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modify ecdsatest to use accessor

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Reviewed-by: Richard Levitte <levitte@openssl.org>
This commit is contained in:
Dr. Stephen Henson 2015-10-27 18:51:37 +00:00
parent 7236e3c8f7
commit cf70b8f5a6
1 changed files with 14 additions and 9 deletions
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23
test/ecdsatest.c
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@ -193,6 +193,7 @@ int x9_62_test_internal(BIO *out, int nid, const char *r_in, const char *s_in)
ECDSA_SIG *signature = NULL;
BIGNUM *r = NULL, *s = NULL;
BIGNUM *kinv = NULL, *rp = NULL;
BIGNUM *sig_r, *sig_s;
if (md_ctx == NULL)
goto x962_int_err;
@ -227,7 +228,8 @@ int x9_62_test_internal(BIO *out, int nid, const char *r_in, const char *s_in)
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))
ECDSA_SIG_get0(&sig_r, &sig_s, signature);
if (BN_cmp(sig_r, r) || BN_cmp(sig_s, s))
goto x962_int_err;
BIO_printf(out, ".");
(void)BIO_flush(out);
@ -303,6 +305,7 @@ int test_builtin(BIO *out)
const unsigned char *sig_ptr;
unsigned char *sig_ptr2;
unsigned char *raw_buf = NULL;
BIGNUM *sig_r, *sig_s;
unsigned int sig_len, degree, r_len, s_len, bn_len, buf_len;
int nid, ret = 0;
@ -433,9 +436,11 @@ int test_builtin(BIO *out)
goto builtin_err;
}
ECDSA_SIG_get0(&sig_r, &sig_s, ecdsa_sig);
/* Store the two BIGNUMs in raw_buf. */
r_len = BN_num_bytes(ecdsa_sig->r);
s_len = BN_num_bytes(ecdsa_sig->s);
r_len = BN_num_bytes(sig_r);
s_len = BN_num_bytes(sig_s);
bn_len = (degree + 7) / 8;
if ((r_len > bn_len) || (s_len > bn_len)) {
BIO_printf(out, " failed\n");
@ -444,16 +449,16 @@ int test_builtin(BIO *out)
buf_len = 2 * bn_len;
if ((raw_buf = OPENSSL_zalloc(buf_len)) == NULL)
goto builtin_err;
BN_bn2bin(ecdsa_sig->r, raw_buf + bn_len - r_len);
BN_bn2bin(ecdsa_sig->s, raw_buf + buf_len - s_len);
BN_bn2bin(sig_r, raw_buf + bn_len - r_len);
BN_bn2bin(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))
if ((BN_bin2bn(raw_buf, bn_len, sig_r) == NULL) ||
(BN_bin2bn(raw_buf + bn_len, bn_len, sig_s) == NULL))
goto builtin_err;
sig_ptr2 = signature;
@ -466,8 +471,8 @@ int test_builtin(BIO *out)
* 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))
if ((BN_bin2bn(raw_buf, bn_len, sig_r) == NULL) ||
(BN_bin2bn(raw_buf + bn_len, bn_len, sig_s) == NULL))
goto builtin_err;
sig_ptr2 = signature;