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/* Copyright (c) 2014, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <stdio.h>
#include <string.h>
#include <openssl/bio.h>
#include <openssl/crypto.h>
#include <openssl/ec_key.h>
#include <openssl/err.h>
#include "internal.h"
static const uint8_t kECKeyWithoutPublic[] = {
0x30, 0x31, 0x02, 0x01, 0x01, 0x04, 0x20, 0xc6, 0xc1, 0xaa, 0xda, 0x15, 0xb0,
0x76, 0x61, 0xf8, 0x14, 0x2c, 0x6c, 0xaf, 0x0f, 0xdb, 0x24, 0x1a, 0xff, 0x2e,
0xfe, 0x46, 0xc0, 0x93, 0x8b, 0x74, 0xf2, 0xbc, 0xc5, 0x30, 0x52, 0xb0, 0x77,
0xa0, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07,
};
int test_d2i_ECPrivateKey(void) {
int len, ret = 0;
uint8_t *out = NULL, *outp;
const uint8_t *inp;
EC_KEY *key = NULL;
BIGNUM *x = NULL, *y = NULL;
const EC_POINT *public;
char *x_hex = NULL, *y_hex = NULL;
inp = kECKeyWithoutPublic;
key = d2i_ECPrivateKey(NULL, &inp, sizeof(kECKeyWithoutPublic));
if (key == NULL || inp != kECKeyWithoutPublic + sizeof(kECKeyWithoutPublic)) {
fprintf(stderr, "Failed to parse private key.\n");
BIO_print_errors_fp(stderr);
goto out;
}
len = i2d_ECPrivateKey(key, NULL);
out = malloc(len);
outp = out;
if (len != i2d_ECPrivateKey(key, &outp)) {
fprintf(stderr, "Failed to serialize private key.\n");
BIO_print_errors_fp(stderr);
goto out;
}
if (0 != memcmp(out, kECKeyWithoutPublic, len)) {
fprintf(stderr, "Serialisation of key doesn't match original.\n");
goto out;
}
public = EC_KEY_get0_public_key(key);
if (public == NULL) {
fprintf(stderr, "Public key missing.\n");
goto out;
}
x = BN_new();
y = BN_new();
if (x == NULL || y == NULL) {
goto out;
}
if (!EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(key), public, x, y,
NULL)) {
fprintf(stderr, "Failed to get public key in affine coordinates.\n");
goto out;
}
x_hex = BN_bn2hex(x);
y_hex = BN_bn2hex(y);
if (0 != strcmp(x_hex, "c81561ecf2e54edefe6617db1c7a34a70744ddb261f269b83dacfcd2ade5a681") ||
0 != strcmp(y_hex, "e0e2afa3f9b6abe4c698ef6495f1be49a3196c5056acb3763fe4507eec596e88")) {
fprintf(stderr, "Incorrect public key: %s %s\n", x_hex, y_hex);
goto out;
}
ret = 1;
out:
if (key != NULL) {
EC_KEY_free(key);
}
if (out != NULL) {
free(out);
}
if (x != NULL) {
BN_free(x);
}
if (y != NULL) {
BN_free(y);
}
if (x_hex != NULL) {
OPENSSL_free(x_hex);
}
if (y_hex != NULL) {
OPENSSL_free(y_hex);
}
return ret;
}
int main(void) {
CRYPTO_library_init();
ERR_load_crypto_strings();
if (!test_d2i_ECPrivateKey()) {
fprintf(stderr, "failed\n");
return 1;
}
printf("PASS\n");
return 0;
}
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