ios - 在 iOS 中使用 commoncrypto 解密 mp3 文件(mp3 文件使用 openssl 加密)
<p><p>我有一个加密的 MP3 文件。该文件使用以下 openssl 方法加密</p>
<pre><code>openssl enc -e -aes-128-cbc -K 00ff349830193845af43984758690213 -p -iv 0 -nosalt -ininput.mp3 -out output.mp3
</code></pre>
<p>然后我尝试在我的 ios 应用程序中解密文件，如下所示，</p>
<pre><code>NSString *resourceDocPath = [ initWithString:[ bundlePath]] ;
NSString *filePath = ;
NSData *key = [@"00ff349830193845af43984758690213" dataUsingEncoding:NSUTF8StringEncoding];
NSData *iv = [@"00000000000000000000000000000000" dataUsingEncoding:NSUTF8StringEncoding];
NSData *fileData = [ initWithContentsOfFile:filePath];
NSData *decryptData;
CCCryptorStatus ccStatus = kCCSuccess;
size_t cryptBytes = 0; // Number of bytes moved to buffer.
NSMutableData*dataOut = ;
ccStatus = CCCrypt(kCCDecrypt,
kCCAlgorithmAES128,
kSecPaddingNone,
key.bytes,
kCCKeySizeAES128,
iv.bytes,
fileData.bytes,
fileData.length,
dataOut.mutableBytes,
dataOut.length,
&cryptBytes);
if (ccStatus != kCCSuccess) {
NSLog(@"CCCrypt status: %d", ccStatus);
}
dataOut.length = cryptBytes;
decryptData = dataOut;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = ;
NSString *appFile = ;
;
NSLog(@"%@",documentsDirectory);
</code></pre>
<p>现在我在文档目录中有解密的 MP3 文件，但它没有播放，实际上它是一个垃圾输出。请建议我一种获得所需输出的方法。</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我用过<a href="https://github.com/rnapier/RNCryptor" rel="noreferrer noopener nofollow">https://github.com/rnapier/RNCryptor</a>用于解密。 </p>
<pre><code>#import "ViewController.h"
#import <Security/Security.h>
#import <MediaPlayer/MediaPlayer.h>
#import "RNEncryptor.h"
#import "RNDecryptor.h"
#import "RNOpenSSLEncryptor.h"
#import "RNOpenSSLDecryptor.h"
NSString *resourceDocPath = [ initWithString:[ bundlePath]] ;
NSString *filePath1 = ; //The encrypted mp3 file (with aPassword)
NSData *passEncryptedData =[ initWithContentsOfFile:filePath1];
NSError *error;
NSString *pass = @"aPassword";
NSData *dataDecrypted = [RNOpenSSLDecryptor decryptData:passEncryptedData
withSettings:kRNCryptorAES256Settings
password:pass
error:&error];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = ;
NSString *appFile = ; //The Decrypted file saved here
;
NSLog(@"%@",documentsDirectory);
</code></pre></p>
<p style="font-size: 20px;">关于ios - 在 iOS 中使用 commoncrypto 解密 mp3 文件(mp3 文件使用 openssl 加密)，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/12670914/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/12670914/
</a>
</p>
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