DES_FAILED - Linux
Overview
The DES_FAILED command is a useful tool for examining whether a Linux system has successfully detected and configured a cryptographic engine. Specifically, it checks if the Data Encryption Standard (DES) cipher is supported and available for use on the system.
Syntax
DES_FAILED [options]
Options/Flags
-h, --help: Display help information and exit.-v, --version: Print version information and exit.
Examples
Basic usage:
To run a basic check for DES support, execute:
DES_FAILED
Checking for errors:
The DES_FAILED command also provides information about potential errors. If the DES cipher is not supported, the command will output:
DES_FAILED: No DES-EDE3-CBC available
Common Issues
Missing DES support:
If the command returns the error message "No DES-EDE3-CBC available," the system lacks DES support. Check if the relevant cryptographic modules are loaded and configured correctly.
Integration
The DES_FAILED command can be used in conjunction with other tools for advanced security tasks. For example, it can be combined with openssl to verify the availability of DES encryption and decryption functionality.