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Clearer error message in decompressing decrypted backup

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KnugiHK
2022-01-17 10:46:02 +08:00
parent 1faf111e64
commit c73eabe2a4
1 changed files with 4 additions and 1 deletions
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5
Whatsapp_Chat_Exporter/extract.py
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@@ -59,7 +59,10 @@ def decrypt_backup(database, key, output, crypt14=True):
main_key = key[126:] main_key = key[126:]
cipher = AES.new(main_key, AES.MODE_GCM, iv) cipher = AES.new(main_key, AES.MODE_GCM, iv)
db_compressed = cipher.decrypt(db_ciphertext) db_compressed = cipher.decrypt(db_ciphertext)
db = zlib.decompress(db_compressed) try:
db = zlib.decompress(db_compressed)
except zlib.error:
print("Decompressing failed. Possibly incorrect offsets used in decryption.")
if db[0:6].upper() == b"SQLITE": if db[0:6].upper() == b"SQLITE":
with open(output, "wb") as f: with open(output, "wb") as f:
f.write(db) f.write(db)