RSA_Verify() public static méthode

Verifies an RSA signature for a set of data
public static RSA_Verify ( byte data, byte sig, RSAParameters pubKey ) : bool
data byte The data to verify
sig byte The signature to verify with
pubKey System.Security.Cryptography.RSAParameters The public key to use to verify
Résultat bool
Crypto Class Documentation
Exemple #1
0
        /// <summary>
        ///     Verify the signature of packed candidate data
        /// </summary>
        /// <param name="packed">The packed candidate data</param>
        /// <param name="pubKey">The public key to verify with</param>
        /// <returns></returns>
        public static bool VerifySignature(byte[] packed, RSAParameters pubKey)
        {
            var sig  = Arrays.CopyOfRange(packed, packed.Length - 512, packed.Length);
            var data = Arrays.CopyOfRange(packed, 0, packed.Length - 512);

            return(Crypto.RSA_Verify(data, sig, pubKey));
        }
Exemple #2
0
        /// <summary>
        ///     Unpack storable data to a CandidateOldVersionRecord
        /// </summary>
        /// <param name="packed">The packed OldVersionRecord data</param>
        /// <param name="pubKey">The public key to verify with</param>
        /// <returns>The record object</returns>
        public static CandidateOldVersionRecord Unpack(byte[] packed, RSAParameters pubKey)
        {
            var sig    = Arrays.CopyOfRange(packed, packed.Length - 512, packed.Length);
            var data   = Arrays.CopyOfRange(packed, 0, packed.Length - 512);
            var prefix = Arrays.CopyOfRange(packed, 0, CandidateOldVersionPrefix.Length);

            if (!Crypto.RSA_Verify(data, sig, pubKey))
            {
                throw new DataVerifyException("Could not cryptographically verify candidate update record");
            }

            data = Arrays.CopyOfRange(data, CandidateOldVersionPrefix.Length, data.Length);

            if (!Bytes.Equality(CandidateOldVersionPrefix, prefix) ||
                packed.Length != ChainIdLength * 2 + 512 + CandidateOldVersionPrefix.Length)
            {
                throw new RecordDataInvalidException("Invalid data provided for packed candidate update record");
            }

            return(new CandidateOldVersionRecord(Arrays.CopyOfRange(data, 0, ChainIdLength),
                                                 Arrays.CopyOfRange(data, ChainIdLength, ChainIdLength * 2)));
        }