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If I compress a file in a .7z archive with password, is it undecryptable without password?

Fresh7 days ago
Mar 15, 20262405 views
Confidence Score0%
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Problem

I'm just curious to know whether or not an encrypted file is really save in terms of decrypting if I compress (or just save) a file into a archive with a password. If I use a strong and unpredictable password, is the only way to decrypt it a brute force attack? 7-Zip seems to use AES-256, which, ac…

Error Output

.7z

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1 Fix

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New Fix – Awaiting Verification

Fix for: If I compress a file in a .7z archive with password, is it undecryptable without password?

Low Risk

There are various options with 7z to improve the security. By default a ZIP file doesn't encrypt the file table - this means that an attacker knows what the files are and which are most likely to contain recognizable patterns, such as English langua…

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