请提供一段基于java进行SM1加密的程序
时间: 2024-02-27 20:57:59 浏览: 17
以下是一个基于Java进行SM1加密的简单示例程序:
```java
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.engines.SM1Engine;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.params.ParametersWithIV;
import org.bouncycastle.util.encoders.Hex;
public class SM1EncryptionExample {
public static void main(String[] args) {
byte[] keyBytes = Hex.decode("0123456789ABCDEFFEDCBA9876543210");
byte[] ivBytes = Hex.decode("1234567890ABCDEF");
byte[] plaintext = "Hello, world!".getBytes();
SM1Engine engine = new SM1Engine();
CipherParameters params = new ParametersWithIV(new KeyParameter(keyBytes), ivBytes);
engine.init(true, params);
byte[] ciphertext = new byte[engine.getOutputSize(plaintext.length)];
int len = engine.processBytes(plaintext, 0, plaintext.length, ciphertext, 0);
engine.doFinal(ciphertext, len);
System.out.println("Plaintext: " + Hex.toHexString(plaintext));
System.out.println("Ciphertext: " + Hex.toHexString(ciphertext));
}
}
```
这个程序使用了BouncyCastle库中的SM1Engine类来实现SM1加密。首先定义了一个128位的密钥和一个128位的初始向量,然后将它们组合成一个CipherParameters对象传递给SM1Engine的init()方法。接着对明文进行加密,最后输出密文。