關於Linux操作系統下AES解密失敗的異常如下:
javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.
由於windows上每次生成的key都相同,但是在solaris或部分linux系統上則不同,所以造成解密失敗
解決方法如下:
經過檢查之後,定位原來在生成KEY的方法上,如下:
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public static SecretKey getKey (String strKey) {
try {
KeyGenerator _generator = KeyGenerator.getInstance( "AES" );
_generator.init(128 , new SecureRandom(strKey.getBytes()));
return _generator.generateKey();
} catch (Exception e) {
throw new RuntimeException( " 初始化密鑰出現異常 " );
}
}
修改到如下方式,問題解決:
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public static SecretKey getKey(String strKey) {
try {
KeyGenerator _generator = KeyGenerator.getInstance( "AES" );
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" );
secureRandom.setSeed(strKey.getBytes());
_generator.init(128 ,secureRandom);
return _generator.generateKey();
} catch (Exception e) {
throw new RuntimeException( " 初始化密鑰出現異常 " );
}
}