public AccessTokenSignature(BasicSignature b, Keypair RequestResponseToken)
{
Timestamp = b.Timestamp;
ConsumerKeypair = b.ConsumerKeypair;
Nonce = b.Nonce;
RequestResponseKeypair = RequestResponseToken;
SignatureParameters = GetSigBaseStringParams();
SignatureBaseString = GetSignatureBaseString();
SigningKey = new SigningKey(ConsumerKeypair, SignatureBaseString);
SignedSignature = Cryptography.GetSignature(SigningKey);
RequestUri = AccessTokenApiUri + "?" + SignatureParameters + "&oauth_signature=" +
Uri.EscapeDataString(SignedSignature);
}
internal static string GetSignature(SigningKey signingKey)
{
IBuffer KeyMaterial;
KeyMaterial = CryptographicBuffer.ConvertStringToBinary(signingKey.GetSigningKey(),
BinaryStringEncoding.Utf8);
var HmacSha1Provider = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1");
var MacKey = HmacSha1Provider.CreateKey(KeyMaterial);
var DataToBeSigned = CryptographicBuffer.ConvertStringToBinary(signingKey.SignatureParameters,
BinaryStringEncoding.Utf8);
var SignatureBuffer = CryptographicEngine.Sign(MacKey, DataToBeSigned);
var Signature = CryptographicBuffer.EncodeToBase64String(SignatureBuffer);
return Signature;
}
public RequestTokenSignature(BasicSignature b, string callback)
{
Timestamp = b.Timestamp;
ConsumerKeypair = b.ConsumerKeypair;
Nonce = b.Nonce;
Callback = callback;
SignatureParameters = GetSigBaseStringParams();
SignatureBaseString = GetSignatureBaseString();
SigningKey = new SigningKey(ConsumerKeypair, SignatureBaseString);
SignedSignature = Cryptography.GetSignature(SigningKey);
RequestUri = RequestTokenApiUri + "?" + SignatureParameters + "&oauth_signature=" +
Uri.EscapeDataString(SignedSignature);
}
public GeneralGetSignature(BasicSignature b, Keypair UserAccessKeypair, string requestUri)
{
Timestamp = b.Timestamp;
ConsumerKeypair = b.ConsumerKeypair;
Nonce = b.Nonce;
AccessKeypair = UserAccessKeypair;
RequestUri = requestUri;
SignatureParameters = GetSigBaseStringParams();
SignatureBaseString = GetSignatureBaseString();
SigningKey = new SigningKey(ConsumerKeypair, UserAccessKeypair, SignatureBaseString);
SignedSignature = Cryptography.GetSignature(SigningKey);
}
