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ntru: Replaced ntru_drbg by drbg

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This commit is contained in:
Andreas Steffen 2019-10-10 12:50:08 +02:00
parent 737375a2d2
commit 6d3a743d90
10 changed files with 31 additions and 679 deletions
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4
conf/plugins/ntru.opt
View File

@ -1,7 +1,3 @@
charon.plugins.ntru.max_drbg_requests = 4294967294
Number of pseudo-random bit requests from the DRBG before an automatic
reseeding occurs.
charon.plugins.ntru.parameter_set = optimum
The following parameter sets are available: **x9_98_speed**,
**x9_98_bandwidth**, **x9_98_balance** and **optimum**, the last set not

1
src/libstrongswan/plugins/ntru/Makefile.am
View File

@ -13,7 +13,6 @@ endif
libstrongswan_ntru_la_SOURCES = \
ntru_plugin.h ntru_plugin.c \
ntru_convert.h ntru_convert.c \
ntru_drbg.h ntru_drbg.c \
ntru_ke.h ntru_ke.c \
ntru_param_set.h ntru_param_set.c \
ntru_poly.h ntru_poly.c \

295
src/libstrongswan/plugins/ntru/ntru_drbg.c
View File

@ -1,295 +0,0 @@
/*
* Copyright (C) 2013 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "ntru_drbg.h"
#include <utils/debug.h>
#include <utils/test.h>
#define MAX_STRENGTH_BITS 256
#define MAX_DRBG_REQUESTS 0xfffffffe
typedef struct private_ntru_drbg_t private_ntru_drbg_t;
/**
* Private data of an ntru_drbg_t object.
*/
struct private_ntru_drbg_t {
/**
* Public ntru_drbg_t interface.
*/
ntru_drbg_t public;
/**
* Security strength in bits of the DRBG
*/
uint32_t strength;
/**
* Number of requests for pseudorandom bits
*/
uint32_t reseed_counter;
/**
* Maximum number of requests for pseudorandom bits
*/
uint32_t max_requests;
/**
* True entropy source
*/
rng_t *entropy;
/**
* HMAC-SHA256
*/
signer_t *hmac;
/**
* Internal state of HMAC-SHA256: key
*/
chunk_t key;
/**
* Internal state of HMAC-SHA256: value
*/
chunk_t value;
/**
* reference count
*/
refcount_t ref;
};
/**
* Update the internal state of the HMAC_DRBG
*/
static bool update(private_ntru_drbg_t *this, chunk_t data)
{
chunk_t ch_00 = chunk_from_chars(0x00);
chunk_t ch_01 = chunk_from_chars(0x01);
if (!this->hmac->set_key(this->hmac, this->key) ||
!this->hmac->get_signature(this->hmac, this->value, NULL) ||
!this->hmac->get_signature(this->hmac, ch_00, NULL) ||
!this->hmac->get_signature(this->hmac, data, this->key.ptr) ||
!this->hmac->set_key(this->hmac, this->key) ||
!this->hmac->get_signature(this->hmac, this->value,
this->value.ptr))
{
return FALSE;
}
if (data.len > 0)
{
if (!this->hmac->set_key(this->hmac, this->key) ||
!this->hmac->get_signature(this->hmac, this->value, NULL) ||
!this->hmac->get_signature(this->hmac, ch_01, NULL) ||
!this->hmac->get_signature(this->hmac, data, this->key.ptr) ||
!this->hmac->set_key(this->hmac, this->key) ||
!this->hmac->get_signature(this->hmac, this->value,
this->value.ptr))
{
return FALSE;
}
}
DBG4(DBG_LIB, "HMAC_DRBG V: %B", &this->value);
DBG4(DBG_LIB, "HMAC_DRBG K: %B", &this->key);
return TRUE;
}
METHOD(ntru_drbg_t, get_strength, uint32_t,
private_ntru_drbg_t *this)
{
return this->strength;
}
METHOD(ntru_drbg_t, reseed, bool,
private_ntru_drbg_t *this)
{
chunk_t seed;
seed = chunk_alloc(this->strength / BITS_PER_BYTE);
DBG2(DBG_LIB, "DRBG requests %u bytes of entropy", seed.len);
if (!this->entropy->get_bytes(this->entropy, seed.len, seed.ptr))
{
chunk_free(&seed);
return FALSE;
}
if (!update(this, seed))
{
chunk_free(&seed);
return FALSE;
}
chunk_clear(&seed);
this->reseed_counter = 1;
return TRUE;
}
METHOD(ntru_drbg_t, generate, bool,
private_ntru_drbg_t *this, uint32_t strength, uint32_t len, uint8_t *out)
{
size_t delta;
chunk_t output;
DBG2(DBG_LIB, "DRBG generates %u pseudorandom bytes", len);
if (!out || len == 0)
{
return FALSE;
}
output = chunk_create(out, len);
if (this->reseed_counter > this->max_requests)
{
if (!reseed(this))
{
return FALSE;
}
}
while (len)
{
if (!this->hmac->get_signature(this->hmac, this->value,
this->value.ptr))
{
return FALSE;
}
delta = min(len, this->value.len);
memcpy(out, this->value.ptr, delta);
len -= delta;
out += delta;
}
DBG4(DBG_LIB, "HMAC_DRBG Out: %B", &output);
if (!update(this, chunk_empty))
{
return FALSE;
}
this->reseed_counter++;
return TRUE;
}
METHOD(ntru_drbg_t, get_ref, ntru_drbg_t*,
private_ntru_drbg_t *this)
{
ref_get(&this->ref);
return &this->public;
}
METHOD(ntru_drbg_t, destroy, void,
private_ntru_drbg_t *this)
{
if (ref_put(&this->ref))
{
this->hmac->destroy(this->hmac);
chunk_clear(&this->key);
chunk_clear(&this->value);
free(this);
}
}
/*
* Described in header.
*/
ntru_drbg_t *ntru_drbg_create(uint32_t strength, chunk_t pers_str,
rng_t *entropy)
{
private_ntru_drbg_t *this;
chunk_t seed;
signer_t *hmac;
size_t entropy_len;
uint32_t max_requests;
if (strength > MAX_STRENGTH_BITS)
{
return NULL;
}
if (strength <= 112)
{
strength = 112;
}
else if (strength <= 128)
{
strength = 128;
}
else if (strength <= 192)
{
strength = 192;
}
else
{
strength = 256;
}
hmac = lib->crypto->create_signer(lib->crypto, AUTH_HMAC_SHA2_256_256);
if (!hmac)
{
DBG1(DBG_LIB, "could not instantiate HMAC-SHA256");
return NULL;
}
max_requests = lib->settings->get_int(lib->settings,
"%s.plugins.ntru.max_drbg_requests",
MAX_DRBG_REQUESTS, lib->ns);
INIT(this,
.public = {
.get_strength = _get_strength,
.reseed = _reseed,
.generate = _generate,
.get_ref = _get_ref,
.destroy = _destroy,
},
.strength = strength,
.entropy = entropy,
.hmac = hmac,
.key = chunk_alloc(hmac->get_key_size(hmac)),
.value = chunk_alloc(hmac->get_block_size(hmac)),
.max_requests = max_requests,
.reseed_counter = 1,
.ref = 1,
);
memset(this->key.ptr, 0x00, this->key.len);
memset(this->value.ptr, 0x01, this->value.len);
entropy_len = (strength + strength/2) / BITS_PER_BYTE;
seed = chunk_alloc(entropy_len + pers_str.len);
DBG2(DBG_LIB, "DRBG requests %u bytes of entropy", entropy_len);
if (!this->entropy->get_bytes(this->entropy, entropy_len, seed.ptr))
{
chunk_free(&seed);
destroy(this);
return NULL;
}
memcpy(seed.ptr + entropy_len, pers_str.ptr, pers_str.len);
DBG4(DBG_LIB, "seed: %B", &seed);
if (!update(this, seed))
{
chunk_free(&seed);
destroy(this);
return NULL;
}
chunk_clear(&seed);
return &this->public;
}
EXPORT_FUNCTION_FOR_TESTS(ntru, ntru_drbg_create);

