使用OpenSSL解密.ts文件 [英] Using OpenSSL to decrypt a .ts file

问题描述

所有内容都在同一目录中.

Everything is in the same directory.

M3u8文件:

#EXTM3U
#EXT-X-ALLOW-CACHE:NO
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-KEY:METHOD=AES-128,URI=MyKeyFile.key
#EXTINF:10,
aes_ts_files/filesequence0000000.ts
#EXTINF:10,
aes_ts_files/filesequence0000001.ts
#EXTINF:10,
aes_ts_files/filesequence0000002.ts
#EXTINF:10,
aes_ts_files/filesequence0000003.ts
#EXTINF:10,
aes_ts_files/filesequence0000004.ts
#EXTINF:10,
aes_ts_files/filesequence0000005.ts
#EXTINF:10,
aes_ts_files/filesequence0000006.ts
#EXTINF:10,
aes_ts_files/filesequence0000007.ts
#EXTINF:10,
aes_ts_files/filesequence0000008.ts
#EXTINF:10,
aes_ts_files/filesequence0000009.ts
#EXTINF:10,
aes_ts_files/filesequence0000010.ts
#EXTINF:10,
aes_ts_files/filesequence0000011.ts
#EXTINF:10,
aes_ts_files/filesequence0000012.ts
#EXTINF:10,
aes_ts_files/filesequence0000013.ts
#EXTINF:10,
aes_ts_files/filesequence0000014.ts
#EXTINF:10,
aes_ts_files/filesequence0000015.ts
#EXTINF:10,
aes_ts_files/filesequence0000016.ts
#EXTINF:10,
aes_ts_files/filesequence0000017.ts
#EXTINF:10,
aes_ts_files/filesequence0000018.ts
#EXTINF:10,
aes_ts_files/filesequence0000019.ts
#EXTINF:10,
aes_ts_files/filesequence0000020.ts
#EXTINF:10,
aes_ts_files/filesequence0000021.ts
#EXTINF:10,
aes_ts_files/filesequence0000022.ts
#EXTINF:3,
aes_ts_files/filesequence0000023.ts
#EXT-X-ENDLIST

MyKeyFile.Key

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我知道内容是合法的，因为如果我右键单击.m3u8并选择使用VLC媒体播放器播放"，它将起作用.我需要解密ts文件，以便可以使用ffprobe并检查内容.

I know the content is legit because if I right click on the .m3u8 and select "Play with VLC media player" it works. I need to decrypt the ts files so I can use ffprobe and inspect the content.

这是我尝试过的OpenSSL命令:

openssl aes-128-cbc -d -kfile MyKeyFile.key -iv 0 -nosalt -in aes_ts_files/filesequence0000000.ts -out aes_ts_files/filesequence0000000_out.ts

错误消息: 错误的解密 18676:错误:06065064:数字信封程序:EVP_DecryptFinal_ex:错误的解密:c crypt \ evp \ evp_enc.c:529:

Error Message: bad decrypt 18676:error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt:c rypto\evp\evp_enc.c:529:

推荐答案

-kfile用于从文件第一行中存储的密码派生密钥.

-kfile is used to derive the key from a password stored in the first line of the file.

您已经已经有了实际的密钥，因此您需要使用-K key传递它，其中 key 是十六进制的密钥(xxd -p MyKeyFile.key).

You already have the actual key so you need to pass it using -K key where key is the key in hex (xxd -p MyKeyFile.key).

IV也是一个十六进制字符串，如果未指定，则等于媒体序列.

The IV is also a hex string and it's equal to the media sequence if not specified.

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