Mercurial > dropbear
view libtomcrypt/src/hashes/sha3_test.c @ 1788:1fc0012b9c38
Fix handling of replies to global requests (#112)
The current code assumes that all global requests want / need a reply.
This isn't always true and the request itself indicates if it wants a
reply or not.
It causes a specific problem with [email protected] messages.
These are sent by OpenSSH after authentication to inform the client of
potential other host keys for the host. This can be used to add a new
type of host key or to rotate host keys.
The initial information message from the server is sent as a global
request, but with want_reply set to false. This means that the server
doesn't expect an answer to this message. Instead the client needs to
send a prove request as a reply if it wants to receive proof of
ownership for the host keys.
The bug doesn't cause any current problems with due to how OpenSSH
treats receiving the failure message. It instead treats it as a
keepalive message and further ignores it.
Arguably this is a protocol violation though of Dropbear and it is only
accidental that it doesn't cause a problem with OpenSSH.
The bug was found when adding host keys support to libssh, which is more
strict protocol wise and treats the unexpected failure message an error,
also see https://gitlab.com/libssh/libssh-mirror/-/merge_requests/145
for more information.
The fix here is to honor the want_reply flag in the global request and
to only send a reply if the other side expects a reply.
author | Dirkjan Bussink <d.bussink@gmail.com> |
---|---|
date | Thu, 10 Dec 2020 16:13:13 +0100 |
parents | 6dba84798cd5 |
children |
line wrap: on
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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. */ /* based on https://github.com/brainhub/SHA3IUF (public domain) */ #include "tomcrypt.h" #ifdef LTC_SHA3 int sha3_224_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else unsigned char buf[200], hash[224 / 8]; int i; hash_state c; const unsigned char c1 = 0xa3; const unsigned char sha3_224_empty[224 / 8] = { 0x6b, 0x4e, 0x03, 0x42, 0x36, 0x67, 0xdb, 0xb7, 0x3b, 0x6e, 0x15, 0x45, 0x4f, 0x0e, 0xb1, 0xab, 0xd4, 0x59, 0x7f, 0x9a, 0x1b, 0x07, 0x8e, 0x3f, 0x5b, 0x5a, 0x6b, 0xc7 }; const unsigned char sha3_224_0xa3_200_times[224 / 8] = { 0x93, 0x76, 0x81, 0x6a, 0xba, 0x50, 0x3f, 0x72, 0xf9, 0x6c, 0xe7, 0xeb, 0x65, 0xac, 0x09, 0x5d, 0xee, 0xe3, 0xbe, 0x4b, 0xf9, 0xbb, 0xc2, 0xa1, 0xcb, 0x7e, 0x11, 0xe0 }; XMEMSET(buf, c1, sizeof(buf)); /* SHA3-224 on an empty buffer */ sha3_224_init(&c); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_224_empty, sizeof(sha3_224_empty), "SHA3-224", 0)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-224 in two steps. [FIPS 202] */ sha3_224_init(&c); sha3_process(&c, buf, sizeof(buf) / 2); sha3_process(&c, buf + sizeof(buf) / 2, sizeof(buf) / 2); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_224_0xa3_200_times, sizeof(sha3_224_0xa3_200_times), "SHA3-224", 1)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-224 byte-by-byte: 200 steps. [FIPS 202] */ i = 200; sha3_224_init(&c); while (i--) { sha3_process(&c, &c1, 1); } sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_224_0xa3_200_times, sizeof(sha3_224_0xa3_200_times), "SHA3-224", 2)) { return CRYPT_FAIL_TESTVECTOR; } return CRYPT_OK; #endif } int sha3_256_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else