BlowfishContext *bcrypt_setup(const unsigned char *key, int keybytes,
const unsigned char *salt, int saltbytes)
{
int i;
BlowfishContext *ctx;
ctx = blowfish_make_context();
blowfish_initkey(ctx);
blowfish_expandkey(ctx, key, keybytes, salt, saltbytes);
/* Original bcrypt replaces this fixed loop count with the
* variable cost. OpenSSH instead iterates the whole thing more
* than once if it wants extra rounds. */
for (i = 0; i < 64; i++) {
blowfish_expandkey(ctx, salt, saltbytes, NULL, 0);
blowfish_expandkey(ctx, key, keybytes, NULL, 0);
}
return ctx;
}
static void blowfish_setkey(BlowfishContext *ctx,
const unsigned char *key, short keybytes)
{
blowfish_initkey(ctx);
blowfish_expandkey(ctx, key, keybytes, NULL, 0);
}
