Mercurial > dropbear
view libtomcrypt/tests/modes_test.c @ 1861:2b3a8026a6ce
Add re-exec for server
This allows ASLR to re-randomize the address
space for every connection, preventing some
vulnerabilities from being exploitable by
repeated probing.
Overhead (memory and time) is yet to be confirmed.
At present this is only enabled on Linux. Other BSD platforms
with fexecve() would probably also work though have not been tested.
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Sun, 30 Jan 2022 10:14:56 +0800 |
parents | 6dba84798cd5 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ /* test CFB/OFB/CBC modes */ #include <tomcrypt_test.h> int modes_test(void) { int ret = CRYPT_NOP; #ifdef LTC_CBC_MODE symmetric_CBC cbc; #endif #ifdef LTC_CFB_MODE symmetric_CFB cfb; #endif #ifdef LTC_OFB_MODE symmetric_OFB ofb; #endif #if defined(LTC_CBC_MODE) || defined(LTC_CFB_MODE) || defined(LTC_OFB_MODE) unsigned char pt[64], ct[64], tmp[64], key[16], iv[16], iv2[16]; int cipher_idx; unsigned long l; /* make a random pt, key and iv */ yarrow_read(pt, 64, &yarrow_prng); yarrow_read(key, 16, &yarrow_prng); yarrow_read(iv, 16, &yarrow_prng); /* get idx of AES handy */ cipher_idx = find_cipher("aes"); if (cipher_idx == -1) { fprintf(stderr, "test requires AES"); return 1; } #endif #ifdef LTC_F8_MODE DO(ret = f8_test_mode()); #endif #ifdef LTC_LRW_MODE DO(ret = lrw_test()); #endif #ifdef LTC_CBC_MODE /* test CBC mode */ /* encode the block */ DO(ret = cbc_start(cipher_idx, iv, key, 16, 0, &cbc)); l = sizeof(iv2); DO(ret = cbc_getiv(iv2, &l, &cbc)); if (l != 16 || memcmp(iv2, iv, 16)) { fprintf(stderr, "cbc_getiv failed"); return 1; } DO(ret = cbc_encrypt(pt, ct, 64, &cbc)); /* decode the block */ DO(ret = cbc_setiv(iv2, l, &cbc)); zeromem(tmp, sizeof(tmp)); DO(ret = cbc_decrypt(ct, tmp, 64, &cbc)); if (memcmp(tmp, pt, 64) != 0) { fprintf(stderr, "CBC failed"); return 1; } #endif #ifdef LTC_CFB_MODE /* test CFB mode */ /* encode the block */ DO(ret = cfb_start(cipher_idx, iv, key, 16, 0, &cfb)); l = sizeof(iv2); DO(ret = cfb_getiv(iv2, &l, &cfb)); /* note we don't memcmp iv2/iv since cfb_start processes the IV for the first block */ if (l != 16) { fprintf(stderr, "cfb_getiv failed"); return 1; } DO(ret = cfb_encrypt(pt, ct, 64, &cfb)); /* decode the block */ DO(ret = cfb_setiv(iv, l, &cfb)); zeromem(tmp, sizeof(tmp)); DO(ret = cfb_decrypt(ct, tmp, 64, &cfb)); if (memcmp(tmp, pt, 64) != 0) { fprintf(stderr, "CFB failed"); return 1; } #endif #ifdef LTC_OFB_MODE /* test OFB mode */ /* encode the block */ DO(ret = ofb_start(cipher_idx, iv, key, 16, 0, &ofb)); l = sizeof(iv2); DO(ret = ofb_getiv(iv2, &l, &ofb)); if (l != 16 || memcmp(iv2, iv, 16)) { fprintf(stderr, "ofb_getiv failed"); return 1; } DO(ret = ofb_encrypt(pt, ct, 64, &ofb)); /* decode the block */ DO(ret = ofb_setiv(iv2, l, &ofb)); zeromem(tmp, sizeof(tmp)); DO(ret = ofb_decrypt(ct, tmp, 64, &ofb)); if (memcmp(tmp, pt, 64) != 0) { fprintf(stderr, "OFB failed"); return 1; } #endif #if defined(LTC_CTR_MODE) && defined(LTC_RIJNDAEL) DO(ret = ctr_test()); #endif #ifdef LTC_XTS_MODE DO(ret = xts_test()); #endif return 0; } /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */