Exemple #1
0
 public static bool RSACheckContent(string signContent, string sign, string publicKeyPem, string charset, bool keyFromFile)
 {
     try
     {
         string sPublicKeyPEM;
         if (keyFromFile)
         {
             sPublicKeyPEM = File.ReadAllText(publicKeyPem);
         }
         else
         {
             sPublicKeyPEM = "-----BEGIN PUBLIC KEY-----\r\n";
             sPublicKeyPEM = sPublicKeyPEM + publicKeyPem;
             sPublicKeyPEM = sPublicKeyPEM + "-----END PUBLIC KEY-----\r\n\r\n";
         }
         RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
         rsa.PersistKeyInCsp = false;
         RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
         SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
         if (string.IsNullOrEmpty(charset))
         {
             charset = DEFAULT_CHARSET;
         }
         bool bVerifyResultOriginal = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), sha1, Convert.FromBase64String(sign));
         return(bVerifyResultOriginal);
     }
     catch (Exception ex)
     {
         string s = ex.Message.ToString();
         return(false);
     }
 }
Exemple #2
0
        public static string RSAEncrypt(string content, string publicKeyPem, string charset)
        {
            try
            {
                string sPublicKeyPEM         = File.ReadAllText(publicKeyPem);
                RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                rsa.PersistKeyInCsp = false;
                RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
                if (string.IsNullOrEmpty(charset))
                {
                    charset = DEFAULT_CHARSET;
                }
                byte[] data         = Encoding.GetEncoding(charset).GetBytes(content);
                int    maxBlockSize = rsa.KeySize / 8 - 11; //加密块最大长度限制
                if (data.Length <= maxBlockSize)
                {
                    byte[] cipherbytes = rsa.Encrypt(data, false);
                    return(Convert.ToBase64String(cipherbytes));
                }
                MemoryStream plaiStream = new MemoryStream(data);
                MemoryStream crypStream = new MemoryStream();
                Byte[]       buffer     = new Byte[maxBlockSize];
                int          blockSize  = plaiStream.Read(buffer, 0, maxBlockSize);
                while (blockSize > 0)
                {
                    Byte[] toEncrypt = new Byte[blockSize];
                    Array.Copy(buffer, 0, toEncrypt, 0, blockSize);
                    Byte[] cryptograph = rsa.Encrypt(toEncrypt, false);
                    crypStream.Write(cryptograph, 0, cryptograph.Length);
                    blockSize = plaiStream.Read(buffer, 0, maxBlockSize);
                }

                return(Convert.ToBase64String(crypStream.ToArray(), Base64FormattingOptions.None));
            }
            catch (Exception ex)
            {
                throw;
                //throw new AopException("EncryptContent = " + content + ",charset = " + charset, ex);
            }
        }
Exemple #3
0
        public static bool RSACheckContent(string signContent, string sign, string publicKeyPem, string charset, string signType)
        {
            try
            {
                if (string.IsNullOrEmpty(charset))
                {
                    charset = DEFAULT_CHARSET;
                }


                if ("RSA2".Equals(signType))
                {
                    string sPublicKeyPEM = File.ReadAllText(publicKeyPem);

                    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                    rsa.PersistKeyInCsp = false;
                    RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);

                    bool bVerifyResultOriginal = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), "SHA256", Convert.FromBase64String(sign));
                    return(bVerifyResultOriginal);
                }
                else
                {
                    string sPublicKeyPEM         = File.ReadAllText(publicKeyPem);
                    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                    rsa.PersistKeyInCsp = false;
                    RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);

                    SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
                    bool bVerifyResultOriginal     = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), sha1, Convert.FromBase64String(sign));
                    return(bVerifyResultOriginal);
                }
            }
            catch
            {
                return(false);
            }
        }