OpenSSL/Cheatsheet

Command line shortcuts

Base64

Encode

openssl base64 < file.b64 > file.txt

Decode

openssl base64 -d < file.txt > file.b64

MD5

Checksum a file

openssl md5 file

SHA1

Checksum a file

openssl sha1 file

Generate Passwords

Crypt

openssl passwd <password>

MD5 (for /etc/passwd and /etc/shadow)

openssl passwd -1 

File encryption

Encrypt

openssl enc -aes-256-cbc < file > file.aes
enter aes-256-cbc encryption password:
Verifying - enter aes-256-cbc encryption password:

Decrypt

openssl enc -d -aes-256-cbc -in file.aes > file 
enter aes-256-cbc decryption password: