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-rw-r--r--crypto/ecdsa/ecdsatest.c908
1 files changed, 446 insertions, 462 deletions
diff --git a/crypto/ecdsa/ecdsatest.c b/crypto/ecdsa/ecdsatest.c
index 537bb30362cf..b2d78f3d55e4 100644
--- a/crypto/ecdsa/ecdsatest.c
+++ b/crypto/ecdsa/ecdsatest.c
@@ -10,7 +10,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
@@ -58,13 +58,13 @@
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
*
- * Portions of the attached software ("Contribution") are developed by
+ * Portions of the attached software ("Contribution") are developed by
* SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
*
* The Contribution is licensed pursuant to the OpenSSL open source
* license provided above.
*
- * The elliptic curve binary polynomial software is originally written by
+ * The elliptic curve binary polynomial software is originally written by
* Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
*
*/
@@ -76,26 +76,26 @@
#include <openssl/opensslconf.h> /* To see if OPENSSL_NO_ECDSA is defined */
#ifdef OPENSSL_NO_ECDSA
-int main(int argc, char * argv[])
- {
- puts("Elliptic curves are disabled.");
- return 0;
- }
+int main(int argc, char *argv[])
+{
+ puts("Elliptic curves are disabled.");
+ return 0;
+}
#else
-#include <openssl/crypto.h>
-#include <openssl/bio.h>
-#include <openssl/evp.h>
-#include <openssl/bn.h>
-#include <openssl/ecdsa.h>
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif
-#include <openssl/err.h>
-#include <openssl/rand.h>
+# include <openssl/crypto.h>
+# include <openssl/bio.h>
+# include <openssl/evp.h>
+# include <openssl/bn.h>
+# include <openssl/ecdsa.h>
+# ifndef OPENSSL_NO_ENGINE
+# include <openssl/engine.h>
+# endif
+# include <openssl/err.h>
+# include <openssl/rand.h>
static const char rnd_seed[] = "string to make the random number generator "
- "think it has entropy";
+ "think it has entropy";
/* declaration of the test functions */
int x9_62_tests(BIO *);
@@ -107,466 +107,450 @@ int change_rand(void);
int restore_rand(void);
int fbytes(unsigned char *buf, int num);
-RAND_METHOD fake_rand;
+RAND_METHOD fake_rand;
const RAND_METHOD *old_rand;
int change_rand(void)
- {
- /* save old rand method */
- if ((old_rand = RAND_get_rand_method()) == NULL)
- return 0;
-
- fake_rand.seed = old_rand->seed;
- fake_rand.cleanup = old_rand->cleanup;
- fake_rand.add = old_rand->add;
- fake_rand.status = old_rand->status;
- /* use own random function */
- fake_rand.bytes = fbytes;
- fake_rand.pseudorand = old_rand->bytes;
- /* set new RAND_METHOD */
- if (!RAND_set_rand_method(&fake_rand))
- return 0;
- return 1;
- }
+{
+ /* save old rand method */
+ if ((old_rand = RAND_get_rand_method()) == NULL)
+ return 0;
+
+ fake_rand.seed = old_rand->seed;
+ fake_rand.cleanup = old_rand->cleanup;
+ fake_rand.add = old_rand->add;
+ fake_rand.status = old_rand->status;
+ /* use own random function */
+ fake_rand.bytes = fbytes;
+ fake_rand.pseudorand = old_rand->bytes;
+ /* set new RAND_METHOD */
+ if (!RAND_set_rand_method(&fake_rand))
+ return 0;
+ return 1;
+}
int restore_rand(void)
- {
- if (!RAND_set_rand_method(old_rand))
- return 0;
- else
- return 1;
- }
+{
+ if (!RAND_set_rand_method(old_rand))
+ return 0;
+ else
+ return 1;
+}
static int fbytes_counter = 0;
static const char *numbers[8] = {
- "651056770906015076056810763456358567190100156695615665659",
- "6140507067065001063065065565667405560006161556565665656654",
- "8763001015071075675010661307616710783570106710677817767166"
- "71676178726717",
- "7000000175690566466555057817571571075705015757757057795755"
- "55657156756655",
- "1275552191113212300012030439187146164646146646466749494799",
- "1542725565216523985789236956265265265235675811949404040041",
- "1456427555219115346513212300075341203043918714616464614664"
- "64667494947990",
- "1712787255652165239672857892369562652652652356758119494040"
- "40041670216363"};
+ "651056770906015076056810763456358567190100156695615665659",
+ "6140507067065001063065065565667405560006161556565665656654",
+ "8763001015071075675010661307616710783570106710677817767166"
+ "71676178726717",
+ "7000000175690566466555057817571571075705015757757057795755"
+ "55657156756655",
+ "1275552191113212300012030439187146164646146646466749494799",
+ "1542725565216523985789236956265265265235675811949404040041",
+ "1456427555219115346513212300075341203043918714616464614664"
+ "64667494947990",
+ "1712787255652165239672857892369562652652652356758119494040"
+ "40041670216363"
+};
int fbytes(unsigned char *buf, int num)
- {
- int ret;
- BIGNUM *tmp = NULL;
-
- if (fbytes_counter >= 8)
- return 0;
- tmp = BN_new();
- if (!tmp)
- return 0;
- if (!BN_dec2bn(&tmp, numbers[fbytes_counter]))
- {
- BN_free(tmp);
- return 0;
- }
- fbytes_counter ++;
- if (num != BN_num_bytes(tmp) || !BN_bn2bin(tmp, buf))
- ret = 0;
- else
- ret = 1;
- if (tmp)
- BN_free(tmp);
- return ret;
- }
+{
+ int ret;
+ BIGNUM *tmp = NULL;
+
+ if (fbytes_counter >= 8)
+ return 0;
+ tmp = BN_new();
+ if (!tmp)
+ return 0;
+ if (!BN_dec2bn(&tmp, numbers[fbytes_counter])) {
+ BN_free(tmp);
+ return 0;
+ }
+ fbytes_counter++;
+ if (num != BN_num_bytes(tmp) || !BN_bn2bin(tmp, buf))
+ ret = 0;
+ else
+ ret = 1;
+ if (tmp)
+ BN_free(tmp);
+ return ret;
+}
/* some tests from the X9.62 draft */
int x9_62_test_internal(BIO *out, int nid, const char *r_in, const char *s_in)
- {
- int ret = 0;
- const char message[] = "abc";
- unsigned char digest[20];
- unsigned int dgst_len = 0;
- EVP_MD_CTX md_ctx;
- EC_KEY *key = NULL;
- ECDSA_SIG *signature = NULL;
- BIGNUM *r = NULL, *s = NULL;
-
- EVP_MD_CTX_init(&md_ctx);
- /* get the message digest */
- EVP_DigestInit(&md_ctx, EVP_ecdsa());
- EVP_DigestUpdate(&md_ctx, (const void*)message, 3);
- EVP_DigestFinal(&md_ctx, digest, &dgst_len);
-
- BIO_printf(out, "testing %s: ", OBJ_nid2sn(nid));
- /* create the key */
- if ((key = EC_KEY_new_by_curve_name(nid)) == NULL)
- goto x962_int_err;
- if (!EC_KEY_generate_key(key))
- goto x962_int_err;
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* create the signature */
- signature = ECDSA_do_sign(digest, 20, key);
- if (signature == NULL)
- goto x962_int_err;
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* compare the created signature with the expected signature */
- if ((r = BN_new()) == NULL || (s = BN_new()) == NULL)
- goto x962_int_err;
- if (!BN_dec2bn(&r, r_in) ||
- !BN_dec2bn(&s, s_in))
- goto x962_int_err;
- if (BN_cmp(signature->r ,r) || BN_cmp(signature->s, s))
- goto x962_int_err;
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* verify the signature */
- if (ECDSA_do_verify(digest, 20, signature, key) != 1)
- goto x962_int_err;
- BIO_printf(out, ".");
- (void)BIO_flush(out);
-
- BIO_printf(out, " ok\n");
- ret = 1;
-x962_int_err:
- if (!ret)
- BIO_printf(out, " failed\n");
- if (key)
- EC_KEY_free(key);
- if (signature)
- ECDSA_SIG_free(signature);
- if (r)
- BN_free(r);
- if (s)
- BN_free(s);
- EVP_MD_CTX_cleanup(&md_ctx);
- return ret;
- }
+{
+ int ret = 0;
+ const char message[] = "abc";
+ unsigned char digest[20];
+ unsigned int dgst_len = 0;
+ EVP_MD_CTX md_ctx;
+ EC_KEY *key = NULL;
+ ECDSA_SIG *signature = NULL;
+ BIGNUM *r = NULL, *s = NULL;
+
+ EVP_MD_CTX_init(&md_ctx);
+ /* get the message digest */
+ EVP_DigestInit(&md_ctx, EVP_ecdsa());
+ EVP_DigestUpdate(&md_ctx, (const void *)message, 3);
+ EVP_DigestFinal(&md_ctx, digest, &dgst_len);
+
+ BIO_printf(out, "testing %s: ", OBJ_nid2sn(nid));
+ /* create the key */
+ if ((key = EC_KEY_new_by_curve_name(nid)) == NULL)
+ goto x962_int_err;
+ if (!EC_KEY_generate_key(key))
+ goto x962_int_err;
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* create the signature */
+ signature = ECDSA_do_sign(digest, 20, key);
+ if (signature == NULL)
+ goto x962_int_err;
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* compare the created signature with the expected signature */
+ if ((r = BN_new()) == NULL || (s = BN_new()) == NULL)
+ goto x962_int_err;
+ if (!BN_dec2bn(&r, r_in) || !BN_dec2bn(&s, s_in))
+ goto x962_int_err;
+ if (BN_cmp(signature->r, r) || BN_cmp(signature->s, s))
+ goto x962_int_err;
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* verify the signature */
+ if (ECDSA_do_verify(digest, 20, signature, key) != 1)
+ goto x962_int_err;
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+
+ BIO_printf(out, " ok\n");
+ ret = 1;
+ x962_int_err:
+ if (!ret)
+ BIO_printf(out, " failed\n");
+ if (key)
+ EC_KEY_free(key);
+ if (signature)
+ ECDSA_SIG_free(signature);
+ if (r)
+ BN_free(r);
+ if (s)
+ BN_free(s);
+ EVP_MD_CTX_cleanup(&md_ctx);
+ return ret;
+}
int x9_62_tests(BIO *out)
- {
- int ret = 0;
-
- BIO_printf(out, "some tests from X9.62:\n");
-
- /* set own rand method */
- if (!change_rand())
- goto x962_err;
-
- if (!x9_62_test_internal(out, NID_X9_62_prime192v1,
- "3342403536405981729393488334694600415596881826869351677613",
- "5735822328888155254683894997897571951568553642892029982342"))
- goto x962_err;
- if (!x9_62_test_internal(out, NID_X9_62_prime239v1,
- "3086361431751678114926225473006680188549593787585317781474"
- "62058306432176",
- "3238135532097973577080787768312505059318910517550078427819"
- "78505179448783"))
- goto x962_err;
-#ifndef OPENSSL_NO_EC2M
- if (!x9_62_test_internal(out, NID_X9_62_c2tnb191v1,
- "87194383164871543355722284926904419997237591535066528048",
- "308992691965804947361541664549085895292153777025772063598"))
- goto x962_err;
- if (!x9_62_test_internal(out, NID_X9_62_c2tnb239v1,
- "2159633321041961198501834003903461262881815148684178964245"
- "5876922391552",
- "1970303740007316867383349976549972270528498040721988191026"
- "49413465737174"))
- goto x962_err;
-#endif
- ret = 1;
-x962_err:
- if (!restore_rand())
- ret = 0;
- return ret;
- }
+{
+ int ret = 0;
+
+ BIO_printf(out, "some tests from X9.62:\n");
+
+ /* set own rand method */
+ if (!change_rand())
+ goto x962_err;
+
+ if (!x9_62_test_internal(out, NID_X9_62_prime192v1,
+ "3342403536405981729393488334694600415596881826869351677613",
+ "5735822328888155254683894997897571951568553642892029982342"))
+ goto x962_err;
+ if (!x9_62_test_internal(out, NID_X9_62_prime239v1,
+ "3086361431751678114926225473006680188549593787585317781474"
+ "62058306432176",
+ "3238135532097973577080787768312505059318910517550078427819"
+ "78505179448783"))
+ goto x962_err;
+# ifndef OPENSSL_NO_EC2M
+ if (!x9_62_test_internal(out, NID_X9_62_c2tnb191v1,
+ "87194383164871543355722284926904419997237591535066528048",
+ "308992691965804947361541664549085895292153777025772063598"))
+ goto x962_err;
+ if (!x9_62_test_internal(out, NID_X9_62_c2tnb239v1,
+ "2159633321041961198501834003903461262881815148684178964245"
+ "5876922391552",
+ "1970303740007316867383349976549972270528498040721988191026"
+ "49413465737174"))
+ goto x962_err;
+# endif
+ ret = 1;
+ x962_err:
+ if (!restore_rand())
+ ret = 0;
+ return ret;
+}
int test_builtin(BIO *out)
- {
- EC_builtin_curve *curves = NULL;
- size_t crv_len = 0, n = 0;
- EC_KEY *eckey = NULL, *wrong_eckey = NULL;
- EC_GROUP *group;
- ECDSA_SIG *ecdsa_sig = NULL;
- unsigned char digest[20], wrong_digest[20];
- unsigned char *signature = NULL;
- const unsigned char *sig_ptr;
- unsigned char *sig_ptr2;
- unsigned char *raw_buf = NULL;
- unsigned int sig_len, degree, r_len, s_len, bn_len, buf_len;
- int nid, ret = 0;
-
- /* fill digest values with some random data */
- if (!RAND_pseudo_bytes(digest, 20) ||
- !RAND_pseudo_bytes(wrong_digest, 20))
- {
- BIO_printf(out, "ERROR: unable to get random data\n");
- goto builtin_err;
- }
-
- /* create and verify a ecdsa signature with every availble curve
- * (with ) */
- BIO_printf(out, "\ntesting ECDSA_sign() and ECDSA_verify() "
- "with some internal curves:\n");
-
- /* get a list of all internal curves */
- crv_len = EC_get_builtin_curves(NULL, 0);
-
- curves = OPENSSL_malloc(sizeof(EC_builtin_curve) * crv_len);
-
- if (curves == NULL)
- {
- BIO_printf(out, "malloc error\n");
- goto builtin_err;
- }
-
- if (!EC_get_builtin_curves(curves, crv_len))
- {
- BIO_printf(out, "unable to get internal curves\n");
- goto builtin_err;
- }
-
- /* now create and verify a signature for every curve */
- for (n = 0; n < crv_len; n++)
- {
- unsigned char dirt, offset;
-
- nid = curves[n].nid;
- if (nid == NID_ipsec4)
- continue;
- /* create new ecdsa key (== EC_KEY) */
- if ((eckey = EC_KEY_new()) == NULL)
- goto builtin_err;
- group = EC_GROUP_new_by_curve_name(nid);
- if (group == NULL)
- goto builtin_err;
- if (EC_KEY_set_group(eckey, group) == 0)
- goto builtin_err;
- EC_GROUP_free(group);
- degree = EC_GROUP_get_degree(EC_KEY_get0_group(eckey));
- if (degree < 160)
- /* drop the curve */
- {
- EC_KEY_free(eckey);
- eckey = NULL;
- continue;
- }
- BIO_printf(out, "%s: ", OBJ_nid2sn(nid));
- /* create key */
- if (!EC_KEY_generate_key(eckey))
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- /* create second key */
- if ((wrong_eckey = EC_KEY_new()) == NULL)
- goto builtin_err;
- group = EC_GROUP_new_by_curve_name(nid);
- if (group == NULL)
- goto builtin_err;
- if (EC_KEY_set_group(wrong_eckey, group) == 0)
- goto builtin_err;
- EC_GROUP_free(group);
- if (!EC_KEY_generate_key(wrong_eckey))
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
-
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* check key */
- if (!EC_KEY_check_key(eckey))
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* create signature */
- sig_len = ECDSA_size(eckey);
- if ((signature = OPENSSL_malloc(sig_len)) == NULL)
- goto builtin_err;
- if (!ECDSA_sign(0, digest, 20, signature, &sig_len, eckey))
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* verify signature */
- if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1)
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* verify signature with the wrong key */
- if (ECDSA_verify(0, digest, 20, signature, sig_len,
- wrong_eckey) == 1)
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* wrong digest */
- if (ECDSA_verify(0, wrong_digest, 20, signature, sig_len,
- eckey) == 1)
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- BIO_printf(out, ".");
- (void)BIO_flush(out);
- /* wrong length */
- if (ECDSA_verify(0, digest, 20, signature, sig_len - 1,
- eckey) == 1)
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- BIO_printf(out, ".");
- (void)BIO_flush(out);
-
- /* Modify a single byte of the signature: to ensure we don't
- * garble the ASN1 structure, we read the raw signature and
- * modify a byte in one of the bignums directly. */
- sig_ptr = signature;
- if ((ecdsa_sig = d2i_ECDSA_SIG(NULL, &sig_ptr, sig_len)) == NULL)
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
-
- /* Store the two BIGNUMs in raw_buf. */
- r_len = BN_num_bytes(ecdsa_sig->r);
- s_len = BN_num_bytes(ecdsa_sig->s);
- bn_len = (degree + 7) / 8;
- if ((r_len > bn_len) || (s_len > bn_len))
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- buf_len = 2 * bn_len;
- if ((raw_buf = OPENSSL_malloc(buf_len)) == NULL)
- goto builtin_err;
- /* Pad the bignums with leading zeroes. */
- memset(raw_buf, 0, buf_len);
- BN_bn2bin(ecdsa_sig->r, raw_buf + bn_len - r_len);
- BN_bn2bin(ecdsa_sig->s, raw_buf + buf_len - s_len);
-
- /* Modify a single byte in the buffer. */
- offset = raw_buf[10] % buf_len;
- dirt = raw_buf[11] ? raw_buf[11] : 1;
- raw_buf[offset] ^= dirt;
- /* Now read the BIGNUMs back in from raw_buf. */
- if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
- (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
- goto builtin_err;
-
- sig_ptr2 = signature;
- sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
- if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) == 1)
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- /* Sanity check: undo the modification and verify signature. */
- raw_buf[offset] ^= dirt;
- if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
- (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
- goto builtin_err;
-
- sig_ptr2 = signature;
- sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
- if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1)
- {
- BIO_printf(out, " failed\n");
- goto builtin_err;
- }
- BIO_printf(out, ".");
- (void)BIO_flush(out);
-
- BIO_printf(out, " ok\n");
- /* cleanup */
- /* clean bogus errors */
- ERR_clear_error();
- OPENSSL_free(signature);
- signature = NULL;
- EC_KEY_free(eckey);
- eckey = NULL;
- EC_KEY_free(wrong_eckey);
- wrong_eckey = NULL;
- ECDSA_SIG_free(ecdsa_sig);
- ecdsa_sig = NULL;
- OPENSSL_free(raw_buf);
- raw_buf = NULL;
- }
-
- ret = 1;
-builtin_err:
- if (eckey)
- EC_KEY_free(eckey);
- if (wrong_eckey)
- EC_KEY_free(wrong_eckey);
- if (ecdsa_sig)
- ECDSA_SIG_free(ecdsa_sig);
- if (signature)
- OPENSSL_free(signature);
- if (raw_buf)
- OPENSSL_free(raw_buf);
- if (curves)
- OPENSSL_free(curves);
-
- return ret;
- }
+{
+ EC_builtin_curve *curves = NULL;
+ size_t crv_len = 0, n = 0;
+ EC_KEY *eckey = NULL, *wrong_eckey = NULL;
+ EC_GROUP *group;
+ ECDSA_SIG *ecdsa_sig = NULL;
+ unsigned char digest[20], wrong_digest[20];
+ unsigned char *signature = NULL;
+ const unsigned char *sig_ptr;
+ unsigned char *sig_ptr2;
+ unsigned char *raw_buf = NULL;
+ unsigned int sig_len, degree, r_len, s_len, bn_len, buf_len;
+ int nid, ret = 0;
+
+ /* fill digest values with some random data */
+ if (!RAND_pseudo_bytes(digest, 20) ||
+ !RAND_pseudo_bytes(wrong_digest, 20)) {
+ BIO_printf(out, "ERROR: unable to get random data\n");
+ goto builtin_err;
+ }
+
+ /*
+ * create and verify a ecdsa signature with every availble curve (with )
+ */
+ BIO_printf(out, "\ntesting ECDSA_sign() and ECDSA_verify() "
+ "with some internal curves:\n");
+
+ /* get a list of all internal curves */
+ crv_len = EC_get_builtin_curves(NULL, 0);
+
+ curves = OPENSSL_malloc(sizeof(EC_builtin_curve) * crv_len);
+
+ if (curves == NULL) {
+ BIO_printf(out, "malloc error\n");
+ goto builtin_err;
+ }
+
+ if (!EC_get_builtin_curves(curves, crv_len)) {
+ BIO_printf(out, "unable to get internal curves\n");
+ goto builtin_err;
+ }
+
+ /* now create and verify a signature for every curve */
+ for (n = 0; n < crv_len; n++) {
+ unsigned char dirt, offset;
+
+ nid = curves[n].nid;
+ if (nid == NID_ipsec4)
+ continue;
+ /* create new ecdsa key (== EC_KEY) */
+ if ((eckey = EC_KEY_new()) == NULL)
+ goto builtin_err;
+ group = EC_GROUP_new_by_curve_name(nid);
+ if (group == NULL)
+ goto builtin_err;
+ if (EC_KEY_set_group(eckey, group) == 0)
+ goto builtin_err;
+ EC_GROUP_free(group);
+ degree = EC_GROUP_get_degree(EC_KEY_get0_group(eckey));
+ if (degree < 160)
+ /* drop the curve */
+ {
+ EC_KEY_free(eckey);
+ eckey = NULL;
+ continue;
+ }
+ BIO_printf(out, "%s: ", OBJ_nid2sn(nid));
+ /* create key */
+ if (!EC_KEY_generate_key(eckey)) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ /* create second key */
+ if ((wrong_eckey = EC_KEY_new()) == NULL)
+ goto builtin_err;
+ group = EC_GROUP_new_by_curve_name(nid);
+ if (group == NULL)
+ goto builtin_err;
+ if (EC_KEY_set_group(wrong_eckey, group) == 0)
+ goto builtin_err;
+ EC_GROUP_free(group);
+ if (!EC_KEY_generate_key(wrong_eckey)) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* check key */
+ if (!EC_KEY_check_key(eckey)) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* create signature */
+ sig_len = ECDSA_size(eckey);
+ if ((signature = OPENSSL_malloc(sig_len)) == NULL)
+ goto builtin_err;
+ if (!ECDSA_sign(0, digest, 20, signature, &sig_len, eckey)) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* verify signature */
+ if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* verify signature with the wrong key */
+ if (ECDSA_verify(0, digest, 20, signature, sig_len, wrong_eckey) == 1) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* wrong digest */
+ if (ECDSA_verify(0, wrong_digest, 20, signature, sig_len, eckey) == 1) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+ /* wrong length */
+ if (ECDSA_verify(0, digest, 20, signature, sig_len - 1, eckey) == 1) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+
+ /*
+ * Modify a single byte of the signature: to ensure we don't garble
+ * the ASN1 structure, we read the raw signature and modify a byte in
+ * one of the bignums directly.
+ */
+ sig_ptr = signature;
+ if ((ecdsa_sig = d2i_ECDSA_SIG(NULL, &sig_ptr, sig_len)) == NULL) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+
+ /* Store the two BIGNUMs in raw_buf. */
+ r_len = BN_num_bytes(ecdsa_sig->r);
+ s_len = BN_num_bytes(ecdsa_sig->s);
+ bn_len = (degree + 7) / 8;
+ if ((r_len > bn_len) || (s_len > bn_len)) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ buf_len = 2 * bn_len;
+ if ((raw_buf = OPENSSL_malloc(buf_len)) == NULL)
+ goto builtin_err;
+ /* Pad the bignums with leading zeroes. */
+ memset(raw_buf, 0, buf_len);
+ BN_bn2bin(ecdsa_sig->r, raw_buf + bn_len - r_len);
+ BN_bn2bin(ecdsa_sig->s, raw_buf + buf_len - s_len);
+
+ /* Modify a single byte in the buffer. */
+ offset = raw_buf[10] % buf_len;
+ dirt = raw_buf[11] ? raw_buf[11] : 1;
+ raw_buf[offset] ^= dirt;
+ /* Now read the BIGNUMs back in from raw_buf. */
+ if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
+ (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
+ goto builtin_err;
+
+ sig_ptr2 = signature;
+ sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
+ if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) == 1) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ /*
+ * Sanity check: undo the modification and verify signature.
+ */
+ raw_buf[offset] ^= dirt;
+ if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
+ (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
+ goto builtin_err;
+
+ sig_ptr2 = signature;
+ sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
+ if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1) {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+
+ BIO_printf(out, " ok\n");
+ /* cleanup */
+ /* clean bogus errors */
+ ERR_clear_error();
+ OPENSSL_free(signature);
+ signature = NULL;
+ EC_KEY_free(eckey);
+ eckey = NULL;
+ EC_KEY_free(wrong_eckey);
+ wrong_eckey = NULL;
+ ECDSA_SIG_free(ecdsa_sig);
+ ecdsa_sig = NULL;
+ OPENSSL_free(raw_buf);
+ raw_buf = NULL;
+ }
+
+ ret = 1;
+ builtin_err:
+ if (eckey)
+ EC_KEY_free(eckey);
+ if (wrong_eckey)
+ EC_KEY_free(wrong_eckey);
+ if (ecdsa_sig)
+ ECDSA_SIG_free(ecdsa_sig);
+ if (signature)
+ OPENSSL_free(signature);
+ if (raw_buf)
+ OPENSSL_free(raw_buf);
+ if (curves)
+ OPENSSL_free(curves);
+
+ return ret;
+}
int main(void)
- {
- int ret = 1;
- BIO *out;
-
- out = BIO_new_fp(stdout, BIO_NOCLOSE);
-
- /* enable memory leak checking unless explicitly disabled */
- if (!((getenv("OPENSSL_DEBUG_MEMORY") != NULL) &&
- (0 == strcmp(getenv("OPENSSL_DEBUG_MEMORY"), "off"))))
- {
- CRYPTO_malloc_debug_init();
- CRYPTO_set_mem_debug_options(V_CRYPTO_MDEBUG_ALL);
- }
- else
- {
- /* OPENSSL_DEBUG_MEMORY=off */
- CRYPTO_set_mem_debug_functions(0, 0, 0, 0, 0);
- }
- CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
-
- ERR_load_crypto_strings();
-
- /* initialize the prng */
- RAND_seed(rnd_seed, sizeof(rnd_seed));
-
- /* the tests */
- if (!x9_62_tests(out)) goto err;
- if (!test_builtin(out)) goto err;
-
- ret = 0;
-err:
- if (ret)
- BIO_printf(out, "\nECDSA test failed\n");
- else
- BIO_printf(out, "\nECDSA test passed\n");
- if (ret)
- ERR_print_errors(out);
- CRYPTO_cleanup_all_ex_data();
- ERR_remove_thread_state(NULL);
- ERR_free_strings();
- CRYPTO_mem_leaks(out);
- if (out != NULL)
- BIO_free(out);
- return ret;
- }
+{
+ int ret = 1;
+ BIO *out;
+
+ out = BIO_new_fp(stdout, BIO_NOCLOSE);
+
+ /* enable memory leak checking unless explicitly disabled */
+ if (!((getenv("OPENSSL_DEBUG_MEMORY") != NULL) &&
+ (0 == strcmp(getenv("OPENSSL_DEBUG_MEMORY"), "off")))) {
+ CRYPTO_malloc_debug_init();
+ CRYPTO_set_mem_debug_options(V_CRYPTO_MDEBUG_ALL);
+ } else {
+ /* OPENSSL_DEBUG_MEMORY=off */
+ CRYPTO_set_mem_debug_functions(0, 0, 0, 0, 0);
+ }
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+ ERR_load_crypto_strings();
+
+ /* initialize the prng */
+ RAND_seed(rnd_seed, sizeof(rnd_seed));
+
+ /* the tests */
+ if (!x9_62_tests(out))
+ goto err;
+ if (!test_builtin(out))
+ goto err;
+
+ ret = 0;
+ err:
+ if (ret)
+ BIO_printf(out, "\nECDSA test failed\n");
+ else
+ BIO_printf(out, "\nECDSA test passed\n");
+ if (ret)
+ ERR_print_errors(out);
+ CRYPTO_cleanup_all_ex_data();
+ ERR_remove_thread_state(NULL);
+ ERR_free_strings();
+ CRYPTO_mem_leaks(out);
+ if (out != NULL)
+ BIO_free(out);
+ return ret;
+}
#endif