my-key-ring", string keyId = "my-key", string keyVersionId = "123",
string message = "Sample message")
{
// Create the client.
KeyManagementServiceClient client = KeyManagementServiceClient.Create();
// Build the key version name.
CryptoKeyVersionName keyVersionName = new CryptoKeyVersionName(projectId, locationId, keyRingId, keyId, keyVersionId);
// Convert the message into bytes. Cryptographic plaintexts and
// ciphertexts are always byte arrays.
byte[] plaintext = Encoding.UTF8.GetBytes(message);
// Calculate the digest.
SHA256 sha256 = SHA256.Create();
byte[] hash = sha256.ComputeHash(plaintext);
// Build the digest.
//
// Note: Key algorithms will require a varying hash function. For
// example, EC_SIGN_P384_SHA384 requires SHA-384.
Digest digest = new Digest
{
Sha256 = ByteString.CopyFrom(hash),
};
// Call the API.
AsymmetricSignResponse result = client.AsymmetricSign(keyVersionName, digest);
// Get the signature.
byte[] signature = result.Signature.ToByteArray();
// Return the result.
return(signature);
}