OpenSSL Encrypt / Decrypt

gistfile1.txt

# Done on raspberry pi 4
## Linux pi4-master 5.4.51-v7l+ #1333 SMP Mon Aug 10 16:51:40 BST 2020 armv7l GNU/Linux
## OpenSSL 1.1.1d  10 Sep 2019

# Generate Keys
ssh-keygen -t rsa -b 4096 -C "[email protected]"
ssh-keygen -p -m PEM -f ~/.ssh/id_rsa
ssh-keygen -f id_rsa.pub -e -m PKCS8 > id_rsa.pem.pub

# Create password string
openssl rand -out aes256_pass.txt -base64 50

#Encrypt file
openssl enc -e -aes-256-cbc -md sha512 -pbkdf2 -iter 100000 -salt -pass file:./aes256_pass.txt -in secret.txt -out cipher.txt

#Encrypt password file
openssl rsautl -encrypt -pubin -inkey id_rsa.pem.pub -in aes256_pass.txt -out aes256_pass_cipher.txt

#Decret password file
openssl rsautl -decrypt -inkey id_rsa -in aes256_pass_cipher.txt > ~/aes256_pass.txt

#Decrypt file
openssl enc -d -aes-256-cbc -md sha512 -pbkdf2 -iter 100000 -salt -pass file:~/aes256_pass.txt -in cipher.txt -out ~/secret.txt