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Xpl0itU 2023-09-08 17:30:57 +02:00
parent 4bc0236cf8
commit 8f13b57ae8
7 changed files with 17 additions and 18 deletions
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5
hash.go
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@ -13,8 +13,7 @@ import (
var commonKey = []byte{0xD7, 0xB0, 0x04, 0x02, 0x65, 0x9B, 0xA2, 0xAB, 0xD2, 0xCB, 0x0D, 0xB2, 0x7F, 0xA2, 0xB6, 0x56}
func checkContentHashes(path string, content contentInfo, cipherHashTree *cipher.Block) error {
cHashTree := *cipherHashTree
func checkContentHashes(path string, content contentInfo, cipherHashTree cipher.Block) error {
h3Data, err := os.ReadFile(filepath.Join(path, fmt.Sprintf("%s.h3", content.ID)))
if err != nil {
return fmt.Errorf("failed to read H3 hash tree file: %w", err)
@ -42,7 +41,7 @@ func checkContentHashes(path string, content contentInfo, cipherHashTree *cipher
iv := make([]byte, aes.BlockSize)
for chunkNum := 0; chunkNum < chunkCount; chunkNum++ {
encryptedFile.Read(buffer)
cipher.NewCBCDecrypter(cHashTree, iv).CryptBlocks(decryptedContent, buffer)
cipher.NewCBCDecrypter(cipherHashTree, iv).CryptBlocks(decryptedContent, buffer)
h0Hashes := decryptedContent[0:0x140]
h1Hashes := decryptedContent[0x140:0x280]