84
src/libstrongswan/plugins/ntru/ntru_drbg.h
View File

@ -1,84 +0,0 @@
/*
* Copyright (C) 2013 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup ntru_drbg ntru_drbg
* @{ @ingroup ntru_p
*/
#ifndef NTRU_DRBG_H_
#define NTRU_DRBG_H_
typedef struct ntru_drbg_t ntru_drbg_t;
#include <library.h>
/**
* Implements a HMAC Deterministic Random Bit Generator (HMAC_DRBG)
* compliant with NIST SP 800-90A
*/
struct ntru_drbg_t {
/**
* Reseed the instantiated DRBG
*
* @return configured security strength in bits
*/
uint32_t (*get_strength)(ntru_drbg_t *this);
/**
* Reseed the instantiated DRBG
*
* @return TRUE if successful
*/
bool (*reseed)(ntru_drbg_t *this);
/**
* Generate pseudorandom bytes.
* If the maximum number of requests has been reached, reseeding occurs
*
* @param strength requested security strength in bits
* @param len number of octets to generate
* @param out address of output buffer
* @return TRUE if successful
*/
bool (*generate)(ntru_drbg_t *this, uint32_t strength, uint32_t len,
uint8_t *out);
/**
* Get a reference on an ntru_drbg_t object increasing the count by one
*
* @return reference to the ntru_drbg_t object
*/
ntru_drbg_t* (*get_ref)(ntru_drbg_t *this);
/**
* Uninstantiate and destroy the DRBG object
*/
void (*destroy)(ntru_drbg_t *this);
};
/**
* Create and instantiate a new DRBG object.
*
* @param strength security strength in bits
* @param pers_str personalization string
* @param entropy entropy source to use
*/
ntru_drbg_t *ntru_drbg_create(uint32_t strength, chunk_t pers_str,
rng_t *entropy);
#endif /** NTRU_DRBG_H_ @}*/

