public String Encrypt_CBC(String plainText)
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.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);
}
SM4 sm4 = new SM4();
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 byte[] Encrypt_ECB(byte[] plainBytes, byte[] keyBytes)
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = false;
ctx.mode = SM4.SM4_ENCRYPT;
SM4 sm4 = new SM4();
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)
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_DECRYPT;
byte[] keyBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
}
else
{
keyBytes = Encoding.ASCII.GetBytes(secretKey);
}
SM4 sm4 = new SM4();
sm4.sm4_setkey_dec(ctx, keyBytes);
byte[] decrypted = sm4.sm4_crypt_ecb(ctx, Hex.Decode(cipherText));
return(Encoding.ASCII.GetString(decrypted));
}