unsigned char buf[200], hash[256 / 8]; int i; hash_state c; const unsigned char c1 = 0xa3; const unsigned char sha3_256_empty[256 / 8] = { 0xa7, 0xff, 0xc6, 0xf8, 0xbf, 0x1e, 0xd7, 0x66, 0x51, 0xc1, 0x47, 0x56, 0xa0, 0x61, 0xd6, 0x62, 0xf5, 0x80, 0xff, 0x4d, 0xe4, 0x3b, 0x49, 0xfa, 0x82, 0xd8, 0x0a, 0x4b, 0x80, 0xf8, 0x43, 0x4a }; const unsigned char sha3_256_0xa3_200_times[256 / 8] = { 0x79, 0xf3, 0x8a, 0xde, 0xc5, 0xc2, 0x03, 0x07, 0xa9, 0x8e, 0xf7, 0x6e, 0x83, 0x24, 0xaf, 0xbf, 0xd4, 0x6c, 0xfd, 0x81, 0xb2, 0x2e, 0x39, 0x73, 0xc6, 0x5f, 0xa1, 0xbd, 0x9d, 0xe3, 0x17, 0x87 }; XMEMSET(buf, c1, sizeof(buf)); /* SHA3-256 on an empty buffer */ sha3_256_init(&c); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_256_empty, sizeof(sha3_256_empty), "SHA3-256", 0)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-256 as a single buffer. [FIPS 202] */ sha3_256_init(&c); sha3_process(&c, buf, sizeof(buf)); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_256_0xa3_200_times, sizeof(sha3_256_0xa3_200_times), "SHA3-256", 1)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-256 in two steps. [FIPS 202] */ sha3_256_init(&c); sha3_process(&c, buf, sizeof(buf) / 2); sha3_process(&c, buf + sizeof(buf) / 2, sizeof(buf) / 2); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_256_0xa3_200_times, sizeof(sha3_256_0xa3_200_times), "SHA3-256", 2)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-256 byte-by-byte: 200 steps. [FIPS 202] */ i = 200; sha3_256_init(&c); while (i--) { sha3_process(&c, &c1, 1); } sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_256_0xa3_200_times, sizeof(sha3_256_0xa3_200_times), "SHA3-256", 3)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-256 byte-by-byte: 135 bytes. Input from [Keccak]. Output * matched with sha3sum. */ sha3_256_init(&c); sha3_process(&c, (unsigned char*) "\xb7\x71\xd5\xce\xf5\xd1\xa4\x1a" "\x93\xd1\x56\x43\xd7\x18\x1d\x2a" "\x2e\xf0\xa8\xe8\x4d\x91\x81\x2f" "\x20\xed\x21\xf1\x47\xbe\xf7\x32" "\xbf\x3a\x60\xef\x40\x67\xc3\x73" "\x4b\x85\xbc\x8c\xd4\x71\x78\x0f" "\x10\xdc\x9e\x82\x91\xb5\x83\x39" "\xa6\x77\xb9\x60\x21\x8f\x71\xe7" "\x93\xf2\x79\x7a\xea\x34\x94\x06" "\x51\x28\x29\x06\x5d\x37\xbb\x55" "\xea\x79\x6f\xa4\xf5\x6f\xd8\x89" "\x6b\x49\xb2\xcd\x19\xb4\x32\x15" "\xad\x96\x7c\x71\x2b\x24\xe5\x03" "\x2d\x06\x52\x32\xe0\x2c\x12\x74" "\x09\xd2\xed\x41\x46\xb9\xd7\x5d" "\x76\x3d\x52\xdb\x98\xd9\x49\xd3" "\xb0\xfe\xd6\xa8\x05\x2f\xbb", 1080 / 8); sha3_done(&c, hash); if(compare_testvector(hash, sizeof(hash), "\xa1\x9e\xee\x92\xbb\x20\x97\xb6" "\x4e\x82\x3d\x59\x77\x98\xaa\x18" "\xbe\x9b\x7c\x73\x6b\x80\x59\xab" "\xfd\x67\x79\xac\x35\xac\x81\xb5", 256 / 8, "SHA3-256", 4)) { return CRYPT_FAIL_TESTVECTOR; } return CRYPT_OK; #endif } int sha3_384_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else unsigned char buf[200], hash[384 / 8]; int i; hash_state c; const unsigned char c1 = 0xa3; const unsigned char sha3_384_0xa3_200_times[384 / 8] = { 0x18, 0x81, 0xde, 0x2c, 0xa7, 0xe4, 0x1e, 0xf9, 0x5d, 0xc4, 0x73, 0x2b, 0x8f, 0x5f, 0x00, 0x2b, 0x18, 0x9c, 0xc1, 0xe4, 0x2b, 0x74, 0x16, 0x8e, 0xd1, 0x73, 0x26, 0x49, 0xce, 0x1d, 0xbc, 0xdd, 0x76, 0x19, 0x7a, 0x31, 0xfd, 0x55, 0xee, 0x98, 0x9f, 0x2d, 0x70, 0x50, 0xdd, 0x47, 0x3e, 0x8f }; XMEMSET(buf, c1, sizeof(buf)); /* SHA3-384 as a single buffer. [FIPS 202] */ sha3_384_init(&c); sha3_process(&c, buf, sizeof(buf)); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_384_0xa3_200_times, sizeof(sha3_384_0xa3_200_times), "SHA3-384", 0)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-384 in two steps. [FIPS 202] */ sha3_384_init(&c); sha3_process(&c, buf, sizeof(buf) / 2); sha3_process(&c, buf + sizeof(buf) / 2, sizeof(buf) / 2); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_384_0xa3_200_times, sizeof(sha3_384_0xa3_200_times), "SHA3-384", 1)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-384 byte-by-byte: 200 steps. [FIPS 202] */ i = 200; sha3_384_init(&c); while (i--) { sha3_process(&c, &c1, 1); } sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_384_0xa3_200_times, sizeof(sha3_384_0xa3_200_times), "SHA3-384", 2)) { return CRYPT_FAIL_TESTVECTOR; } return CRYPT_OK; #endif } int sha3_512_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else unsigned char buf[200], hash[512 / 8]; int i; hash_state c; const unsigned char c1 = 0xa3; const unsigned char sha3_512_0xa3_200_times[512 / 8] = { 0xe7, 0x6d, 0xfa, 0xd2, 0x20, 0x84, 0xa8, 0xb1, 0x46, 0x7f, 0xcf, 0x2f, 0xfa, 0x58, 0x36, 0x1b, 0xec, 0x76, 0x28, 0xed, 0xf5, 0xf3, 0xfd, 0xc0, 0xe4, 0x80, 0x5d, 0xc4, 0x8c, 0xae, 0xec, 0xa8, 0x1b, 0x7c, 0x13, 0xc3, 0x0a, 0xdf, 0x52, 0xa3, 0x65, 0x95, 0x84, 0x73, 0x9a, 0x2d, 0xf4, 0x6b, 0xe5, 0x89, 0xc5, 0x1c, 0xa1, 0xa4, 0xa8, 0x41, 0x6d, 0xf6, 0x54, 0x5a, 0x1c, 0xe8, 0xba, 0x00 }; XMEMSET(buf, c1, sizeof(buf)); /* SHA3-512 as a single buffer. [FIPS 202] */ sha3_512_init(&c); sha3_process(&c, buf, sizeof(buf)); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_512_0xa3_200_times, sizeof(sha3_512_0xa3_200_times), "SHA3-512", 0)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-512 in two steps. [FIPS 202] */ sha3_512_init(&c); sha3_process(&c, buf, sizeof(buf) / 2); sha3_process(&c, buf + sizeof(buf) / 2, sizeof(buf) / 2); sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_512_0xa3_200_times, sizeof(sha3_512_0xa3_200_times), "SHA3-512", 1)) { return CRYPT_FAIL_TESTVECTOR; } /* SHA3-512 byte-by-byte: 200 steps. [FIPS 202] */ i = 200; sha3_512_init(&c); while (i--) { sha3_process(&c, &c1, 1); } sha3_done(&c, hash); if (compare_testvector(hash, sizeof(hash), sha3_512_0xa3_200_times, sizeof(sha3_512_0xa3_200_times), "SHA3-512", 2)) { return CRYPT_FAIL_TESTVECTOR; } return CRYPT_OK; #endif } int sha3_shake_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else unsigned char buf[200], hash[512]; int i; hash_state c; const unsigned char c1 = 0xa3; unsigned long len; const unsigned char shake256_empty[32] = { 0xab, 0x0b, 0xae, 0x31, 0x63, 0x39, 0x89, 0x43, 0x04, 0xe3, 0x58, 0x77, 0xb0, 0xc2, 0x8a, 0x9b, 0x1f, 0xd1, 0x66, 0xc7, 0x96, 0xb9, 0xcc, 0x25, 0x8a, 0x06, 0x4a, 0x8f, 0x57, 0xe2, 0x7f, 0x2a }; const unsigned char shake256_0xa3_200_times[32] = { 0x6a, 0x1a, 0x9d, 0x78, 0x46, 0x43, 0x6e, 0x4d, 0xca, 0x57, 0x28, 0xb6, 0xf7, 0x60, 0xee, 0xf0, 0xca, 0x92, 0xbf, 0x0b, 0xe5, 0x61, 0x5e, 0x96, 0x95, 0x9d, 0x76, 0x71, 0x97, 0xa0, 0xbe, 0xeb }; const unsigned char shake128_empty[32] = { 0x43, 0xe4, 0x1b, 0x45, 0xa6, 0x53, 0xf2, 0xa5, 0xc4, 0x49, 0x2c, 0x1a, 0xdd, 0x54, 0x45, 0x12, 0xdd, 0xa2, 0x52, 0x98, 0x33, 0x46, 0x2b, 0x71, 0xa4, 0x1a, 0x45, 0xbe, 0x97, 0x29, 0x0b, 0x6f }; const unsigned char shake128_0xa3_200_times[32] = { 0x44, 0xc9, 0xfb, 0x35, 0x9f, 0xd5, 0x6a, 0xc0, 0xa9, 0xa7, 