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Commit 39ea0d27 authored by Niels Möller's avatar Niels Möller
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New struct dsa_params. Use for dsa_sign and dsa_verify. Updated users.

parent 5c232aa8
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ChangeLog
View file @ 39ea0d27
2014-03-26 Niels Möller <nisse@lysator.liu.se>
* dsa.h (struct dsa_params): New struct.
* dsa-sign.c (dsa_sign): Use struct dsa_params, with key as a
separate mpz_t.
* dsa-verify.c (dsa_verify): Likewise.
* dsa-sha1-verify.c (dsa_sha1_verify_digest, dsa_sha1_verify): Use
dsa_verify, cast the struct dsa_public_key * input to a struct
dsa_params *
* dsa-sha256-verify.c (dsa_sha256_verify_digest)
(dsa_sha256_verify): Likewise.
* dsa-sha1-sign.c (dsa_sha1_sign_digest, dsa_sha1_sign): Likewise
use dsa_sign, with a cast from struct dsa_public_key * to struct
dsa_params *.
* dsa-sha256-sign.c (dsa_sha256_sign_digest, dsa_sha256_sign):
Likewise.
* testsuite/testutils.c (test_dsa_verify): Use struct dsa_params.
(test_dsa_key): Likewise.
* testsuite/dsa-test.c (test_main): Adapt to test_dsa_key and
test_dsa_verify changes.
* testsuite/dsa-keygen-test.c (test_main): Adapt to
test_dsa_key change.
* testsuite/testutils.c (test_dsa_sign): #if out, currently
unused.
......
dsa-sha1-sign.c
View file @ 39ea0d27
......@@ -36,7 +36,8 @@ dsa_sha1_sign_digest(const struct dsa_public_key *pub,
const uint8_t *digest,
struct dsa_signature *signature)
{
return dsa_sign(pub, key, random_ctx, random,
return dsa_sign((const struct dsa_params *) pub, key->x,
random_ctx, random,
SHA1_DIGEST_SIZE, digest, signature);
}
......@@ -50,7 +51,8 @@ dsa_sha1_sign(const struct dsa_public_key *pub,
{
uint8_t digest[SHA1_DIGEST_SIZE];
sha1_digest(hash, sizeof(digest), digest);
return dsa_sign(pub, key, random_ctx, random,
return dsa_sign((const struct dsa_params *) pub, key->x,
random_ctx, random,
sizeof(digest), digest, signature);
}
dsa-sha1-verify.c
View file @ 39ea0d27
......@@ -27,8 +27,6 @@
# include "config.h"
#endif
#include <stdlib.h>
#include "dsa.h"
int
......@@ -36,7 +34,8 @@ dsa_sha1_verify_digest(const struct dsa_public_key *key,
const uint8_t *digest,
const struct dsa_signature *signature)
{
return dsa_verify(key, SHA1_DIGEST_SIZE, digest, signature);
return dsa_verify((const struct dsa_params *) key, key->y,
SHA1_DIGEST_SIZE, digest, signature);
}
int
......@@ -47,5 +46,6 @@ dsa_sha1_verify(const struct dsa_public_key *key,
uint8_t digest[SHA1_DIGEST_SIZE];
sha1_digest(hash, sizeof(digest), digest);
return dsa_verify(key, sizeof(digest), digest, signature);
return dsa_verify((const struct dsa_params *) key, key->y,
sizeof(digest), digest, signature);
}
dsa-sha256-sign.c
View file @ 39ea0d27
