| 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 – uses precomputed tables | | Online rainbow tables | Instant (if password known) | Weak/common passwords | Privacy risk – never upload production hashes |
The device stores it in running-config as:
enable secret MyP@ssw0rd
Verdict: Not possible in the cryptographic sense—but “cracking” 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:
Input: $1$nJq2$U6XgF7kL9mR2tY8wA3bC4dE5fG6h Output: MyP@ssw0rd (after 3 seconds) That’s not decryption – that’s a lookup or brute force. If you need to recover a lost Type 5 secret (authorized recovery only), these are the real solutions:
Cisco Secret 5 Password Decrypt [NEW]
| 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 – uses precomputed tables | | Online rainbow tables | Instant (if password known) | Weak/common passwords | Privacy risk – never upload production hashes |
The device stores it in running-config as: cisco secret 5 password decrypt
enable secret MyP@ssw0rd
Verdict: Not possible in the cryptographic sense—but “cracking” 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
Input: $1$nJq2$U6XgF7kL9mR2tY8wA3bC4dE5fG6h Output: MyP@ssw0rd (after 3 seconds) That’s not decryption – that’s a lookup or brute force. If you need to recover a lost Type 5 secret (authorized recovery only), these are the real solutions: What Is a Cisco Type 5 Password