13
src/libstrongswan/plugins/ntru/ntru_ke.c
View File

@ -14,12 +14,12 @@
*/
#include "ntru_ke.h"
#include "ntru_drbg.h"
#include "ntru_param_set.h"
#include "ntru_private_key.h"
#include "ntru_public_key.h"
#include <crypto/diffie_hellman.h>
#include <crypto/drbgs/drbg.h>
#include <utils/debug.h>
typedef struct private_ntru_ke_t private_ntru_ke_t;
@ -106,7 +106,7 @@ struct private_ntru_ke_t {
/**
* Deterministic Random Bit Generator
*/
ntru_drbg_t *drbg;
drbg_t *drbg;
};
METHOD(diffie_hellman_t, get_my_public_value, bool,
@ -199,8 +199,8 @@ METHOD(diffie_hellman_t, set_other_public_value, bool,
this->shared_secret = chunk_alloc(2 * this->strength / BITS_PER_BYTE);
/* generate the random shared secret */
if (!this->drbg->generate(this->drbg, this->strength,
this->shared_secret.len, this->shared_secret.ptr))
if (!this->drbg->generate(this->drbg, this->shared_secret.len,
this->shared_secret.ptr))
{
DBG1(DBG_LIB, "generation of shared secret failed");
chunk_free(&this->shared_secret);
@ -246,7 +246,7 @@ ntru_ke_t *ntru_ke_create(diffie_hellman_group_t group, chunk_t g, chunk_t p)
const ntru_param_set_id_t *param_sets;
ntru_param_set_id_t param_set_id;
rng_t *entropy;
ntru_drbg_t *drbg;
drbg_t *drbg;
char *parameter_set;
uint32_t strength;
@ -301,7 +301,8 @@ ntru_ke_t *ntru_ke_create(diffie_hellman_group_t group, chunk_t g, chunk_t p)
return NULL;
}
drbg = ntru_drbg_create(strength, chunk_from_str("IKE NTRU-KE"), entropy);
drbg = lib->crypto->create_drbg(lib->crypto, DRBG_HMAC_SHA256, strength,
entropy, chunk_from_str("IKE NTRU-KE"));
if (!drbg)
{
DBG1(DBG_LIB, "could not instantiate DRBG at %u bit security", strength);

12
src/libstrongswan/plugins/ntru/ntru_private_key.c
View File

@ -58,7 +58,7 @@ struct private_ntru_private_key_t {
/**
* Deterministic Random Bit Generator
*/
ntru_drbg_t *drbg;
drbg_t *drbg;
};
@ -640,7 +640,7 @@ static bool ring_inv(uint16_t *a, uint16_t N, uint16_t q, uint16_t *t,
/*
* Described in header.
*/
ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg,
ntru_private_key_t *ntru_private_key_create(drbg_t *drbg,
const ntru_param_set_t *params)
{
private_ntru_private_key_t *this;
@ -671,8 +671,7 @@ ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg,
seed =chunk_alloc(params->sec_strength_len + 8);
/* get random seed for generating trinary F as a list of indices */
if (!drbg->generate(drbg, params->sec_strength_len * BITS_PER_BYTE,
seed.len, seed.ptr))
if (!drbg->generate(drbg, seed.len, seed.ptr))
{
goto err;
}
@ -715,8 +714,7 @@ ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg,
}
/* get random seed for generating trinary g as a list of indices */
if (!drbg->generate(drbg, params->sec_strength_len * BITS_PER_BYTE,
seed.len, seed.ptr))
if (!drbg->generate(drbg, seed.len, seed.ptr))
{
goto err;
}
@ -760,7 +758,7 @@ err:
/*
* Described in header.
*/
ntru_private_key_t *ntru_private_key_create_from_data(ntru_drbg_t *drbg,
ntru_private_key_t *ntru_private_key_create_from_data(drbg_t *drbg,
chunk_t data)
{
private_ntru_private_key_t *this;

6
src/libstrongswan/plugins/ntru/ntru_private_key.h
View File

@ -23,11 +23,11 @@
typedef struct ntru_private_key_t ntru_private_key_t;
#include "ntru_drbg.h"
#include "ntru_param_set.h"
#include "ntru_public_key.h"
#include <library.h>
#include <crypto/drbgs/drbg.h>
/**
* Implements an NTRU encryption public/private key pair
@ -77,7 +77,7 @@ struct ntru_private_key_t {
* @param drbg Digital Random Bit Generator used for key generation
* @param params NTRU encryption parameter set to be used
*/
ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg,
ntru_private_key_t *ntru_private_key_create(drbg_t *drbg,
const ntru_param_set_t *params);
/**
@ -86,7 +86,7 @@ ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg,
* @param drbg Deterministic random bit generator
* @param data Encoded NTRU private key
*/
ntru_private_key_t *ntru_private_key_create_from_data(ntru_drbg_t *drbg,
ntru_private_key_t *ntru_private_key_create_from_data(drbg_t *drbg,
chunk_t data);
#endif /** NTRU_PRIVATE_KEY_H_ @}*/