......@@ -36,7 +36,8 @@ dsa_sha256_sign_digest(const struct dsa_public_key *pub,
const uint8_t *digest,
struct dsa_signature *signature)
{
return dsa_sign(pub, key, random_ctx, random,
return dsa_sign((const struct dsa_params *) pub, key->x,
random_ctx, random,
SHA256_DIGEST_SIZE, digest, signature);
}
......@@ -50,6 +51,7 @@ dsa_sha256_sign(const struct dsa_public_key *pub,
uint8_t digest[SHA256_DIGEST_SIZE];
sha256_digest(hash, sizeof(digest), digest);
return dsa_sign(pub, key, random_ctx, random,
return dsa_sign((const struct dsa_params *) pub, key->x,
random_ctx, random,
sizeof(digest), digest, signature);
}
dsa-sha256-verify.c
View file @ 39ea0d27
......@@ -27,8 +27,6 @@
# include "config.h"
#endif
#include <stdlib.h>
#include "dsa.h"
int
......@@ -36,7 +34,8 @@ dsa_sha256_verify_digest(const struct dsa_public_key *key,
const uint8_t *digest,
const struct dsa_signature *signature)
{
return dsa_verify(key, SHA256_DIGEST_SIZE, digest, signature);
return dsa_verify((const struct dsa_params *) key, key->y,
SHA256_DIGEST_SIZE, digest, signature);
}
int
......@@ -47,5 +46,6 @@ dsa_sha256_verify(const struct dsa_public_key *key,
uint8_t digest[SHA256_DIGEST_SIZE];
sha256_digest(hash, sizeof(digest), digest);
return dsa_verify(key, sizeof(digest), digest, signature);
return dsa_verify((const struct dsa_params *) key, key->y,
sizeof(digest), digest, signature);
}
dsa-sign.c
View file @ 39ea0d27
......@@ -36,8 +36,8 @@
int
dsa_sign(const struct dsa_public_key *pub,
const struct dsa_private_key *key,
dsa_sign(const struct dsa_params *params,
const mpz_t x,
void *random_ctx, nettle_random_func *random,
size_t digest_size,
const uint8_t *digest,
......@@ -49,7 +49,7 @@ dsa_sign(const struct dsa_public_key *pub,
int res;
/* Select k, 0<k<q, randomly */
mpz_init_set(tmp, pub->q);
mpz_init_set(tmp, params->q);
mpz_sub_ui(tmp, tmp, 1);
mpz_init(k);
......@@ -57,22 +57,22 @@ dsa_sign(const struct dsa_public_key *pub,
mpz_add_ui(k, k, 1);
/* Compute r = (g^k (mod p)) (mod q) */
mpz_powm(tmp, pub->g, k, pub->p);
mpz_fdiv_r(signature->r, tmp, pub->q);
mpz_powm(tmp, params->g, k, params->p);
mpz_fdiv_r(signature->r, tmp, params->q);
/* Compute hash */
mpz_init(h);
_dsa_hash (h, mpz_sizeinbase(pub->q, 2), digest_size, digest);
_dsa_hash (h, mpz_sizeinbase(params->q, 2), digest_size, digest);
/* Compute k^-1 (mod q) */
if (mpz_invert(k, k, pub->q))
if (mpz_invert(k, k, params->q))
{
/* Compute signature s = k^-1 (h + xr) (mod q) */
mpz_mul(tmp, signature->r, key->x);
mpz_fdiv_r(tmp, tmp, pub->q);
mpz_mul(tmp, signature->r, x);
mpz_fdiv_r(tmp, tmp, params->q);
mpz_add(tmp, tmp, h);
mpz_mul(tmp, tmp, k);
mpz_fdiv_r(signature->s, tmp, pub->q);
mpz_fdiv_r(signature->s, tmp, params->q);
res = 1;
}
else
......
