将Byte数组转换为String的问题
将Byte数组转换为String的问题
提问于 2022-04-26 04:42:56
解密方法无法将接收到的字节数组转换为字符串。
public String decryptData(String data, SecretKeySpec key) throws Exception{
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decodedValue = Base64.decode(data, Base64.DEFAULT);
byte[] decValue = cipher.doFinal(decodedValue);
String outputData = new String(decValue, StandardCharsets.US_ASCII);
Log.d("Log byte:", decodedValue.toString());
Log.d("Log byte:", decValue.toString());
Log.d("Log str:", outputData);
}输出日志：
D/Log byte:: [B@4b0fd32
D/Log byte:: [B@32d3a83
D/Log str:: cipher.doFinal()返回一个空数组，我想这就是我得到空字符串值的原因
回答 1
Stack Overflow用户
发布于 2022-04-26 07:44:12
我用这个方法用AES方法解密。
private final String characterEncoding = "UTF-8";
private final String cipherTransformation = "AES/CBC/PKCS5Padding";
private final String aesEncryptionAlgorithm = "AES";
public String decrypt(String encryptedText, String key) throws KeyException, GeneralSecurityException, GeneralSecurityException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, IOException {
byte [] cipheredBytes = Base64.decode(encryptedText, Base64.DEFAULT);
byte[] keyBytes = getKeyBytes(key);
return new String (decrypt(cipheredBytes, keyBytes, keyBytes), characterEncoding);
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/72008486
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