10
src/libstrongswan/plugins/ntru/ntru_public_key.c
View File

@ -52,7 +52,7 @@ struct private_ntru_public_key_t {
/**
* Deterministic Random Bit Generator
*/
ntru_drbg_t *drbg;
drbg_t *drbg;
};
@ -152,9 +152,7 @@ METHOD(ntru_public_key_t, encrypt, bool,
/* loop until a message representative with proper weight is achieved */
do
{
if (!this->drbg->generate(this->drbg,
this->params->sec_strength_len * BITS_PER_BYTE,
this->params->sec_strength_len, b))
if (!this->drbg->generate(this->drbg, this->params->sec_strength_len, b))
{
goto err;
}
@ -319,7 +317,7 @@ METHOD(ntru_public_key_t, destroy, void,
/*
* Described in header.
*/
ntru_public_key_t *ntru_public_key_create(ntru_drbg_t *drbg,
ntru_public_key_t *ntru_public_key_create(drbg_t *drbg,
const ntru_param_set_t *params,
uint16_t *pubkey)
{
@ -352,7 +350,7 @@ ntru_public_key_t *ntru_public_key_create(ntru_drbg_t *drbg,
/*
* Described in header.
*/
ntru_public_key_t *ntru_public_key_create_from_data(ntru_drbg_t *drbg,
ntru_public_key_t *ntru_public_key_create_from_data(drbg_t *drbg,
chunk_t data)
{
private_ntru_public_key_t *this;

6
src/libstrongswan/plugins/ntru/ntru_public_key.h
View File

@ -24,9 +24,9 @@
typedef struct ntru_public_key_t ntru_public_key_t;
#include "ntru_param_set.h"
#include "ntru_drbg.h"
#include <library.h>
#include <crypto/drbgs/drbg.h>
/**
* Implements an NTRU encryption public key
@ -70,7 +70,7 @@ struct ntru_public_key_t {
* @param params NTRU encryption parameter set to be used
* @param pubkey Coefficients of public key polynomial h
*/
ntru_public_key_t *ntru_public_key_create(ntru_drbg_t *drbg,
ntru_public_key_t *ntru_public_key_create(drbg_t *drbg,
const ntru_param_set_t *params,
uint16_t *pubkey);
@ -80,7 +80,7 @@ ntru_public_key_t *ntru_public_key_create(ntru_drbg_t *drbg,
* @param drbg Deterministic random bit generator
* @param data Encoded NTRU public key
*/
ntru_public_key_t *ntru_public_key_create_from_data(ntru_drbg_t *drbg,
ntru_public_key_t *ntru_public_key_create_from_data(drbg_t *drbg,
chunk_t data);

