Can Libcrypt work with ASCII Armored Keys?
wk at gnupg.org
Wed Dec 5 08:38:27 CET 2007
On Wed, 5 Dec 2007 01:12, presannar at ami.com said:
> Thanx Werner for your reply. The file to be verified and decrypted
> will be signed using gpg in Windows environment. I need to decrypt the
> same in the EFI environment. I searched online and RFC 2440 specifies
> that the ASCII Armor refers to the Radix-64 encoding.
> Am I right to assume that once I dearmor the key, I should be able to
> use the gcry_sexp_sscan api to use the key for decryption?
Definitely not. After stripping the armor you get to a binary OpenPGP
message which is quite a complex protocol.
I assume that you have full control over the creation of the data and
don't need to accept arbitrary OpenPGP message. Under such conditions
it is easier to write a useful parser, decryptor and verifier. I did
this once for signature verification  and have a "Tiny GPG" version
in the works which can eventually be embedded into other applications.
Die Gedanken sind frei. Auschnahme regelt ein Bundeschgesetz.
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