这个问题可是让我头疼了好久,并试了很多方法在此推荐两种方法:
1.SecretKeySpec skeySpec = new SecretKeySpec(getRawKey(key), “AES”);
private static byte[] getRawKey(byte[] seed) throws Exception {
KeyGenerator kgen = KeyGenerator.getInstance(“AES”);
SecureRandom sr = SecureRandom.getInstance(“SHA1PRNG”, “Crypto”);
sr.setSeed(seed);
kgen.init(128, sr); // 192 and 256 bits may not be available
SecretKey skey = kgen.generateKey();
byte[] raw = skey.getEncoded();
return raw;
}
红色的部分为注意项,不能写为SecureRandom sr = SecureRandom.getInstance(“SHA1PRNG”);
2.Cipher cipher = Cipher.getInstance(“AES”); ---------4.3以上有bug
修改为
Cipher cipher = Cipher.getInstance(“AES/ECB/ZeroBytePadding”);
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原文链接:https://blog.csdn.net/qq_25749749/article/details/103185604