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c# encrypt decrypt string

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Casual Coder answered on July 11, 2020 Popularity 10/10 Helpfulness 6/10

answer c# encrypt decrypt string

related c# EncryptString & DecryptString

related how to make a c# encrypt and decrypt string cmd

c# encrypt decrypt string

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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);
}

Popularity 10/10 Helpfulness 6/10 Language csharp

Source: Grepper

Tags: c# string

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Contributed on Jul 11 2020

Casual Coder

0 Answers Avg Quality 2/10

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c# EncryptString & DecryptString

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public static string EncryptString(string text, string keyString)
        {
            var key = Encoding.UTF8.GetBytes(keyString);

            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);
                    }
                }
            }
        }

        public static string DecryptString(string cipherText, string keyString)
        {
            var fullCipher = Convert.FromBase64String(cipherText);

            var iv = new byte[16];
            var cipher = new byte[16];

            Buffer.BlockCopy(fullCipher, 0, iv, 0, iv.Length);
            Buffer.BlockCopy(fullCipher, iv.Length, cipher, 0, iv.Length);
            var key = Encoding.UTF8.GetBytes(keyString);

            using (var aesAlg = Aes.Create())
            {
                using (var decryptor = aesAlg.CreateDecryptor(key, iv))
                {
                    string result;
                    using (var msDecrypt = new MemoryStream(cipher))
                    {
                        using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
                        {
                            using (var srDecrypt = new StreamReader(csDecrypt))
                            {
                                result = srDecrypt.ReadToEnd();
                            }
                        }
                    }

                    return result;
                }
            }
        }

Popularity 7/10 Helpfulness 4/10 Language csharp

Source: mikaelkoskinen.net

Tags: c#

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Contributed on Dec 24 2022

Tareq Saleh

0 Answers Avg Quality 2/10

how to make a c# encrypt and decrypt string cmd

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jdkdkebebejsidxtid59s8ziz5i

Popularity 1/10 Helpfulness 1/10 Language csharp

Source: Grepper

Tags: c# cmd string

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Contributed on May 19 2022

amirmohammad fatemi

0 Answers Avg Quality 2/10

c# encrypt decrypt string

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