Admin.net框架
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using Org.BouncyCastle.Utilities.Encoders;
namespace Admin.NET.Core;
/// <summary>
/// SM4工具类
/// </summary>
public class SM4Util
{
public string secretKey = "1814546261730461"; // 长度必须为16字节
public string iv = "0000000000000000";
public bool hexString = false;
public bool forJavascript = false;
public string Encrypt_ECB(string plainText)
{
var ctx = new SM4_Context
{
isPadding = true,
mode = SM4.SM4_ENCRYPT
};
byte[] keyBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
}
else
{
keyBytes = Encoding.ASCII.GetBytes(secretKey);
}
var sm4 = new SM4();
sm4.FOR_JAVASCRIPT = forJavascript;
sm4.Sm4_setkey_enc(ctx, keyBytes);
byte[] encrypted = sm4.Sm4_crypt_ecb(ctx, Encoding.ASCII.GetBytes(plainText));
string cipherText = Encoding.ASCII.GetString(Hex.Encode(encrypted));
return cipherText;
}
public byte[] Encrypt_ECB(byte[] plainBytes, byte[] keyBytes)
{
var ctx = new SM4_Context
{
isPadding = false,
mode = SM4.SM4_ENCRYPT
};
var sm4 = new SM4();
sm4.FOR_JAVASCRIPT = forJavascript;
sm4.Sm4_setkey_enc(ctx, keyBytes);
byte[] encrypted = sm4.Sm4_crypt_ecb(ctx, plainBytes);
return encrypted;
//return Hex.Encode(encrypted);
}
public string Decrypt_ECB(string cipherText)
{
var ctx = new SM4_Context
{
isPadding = true,
mode = SM4.SM4_DECRYPT
};
byte[] keyBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
}
else
{
keyBytes = Encoding.ASCII.GetBytes(secretKey);
}
var sm4 = new SM4();
sm4.FOR_JAVASCRIPT = forJavascript;
sm4.Sm4_setkey_dec(ctx, keyBytes);
byte[] decrypted = sm4.Sm4_crypt_ecb(ctx, Hex.Decode(cipherText));
return Encoding.ASCII.GetString(decrypted);
}
public string Encrypt_CBC(string plainText)
{
var ctx = new SM4_Context
{
isPadding = true,
mode = SM4.SM4_ENCRYPT
};
byte[] keyBytes;
byte[] ivBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
ivBytes = Hex.Decode(iv);
}
else
{
keyBytes = Encoding.ASCII.GetBytes(secretKey);
ivBytes = Encoding.ASCII.GetBytes(iv);
}
var sm4 = new SM4();
sm4.FOR_JAVASCRIPT = forJavascript;
sm4.Sm4_setkey_enc(ctx, keyBytes);
byte[] encrypted = sm4.Sm4_crypt_cbc(ctx, ivBytes, Encoding.ASCII.GetBytes(plainText));
string cipherText = Encoding.ASCII.GetString(Hex.Encode(encrypted));
return cipherText;
}
public string Decrypt_CBC(string cipherText)
{
var ctx = new SM4_Context
{
isPadding = true,
mode = SM4.SM4_DECRYPT
};
byte[] keyBytes;
byte[] ivBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
ivBytes = Hex.Decode(iv);
}
else
{
keyBytes = Encoding.ASCII.GetBytes(secretKey);
ivBytes = Encoding.ASCII.GetBytes(iv);
}
var sm4 = new SM4();
sm4.FOR_JAVASCRIPT = forJavascript;
sm4.Sm4_setkey_dec(ctx, keyBytes);
byte[] decrypted = sm4.Sm4_crypt_cbc(ctx, ivBytes, Hex.Decode(cipherText));
return Encoding.ASCII.GetString(decrypted);
}
}