Esempio n. 1
0
        public string Encrypt(string metaStr, byte[] iv)
        {
            if (iv.Length != 16)
            {
                return(Encrypt(metaStr));
            }
            byte[] orib = _aes.IV;
            _aes.IV = iv;
            byte[] metaStr_byte         = StringByteHelper.GetBytesFromString(metaStr);
            int    metaStr_byte_count   = metaStr_byte.Count();
            int    metaStr_byte_f_count = (metaStr_byte_count / 16 + 1) * 16;

            byte[] metaStr_byte_f = new byte[metaStr_byte_f_count];
            for (int i = 0; i < metaStr_byte_f_count; i++)
            {
                if (i < metaStr_byte_count)
                {
                    metaStr_byte_f[i] = metaStr_byte[i];
                }
                else
                {
                    metaStr_byte_f[i] = 0;
                }
            }
            var res = StringByteHelper.GetStringFromBytes(_aes.CreateEncryptor().TransformFinalBlock(metaStr_byte_f, 0, metaStr_byte_f.Length));

            _aes.IV = orib;
            return(res);
        }
Esempio n. 2
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        public string Decrypt(string metaStr)
        {
            var metaStr_b = StringByteHelper.GetBytesFromString(metaStr);
            var target_b  = _aes.CreateDecryptor().TransformFinalBlock(metaStr_b, 0, metaStr_b.Length);
            int bcount    = target_b.Length;

            while (target_b[--bcount] == 0)
            {
            }
            metaStr_b = new byte[bcount + 1];
            Array.Copy(target_b, metaStr_b, bcount + 1);
            return(StringByteHelper.GetStringFromBytes(metaStr_b));
        }
Esempio n. 3
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        public string Decrypt(string metaStr, byte[] iv)
        {
            if (iv.Length != 16)
            {
                return(Decrypt(metaStr));
            }
            byte[] orib = _aes.IV;
            _aes.IV = iv;
            var metaStr_b = StringByteHelper.GetBytesFromString(metaStr);
            var target_b  = _aes.CreateDecryptor().TransformFinalBlock(metaStr_b, 0, metaStr_b.Length);
            int bcount    = target_b.Length;

            while (target_b[--bcount] == 0)
            {
            }
            metaStr_b = new byte[bcount + 1];
            Array.Copy(target_b, metaStr_b, bcount + 1);
            _aes.IV = orib;
            return(StringByteHelper.GetStringFromBytes(metaStr_b));
        }
Esempio n. 4
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        public string Encrypt(string metaStr)
        {
            byte[] metaStr_byte         = StringByteHelper.GetBytesFromString(metaStr);
            int    metaStr_byte_count   = metaStr_byte.Count();
            int    metaStr_byte_f_count = (metaStr_byte_count / 16 + 1) * 16;

            byte[] metaStr_byte_f = new byte[metaStr_byte_f_count];
            for (int i = 0; i < metaStr_byte_f_count; i++)
            {
                if (i < metaStr_byte_count)
                {
                    metaStr_byte_f[i] = metaStr_byte[i];
                }
                else
                {
                    metaStr_byte_f[i] = 0;
                }
            }
            return(StringByteHelper.GetStringFromBytes(_aes.CreateEncryptor().TransformFinalBlock(metaStr_byte_f, 0, metaStr_byte_f.Length)));
        }
Esempio n. 5
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 public string Hash(string str)
 {
     return(StringByteHelper.GetStringFromBytes(_Hash.ComputeHash(Encoding.UTF8.GetBytes(str))));
 }