Exemple #1
0
        /// <summary>
        /// 检查是否是有效的RSA签名,验证签名有效性
        /// </summary>
        /// <param name="strPublicKey">公钥</param>
        /// <param name="strHash">HASH描述</param>
        /// <param name="strSignedString">签名后的结果</param>
        /// <returns>是否验证通过</returns>
        public static bool IsValidRSASign(string strRSAPublicKey, string strHash, string strSignedString)
        {
            try
            {
                byte[] DeformatterData;
                byte[] HashbyteDeformatter;
                HashbyteDeformatter = Convert.FromBase64String(strHash);
                RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                if (FKStringHelper.IsValidationXMLFormat(strRSAPublicKey))
                {
                    rsa.FromXmlString(strRSAPublicKey);
                }
                else
                {
                    string strXML = FKRSAEncrypt.ConvertRSAPublicKey_Java2DotNet(strRSAPublicKey);
                    if (string.IsNullOrEmpty(strXML))
                    {
                        return(false);
                    }
                    rsa.FromXmlString(strXML);
                }

                RSAPKCS1SignatureDeformatter rsaDeformatter = new RSAPKCS1SignatureDeformatter(rsa);
                rsaDeformatter.SetHashAlgorithm("MD5");
                DeformatterData = Convert.FromBase64String(strSignedString);

                return(rsaDeformatter.VerifySignature(HashbyteDeformatter, DeformatterData));
            }
            catch (Exception e)
            {
                Console.WriteLine($"[Error] RSA signature failed. Error = {e.ToString()}");
                return(false);
            }
        }
Exemple #2
0
        /// <summary>
        /// RSA签名
        /// </summary>
        /// <param name="strRSAPrivateKey">私钥</param>
        /// <param name="strHash"></param>
        /// <returns>签名后数据</returns>
        public static string RSASign(string strRSAPrivateKey, string strHash)
        {
            string strSignatureRet = string.Empty;

            try
            {
                byte[] HashbyteSignature;
                byte[] EncryptedSignatureData;
                HashbyteSignature = Convert.FromBase64String(strHash);
                RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                if (FKStringHelper.IsValidationXMLFormat(strRSAPrivateKey))
                {
                    rsa.FromXmlString(strRSAPrivateKey);
                }
                else
                {
                    string strXML = FKRSAEncrypt.ConvertRSAPrivateKey_Java2DotNet(strRSAPrivateKey);
                    if (string.IsNullOrEmpty(strXML))
                    {
                        return(string.Empty);
                    }
                    rsa.FromXmlString(strXML);
                }

                RSAPKCS1SignatureFormatter rsaFormatter = new RSAPKCS1SignatureFormatter(rsa);
                rsaFormatter.SetHashAlgorithm("MD5");
                EncryptedSignatureData = rsaFormatter.CreateSignature(HashbyteSignature);
                strSignatureRet        = Convert.ToBase64String(EncryptedSignatureData);
                return(strSignatureRet);
            }
            catch (Exception e)
            {
                Console.WriteLine($"[Error] RSA signature failed. Error = {e.ToString()}");
                return(string.Empty);
            }
        }