Encrypts and signs the given plaintext
with the
keys, which were set with
gnupg_addsignkey and gnupg_addencryptkey before and
returns the encrypted and signed text.
Parameters
identifier
The gnupg identifier, from a call to
gnupg_init() or gnupg.
plaintext
The text being encrypted.
Return Values
On success, this function returns the encrypted and signed text.
On failure, this function returns FALSE.