Answers for "c# encrypt with string"

C#
4

c# encrypt decrypt string

public static string Base64Decode(string base64EncodedData)
{
   var base64EncodedBytes = System.Convert.FromBase64String(base64EncodedData);
   return System.Text.Encoding.UTF8.GetString(base64EncodedBytes);
}
public static string Base64Encode(string plainText)
{
   var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
   return System.Convert.ToBase64String(plainTextBytes);
}
Posted by: Guest on July-11-2020
0

c# encrypted

string keyString = "encrypt123456789";
var key = Encoding.UTF8.GetBytes(keyString);//16 bit or 32 bit key string

using (var aesAlg = Aes.Create())
{
    using (var encryptor = aesAlg.CreateEncryptor(key, aesAlg.IV))
    {
        using (var msEncrypt = new MemoryStream())
        {
            using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
            using (var swEncrypt = new StreamWriter(csEncrypt))
            {
                swEncrypt.Write(text);
            }

            var iv = aesAlg.IV;

            var decryptedContent = msEncrypt.ToArray();

            var result = new byte[iv.Length + decryptedContent.Length];

            Buffer.BlockCopy(iv, 0, result, 0, iv.Length);
            Buffer.BlockCopy(decryptedContent, 0, result, iv.Length, decryptedContent.Length);

            return Convert.ToBase64String(result);
        }
    }
}
Posted by: Guest on September-01-2021

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