dsa-verify.c
View file @ 39ea0d27
......@@ -34,7 +34,8 @@
#include "bignum.h"
int
dsa_verify(const struct dsa_public_key *key,
dsa_verify(const struct dsa_params *params,
const mpz_t y,
size_t digest_size,
const uint8_t *digest,
const struct dsa_signature *signature)
......@@ -46,10 +47,10 @@ dsa_verify(const struct dsa_public_key *key,
int res;
/* Check that r and s are in the proper range */
if (mpz_sgn(signature->r) <= 0 || mpz_cmp(signature->r, key->q) >= 0)
if (mpz_sgn(signature->r) <= 0 || mpz_cmp(signature->r, params->q) >= 0)
return 0;
if (mpz_sgn(signature->s) <= 0 || mpz_cmp(signature->s, key->q) >= 0)
if (mpz_sgn(signature->s) <= 0 || mpz_cmp(signature->s, params->q) >= 0)
return 0;
mpz_init(w);
......@@ -58,7 +59,7 @@ dsa_verify(const struct dsa_public_key *key,
/* NOTE: In gmp-2, mpz_invert sometimes generates negative inverses,
* so we need gmp-3 or better. */
if (!mpz_invert(w, signature->s, key->q))
if (!mpz_invert(w, signature->s, params->q))
{
mpz_clear(w);
return 0;
......@@ -68,25 +69,25 @@ dsa_verify(const struct dsa_public_key *key,
mpz_init(v);
/* The message digest */
_dsa_hash (tmp, mpz_sizeinbase (key->q, 2), digest_size, digest);
_dsa_hash (tmp, mpz_sizeinbase (params->q, 2), digest_size, digest);
/* v = g^{w * h (mod q)} (mod p) */
mpz_mul(tmp, tmp, w);
mpz_fdiv_r(tmp, tmp, key->q);
mpz_fdiv_r(tmp, tmp, params->q);
mpz_powm(v, key->g, tmp, key->p);
mpz_powm(v, params->g, tmp, params->p);
/* y^{w * r (mod q) } (mod p) */
mpz_mul(tmp, signature->r, w);
mpz_fdiv_r(tmp, tmp, key->q);
mpz_fdiv_r(tmp, tmp, params->q);
mpz_powm(tmp, key->y, tmp, key->p);
mpz_powm(tmp, y, tmp, params->p);
/* v = (g^{w * h} * y^{w * r} (mod p) ) (mod q) */
mpz_mul(v, v, tmp);
mpz_fdiv_r(v, v, key->p);
mpz_fdiv_r(v, v, params->p);
mpz_fdiv_r(v, v, key->q);
mpz_fdiv_r(v, v, params->q);
res = !mpz_cmp(v, signature->r);
......
dsa.h
View file @ 39ea0d27
......@@ -5,7 +5,7 @@
/* nettle, low-level cryptographics library
*
* Copyright (C) 2002 Niels Möller
* Copyright (C) 2002, 2013, 2014 Niels Möller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
......@@ -66,6 +66,7 @@ extern "C" {
#define dsa_openssl_private_key_from_der nettle_openssl_provate_key_from_der
#define _dsa_hash _nettle_dsa_hash
/* For FIPS approved parameters */
#define DSA_SHA1_MIN_P_BITS 512
#define DSA_SHA1_Q_OCTETS 20
#define DSA_SHA1_Q_BITS 160
......@@ -73,7 +74,19 @@ extern "C" {
#define DSA_SHA256_MIN_P_BITS 1024
#define DSA_SHA256_Q_OCTETS 32
#define DSA_SHA256_Q_BITS 256
struct dsa_params
{
/* Modulo */
mpz_t p;
/* Group order */
mpz_t q;
/* Generator */
mpz_t g;
};
struct dsa_public_key
{
/* Modulo */
......@@ -173,15 +186,16 @@ dsa_sha256_verify(const struct dsa_public_key *key,
const struct dsa_signature *signature);
int
dsa_sign(const struct dsa_public_key *pub,
const struct dsa_private_key *key,
dsa_sign(const struct dsa_params *params,
const mpz_t x,
void *random_ctx, nettle_random_func *random,
size_t digest_size,
const uint8_t *digest,
struct dsa_signature *signature);
int
dsa_verify(const struct dsa_public_key *key,
dsa_verify(const struct dsa_params *params,
const mpz_t y,
size_t digest_size,
const uint8_t *digest,
const struct dsa_signature *signature);
......
