Mercurial > dropbear

view libtomcrypt/src/pk/dh/dh.c @ 1715:3974f087d9c0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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"

#ifdef LTC_MDH

/* This holds the key settings.  ***MUST*** be organized by size from smallest to largest. */
const ltc_dh_set_type ltc_dh_sets[] = {
#ifdef LTC_DH768
{  /* 768-bit MODP Group 1 - https://tools.ietf.org/html/rfc7296#appendix-B.1 */
   96,
   "DH-768",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A63A3620FFFFFFFFFFFFFFFF"
},
#endif
#ifdef LTC_DH1024
{  /* 1024-bit MODP Group 2 - https://tools.ietf.org/html/rfc7296#appendix-B.2 */
   128,
   "DH-1024",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
   "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381"
   "FFFFFFFFFFFFFFFF"
},
#endif
#ifdef LTC_DH1536
{  /* 1536-bit MODP Group 5 - https://tools.ietf.org/html/rfc3526#section-2 */
   192,
   "DH-1536",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
   "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
   "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
   "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
   "670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF"
},
#endif
#ifdef LTC_DH2048
{  /* 2048-bit MODP Group 14 - https://tools.ietf.org/html/rfc3526#section-3 */
   256,
   "DH-2048",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
   "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
   "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
   "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
   "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
   "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
   "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
   "15728E5A8AACAA68FFFFFFFFFFFFFFFF"
},
#endif
#ifdef LTC_DH3072
{  /* 3072-bit MODP Group 15 - https://tools.ietf.org/html/rfc3526#section-4 */
   384,
   "DH-3072",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
   "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
   "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
   "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
   "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
   "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
   "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
   "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
   "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
   "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
   "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
   "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
   "43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF"
},
#endif
#ifdef LTC_DH4096
{  /* 4096-bit MODP Group 16 - https://tools.ietf.org/html/rfc3526#section-5 */
   512,
   "DH-4096",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
   "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
   "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
   "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
   "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
   "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
   "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
   "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
   "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
   "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
   "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
   "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
   "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7"
   "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA"
   "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6"
   "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED"
   "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9"
   "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199"
   "FFFFFFFFFFFFFFFF"
},
#endif
#ifdef LTC_DH6144
{  /* 6144-bit MODP Group 17 - https://tools.ietf.org/html/rfc3526#section-6 */
   768,
   "DH-6144",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
   "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
   "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
   "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
   "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
   "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
   "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
   "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
   "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
   "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
   "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
   "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
   "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7"
   "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA"
   "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6"
   "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED"
   "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9"
   "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492"
   "36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BD"
   "F8FF9406AD9E530EE5DB382F413001AEB06A53ED9027D831"
   "179727B0865A8918DA3EDBEBCF9B14ED44CE6CBACED4BB1B"
   "DB7F1447E6CC254B332051512BD7AF426FB8F401378CD2BF"
   "5983CA01C64B92ECF032EA15D1721D03F482D7CE6E74FEF6"
   "D55E702F46980C82B5A84031900B1C9E59E7C97FBEC7E8F3"
   "23A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA"
   "CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE328"
   "06A1D58BB7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55C"
   "DA56C9EC2EF29632387FE8D76E3C0468043E8F663F4860EE"
   "12BF2D5B0B7474D6E694F91E6DCC4024FFFFFFFFFFFFFFFF"
},
#endif
#ifdef LTC_DH8192
{  /* 8192-bit MODP Group 18 - https://tools.ietf.org/html/rfc3526#section-7 */
   1024,
   "DH-8192",
   "2",
   "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
   "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
   "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
   "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
   "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
   "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
   "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
   "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
   "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
   "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
   "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
   "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
   "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
   "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
   "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
   "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7"
   "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA"
   "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6"
   "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED"
   "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9"
   "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492"
   "36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BD"
   "F8FF9406AD9E530EE5DB382F413001AEB06A53ED9027D831"
   "179727B0865A8918DA3EDBEBCF9B14ED44CE6CBACED4BB1B"
   "DB7F1447E6CC254B332051512BD7AF426FB8F401378CD2BF"
   "5983CA01C64B92ECF032EA15D1721D03F482D7CE6E74FEF6"
   "D55E702F46980C82B5A84031900B1C9E59E7C97FBEC7E8F3"
   "23A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA"
   "CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE328"
   "06A1D58BB7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55C"
   "DA56C9EC2EF29632387FE8D76E3C0468043E8F663F4860EE"
   "12BF2D5B0B7474D6E694F91E6DBE115974A3926F12FEE5E4"
   "38777CB6A932DF8CD8BEC4D073B931BA3BC832B68D9DD300"
   "741FA7BF8AFC47ED2576F6936BA424663AAB639C5AE4F568"
   "3423B4742BF1C978238F16CBE39D652DE3FDB8BEFC848AD9"
   "22222E04A4037C0713EB57A81A23F0C73473FC646CEA306B"
   "4BCBC8862F8385DDFA9D4B7FA2C087E879683303ED5BDD3A"
   "062B3CF5B3A278A66D2A13F83F44F82DDF310EE074AB6A36"
   "4597E899A0255DC164F31CC50846851DF9AB48195DED7EA1"
   "B1D510BD7EE74D73FAF36BC31ECFA268359046F4EB879F92"
   "4009438B481C6CD7889A002ED5EE382BC9190DA6FC026E47"
   "9558E4475677E9AA9E3050E2765694DFC81F56E880B96E71"
   "60C980DD98EDD3DFFFFFFFFFFFFFFFFF"
},
#endif
{
   0,
   NULL,
   NULL,
   NULL
}
};

/**
  Returns the DH group size (octets) for given key
  @param key   The DH key to get the size of
  @return The group size in octets (0 on error)
 */
int dh_get_groupsize(dh_key *key)
{
   if (key == NULL) return 0;
   return mp_unsigned_bin_size(key->prime);
}

#endif /* LTC_MDH */

/* ref:         $Format:%D$ */
/* git commit:  $Format:%H$ */
/* commit time: $Format:%ai$ */