des_crypt - Linux
Overview
des_crypt is an encryption tool used to create and verify DES-based encrypted passwords. It utilizes the Data Encryption Standard (DES) algorithm to secure data, making it useful for encrypting passwords or other sensitive information.
Syntax
des_crypt [-s salt] password [salt]
Options/Flags
-s salt:
Specifies the salt to use for encryption. If omitted, a random salt will be generated.
Examples
Simple Encryption:
echo "mypassword" | des_crypt
Using a Specific Salt:
echo "mypassword" | des_crypt -s 01234567
Verification:
echo "mypassword" | des_crypt -s 01234567 | grep "$s01234567"
Common Issues
- Invalid password: The password must be at least 8 characters long.
- Incorrect salt: The salt provided must be exactly 8 characters long.
Integration
des_crypt can be used with other commands to automate password encryption and verification tasks. For example:
echo "user1:$(echo "mypassword" | des_crypt -s 01234567)" | chpasswd
Related Commands
cryptopensslmd5sum