testsuite/dsa-keygen-test.c
View file @ 39ea0d27
......@@ -13,7 +13,8 @@ test_main(void)
{
struct dsa_public_key pub;
struct dsa_private_key key;
struct dsa_params *params;
struct knuth_lfib_ctx lfib;
dsa_private_key_init(&key);
......@@ -21,13 +22,14 @@ test_main(void)
knuth_lfib_init(&lfib, 13);
params = (struct dsa_params *) &pub;
ASSERT (dsa_generate_keypair(&pub, &key,
&lfib,
(nettle_random_func *) knuth_lfib_random,
NULL, verbose ? progress : NULL,
1024, 160));
test_dsa_key(&pub, &key, 160);
test_dsa_key(params, pub.y, key.x, 160);
test_dsa160(&pub, &key, NULL);
ASSERT (dsa_generate_keypair(&pub, &key,
......@@ -36,7 +38,7 @@ test_main(void)
NULL, verbose ? progress : NULL,
2048, 256));
test_dsa_key(&pub, &key, 256);
test_dsa_key(params, pub.y, key.x, 256);
test_dsa256(&pub, &key, NULL);
ASSERT (dsa_generate_keypair(&pub, &key,
......@@ -45,7 +47,7 @@ test_main(void)
NULL, verbose ? progress : NULL,
2048, 224));
test_dsa_key(&pub, &key, 224);
test_dsa_key(params, pub.y, key.x, 224);
test_dsa256(&pub, &key, NULL);
dsa_public_key_clear(&pub);
......
testsuite/dsa-test.c
View file @ 39ea0d27
......@@ -6,7 +6,8 @@ test_main(void)
struct dsa_public_key pub;
struct dsa_private_key key;
struct dsa_signature signature;
struct dsa_params *params = (struct dsa_params *) &pub;
dsa_public_key_init(&pub);
dsa_private_key_init(&key);
dsa_signature_init(&signature);
......@@ -37,7 +38,7 @@ test_main(void)
mpz_set_str(key.x,
"56c6efaf878d06eef21dc070fab71da6ec1e30a6", 16);
test_dsa_key(&pub, &key, 160);
test_dsa_key(params, pub.y, key.x, 160);
mpz_set_str(signature.r, "180342f8d4fb5bd0311ebf205bdee6e556014eaf", 16);
mpz_set_str(signature.s, "392dc6566b2735531a8460966171464ef7ddfe12", 16);
......@@ -87,7 +88,7 @@ test_main(void)
"39f84f88569da55c6bee7e18175b539ea9b7ee24fabd85a7"
"1fa8c93b7181545b", 16);
test_dsa_key(&pub, &key, 256);
test_dsa_key(params, pub.y, key.x, 256);
mpz_set_str(signature.r,
"03fe95c9dbbe1be019d7914e45c37c70"
......@@ -127,7 +128,7 @@ test_main(void)
mpz_set_str(signature.r, "50ed0e810e3f1c7cb6ac62332058448bd8b284c0", 16);
mpz_set_str(signature.s, "c6aded17216b46b7e4b6f2a97c1ad7cc3da83fde", 16);
test_dsa_verify(&pub, &nettle_sha1,
test_dsa_verify(params, pub.y, &nettle_sha1,
SHEX("3b46736d559bd4e0c2c1b2553a33ad3c6cf23cac998d3d0c"
"0e8fa4b19bca06f2f386db2dcff9dca4f40ad8f561ffc308"
"b46c5f31a7735b5fa7e0f9e6cb512e63d7eea05538d66a75"
......@@ -146,7 +147,7 @@ test_main(void)
mpz_set_str(signature.r, "a26c00b5750a2d27fe7435b93476b35438b4d8ab", 16);
mpz_set_str(signature.s, "61c9bfcb2938755afa7dad1d1e07c6288617bf70", 16);
test_dsa_verify(&pub, &nettle_sha1,
test_dsa_verify(params, pub.y, &nettle_sha1,
SHEX("d2bcb53b044b3e2e4b61ba2f91c0995fb83a6a97525e6644"
