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How do I use HMACSHA1 get hash value of a string in windows store app? RRS feed

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    I want write a windows store app,and I want to get the hash value of a string with a my own key,but I don't know how to use HMACSHA1 in windows store app with c#,how to do......?
    2013年5月21日 13:48
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    IBuffer KeyMaterial = CryptographicBuffer.ConvertStringToBinary(consumer_secret + "&" + oauth_token_secret, BinaryStringEncoding.Utf8);

            MacAlgorithmProvider HmacSha1Provider = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1");
            CryptographicKey MacKey = HmacSha1Provider.CreateKey(KeyMaterial);
            IBuffer DataToBeSigned = CryptographicBuffer.ConvertStringToBinary(SigBaseString, BinaryStringEncoding.Utf8);
            IBuffer SignatureBuffer = CryptographicEngine.Sign(MacKey, DataToBeSigned);
            String Signature = CryptographicBuffer.EncodeToBase64String(SignatureBuffer);
            string oauth_signature = Uri.EscapeDataString(Signature);

    2013年5月22日 9:03
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