Android加密不工作（PBKDF2WithHmacSHA256加密与AES / CBC / PKCS7Padding）

问题描述

我正在尝试使用密码算法AES / CBC / PKCS7Padding编写加密代码，HMAC算法HmacSHA256和密钥导出算法PBKDF2WithHmacSHA256在android的帮助下。但是它显示：

CryptorException：使用PBKDF2WithHmacSHA256无法从密码生成密钥

和

NoSuchAlgorithmException：SecretKeyFactory PBKDF2WithHmacSHA256实现未找到

  try {
 SecretKeyFactory factory = SecretKeyFactory 
 .getInstance（KEY_DERIVATION_ALGORITHM）; 
 SecretKey tmp = factory.generateSecret（new PBEKeySpec（password，
 salt，getPBKDFIterations（），AES_256_KEY_SIZE * 8））; 
返回新的SecretKeySpec（tmp.getEncoded（），AES_NAME）; 
} catch（GeneralSecurityException e）{
 throw new CryptorException（String.format（
Failed to generate key from password using％s。，
 KEY_DERIVATION_ALGORITHM），e）; 
} 
  

任何帮助将不胜感激。

你可以看一下在项目的一个分支处，，它试图对代码进行几个Android相关的改进。我相信你的问题可能在代码库中得到解决。

据我所知，没有可用的Android提供者提供一个名为 PBKDF2WithHmacSHA256 。非常沮丧！

I am trying to write an encryption code using Cipher Algorithm "AES/CBC/PKCS7Padding", HMAC algorithm "HmacSHA256" and key derivation algorithm "PBKDF2WithHmacSHA256" with the help of android JNCryptor. But it shows:

CryptorException: Failed to generate key from password using PBKDF2WithHmacSHA256

and

NoSuchAlgorithmException: SecretKeyFactory PBKDF2WithHmacSHA256 implementation not found

 try {
   SecretKeyFactory factory = SecretKeyFactory
     .getInstance(KEY_DERIVATION_ALGORITHM);
   SecretKey tmp = factory.generateSecret(new PBEKeySpec(password,
     salt, getPBKDFIterations(), AES_256_KEY_SIZE * 8));
   return new SecretKeySpec(tmp.getEncoded(), AES_NAME);
  } catch (GeneralSecurityException e) {
   throw new CryptorException(String.format(
     "Failed to generate key from password using %s.",
     KEY_DERIVATION_ALGORITHM), e);
  }

any help will be appreciated.

解决方案

Apologies for commenting and not realising you were talking about my software, JNCryptor.

You could take a look at a fork of the project, https://github.com/t0mm13b/AndroJNCryptor, which has attempted to make several Android-related improvements to the code. I believe your problem may be addressed in that code base.

As far as I know, there is no Android provider available that offers an algorithm named PBKDF2WithHmacSHA256. Quite frustrating!

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