Mercurial > dropbear
view libtomcrypt/tests/file_test.c @ 1790:42745af83b7d
Introduce extra delay before closing unauthenticated sessions
To make it harder for attackers, introduce a delay to keep an
unauthenticated session open a bit longer, thus blocking a connection
slot until after the delay.
Without this, while there is a limit on the amount of attempts an attacker
can make at the same time (MAX_UNAUTH_PER_IP), the time taken by dropbear to
handle one attempt is still short and thus for each of the allowed parallel
attempts many attempts can be chained one after the other. The attempt rate
is then:
"MAX_UNAUTH_PER_IP / <process time of one attempt>".
With the delay, this rate becomes:
"MAX_UNAUTH_PER_IP / UNAUTH_CLOSE_DELAY".
author | Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> |
---|---|
date | Wed, 15 Feb 2017 13:53:04 +0100 |
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 file related functions */ #include <tomcrypt_test.h> int file_test(void) { #ifdef LTC_NO_FILE return CRYPT_NOP; #else unsigned char key[32] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F }; unsigned char buf[200]; unsigned long len; const char *fname = "tests/test.key"; FILE *in; int err, isha256, iaes; /* expected results */ unsigned char exp_sha256[32] = { 0x76, 0xEC, 0x7F, 0xAE, 0xBD, 0xC4, 0x2A, 0x4D, 0xE3, 0x5C, 0xA7, 0x00, 0x24, 0xC2, 0xD2, 0x73, 0xE9, 0xF7, 0x85, 0x6C, 0xA6, 0x16, 0x12, 0xE8, 0x9F, 0x5F, 0x66, 0x35, 0x0B, 0xA8, 0xCF, 0x5F }; isha256 = find_hash("sha256"); iaes = find_cipher("aes"); len = sizeof(buf); if ((in = fopen(fname, "rb")) == NULL) return CRYPT_FILE_NOTFOUND; err = hash_filehandle(isha256, in, buf, &len); fclose(in); if (err != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_sha256, 32, "hash_filehandle", 1)) return 1; len = sizeof(buf); if ((err = hash_file(isha256, fname, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_sha256, 32, "hash_file", 1)) return 1; #ifdef LTC_HMAC { unsigned char exp_hmacsha256[32] = { 0xE4, 0x07, 0x74, 0x95, 0xF1, 0xF8, 0x5B, 0xB5, 0xF1, 0x4F, 0x7D, 0x4F, 0x59, 0x8E, 0x4B, 0xBC, 0x8F, 0x68, 0xCF, 0xBA, 0x2E, 0xAD, 0xC4, 0x63, 0x9D, 0x7F, 0x02, 0x99, 0x8C, 0x08, 0xAC, 0xC0 }; len = sizeof(buf); if ((err = hmac_file(isha256, fname, key, 32, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_hmacsha256, 32, "hmac_file", 1)) return 1; } #endif #ifdef LTC_OMAC { unsigned char exp_omacaes[16] = { 0x50, 0xB4, 0x6C, 0x62, 0xE9, 0xCA, 0x48, 0xFC, 0x38, 0x8D, 0xF4, 0xA2, 0x7D, 0x6A, 0x1E, 0xD8 }; len = sizeof(buf); if ((err = omac_file(iaes, key, 32, fname, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_omacaes, 16, "omac_file", 1)) return 1; } #endif #ifdef LTC_PMAC { unsigned char exp_pmacaes[16] = { 0x7D, 0x65, 0xF0, 0x75, 0x4F, 0x8D, 0xE2, 0xB0, 0xE4, 0xFA, 0x54, 0x4E, 0x45, 0x01, 0x36, 0x1B }; len = sizeof(buf); if ((err = pmac_file(iaes, key, 32, fname, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_pmacaes, 16, "pmac_file", 1)) return 1; } #endif #ifdef LTC_XCBC { unsigned char exp_xcbcaes[16] = { 0x9C, 0x73, 0xA2, 0xD7, 0x90, 0xA5, 0x86, 0x25, 0x4D, 0x3C, 0x8A, 0x6A, 0x24, 0x6D, 0xD1, 0xAB }; len = sizeof(buf); if ((err = xcbc_file(iaes, key, 32, fname, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_xcbcaes, 16, "xcbc_file", 1)) return 1; } #endif #ifdef LTC_F9_MODE { unsigned char exp_f9aes[16] = { 0x6B, 0x6A, 0x18, 0x34, 0x13, 0x8E, 0x01, 0xEF, 0x33, 0x8E, 0x7A, 0x3F, 0x5B, 0x9A, 0xA6, 0x7A }; len = sizeof(buf); if ((err = f9_file(iaes, key, 32, fname, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_f9aes, 16, "f9_file", 1)) return 1; } #endif #ifdef LTC_POLY1305 { unsigned char exp_poly1305[16] = { 0xD0, 0xC7, 0xFB, 0x13, 0xA8, 0x87, 0x84, 0x23, 0x21, 0xCC, 0xA9, 0x43, 0x81, 0x18, 0x75, 0xBE }; len = sizeof(buf); if ((err = poly1305_file(fname, key, 32, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_poly1305, 16, "poly1305_file", 1)) return 1; } #endif #ifdef LTC_BLAKE2SMAC { unsigned char exp_blake2smac[16] = { 0x4f, 0x94, 0x45, 0x15, 0xcd, 0xd1, 0xca, 0x02, 0x1a, 0x0c, 0x7a, 0xe4, 0x6d, 0x2f, 0xe8, 0xb3 }; len = 16; if ((err = blake2smac_file(fname, key, 32, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_blake2smac, 16, "exp_blake2smac_file", 1)) return 1; } #endif #ifdef LTC_BLAKE2BMAC { unsigned char exp_blake2bmac[16] = { 0xdf, 0x0e, 0x7a, 0xab, 0x96, 0x6b, 0x75, 0x4e, 0x52, 0x6a, 0x43, 0x96, 0xbd, 0xef, 0xab, 0x44 }; len = 16; if ((err = blake2bmac_file(fname, key, 32, buf, &len)) != CRYPT_OK) return err; if (compare_testvector(buf, len, exp_blake2bmac, 16, "exp_blake2bmac_file", 1)) return 1; } #endif return CRYPT_OK; #endif } /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */