libgcrypt AES 返回 ascii 密文？
嘿，我正在开发一个 JNI 共享库，它使用 AES256 CFB 模式使用 libgcrypt 加密一些数据，然后将加密的数据传递回 java 应用程序以进行进一步处理。
但是，当我尝试通过再次将数据传递到共享库来解密数据时，我无法再取回原始纯文本。看来，如果我加密和解密相同的数据而不将其传回 Java 应用程序，我将得到原始的纯文本。
我认为这是我用来将加密数据存储到 NewStringUTF() （即 env->NewStringUTF(buf)）的 char 缓冲区的转换，以发送回导致问题的 java，所以有吗获取/将加密数据的输出转换为ascii 或者是否还有其他解决办法？
非常感谢， 富
Hey, I m developing a JNI shared library which uses AES256 CFB mode to encrypt some data using libgcrypt and then passing the encrypted the data back into java app for further processing.
However, when I try to decrypt the data by passing it again to the shared library I can no longer get the original plain text back. It seems that if I encrypted and decrypted the same data without passing it back to the Java app I would get the original plain text back.
I was thinking that it was the conversion of the char buffer that I used to store the encrypted data to a NewStringUTF() (ie env->NewStringUTF(buf)) to send back to the java that was causing the issue so is there away to get/convert the output of the encrypted data to ascii or if there was some other work around?
Many thanks,
Foo
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为什么只使用 JNI 和外部库来加密字符串？使用Java内置的
javax.crypto.Cipher类。但是，关于您的实际问题，您应该将数据作为字节数组而不是字符串传递。密码对字节进行操作，而不是抽象的 Unicode 代码点。
Why are you using JNI and external libraries just to encrypt a string? Use Java's built-in
javax.crypto.Cipherclass.However, regarding your actual question, you should be passing the data as a byte array, not a string. Ciphers operate on bytes, not abstract Unicode codepoints.