root/openpgpsdk/trunk/examples/encrypt.c

#include <openpgpsdk/create.h>
#include <openpgpsdk/crypto.h>
#include <openpgpsdk/keyring.h>
#include <unistd.h>
#include <stdlib.h>
#include <assert.h>

int main(int argc,char **argv)
    {
    const char *keyfile;
    const char *user_id;
    ops_keyring_t keyring;
    const ops_key_data_t *key;
    ops_create_info_t *info;

    if(argc != 3)
        {
        fprintf(stderr, "%s <keyfile> <user_id>\n", argv[0]);
        exit(1);
        }

    keyfile = argv[1];
    user_id = argv[2];

    ops_init();
    ops_keyring_read(&keyring, keyfile);

    key = ops_keyring_find_key_by_userid(&keyring, user_id);
    if (!key)
        {
        printf("No key found for user %s in keyring %s\n", user_id, keyfile);
        exit(1);
        }

    info = ops_create_info_new();
    ops_writer_set_fd(info, 1);  // stdout for now
    ops_writer_push_encrypt(info, key);

    for( ; ; )
        {
        unsigned char buf[8192];
        int n;
        
        n=read(0,buf,sizeof buf);
        if(!n)
            break;
        if(n < 0)
            {
            perror("stdin");
            exit(4);
            }
        ops_write(buf,n,info);
        }

    return 0;
    }