0x5a, 0x74, 0x3c, 0xff, 0x68, 0x62, 0xf1, 0x7d, 0x72, 0x59, 0xab, 0x07, 0x52, 0x16, 0xc0, 0x69, 0x95, 0x11, 0x64, 0x3b, 0x64, 0x39 }; XMEMSET(buf, c1, sizeof(buf)); /* SHAKE256 on an empty buffer */ sha3_shake_init(&c, 256); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake256_empty), shake256_empty, sizeof(shake256_empty), "SHAKE256", 0)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE256 via sha3_shake_memory [FIPS 202] */ len = 512; sha3_shake_memory(256, buf, sizeof(buf), hash, &len); if (compare_testvector(hash + 480, sizeof(shake256_0xa3_200_times), shake256_0xa3_200_times, sizeof(shake256_0xa3_200_times), "SHAKE256", 1)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE256 as a single buffer. [FIPS 202] */ sha3_shake_init(&c, 256); sha3_shake_process(&c, buf, sizeof(buf)); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake256_0xa3_200_times), shake256_0xa3_200_times, sizeof(shake256_0xa3_200_times), "SHAKE256", 2)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE256 in two steps. [FIPS 202] */ sha3_shake_init(&c, 256); sha3_shake_process(&c, buf, sizeof(buf) / 2); sha3_shake_process(&c, buf + sizeof(buf) / 2, sizeof(buf) / 2); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake256_0xa3_200_times), shake256_0xa3_200_times, sizeof(shake256_0xa3_200_times), "SHAKE256", 3)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE256 byte-by-byte: 200 steps. [FIPS 202] */ i = 200; sha3_shake_init(&c, 256); while (i--) sha3_shake_process(&c, &c1, 1); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake256_0xa3_200_times), shake256_0xa3_200_times, sizeof(shake256_0xa3_200_times), "SHAKE256", 4)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE128 on an empty buffer */ sha3_shake_init(&c, 128); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake128_empty), shake128_empty, sizeof(shake128_empty), "SHAKE128", 0)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE128 via sha3_shake_memory [FIPS 202] */ len = 512; sha3_shake_memory(128, buf, sizeof(buf), hash, &len); if (compare_testvector(hash + 480, sizeof(shake128_0xa3_200_times), shake128_0xa3_200_times, sizeof(shake128_0xa3_200_times), "SHAKE128", 1)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE128 as a single buffer. [FIPS 202] */ sha3_shake_init(&c, 128); sha3_shake_process(&c, buf, sizeof(buf)); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake128_0xa3_200_times), shake128_0xa3_200_times, sizeof(shake128_0xa3_200_times), "SHAKE128", 2)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE128 in two steps. [FIPS 202] */ sha3_shake_init(&c, 128); sha3_shake_process(&c, buf, sizeof(buf) / 2); sha3_shake_process(&c, buf + sizeof(buf) / 2, sizeof(buf) / 2); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake128_0xa3_200_times), shake128_0xa3_200_times, sizeof(shake128_0xa3_200_times), "SHAKE128", 3)) { return CRYPT_FAIL_TESTVECTOR; } /* SHAKE128 byte-by-byte: 200 steps. [FIPS 202] */ i = 200; sha3_shake_init(&c, 128); while (i--) sha3_shake_process(&c, &c1, 1); for (i = 0; i < 16; i++) sha3_shake_done(&c, hash, 32); /* get 512 bytes, keep in hash the last 32 */ if (compare_testvector(hash, sizeof(shake128_0xa3_200_times), shake128_0xa3_200_times, sizeof(shake128_0xa3_200_times), "SHAKE128", 4)) { return CRYPT_FAIL_TESTVECTOR; } return CRYPT_OK; #endif } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */