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N_m3u8DL-RE
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支持`CHACHA20`解密

This commit is contained in:
nilaoda 2022-11-01 00:18:50 +08:00
parent 26c74f4392
commit 4647d87ec1
1 changed files with 12 additions and 2 deletions
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14
src/N_m3u8DL-RE/Downloader/SimpleDownloader.cs
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@ -2,6 +2,7 @@
using N_m3u8DL_RE.Common.Enum; using N_m3u8DL_RE.Common.Enum;
using N_m3u8DL_RE.Common.Log; using N_m3u8DL_RE.Common.Log;
using N_m3u8DL_RE.Config; using N_m3u8DL_RE.Config;
using N_m3u8DL_RE.Crypto;
using N_m3u8DL_RE.Entity; using N_m3u8DL_RE.Entity;
using N_m3u8DL_RE.Util; using N_m3u8DL_RE.Util;
using Spectre.Console; using Spectre.Console;
@ -38,13 +39,22 @@ namespace N_m3u8DL_RE.Downloader
{ {
var key = segment.EncryptInfo.Key; var key = segment.EncryptInfo.Key;
var iv = segment.EncryptInfo.IV; var iv = segment.EncryptInfo.IV;
Crypto.AESUtil.AES128Decrypt(dResult.ActualFilePath, key!, iv!); AESUtil.AES128Decrypt(dResult.ActualFilePath, key!, iv!);
} }
else if (segment.EncryptInfo.Method == EncryptMethod.AES_128_ECB) else if (segment.EncryptInfo.Method == EncryptMethod.AES_128_ECB)
{ {
var key = segment.EncryptInfo.Key; var key = segment.EncryptInfo.Key;
var iv = segment.EncryptInfo.IV; var iv = segment.EncryptInfo.IV;
Crypto.AESUtil.AES128Decrypt(dResult.ActualFilePath, key!, iv!, System.Security.Cryptography.CipherMode.ECB); AESUtil.AES128Decrypt(dResult.ActualFilePath, key!, iv!, System.Security.Cryptography.CipherMode.ECB);
}
else if (segment.EncryptInfo.Method == EncryptMethod.CHACHA20)
{
var key = segment.EncryptInfo.Key;
var nonce = segment.EncryptInfo.IV;
var fileBytes = File.ReadAllBytes(dResult.ActualFilePath);
var decrypted = ChaCha20Util.DecryptPer1024Bytes(fileBytes, key!, nonce!);
await File.WriteAllBytesAsync(dResult.ActualFilePath, decrypted);
} }
else if (segment.EncryptInfo.Method == EncryptMethod.SAMPLE_AES_CTR) else if (segment.EncryptInfo.Method == EncryptMethod.SAMPLE_AES_CTR)
{ {