To pay - algorithm knowledge 1 C # PKCS7 encryption and decryption C # And Java 3DES encryption mode ECB / PKCS7

 

Information: C # PKCS7 encryption and decryption

// encrypted string 
    public  String Encryption ( String TOE)
    {
        // encryption and decryption must use the same key, specific to fill out, but must be a 32-bit 
        byte [] = keyArray UTF8Encoding.UTF8.GetBytes ( " 12345678123456781234567812345678 " );
        RijndaelManaged rijndaelManaged = new RijndaelManaged();
        rijndaelManaged.Key = keyArray;
        rijndaelManaged.Mode = CipherMode.ECB;
        rijndaelManaged.Padding = PaddingMode.PKCS7;
        ICryptoTransform icryptoTransform = rijndaelManaged.CreateEncryptor();

        byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toE);
        byte[] resultArray = icryptoTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

        return Convert.ToBase64String( resultArray, 0, resultArray.Length);
    }

    // decryption string 
    public  String Decryption ( String TOD)
    { 
        // encryption and decryption must use the same key, fill their own specific value, but must be a 32-bit 
        byte [] = keyArray UTF8Encoding.UTF8.GetBytes ( " 12345678123456781234567812345678 " );
        RijndaelManaged rijndaelManaged = new RijndaelManaged();
        rijndaelManaged.Key = keyArray;
        rijndaelManaged.Mode = CipherMode.ECB;
        rijndaelManaged.Padding = PaddingMode.PKCS7;
        ICryptoTransform cTransform = rijndaelManaged.CreateDecryptor();

        byte[] toEncryptArray = Convert.FromBase64String(toD);
        byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

        return UTF8Encoding.UTF8.GetString(resultArray);
    }

 

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Reference: C # And the Java 3DES encryption mode ECB / PKCS7

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One

///  <Summary> 
        /// to create a signature
         ///  </ Summary> 
        ///  <param name = "Data"> tag data </ param> 
        ///  <Returns> </ Returns> 
        Private  static  byte [] CreateSign ( byte [] Data)
        {
            IF (Data == null )
                 the throw  new new ArgumentNullException The ( " Data not empty " );

            X509Certificate2 userCert = CreateCertificate(ConfigInfo.certFileName,ConfigInfo.Password);
            if (userCert == null)
                throw new ArgumentNullException("证书不能为空");

            Content the ContentInfo = new new the ContentInfo (Data); // set the data to be signed 
            SignedCms SignedCms = new new SignedCms (Content);
            CmsSigner signer = new CmsSigner(userCert);
            try
            {
                signedCms.ComputeSignature (Signer); // create a signature 
                return signedCms.Encode ();
            }
            catch (CryptographicException ex)
            {
                throw ex;
            }

        }

two

///  <the Summary> 
        /// Create a certificate
         ///  </ the Summary> 
        ///  <param name = "fileName"> File name </ param> 
        ///  <param name = "password"> Password </ param > 
        ///  <Returns> </ Returns> 
        public  static an X509Certificate2 CreateCertificate ( String fileName, String password)
        {
            if (string.IsNullOrEmpty(fileName) || string.IsNullOrEmpty(password))
            {
                return null;
            }
            try
            {
                return new X509Certificate2(fileName, password, X509KeyStorageFlags.Exportable);
            }
            catch (CryptographicException ex)
            {
                throw ex;
            }
        }

three

///  <Summary> 
        /// verify the signature
         ///  </ Summary> 
        ///  <param name = "Signature"> tag data </ param> 
        ///  <param name = "Certificate"> certificate </ param> 
        ///  <Returns> </ Returns> 
        public  static  BOOL the Verify ( byte [] Signature, byte [] Data)
        {
            ContentInfo contentInfo = new ContentInfo(data);
            SignedCms verifyCms = new SignedCms(contentInfo,true);
            try
            {
                verifyCms.Decode(signature);
                verifyCms.CheckSignature(true);
                return true;
            }
            catch (CryptographicException ex)
            {
                ServiceHub.AddLog (RuntimeLogType.Exception, null , " signature decoding failure: " + ex.Message, ex.StackTrace);
                 the throw EX;
            }
        }

 

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