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ZucExample.java
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48 lines (39 loc) · 1.17 KB
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/*
* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
import org.gmssl.Zuc;
import org.gmssl.Random;
public class ZucExample {
public static void main(String[] args) {
Random rng = new Random();
byte[] key = rng.randBytes(Zuc.KEY_SIZE);
byte[] iv = rng.randBytes(Zuc.IV_SIZE);
byte[] ciphertext = new byte[32];
byte[] plaintext = new byte[32];
int cipherlen;
int plainlen;
int i;
Zuc zuc = new Zuc();
zuc.init(key, iv);
cipherlen = zuc.update("abc".getBytes(), 0, 3, ciphertext, 0);
cipherlen += zuc.doFinal(ciphertext, cipherlen);
System.out.print("ciphertext : ");
for (i = 0; i < cipherlen; i++) {
System.out.printf("%02x", ciphertext[i]);
}
System.out.print("\n");
zuc.init(key, iv);
plainlen = zuc.update(ciphertext, 0, cipherlen, plaintext, 0);
plainlen += zuc.doFinal(plaintext, plainlen);
System.out.print("plaintext : ");
for (i = 0; i < plainlen; i++) {
System.out.printf("%02x", plaintext[i]);
}
System.out.print("\n");
}
}