/// <summary>
        /// Computes the hash value of a subset of the specified byte array using the
        /// specified hash algorithm, and signs the resulting hash value.
        /// </summary>
        /// <param name="inputStream">The input data for which to compute the hash</param>
        /// <param name="halg">The hash algorithm to use to create the hash value. </param>
        /// <returns>The RSA signature for the specified data.</returns>
        public byte[] SignData(Stream inputStream, object halg)
        {
            int calgHash = CapiHelper.ObjToHashAlgId(halg);
            HashAlgorithmName hashAlgorithmName = CapiHelper.AlgIdToHashAlgorithmName(calgHash);

            byte[] hashVal = HashOneShotHelpers.HashData(hashAlgorithmName, inputStream);
            return(SignHash(hashVal, calgHash));
        }
        /// <summary>
        /// Verifies the signature of a hash value.
        /// </summary>
        public bool VerifyData(byte[] buffer, object halg, byte[] signature)
        {
            int calgHash = CapiHelper.ObjToHashAlgId(halg);
            HashAlgorithmName hashAlgorithmName = CapiHelper.AlgIdToHashAlgorithmName(calgHash);

            byte[] hashVal = HashOneShotHelpers.HashData(hashAlgorithmName, buffer);
            return(VerifyHash(hashVal, calgHash, signature));
        }
        /// <summary>
        /// Computes the hash value of a subset of the specified byte array using the
        /// specified hash algorithm, and signs the resulting hash value.
        /// </summary>
        /// <param name="buffer">The input data for which to compute the hash</param>
        /// <param name="offset">The offset into the array from which to begin using data</param>
        /// <param name="count">The number of bytes in the array to use as data. </param>
        /// <param name="halg">The hash algorithm to use to create the hash value. </param>
        /// <returns>The RSA signature for the specified data.</returns>
        public byte[] SignData(byte[] buffer, int offset, int count, object halg)
        {
            int calgHash = CapiHelper.ObjToHashAlgId(halg);
            HashAlgorithmName hashAlgorithmName = CapiHelper.AlgIdToHashAlgorithmName(calgHash);

            byte[] hashVal = HashOneShotHelpers.HashData(hashAlgorithmName, new ReadOnlySpan <byte>(buffer, offset, count));
            return(SignHash(hashVal, calgHash));
        }
Example #4
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        protected override byte[] HashData(Stream data, HashAlgorithmName hashAlgorithm)
        {
            if (hashAlgorithm != HashAlgorithmName.SHA1)
            {
                throw new CryptographicException(SR.Cryptography_UnknownHashAlgorithm, hashAlgorithm.Name);
            }

            return(HashOneShotHelpers.HashData(hashAlgorithm, data));
        }
Example #5
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        protected override byte[] HashData(byte[] data, int offset, int count, HashAlgorithmName hashAlgorithm)
        {
            if (hashAlgorithm != HashAlgorithmName.SHA1)
            {
                throw new CryptographicException(SR.Cryptography_UnknownHashAlgorithm, hashAlgorithm.Name);
            }

            return(HashOneShotHelpers.HashData(hashAlgorithm, new ReadOnlySpan <byte>(data, offset, count)));
        }
Example #6
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            protected override byte[] HashData(byte[] data, int offset, int count, HashAlgorithmName hashAlgorithm)
            {
                // we're sealed and the base should have checked this already
                Debug.Assert(data != null);
                Debug.Assert(offset >= 0 && offset <= data.Length);
                Debug.Assert(count >= 0 && count <= data.Length);
                Debug.Assert(!string.IsNullOrEmpty(hashAlgorithm.Name));

                return(HashOneShotHelpers.HashData(hashAlgorithm, new ReadOnlySpan <byte>(data, offset, count)));
            }
Example #7
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            protected override byte[] HashData(byte[] data, int offset, int count, HashAlgorithmName hashAlgorithm)
            {
                if (hashAlgorithm != HashAlgorithmName.SHA1)
                {
                    // Matching DSACryptoServiceProvider's "I only understand SHA-1/FIPS 186-2" exception
                    throw new CryptographicException(SR.Cryptography_UnknownHashAlgorithm, hashAlgorithm.Name);
                }

                return(HashOneShotHelpers.HashData(hashAlgorithm, new ReadOnlySpan <byte>(data, offset, count)));
            }
Example #8
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 protected virtual byte[] HashData(Stream data, HashAlgorithmName hashAlgorithm) =>
 HashOneShotHelpers.HashData(hashAlgorithm, data);
Example #9
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 protected virtual byte[] HashData(byte[] data, int offset, int count, HashAlgorithmName hashAlgorithm) =>
 HashOneShotHelpers.HashData(hashAlgorithm, new ReadOnlySpan <byte>(data, offset, count));