I have a gpg keypair (2048 RSA) in binary file: a.pub and a.sec, now I want to convert it to text format, how to do that?
To convert the keys without importing them:
To wrap a file in PGP ASCII armor, type:
$ gpg --enarmor < filename.bin > filename.txt
To unwrap a file already in PGP ASCII armor, type:
$ gpg --dearmor < filename.txt > filename.bin
http://www.linuxjournal.com/article/8732 (thanks to @nik)