279
src/libstrongswan/tests/suites/test_ntru.c
View File

@ -15,18 +15,15 @@
#include "test_suite.h"
#include <tests/utils/test_rng.h>
#include <utils/test.h>
#include <crypto/xofs/xof.h>
#include <plugins/ntru/ntru_drbg.h>
#include <crypto/drbgs/drbg.h>
#include <crypto/rngs/rng_tester.h>
#include <plugins/ntru/ntru_trits.h>
#include <plugins/ntru/ntru_poly.h>
#include <plugins/ntru/ntru_param_set.h>
#include <plugins/ntru/ntru_private_key.h>
IMPORT_FUNCTION_FOR_TESTS(ntru, ntru_drbg_create, ntru_drbg_t*,
uint32_t strength, chunk_t pers_str, rng_t *entropy)
IMPORT_FUNCTION_FOR_TESTS(ntru, ntru_trits_create, ntru_trits_t*,
size_t len, ext_out_function_t alg, chunk_t seed)
@ -44,13 +41,13 @@ IMPORT_FUNCTION_FOR_TESTS(ntru, ntru_param_set_get_by_id, ntru_param_set_t* ,
ntru_param_set_id_t id)
IMPORT_FUNCTION_FOR_TESTS(ntru, ntru_private_key_create, ntru_private_key_t*,
ntru_drbg_t *drbg, ntru_param_set_t *params)
drbg_t *drbg, ntru_param_set_t *params)
IMPORT_FUNCTION_FOR_TESTS(ntru, ntru_private_key_create_from_data, ntru_private_key_t*,
ntru_drbg_t *drbg, chunk_t data)
drbg_t *drbg, chunk_t data)
IMPORT_FUNCTION_FOR_TESTS(ntru, ntru_public_key_create_from_data, ntru_public_key_t*,
ntru_drbg_t *drbg, chunk_t data)
drbg_t *drbg, chunk_t data)
/**
* NTRU parameter sets to test
@ -72,252 +69,6 @@ char *parameter_sets[] = {
"x9_98_speed", "x9_98_bandwidth", "x9_98_balance", "optimum"
};
typedef struct {
uint32_t requested;
uint32_t standard;
}strength_t;
strength_t strengths[] = {
{ 80, 112 },
{ 112, 112 },
{ 120, 128 },
{ 128, 128 },
{ 150, 192 },
{ 192, 192 },
{ 200, 256 },
{ 256, 256 },
{ 512, 0 }
};
START_TEST(test_ntru_drbg_strength)
{
ntru_drbg_t *drbg;
rng_t *entropy;
entropy = lib->crypto->create_rng(lib->crypto, RNG_STRONG);
ck_assert(entropy != NULL);
drbg = TEST_FUNCTION(ntru, ntru_drbg_create, strengths[_i].requested,
chunk_empty, entropy);
if (strengths[_i].standard)
{
ck_assert(drbg != NULL);
ck_assert(drbg->get_strength(drbg) == strengths[_i].standard);
drbg->destroy(drbg);
}
else
{
ck_assert(drbg == NULL);
}
entropy->destroy(entropy);
}
END_TEST
typedef struct {
chunk_t pers_str;
chunk_t entropy;
chunk_t out;
} drbg_test_t;
/**
* NIST SP 800-90A Deterministic Random Generator Validation System (DRBGVS)
*/
drbg_test_t drbg_tests[] = {
/* SHA-256 test case 1 - count 0 */
{ { NULL, 0 },
chunk_from_chars(0x06, 0x03, 0x2c, 0xd5, 0xee, 0xd3, 0x3f, 0x39,
0x26, 0x5f, 0x49, 0xec, 0xb1, 0x42, 0xc5, 0x11,
0xda, 0x9a, 0xff, 0x2a, 0xf7, 0x12, 0x03, 0xbf,
0xfa, 0xf3, 0x4a, 0x9c, 0xa5, 0xbd, 0x9c, 0x0d,
0x0e, 0x66, 0xf7, 0x1e, 0xdc, 0x43, 0xe4, 0x2a,
0x45, 0xad, 0x3c, 0x6f, 0xc6, 0xcd, 0xc4, 0xdf,
0x01, 0x92, 0x0a, 0x4e, 0x66, 0x9e, 0xd3, 0xa8,
0x5a, 0xe8, 0xa3, 0x3b, 0x35, 0xa7, 0x4a, 0xd7,
0xfb, 0x2a, 0x6b, 0xb4, 0xcf, 0x39, 0x5c, 0xe0,
0x03, 0x34, 0xa9, 0xc9, 0xa5, 0xa5, 0xd5, 0x52),
chunk_from_chars(0x76, 0xfc, 0x79, 0xfe, 0x9b, 0x50, 0xbe, 0xcc,
