This is something I've needed at various jobs/situations for years...a place to store the root/router/database/web passwords that only I can see. There are a lot of desktop/handheld apps for this but I always feel like I could lose the computer/handheld that it's on and I'd be boned. I'd rather have something I can stick on a server somewhere and access via a remote shell....or carry it around on a thumb drive. Here are the scripts:
#! /bin/sh openssl bf -a -salt -in $1.txt -out $1.bf && rm -v $1.txt
#! /bin/sh openssl bf -a -d -salt -in $1.bf
To use it, create a file named blah.txt that has your secret info in it. Run the encrypt script first:
$ ./encrypt.sh blah enter bf-cbc encryption password: Verifying - enter bf-cbc encryption password: removed `blah.txt'
It will encrypt the file and remove it. Check the contents of the file:
$ cat blah.bf U2FsdGVkX1/+ZGiXPSZX8MED9aXrm1NfIEjpv5vvFKo=
It's actually base 64 encoded so you can email it to yourself for safe keeping if you so choose.
To decrypt for reading:
$ ./decrypt.sh blah enter bf-cbc decryption password: secret host: secret password secret host2: secret password2
Now take the encrypted output file and the 2 scripts, email it to yourself and store a copy on a thumb drive. :)