$ openssl enc -aes-256-cbc -in hp.txt -out hp_aes_256_cbc.txt -a
enter aes-256-cbc encryption password: {Your birthday in yyyymmdd}
Verifying - enter aes-256-cbc encryption password:
$ cat hp_aes_256_cbc.txt
U2FsdGVkX1/ybsnIb6CbQytm/9kI024J2waBTe2AZD/rErK5P8sg1N/ke9oMuNx8