static int
queue_envelope_dump_buffer(struct envelope *ep, char *evpbuf, size_t evpbufsize)
{
char *evp;
size_t evplen;
size_t complen;
char compbuf[sizeof(struct envelope)];
size_t enclen;
char encbuf[sizeof(struct envelope)];
evp = evpbuf;
evplen = envelope_dump_buffer(ep, evpbuf, evpbufsize);
if (evplen == 0)
return (0);
if (env->sc_queue_flags & QUEUE_COMPRESSION) {
complen = compress_chunk(evp, evplen, compbuf, sizeof compbuf);
if (complen == 0)
return (0);
evp = compbuf;
evplen = complen;
}
if (env->sc_queue_flags & QUEUE_ENCRYPTION) {
enclen = crypto_encrypt_buffer(evp, evplen, encbuf, sizeof encbuf);
if (enclen == 0)
return (0);
evp = encbuf;
evplen = enclen;
}
memmove(evpbuf, evp, evplen);
return (evplen);
}
int
main(int argc, char *argv[])
{
if (argc != 3) {
printf("usage: crypto <key> <buffer>\n");
return 1;
}
if (!crypto_setup(argv[1], strlen(argv[1]))) {
printf("crypto_setup failed\n");
return 1;
}
{
char encbuffer[4096];
size_t enclen;
char decbuffer[4096];
size_t declen;
printf("encrypt/decrypt buffer: ");
enclen = crypto_encrypt_buffer(argv[2], strlen(argv[2]),
encbuffer, sizeof encbuffer);
/* uncomment below to provoke integrity check failure */
/*
* encbuffer[13] = 0x42;
* encbuffer[14] = 0x42;
* encbuffer[15] = 0x42;
* encbuffer[16] = 0x42;
*/
declen = crypto_decrypt_buffer(encbuffer, enclen,
decbuffer, sizeof decbuffer);
if (declen != 0 && !strncmp(argv[2], decbuffer, declen))
printf("ok\n");
else
printf("nope\n");
}
{
FILE *fpin;
FILE *fpout;
printf("encrypt/decrypt file: ");
fpin = fopen("/etc/passwd", "r");
fpout = fopen("/tmp/passwd.enc", "w");
if (!crypto_encrypt_file(fpin, fpout)) {
printf("encryption failed\n");
return 1;
}
fclose(fpin);
fclose(fpout);
/* uncomment below to provoke integrity check failure */
/*
* fpin = fopen("/tmp/passwd.enc", "a");
* fprintf(fpin, "borken");
* fclose(fpin);
*/
fpin = fopen("/tmp/passwd.enc", "r");
fpout = fopen("/tmp/passwd.dec", "w");
if (!crypto_decrypt_file(fpin, fpout))
printf("nope\n");
else
printf("ok\n");
fclose(fpin);
fclose(fpout);
}
return 0;
}