"1a3b489d9594238bc740bdeea0f718a769c977e2de003877"
"b5d7dc25b182ae533db33e78f2c3ff0645f2137abc137d4e"
......@@ -180,7 +181,7 @@ test_main(void)
"7011f2285f794557", 16);
mpz_set_str(signature.r, "afee719e7f848b54349ccc3b4fb26065833a4d8e", 16);
mpz_set_str(signature.s, "734efe992256f31325e749bc32a24a1f957b3a1b", 16);
test_dsa_verify(&pub, &nettle_sha224,
test_dsa_verify(params, pub.y, &nettle_sha224,
SHEX("fb2128052509488cad0745ed3e6312850dd96ddaf791f1e6"
"24e22a6b9beaa65319c325c78ef59cacba0ccfa722259f24"
"f92c17b77a8f6d8e97c93d880d2d8dbbbedcf6acefa06b0e"
......@@ -214,7 +215,7 @@ test_main(void)
"85183889205591e8", 16);
mpz_set_str(signature.r, "76683a085d6742eadf95a61af75f881276cfd26a", 16);
mpz_set_str(signature.s, "3b9da7f9926eaaad0bebd4845c67fcdb64d12453", 16);
test_dsa_verify(&pub, &nettle_sha256,
test_dsa_verify(params, pub.y, &nettle_sha256,
SHEX("812172f09cbae62517804885754125fc6066e9a902f9db20"
"41eeddd7e8da67e4a2e65d0029c45ecacea6002f9540eb10"
"04c883a8f900fd84a98b5c449ac49c56f3a91d8bed3f08f4"
......@@ -266,7 +267,7 @@ test_main(void)
"45df2f423e94bf155dd4e1d9e63f315ea606dd38527d4cf6328738c8", 16);
mpz_set_str(signature.s,
"59b3e8efa5bc0ccbf4a3cbb6515c4b9bf784cfacdcc101dc9f81d31f", 16);
test_dsa_verify(&pub, &nettle_sha1,
test_dsa_verify(params, pub.y, &nettle_sha1,
SHEX("edc6fd9b6c6e8a59f283016f7f29ee16deeaa609b5737927"
"162aef34fed985d0bcb550275637ba67831a2d4efccb3529"
"6dfe730f4a0b4f4728d1d7d1bb8f4a36238a5c94311fa113"
......@@ -317,7 +318,7 @@ test_main(void)
"65102e8f64ecb11f06017b1a0c0def3c29897c277c4a948b1f4da6b9", 16);
mpz_set_str(signature.s,
"21ad0abb27bd3c21166cb96aef70c0dbd5f3079cab0dd543d4125bd1", 16);
test_dsa_verify(&pub, &nettle_sha224,
test_dsa_verify(params, pub.y, &nettle_sha224,
SHEX("e920fc1610718f2b0213d301c0092a51f3c6b0107bbbd824"
"3a9689c044e2d142f202d9d195a5faef4be5acadc9ff6f7d"
"2261e58b517139bcb9489b110423c2e59eb181294ffdae8a"
......@@ -369,7 +370,7 @@ test_main(void)
"9c5fa46879ddaf5c14f07dfb5320715f67a6fec179e3ad53342fb6d1", 16);
mpz_set_str(signature.s,
"c3e17e7b3c4d0ac8d49f4dd0f04c16a094f42da0afcc6c90f5f1bbc8", 16);
test_dsa_verify(&pub, &nettle_sha256,
test_dsa_verify(params, pub.y, &nettle_sha256,
SHEX("cec8d2843dee7cb5f9119b75562585e05c5ce2f4e6457e9b"
"cc3c1c781ccd2c0442b6282aea610f7161dcede176e77486"
"1f7d2691be6c894ac3ebf80c0fab21e52a3e63ae0b350257"
......@@ -424,7 +425,7 @@ test_main(void)
mpz_set_str(signature.s,
"4916d91b2927294e429d537c06dd2463d1845018cca2873e"
"90a6c837b445fdde", 16);
test_dsa_verify(&pub, &nettle_sha1,
test_dsa_verify(params, pub.y, &nettle_sha1,
SHEX("de3605dbefde353cbe05e0d6098647b6d041460dfd4c0003"
"12be1afe7551fd3b93fed76a9763c34e004564b8f7dcacbd"
"99e85030632c94e9b0a032046523b7aacdf934a2dbbdcfce"
......@@ -479,7 +480,7 @@ test_main(void)
mpz_set_str(signature.s,
"4bd41c84a724cc86e4f0194ec0fbf379e654d0d7f6a1f08b"
"d468139422a5c353", 16);
test_dsa_verify(&pub, &nettle_sha224,
test_dsa_verify(params, pub.y, &nettle_sha224,
SHEX("39f2d8d503aae8cd17854456ecfad49a18900d4375412bc6"
"89181ed9c2ccafea98dca689a72dc75e5367d3d3abfc2169"
"700d5891cff70f69d9aca093b061b9f5057f94636bc27831"
......@@ -534,7 +535,7 @@ test_main(void)
mpz_set_str(signature.s,
"2bbf68317660ec1e4b154915027b0bc00ee19cfc0bf75d01"
"930504f2ce10a8b0", 16);
test_dsa_verify(&pub, &nettle_sha256,
test_dsa_verify(params, pub.y, &nettle_sha256,
SHEX("4e3a28bcf90d1d2e75f075d9fbe55b36c5529b17bc3a9cca"
"ba6935c9e20548255b3dfae0f91db030c12f2c344b3a29c4"
"151c5b209f5e319fdf1c23b190f64f1fe5b330cb7c8fa952"
......@@ -589,7 +590,7 @@ test_main(void)
mpz_set_str(signature.s,
"5f56869cee7bf64fec5d5d6ea15bb1fa1169003a87eccc16"
"21b90a1b892226f2", 16);
test_dsa_verify(&pub, &nettle_sha384,
test_dsa_verify(params, pub.y, &nettle_sha384,
SHEX("8c78cffdcf25d8230b835b30512684c9b252115870b603d1"
"b4ba2eb5d35b33f26d96b684126ec34fff67dfe5c8c856ac"
"fe3a9ff45ae11d415f30449bcdc3bf9a9fb5a7e48afeaba6"
......@@ -659,7 +660,7 @@ test_main(void)
mpz_set_str(signature.s,
"73e48b77a3aa44307483c2dd895cb51db2112177c185c59c"
"b1dcff32fda02a4f", 16);
test_dsa_verify(&pub, &nettle_sha1,
test_dsa_verify(params, pub.y, &nettle_sha1,
SHEX("ca84af5c9adbc0044db00d7acfb1b493aab0388ffbad47b3"
"8cd3e9e3111cfe2cda2a45f751c46862f05bdcec4b698adf"
"d2e1606e484c3be4ac0c379d4fbc7c2cda43e922811d7f6c"
......@@ -729,7 +730,7 @@ test_main(void)
mpz_set_str(signature.s,
"49f3a74e953e77a7941af3aefeef4ed499be209976a0edb3"
"fa5e7cb961b0c112", 16);
test_dsa_verify(&pub, &nettle_sha256,
test_dsa_verify(params, pub.y, &nettle_sha256,
SHEX("cb06e02234263c22b80e832d6dc5a1bee5ea8af3bc2da752"
"441c04027f176158bfe68372bd67f84d489c0d49b07d4025"
"962976be60437be1a2d01d3be0992afa5abe0980e26a9da4"
......@@ -799,7 +800,7 @@ test_main(void)
mpz_set_str(signature.s,
"3dae01154ecff7b19007a953f185f0663ef7f2537f0b15e0"
"4fb343c961f36de2", 16);
test_dsa_verify(&pub, &nettle_sha384,
test_dsa_verify(params, pub.y, &nettle_sha384,
SHEX("ed9a64d3109ef8a9292956b946873ca4bd887ce624b81be8"
"1b82c69c67aaddf5655f70fe4768114db2834c71787f858e"
"5165da1a7fa961d855ad7e5bc4b7be31b97dbe770798ef79"
......@@ -868,7 +869,7 @@ test_main(void)
mpz_set_str(signature.s,
"6478050977ec585980454e0a2f26a03037b921ca588a78a4"
"daff7e84d49a8a6c", 16);
test_dsa_verify(&pub, &nettle_sha512,
test_dsa_verify(params, pub.y, &nettle_sha512,
SHEX("494180eed0951371bbaf0a850ef13679df49c1f13fe3770b"
"6c13285bf3ad93dc4ab018aab9139d74200808e9c55bf883"
"00324cc697efeaa641d37f3acf72d8c97bff0182a35b9401"
......
testsuite/testutils.c
View file @ 39ea0d27
......@@ -1184,7 +1184,8 @@ test_dsa_sign(const struct dsa_public_key *pub,
#endif
void
test_dsa_verify(const struct dsa_public_key *pub,
test_dsa_verify(const struct dsa_params *params,
const mpz_t pub,
const struct nettle_hash *hash,
struct tstring *msg,
const struct dsa_signature *ref)
......@@ -1203,17 +1204,20 @@ test_dsa_verify(const struct dsa_public_key *pub,
mpz_set (signature.r, ref->r);
mpz_set (signature.s, ref->s);
ASSERT (dsa_verify (pub, hash->digest_size, digest,
&signature));
ASSERT (dsa_verify (params, pub,
hash->digest_size, digest,
&signature));
/* Try bad signature */
mpz_combit(signature.r, 17);
ASSERT (!dsa_verify (pub, hash->digest_size, digest,
ASSERT (!dsa_verify (params, pub,
hash->digest_size, digest,
&signature));
/* Try bad data */
digest[hash->digest_size / 2-1] ^= 8;
ASSERT (!dsa_verify (pub, hash->digest_size, digest,
ASSERT (!dsa_verify (params, pub,
hash->digest_size, digest,
ref));
free (ctx);
......@@ -1222,32 +1226,33 @@ test_dsa_verify(const struct dsa_public_key *pub,
}
void
test_dsa_key(struct dsa_public_key *pub,
struct dsa_private_key *key,
test_dsa_key(const struct dsa_params *params,
const mpz_t pub,
const mpz_t key,
unsigned q_size)
{
mpz_t t;
mpz_init(t);
ASSERT(mpz_sizeinbase(pub->q, 2) == q_size);
ASSERT(mpz_sizeinbase(pub->p, 2) >= DSA_SHA1_MIN_P_BITS);
ASSERT(mpz_sizeinbase(params->q, 2) == q_size);
ASSERT(mpz_sizeinbase(params->p, 2) >= DSA_SHA1_MIN_P_BITS);
ASSERT(mpz_probab_prime_p(pub->p, 10));
ASSERT(mpz_probab_prime_p(params->p, 10));
ASSERT(mpz_probab_prime_p(pub->q, 10));
ASSERT(mpz_probab_prime_p(params->q, 10));
mpz_fdiv_r(t, pub->p, pub->q);
mpz_fdiv_r(t, params->p, params->q);
ASSERT(0 == mpz_cmp_ui(t, 1));
ASSERT(mpz_cmp_ui(pub->g, 1) > 0);
ASSERT(mpz_cmp_ui(params->g, 1) > 0);
mpz_powm(t, pub->g, pub->q, pub->p);
mpz_powm(t, params->g, params->q, params->p);
ASSERT(0 == mpz_cmp_ui(t, 1));
mpz_powm(t, pub->g, key->x, pub->p);
ASSERT(0 == mpz_cmp(t, pub->y));
mpz_powm(t, params->g, key, params->p);
ASSERT(0 == mpz_cmp(t, pub));
mpz_clear(t);
}
......
testsuite/testutils.h
View file @ 39ea0d27
......@@ -205,14 +205,16 @@ test_dsa_sign(const struct dsa_public_key *pub,
const struct dsa_signature *expected);
void
test_dsa_verify(const struct dsa_public_key *pub,
test_dsa_verify(const struct dsa_params *params,
const mpz_t pub,
const struct nettle_hash *hash,
struct tstring *msg,
const struct dsa_signature *ref);
void
test_dsa_key(struct dsa_public_key *pub,
struct dsa_private_key *key,
test_dsa_key(const struct dsa_params *params,
const mpz_t pub,
const mpz_t key,
unsigned q_size);
extern const struct ecc_curve * const ecc_curves[];
......
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