Mercurial > dropbear
view libtomcrypt/src/misc/pkcs5/pkcs_5_test.c @ 1715:3974f087d9c0
Disallow leading lines before the ident for server (#102)
Per RFC4253 4.2 clients must be able to process other lines of data
before the version string, server behavior is not defined neither
with MUST/SHOULD nor with MAY.
If server process up to 50 lines too - it may cause too long hanging
session with invalid/evil client that consume host resources and
potentially may lead to DDoS on poor embedded boxes.
Let's require first line from client to be version string and fail
early if it's not - matches both RFC and real OpenSSH behavior.
author | Vladislav Grishenko <themiron@users.noreply.github.com> |
---|---|
date | Mon, 15 Jun 2020 18:22:18 +0500 |
parents | 6dba84798cd5 |
children |
line wrap: on
line source
/* 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. */ #include "tomcrypt.h" /** @file hkdf_test.c PKCS #5 support, self-test, Steffen Jaeckel */ #ifdef LTC_PKCS_5 /* TEST CASES SOURCE: Internet Engineering Task Force (IETF) S. Josefsson Request for Comments: 6070 SJD AB Category: Informational January 2011 ISSN: 2070-1721 */ /** PKCS #5 self-test @return CRYPT_OK if successful, CRYPT_NOP if tests have been disabled. */ int pkcs_5_test (void) { #ifndef LTC_TEST return CRYPT_NOP; #else typedef struct { const char* P; unsigned long P_len; const char* S; unsigned long S_len; int c; unsigned long dkLen; unsigned char DK[40]; } case_item; static const case_item cases_5_2[] = { { "password", 8, "salt", 4, 1, 20, { 0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e, 0x71, 0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60, 0x12, 0x06, 0x2f, 0xe0, 0x37, 0xa6 } }, { "password", 8, "salt", 4, 2, 20, { 0xea, 0x6c, 0x01, 0x4d, 0xc7, 0x2d, 0x6f, 0x8c, 0xcd, 0x1e, 0xd9, 0x2a, 0xce, 0x1d, 0x41, 0xf0, 0xd8, 0xde, 0x89, 0x57 } }, #ifdef LTC_TEST_EXT { "password", 8, "salt", 4, 4096, 20, { 0x4b, 0x00, 0x79, 0x01, 0xb7, 0x65, 0x48, 0x9a, 0xbe, 0xad, 0x49, 0xd9, 0x26, 0xf7, 0x21, 0xd0, 0x65, 0xa4, 0x29, 0xc1 } }, { "password", 8, "salt", 4, 16777216, 20, { 0xee, 0xfe, 0x3d, 0x61, 0xcd, 0x4d, 0xa4, 0xe4, 0xe9, 0x94, 0x5b, 0x3d, 0x6b, 0xa2, 0x15, 0x8c, 0x26, 0x34, 0xe9, 0x84 } }, { "passwordPASSWORDpassword", 25, "saltSALTsaltSALTsaltSALTsaltSALTsalt", 36, 4096, 25, { 0x3d, 0x2e, 0xec, 0x4f, 0xe4, 0x1c, 0x84, 0x9b, 0x80, 0xc8, 0xd8, 0x36, 0x62, 0xc0, 0xe4, 0x4a, 0x8b, 0x29, 0x1a, 0x96, 0x4c, 0xf2, 0xf0, 0x70, 0x38 } }, { "pass\0word", 9, "sa\0lt", 5, 4096, 16, { 0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d, 0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3 } }, #endif /* LTC_TEST_EXT */ }; static const case_item