OpenSSL/Cheatsheet
Jump to navigation
Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Command line shortcuts
| Type | Action | Command | Comment |
|---|---|---|---|
| Help | List | openssl list-standard-commands | |
| Base64 | Encode | openssl base64 -in <INPUT>.txt -out <OUTPUT>.b64 | |
| Base64 | Decode | openssl base64 -d -in <File>.b64 -out <File>.txt | |
| MD5 | Checksum | openssl md5 <File> | Same as md5sum <File> |
| SHA1 | Checksum | openssl sha1 <File> | Same as sha1sum <File> |
| SHA224 | Checksum | openssl sha224 <File> | Same as sha224sum <File> |
| SHA256 | Checksum | openssl sha256 <File> | Same as sha256sum <File> |
| SHA384 | Checksum | openssl sha384 <File> | Same as sha384sum <File> |
| SHA512 | Checksum | openssl sha512 <File> | Same as sha512sum <File> |
| Password | Encrypt | openssl passwd <Password> | Creates a crypt-ed password for use with /etc/shadow [1] |
| Password | Encrypt | openssl passwd -1 <Password> | Creates a md5 password for use with /etc/shadow [1] |
Notes
- Newer versions of Debian use the sha-512 there is a tool called mkpasswd that will create compatible passwords.
File encryption
Encrypt
openssl enc -aes-256-cbc -in <File> -out <File>.aes enter aes-256-cbc encryption password: Verifying - enter aes-256-cbc encryption password:
Encrypt with password from file
openssl enc -aes-256-cbc -pass file:<PwFile>> -in <File> -out <File>.aes
Decrypt
openssl enc -d -aes-256-cbc -in <File>.aes -out <File> enter aes-256-cbc decryption password:
Decrypt with password from file
openssl enc -d -aes-256-cbc -pass file:<PwFile> -in <File>.aes -out <File>