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.