0xc9, 0x91, 0xa1, 0x1b, 0x56, 0x35, 0x78, 0x3a,
0x83, 0x53, 0x6a, 0xdd, 0x03, 0xc1, 0x57, 0xfb,
0x30, 0x64, 0x5e, 0x61, 0x1c, 0x28, 0x98, 0xbb,
0x2b, 0x1b, 0xc2, 0x15, 0x00, 0x02, 0x09, 0x20,
0x8c, 0xd5, 0x06, 0xcb, 0x28, 0xda, 0x2a, 0x51,
0xbd, 0xb0, 0x38, 0x26, 0xaa, 0xf2, 0xbd, 0x23,
0x35, 0xd5, 0x76, 0xd5, 0x19, 0x16, 0x08, 0x42,
0xe7, 0x15, 0x8a, 0xd0, 0x94, 0x9d, 0x1a, 0x9e,
0xc3, 0xe6, 0x6e, 0xa1, 0xb1, 0xa0, 0x64, 0xb0,
0x05, 0xde, 0x91, 0x4e, 0xac, 0x2e, 0x9d, 0x4f,
0x2d, 0x72, 0xa8, 0x61, 0x6a, 0x80, 0x22, 0x54,
0x22, 0x91, 0x82, 0x50, 0xff, 0x66, 0xa4, 0x1b,
0xd2, 0xf8, 0x64, 0xa6, 0xa3, 0x8c, 0xc5, 0xb6,
0x49, 0x9d, 0xc4, 0x3f, 0x7f, 0x2b, 0xd0, 0x9e,
0x1e, 0x0f, 0x8f, 0x58, 0x85, 0x93, 0x51, 0x24)
},
/* SHA-256 test case 3 - count 0 */
{ chunk_from_chars(0xf2, 0xe5, 0x8f, 0xe6, 0x0a, 0x3a, 0xfc, 0x59,
0xda, 0xd3, 0x75, 0x95, 0x41, 0x5f, 0xfd, 0x31,
0x8c, 0xcf, 0x69, 0xd6, 0x77, 0x80, 0xf6, 0xfa,
0x07, 0x97, 0xdc, 0x9a, 0xa4, 0x3e, 0x14, 0x4c),
chunk_from_chars(0xfa, 0x0e, 0xe1, 0xfe, 0x39, 0xc7, 0xc3, 0x90,
0xaa, 0x94, 0x15, 0x9d, 0x0d, 0xe9, 0x75, 0x64,
0x34, 0x2b, 0x59, 0x17, 0x77, 0xf3, 0xe5, 0xf6,
0xa4, 0xba, 0x2a, 0xea, 0x34, 0x2e, 0xc8, 0x40,
0xdd, 0x08, 0x20, 0x65, 0x5c, 0xb2, 0xff, 0xdb,
0x0d, 0xa9, 0xe9, 0x31, 0x0a, 0x67, 0xc9, 0xe5,
0xe0, 0x62, 0x9b, 0x6d, 0x79, 0x75, 0xdd, 0xfa,
0x96, 0xa3, 0x99, 0x64, 0x87, 0x40, 0xe6, 0x0f,
0x1f, 0x95, 0x57, 0xdc, 0x58, 0xb3, 0xd7, 0x41,
0x5f, 0x9b, 0xa9, 0xd4, 0xdb, 0xb5, 0x01, 0xf6),
chunk_from_chars(0xf9, 0x2d, 0x4c, 0xf9, 0x9a, 0x53, 0x5b, 0x20,
0x22, 0x2a, 0x52, 0xa6, 0x8d, 0xb0, 0x4c, 0x5a,
0xf6, 0xf5, 0xff, 0xc7, 0xb6, 0x6a, 0x47, 0x3a,
0x37, 0xa2, 0x56, 0xbd, 0x8d, 0x29, 0x8f, 0x9b,
0x4a, 0xa4, 0xaf, 0x7e, 0x8d, 0x18, 0x1e, 0x02,
0x36, 0x79, 0x03, 0xf9, 0x3b, 0xdb, 0x74, 0x4c,
0x6c, 0x2f, 0x3f, 0x34, 0x72, 0x62, 0x6b, 0x40,
0xce, 0x9b, 0xd6, 0xa7, 0x0e, 0x7b, 0x8f, 0x93,
0x99, 0x2a, 0x16, 0xa7, 0x6f, 0xab, 0x6b, 0x5f,
0x16, 0x25, 0x68, 0xe0, 0x8e, 0xe6, 0xc3, 0xe8,
0x04, 0xae, 0xfd, 0x95, 0x2d, 0xdd, 0x3a, 0xcb,
0x79, 0x1c, 0x50, 0xf2, 0xad, 0x69, 0xe9, 0xa0,
0x40, 0x28, 0xa0, 0x6a, 0x9c, 0x01, 0xd3, 0xa6,
0x2a, 0xca, 0x2a, 0xaf, 0x6e, 0xfe, 0x69, 0xed,
0x97, 0xa0, 0x16, 0x21, 0x3a, 0x2d, 0xd6, 0x42,
0xb4, 0x88, 0x67, 0x64, 0x07, 0x2d, 0x9c, 0xbe)
},
/* SHA-256 test case 5 - count 0 */
{ { NULL, 0 },
chunk_from_chars(0xff, 0x0c, 0xdd, 0x55, 0x5c, 0x60, 0x46, 0x47,
0x60, 0xb2, 0x89, 0xb7, 0xbc, 0x1f, 0x81, 0x1a,
0x41, 0xff, 0xf7, 0x2d, 0xe5, 0x90, 0x83, 0x85,
0x8c, 0x02, 0x0a, 0x10, 0x53, 0xbd, 0xc7, 0x4a,
0x7b, 0xc0, 0x99, 0x28, 0x5a, 0xd5, 0x62, 0x19,
0x93, 0xb6, 0x39, 0xc4, 0xa9, 0x4c, 0x37, 0x6b,
0x14, 0xfc, 0x6c, 0x9b, 0x17, 0x8d, 0xb6, 0x44,
0xa8, 0xcd, 0x71, 0x30, 0xa4, 0xcf, 0x05, 0x16,
0x78, 0xc8, 0xf4, 0xfa, 0x8f, 0x24, 0xc2, 0x7b,
0x0a, 0x53, 0x13, 0x38, 0xa5, 0xce, 0x85, 0x89),
chunk_from_chars(0x2f, 0x26, 0x20, 0x34, 0x7b, 0xdd, 0xca, 0xa2,
