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view libtomcrypt/src/pk/ecc/ecc.c @ 1790:42745af83b7d

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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
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.
 */

/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b
 *
 * All curves taken from NIST recommendation paper of July 1999
 * Available at http://csrc.nist.gov/cryptval/dss.htm
 */
#include "tomcrypt.h"

/**
  @file ecc.c
  ECC Crypto, Tom St Denis
*/

#ifdef LTC_MECC

/* This holds the key settings.  ***MUST*** be organized by size from smallest to largest. */
const ltc_ecc_set_type ltc_ecc_sets[] = {
#ifdef LTC_ECC112
{
        14,
        "SECP112R1",
        "DB7C2ABF62E35E668076BEAD208B",
        "659EF8BA043916EEDE8911702B22",
        "DB7C2ABF62E35E7628DFAC6561C5",
        "09487239995A5EE76B55F9C2F098",
        "A89CE5AF8724C0A23E0E0FF77500"
},
#endif
#ifdef LTC_ECC128
{
        16,
        "SECP128R1",
        "FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF",
        "E87579C11079F43DD824993C2CEE5ED3",
        "FFFFFFFE0000000075A30D1B9038A115",
        "161FF7528B899B2D0C28607CA52C5B86",
        "CF5AC8395BAFEB13C02DA292DDED7A83",
},
#endif
#ifdef LTC_ECC160
{
        20,
        "SECP160R1",
        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF",
        "1C97BEFC54BD7A8B65ACF89F81D4D4ADC565FA45",
        "0100000000000000000001F4C8F927AED3CA752257",
        "4A96B5688EF573284664698968C38BB913CBFC82",
        "23A628553168947D59DCC912042351377AC5FB32",
},
#endif
#ifdef LTC_ECC192
{
        24,
        "ECC-192",
        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF",
        "64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1",
        "FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831",
        "188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012",
        "7192B95FFC8DA78631011ED6B24CDD573F977A11E794811",
},
#endif
#ifdef LTC_ECC224
{
        28,
        "ECC-224",
        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001",
        "B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4",
        "FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D",
        "B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21",
        "BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34",
},
#endif
#ifdef LTC_ECC256
{
        32,
        "ECC-256",
        "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF",
        "5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B",
        "FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551",
        "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296",
        "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5",
},
#endif
#ifdef LTC_ECC384
{
        48,
        "ECC-384",
        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF",
        "B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF",
        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973",
        "AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7",
        "3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F",
},
#endif
#ifdef LTC_ECC521
{
        66,
        "ECC-521",
        "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
        "51953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00",
        "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409",
        "C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66",
        "11839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD16650",
},
#endif
{
   0,
   NULL, NULL, NULL, NULL, NULL, NULL
}
};

#endif

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