1. key填充

aes算法对key的字节数有要求 所以对输入的key要做填充处理

fun fillKey(key: String): ByteArray {val random = SecureRandom.getInstance("SHA1PRNG")random.setSeed(key.toByteArray())val generator = KeyGenerator.getInstance("AES")generator.init(random)return generator.generateKey().encoded
}

2. 加密

fun ktAes(key: String, source: String): String {val keyBytes = fillKey(key)return Aes(keyBytes).encryptBase64(source)
}

3. 解密

fun ktDeAes(key: String, source: String): String {val keyBytes = fillKey(key)return Aes(keyBytes).decryptStr(source)
}