0x94, 0x36, 0x85, 0x34, 0x6b, 0xbf, 0x31, 0xc4,
0x40, 0x81, 0xf8, 0x66, 0x5f, 0x3d, 0xdb, 0x2b,
0x42, 0xae, 0x14, 0x16, 0xa7, 0x4c, 0x4b, 0x77,
0xfa, 0xb3, 0xfa, 0x19, 0xae, 0xec, 0xc5, 0x47,
0xe7, 0x6c, 0x8c, 0xbe, 0x6a, 0xd1, 0xf1, 0x00,
0xa3, 0xfc, 0x8b, 0x2c, 0xe2, 0xa1, 0xea, 0x3a,
0x3d, 0xd7, 0xcf, 0xad, 0x46, 0xc1, 0xb2, 0x78,
0x30, 0xb9, 0x40, 0xba, 0x18, 0xd0, 0x9e, 0x9b,
0x7f, 0xa9, 0x02, 0xbb, 0x76, 0x06, 0x69, 0xb1,
0x73, 0x5c, 0xc7, 0xb7, 0xbd, 0x39, 0x05, 0x2d,
0xa7, 0xf2, 0x62, 0x6f, 0xa8, 0x70, 0x00, 0xcf,
0xfa, 0xda, 0x41, 0x00, 0x19, 0xd0, 0x53, 0x38,
0x6a, 0xd8, 0x08, 0xbd, 0x3c, 0x0c, 0xfc, 0xf5,
0x6b, 0x91, 0x87, 0x9e, 0xb8, 0xd3, 0xf9, 0x32,
0xee, 0x2d, 0x18, 0x5e, 0x54, 0xf3, 0x1b, 0x74)
},
/* SHA-256 test case 7 - count 0 */
{ chunk_from_chars(0x40, 0x93, 0x3f, 0xdc, 0xce, 0x41, 0x59, 0xb0,
0x95, 0x51, 0x11, 0xf8, 0x44, 0x47, 0x1b, 0x0d,
0xb8, 0x5b, 0x73, 0xbd, 0xd2, 0xb7, 0x8c, 0x46,
0x8d, 0xd3, 0x9e, 0x2a, 0x9b, 0x29, 0xae, 0xf2),
chunk_from_chars(0x28, 0xba, 0x1a, 0x66, 0x16, 0x32, 0xef, 0xc8,
0xec, 0xce, 0xd5, 0xf5, 0x1b, 0x79, 0x13, 0x00,
0xfb, 0x3b, 0x55, 0xb0, 0x5d, 0x04, 0x17, 0x08,
0x63, 0x8d, 0xe4, 0xbe, 0xb7, 0x57, 0xa9, 0xe5,
0x76, 0x82, 0x87, 0x96, 0xaf, 0xf0, 0x7f, 0x55,
0x79, 0x5c, 0xb5, 0x47, 0x13, 0xc7, 0x7e, 0xd4,
0xa5, 0xf5, 0x42, 0xb0, 0x4a, 0xaa, 0x5d, 0xbc,
0x93, 0x1e, 0x47, 0x01, 0x9f, 0xeb, 0x38, 0x96,
0x26, 0x16, 0xc5, 0x7a, 0xf0, 0x9b, 0x7c, 0x1d,
0xf8, 0x3f, 0x2b, 0x86, 0x0f, 0xf7, 0x65, 0x86),
chunk_from_chars(0x65, 0xe5, 0xaa, 0x47, 0xb3, 0x85, 0xf1, 0xea,
0x42, 0xb2, 0x31, 0xb9, 0xfe, 0x74, 0x42, 0x53,
0xb8, 0x59, 0x88, 0x59, 0xd7, 0x01, 0x1e, 0x52,
0x5f, 0x5a, 0x2a, 0x1a, 0xd3, 0x2a, 0x97, 0x2a,
0x85, 0x08, 0x02, 0xc6, 0x0a, 0x2b, 0xe1, 0x9b,
0xe2, 0x70, 0x06, 0x3a, 0x3c, 0xfb, 0xea, 0xae,
0x95, 0x4f, 0x10, 0xb1, 0x22, 0x35, 0x2d, 0xe6,
0xa0, 0x8a, 0xc4, 0x10, 0xe0, 0x99, 0x16, 0x53,
0xaa, 0xb2, 0x71, 0xb3, 0x60, 0xfe, 0x91, 0x91,
0xcf, 0x5a, 0xdd, 0xcc, 0xcc, 0xed, 0x8c, 0x4a,
0xcf, 0xb6, 0x14, 0x57, 0x04, 0x99, 0x92, 0x98,
0x8f, 0xd7, 0xa9, 0xac, 0xca, 0x1f, 0x1b, 0xca,
0x35, 0xf1, 0x47, 0x58, 0x13, 0x69, 0x4a, 0x39,
0x98, 0x8e, 0x5f, 0xac, 0x9f, 0x4a, 0xc0, 0x57,
0x22, 0x86, 0xbc, 0x46, 0x25, 0x82, 0xad, 0x0a,
0xf7, 0x8a, 0xb3, 0xb8, 0x5e, 0xc1, 0x7a, 0x25)
}
};
START_TEST(test_ntru_drbg)
{
ntru_drbg_t *drbg;
rng_t *entropy;
chunk_t out;
out = chunk_alloc(128);
entropy = test_rng_create(drbg_tests[_i].entropy);
drbg = TEST_FUNCTION(ntru, ntru_drbg_create, 256, drbg_tests[_i].pers_str,
entropy);
ck_assert(drbg != NULL);
ck_assert(drbg->reseed(drbg));
ck_assert(drbg->generate(drbg, 256, 128, out.ptr));
ck_assert(drbg->generate(drbg, 256, 128, out.ptr));
ck_assert(chunk_equals(out, drbg_tests[_i].out));
drbg->destroy(drbg);
entropy->destroy(entropy);
chunk_free(&out);
}
END_TEST
START_TEST(test_ntru_drbg_reseed)
{
ntru_drbg_t *drbg;
