本文实例为大家分享了.net core使用MD5加密解密字符串的具体代码，供大家参考，具体内容如下

///

/// 加密

///

/// 要加密的文本

/// 秘钥

///

public static string Encrypt(string Text, string sKey="test")

{

DESCryptoServiceProvider des = new DESCryptoServiceProvider();

byte[] inputByteArray;

inputByteArray = Encoding.Default.GetBytes(Text);

des.Key = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0,8));

des.IV = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));

System.IO.MemoryStream ms = new System.IO.MemoryStream();

CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);

cs.Write(inputByteArray, 0, inputByteArray.Length);

cs.FlushFinalBlock();

StringBuilder ret = new StringBuilder();

foreach (byte b in ms.ToArray())

{

ret.AppendFormat("{0:X2}", b);

}

md4j= ret.ToString();

return ret.ToString();

}

///

/// 解密

///

///

///

///

public static string Decrypt(string Text, string sKey = "test")

{

DESCryptoServiceProvider des = new DESCryptoServiceProvider();

int len;

len = Text.Length / 2;

byte[] inputByteArray = new byte[len];

int x, i;

for (x = 0; x < len; x++)

{

i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);

inputByteArray[x] = (byte)i;

}

des.Key = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));

des.IV = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));

System.IO.MemoryStream ms = new System.IO.MemoryStream();

CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);

cs.Write(inputByteArray, 0, inputByteArray.Length);

cs.FlushFinalBlock();

return Encoding.Default.GetString(ms.ToArray());

}

///

/// 32位MD5加密

///

///

///

private static string Md5Hash(string input)

{

MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();

byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));

StringBuilder sBuilder = new StringBuilder();

for (int i = 0; i < data.Length; i++)

{

sBuilder.Append(data[i].ToString("x2"));

}

return sBuilder.ToString();

}

调用加密 解密看效果

public static string md4j = "";

static void Main(string[] args)

{

//加密

Encrypt("123456");

Decrypt(md4j);

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。