Member Avatar for rubingeo

hi
i have a doubt in password protection of winrar.In my knowledge there is little way to break the password protection of winrar. but is it still cant be reverse engineered?so that someone can break into winrar?? actually i have to protect a file using winrar. but my friend mentioned about the reverse engineering problem.So is Winrar successful for protection??

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Dani AI

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Short expert summary for : modern WinRAR (RAR5) uses AES‑256 encryption and — if the "Encrypt file names" box is checked — it also encrypts headers so file names, sizes and other metadata are hidden. That means the archive’s cryptography itself is strong; the real weakness is the password chosen. WinRAR encryption FAQ (RAR 5.0 format technote). (win-rar.com)

As noted, no protection survives a sufficiently motivated attacker with time and resources. Offline tools (Hashcat, John the Ripper and commercial recovery suites) can run dictionary, mask and brute‑force attacks against RAR3/RAR5 archives — they work only when the password is guessable or low‑entropy. Whether an attack finishes in minutes or centuries depends entirely on password entropy and the attacker’s hardware. Hashcat example hashes. (hashcat.net)

Practical takeaways missing from earlier replies: 1) create RAR5 archives and tick "Encrypt file names"; 2) use a long, unique passphrase (prefer a long passphrase over short complex words — allow 12–64 characters and avoid common phrases); 3) store the passphrase in a password manager and never send the password with the archive; 4) for high‑value data prefer a dedicated encrypted container (VeraCrypt) or system/file‑level encryption rather than an archive password alone. See NIST guidance on memorized secrets and VeraCrypt docs. NIST SP 800‑63B, VeraCrypt home. (pages.nist.gov)

Brief caution: archive encryption protects only the file contents — it does not protect the host from keyloggers, backups, or social engineering. For sensitive material use full‑disk or container encryption, keep software updated, and treat the passphrase as the single most critical secret.

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Member Avatar for FearlessFourie

no protection is safe, never will be, It is never protectable against people that have lots of money and knowlage, hackers are always busy with new ways and cracks. Thats why you need to think of who you whant to protect it from, what the know about PC/Software/programmablity of them.

Example. If you whant to hide "Funny Stuff" from your girl then Winrar self protect service is cool. (I would suggest something like "Folder lcokbox" since it hides the folder aswel). If you want to protect it from the web, lock it from Winrar and store it on a flash drive out of your PC.

Member Avatar for FearlessFourie

oops, LOL, It's "Folder Lockbox", my bad, fingers to fast for my Head!

Member Avatar for Xlphos

You may want to consider TrueCrypt its an open source encryption program.

Member Avatar for rubingeo

so u are saying there are programs for breaking passwords setup by winrar??but i cant find such a true one since most password breaking softwares employ dictionary attacks and when i google it i got suggested from a lot of articles saying that it may take months/years to break the password even if the machines work for 24/7

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