cases_5_1[] = { { "password", 8, "saltsalt", /* must be 8 octects */ 8, /* ignored by alg1 */ 1, 20, { 0xca, 0xb8, 0x6d, 0xd6, 0x26, 0x17, 0x10, 0x89, 0x1e, 0x8c, 0xb5, 0x6e, 0xe3, 0x62, 0x56, 0x91, 0xa7, 0x5d, 0xf3, 0x44 } }, }; static const case_item cases_5_1o[] = { { "password", 8, "saltsalt", /* must be 8 octects */ 8, /* ignored by alg1_openssl */ 1, 20, { 0xca, 0xb8, 0x6d, 0xd6, 0x26, 0x17, 0x10, 0x89, 0x1e, 0x8c, 0xb5, 0x6e, 0xe3, 0x62, 0x56, 0x91, 0xa7, 0x5d, 0xf3, 0x44 } }, { "password", 8, "saltsalt", /* must be 8 octects */ 8, /* ignored by alg1_openssl */ 1, 30, { 0xca, 0xb8, 0x6d, 0xd6, 0x26, 0x17, 0x10, 0x89, 0x1e, 0x8c, 0xb5, 0x6e, 0xe3, 0x62, 0x56, 0x91, 0xa7, 0x5d, 0xf3, 0x44, 0xf0, 0xbf, 0xf4, 0xc1, 0x2c, 0xf3, 0x59, 0x6f, 0xc0, 0x0b } } }; unsigned char DK[40]; unsigned long dkLen; int i, err; int tested=0, failed=0; int hash = find_hash("sha1"); if (hash == -1) { #ifdef LTC_TEST_DBG printf("PKCS#5 test failed: 'sha1' hash not found\n"); #endif return CRYPT_ERROR; } /* testing alg 2 */ for(i=0; i < (int)(sizeof(cases_5_2) / sizeof(cases_5_2[0])); i++) { ++tested; dkLen = cases_5_2[i].dkLen; if((err = pkcs_5_alg2((unsigned char*)cases_5_2[i].P, cases_5_2[i].P_len, (unsigned char*)cases_5_2[i].S, cases_5_2[i].S_len, cases_5_2[i].c, hash, DK, &dkLen)) != CRYPT_OK) { #ifdef LTC_TEST_DBG printf("\npkcs_5_alg2() #%d: Failed/1 (%s)\n", i, error_to_string(err)); #endif ++failed; } else if (compare_testvector(DK, dkLen, cases_5_2[i].DK, cases_5_2[i].dkLen, "PKCS#5_2", i)) { ++failed; } } /* testing alg 1 */ for(i=0; i < (int)(sizeof(cases_5_1) / sizeof(case_item)); i++, tested++) { dkLen = cases_5_1[i].dkLen; if((err = pkcs_5_alg1((unsigned char*)cases_5_1[i].P, cases_5_1[i].P_len, (unsigned char*)cases_5_1[i].S, cases_5_1[i].c, hash, DK, &dkLen)) != CRYPT_OK) { #ifdef LTC_TEST_DBG printf("\npkcs_5_alg1() #%d: Failed/1 (%s)\n", i, error_to_string(err)); #endif ++failed; } else if (compare_testvector(DK, dkLen, cases_5_1[i].DK, cases_5_1[i].dkLen, "PKCS#5_1", i)) { ++failed; } } /* testing alg 1_openssl */ for(i = 0; i < (int)(sizeof(cases_5_1o) / sizeof(cases_5_1o[0])); i++, tested++) { dkLen = cases_5_1o[i].dkLen; if ((err = pkcs_5_alg1_openssl((unsigned char*)cases_5_1o[i].P, cases_5_1o[i].P_len, (unsigned char*)cases_5_1o[i].S, cases_5_1o[i].c, hash, DK, &dkLen)) != CRYPT_OK) { #ifdef LTC_TEST_DBG printf("\npkcs_5_alg1_openssl() #%d: Failed/1 (%s)\n", i, error_to_string(err)); #endif ++failed; } else if (compare_testvector(DK, dkLen, cases_5_1o[i].DK, cases_5_1o[i].dkLen, "PKCS#5_1o", i)) { ++failed; } } return (failed != 0) ? CRYPT_FAIL_TESTVECTOR : CRYPT_OK; #endif } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */