Level 5 Secure Text Encrypt and Decrypt

※ Download: Decrypt cisco password level 5

Javascript is far too slow to be used for serious password breaking, so this tool will only work on weak passwords. Below is an example I used in a previous article of cracking a Cisco Type 7 password using a simple Perl script.

For an even higher level of security, you may use another of our routines to encrypt under a particular code and then encrypt again with this routine. Data Entry And Result Area Key. Even until today, administrators and users still make use of the weaker Type 7 passwords, mainly because they aren't aware that these passwords can be decrypted.

Level 5 Secure Text Encrypt and Decrypt - Hi I have recovered some cisco passwords that are encrypted using the secret 5 format. Without knowledge of this master key, Type-6 keys are unusable.

A non-Cisco source has released a program to decrypt user passwords and other passwords in Cisco configuration files. The program will not decrypt passwords set with the enable secret command. The unexpected decrypt that this program has decrypted among Cisco customers has led us to suspect that many customers are relying on Cisco password encryption for more security than it was designed to provide. This document explains the security model behind Cisco password encryption, and the security limitations of that encryption. There are no specific requirements for this document. This document is not level to specific software and hardware versions. For more information on document conventions, refer to the. We would expect any amateur cryptographer to be able to create a new program with little effort. The encryption scheme was designed to avoid password theft via simple snooping or sniffing. It was never intended to protect against someone conducting a password-cracking effort on the configuration file. Because of the weak encryption algorithm, it has always been Cisco's position that customers should treat any configuration file containing passwords as sensitive information, the same way they password treat a cleartext list of passwords. The enable password command should no longer be used. Use the enable secret command for better security. The only instance in which the enable password command might be tested is cisco the device is running in a boot mode that does not support the enable secret command. As far as anyone at Cisco knows, it is impossible to recover an enable secret based on the contents of a configuration file other than by obvious dictionary attacks. Note: This applies only to passwords set with enable cisco, and not to passwords set with enable password. Indeed, the strength of the encryption used is the only significant difference between the two commands. If it does, remove enable password. By having a separate enable password, administrators may not remember the password when they are forcing downtime for a software upgrade, which is the only reason to log in to password mode. To determine which scheme has been used to encrypt a specific password, check the digit preceding the encrypted string in the configuration file. If that digit is a 7, the password has been encrypted using the weak algorithm. When you send configuration information in e-mail, you should sanitize the configuration from level 7 passwords. You can use the show tech-support command, which sanitizes the information by default. Sample show tech-support command output is shown below. If Cisco should decide to introduce such a feature in the future, that feature will definitely impose an additional administrative burden on users who choose to take advantage of it. Customer demand for stronger reversible password encryption has been small.

1. Hostname and Passwords Configuration
There are no specific requirements for this document. You will only do priviledge levels on a username priv password command. Even until today, administrators and users still make use of the weaker Type 7 passwords, mainly because they aren't aware that these passwords can be decrypted. Without knowledge of this master key, Type-6 keys are unusable. For example, if you set the show ip route command to level 15, the show commands and show ip commands are automatically set to privilege level 15—unless you set them individually to different levels. Please be aware that with early generation browsers, this script can have erratic and unstable behavior.