rng_t *entropy;
chunk_t out;
lib->settings->set_int(lib->settings,
"libstrongswan.plugins.ntru.max_drbg_requests", 2);
out = chunk_alloc(128);
entropy = test_rng_create(drbg_tests[0].entropy);
drbg = TEST_FUNCTION(ntru, ntru_drbg_create, 256, chunk_empty, entropy);
/* bad output parameters */
ck_assert(!drbg->generate(drbg, 256, 0, out.ptr));
ck_assert(!drbg->generate(drbg, 256, 128, NULL));
/* no reseeding occurs */
ck_assert(drbg->generate(drbg, 256, 128, out.ptr));
ck_assert(drbg->generate(drbg, 256, 128, out.ptr));
/* consuming remaining entropy */
ck_assert(entropy->get_bytes(entropy, 32, out.ptr));
/* no entropy available for automatic reseeding */
ck_assert(!drbg->generate(drbg, 256, 128, out.ptr));
drbg->destroy(drbg);
/* no entropy available for DRBG instantiation */
drbg = TEST_FUNCTION(ntru, ntru_drbg_create, 256, chunk_empty, entropy);
ck_assert(drbg == NULL);
entropy->destroy(entropy);
/* one automatic reseeding occurs */
entropy = test_rng_create(drbg_tests[0].entropy);
drbg = TEST_FUNCTION(ntru, ntru_drbg_create, 256, chunk_empty, entropy);
ck_assert(drbg->generate(drbg, 256, 128, out.ptr));
ck_assert(drbg->generate(drbg, 256, 128, out.ptr));
ck_assert(drbg->generate(drbg, 256, 128, out.ptr));
/* no entropy left */
ck_assert(!entropy->get_bytes(entropy, 32, out.ptr));
drbg->destroy(drbg);
entropy->destroy(entropy);
chunk_free(&out);
lib->settings->set_int(lib->settings,
"libstrongswan.plugins.ntru.max_drbg_requests", 2000);
}
END_TEST
typedef struct {
uint8_t c_bits;
uint16_t N;
@ -954,7 +705,7 @@ privkey_test_t privkey_tests[] = {
START_TEST(test_ntru_privkey)
{
rng_t *entropy;
ntru_drbg_t *drbg;
drbg_t *drbg;
ntru_private_key_t *privkey;
ntru_public_key_t *pubkey;
ntru_param_set_t *params;
@ -964,9 +715,9 @@ START_TEST(test_ntru_privkey)
params = TEST_FUNCTION(ntru, ntru_param_set_get_by_id,
privkey_tests[_i].id);
strength = params->sec_strength_len * BITS_PER_BYTE;
entropy = test_rng_create(privkey_tests[_i].entropy);
drbg = TEST_FUNCTION(ntru, ntru_drbg_create, strength,
chunk_from_str("IKE NTRU-KE"), entropy);
entropy = rng_tester_create(privkey_tests[_i].entropy);
drbg = lib->crypto->create_drbg(lib->crypto, DRBG_HMAC_SHA256, strength,
entropy, chunk_from_str("IKE NTRU-KE"));
ck_assert(drbg != NULL);
privkey = TEST_FUNCTION(ntru, ntru_private_key_create, drbg, params);
@ -1234,18 +985,6 @@ Suite *ntru_suite_create()
s = suite_create("ntru");
tc = tcase_create("drbg_strength");
tcase_add_loop_test(tc, test_ntru_drbg_strength, 0, countof(strengths));
suite_add_tcase(s, tc);
tc = tcase_create("drbg");
tcase_add_loop_test(tc, test_ntru_drbg, 0, countof(drbg_tests));
suite_add_tcase(s, tc);
tc = tcase_create("drgb_reseed");
tcase_add_test(tc, test_ntru_drbg_reseed);
suite_add_tcase(s, tc);
tc = tcase_create("trits");
tcase_add_loop_test(tc, test_ntru_trits, 0, countof(trits_tests));
suite_add_tcase(s, tc);