ETOOBUSY 🚀 minimal blogging for the impatient
I recently discovered that OpenSSL has an
So… if you have a shared password/secret, you can leverage it to do some encryption and decription.
Let’s assume that you set the password in the environment variable
$ PASS="$(printf >&2 'enter password> '; read x; printf '%s' "$x")"
enc sub-command, by default, does the encryption, like this:
$ cleartext='53cr3t5!' $ printf '%s' "$cleartext" \ | openssl enc -base64 -aes256 -pass pass:"$PASS" U2FsdGVkX18jFNoH2NtxHrdN8pnGKUMuk8XTnW4QBgM=
To decrypt, use the same command but add option
$ cyphertext='U2FsdGVkX18jFNoH2NtxHrdN8pnGKUMuk8XTnW4QBgM=' $ printf '%s\n' "$cyphertext" \ | openssl enc -d -base64 -aes256 -pass pass:"$PASS" 53cr3t5
One thing to note: the
printf for feeding the
$cyphertext to the
decrypting process MUST end with a newline!