- size_t sz = 0, rest; \
- pre##_ofbctx ctx; \
- int status = 0; \
- int done = 0; \
- pre##_ctx k; \
- \
- size_t keysz = PRE##_KEYSZ ? \
- PRE##_KEYSZ : strlen((const char *)key); \
- \
- fputs(name "-ofb: ", stdout); \
- \
- pre##_init(&k, key, keysz); \
- pre##_ofbsetkey(&ctx, &k); \
- \
- while (sz <= sizeof(text)) { \
- rest = sizeof(text) - sz; \
- memcpy(ct, text, sizeof(text)); \
- pre##_ofbsetiv(&ctx, iv); \
- pre##_ofbencrypt(&ctx, ct, ct, sz); \
- pre##_ofbencrypt(&ctx, ct + sz, ct + sz, rest); \
- memcpy(pt, ct, sizeof(text)); \
- pre##_ofbsetiv(&ctx, iv); \
- pre##_ofbencrypt(&ctx, pt, pt, rest); \
- pre##_ofbencrypt(&ctx, pt + rest, pt + rest, sz); \
- if (memcmp(pt, text, sizeof(text)) == 0) { \
- done++; \
- if (sizeof(text) < 40 || done % 8 == 0) \
- fputc('.', stdout); \
- if (done % 480 == 0) \
- fputs("\n\t", stdout); \
- fflush(stdout); \
- } else { \
- printf("\nError (sz = %lu)\n", (unsigned long)sz); \
- status = 1; \
- printf("\tplaintext = "); hexdump(text, sz, 0); \
- printf(", "); hexdump(text + sz, rest, sz); \
- fputc('\n', stdout); \
- printf("\tciphertext = "); hexdump(ct, sz, 0); \
- printf(", "); hexdump(ct + sz, rest, sz); \
- fputc('\n', stdout); \
- printf("\trecovered text = "); hexdump(pt, sz, 0); \
- printf(", "); hexdump(pt + sz, rest, sz); \
- fputc('\n', stdout); \
- fputc('\n', stdout); \
- } \
- if (sz < 63) \
- sz++; \
- else \
- sz += 9; \
- } \
- \
- fputs(status ? " failed\n" : " ok\n", stdout); \
- return (status); \