enable secret MyP@ssw0rd
Verdict: Not possible in the cryptographic senseтАФbut тАЬcrackingтАЭ is very real. 2/5 for decryption, 4/5 for recoverability. 1. What Is a Cisco Type 5 Password? In Cisco IOS, when you configure:
| Tool | Speed (MD5) | Best for | Notes | |------|-------------|----------|-------| | | ~8 billion c/sec on 8x GPU | Fast dictionary + rules | Format: $1$<salt>$<hash> | | John the Ripper | ~100M c/sec CPU | Custom wordlists | Has --format=md5crypt | | CiscoType5Decrypt (old) | Slow, broken | Legacy only | Avoid тАУ uses precomputed tables | | Online rainbow tables | Instant (if password known) | Weak/common passwords | Privacy risk тАУ never upload production hashes |
The device stores it in running-config as:
Use Hashcat or John the Ripper, respect legal boundaries, and migrate to Type 8 secrets.
You cannot decrypt a Cisco Type 5 secret. You can only crack it. If the password is strong, move on. If itтАЩs weak, Hashcat will reveal it in seconds. DonтАЩt trust any тАЬinstant decryptтАЭ website тАУ theyтАЩre either lying, logging your hashes, or using huge precomputed tables.
Input: $1$nJq2$U6XgF7kL9mR2tY8wA3bC4dE5fG6h Output: MyP@ssw0rd (after 3 seconds) ThatтАЩs not decryption тАУ thatтАЩs a lookup or brute force. If you need to recover a lost Type 5 secret (authorized recovery only), these are the real solutions: