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Current Path: /usr/src/contrib/bearssl/src/ec

usr / src / contrib / bearssl / src / ec /

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📄 ec_all_m15.c(3.24 KB)
📄 ec_all_m31.c(4.34 KB)
📄 ec_c25519_i15.c(8.68 KB)
📄 ec_c25519_i31.c(8.56 KB)
📄 ec_c25519_m15.c(34.75 KB)
📄 ec_c25519_m31.c(17.89 KB)
📄 ec_c25519_m62.c(14.03 KB)
📄 ec_c25519_m64.c(21.03 KB)
📄 ec_curve25519.c(1.72 KB)
📄 ec_default.c(1.28 KB)
📄 ec_keygen.c(2.24 KB)
📄 ec_p256_m15.c(53.66 KB)
📄 ec_p256_m31.c(35.55 KB)
📄 ec_p256_m62.c(44.46 KB)
📄 ec_p256_m64.c(43.36 KB)
📄 ec_prime_i15.c(19.51 KB)
📄 ec_prime_i31.c(19.02 KB)
📄 ec_pubkey.c(2.45 KB)
📄 ec_secp256r1.c(1.93 KB)
📄 ec_secp384r1.c(2.22 KB)
📄 ec_secp521r1.c(2.54 KB)
📄 ecdsa_atr.c(3.16 KB)
📄 ecdsa_default_sign_asn1.c(1.31 KB)
📄 ecdsa_default_sign_raw.c(1.3 KB)
📄 ecdsa_default_vrfy_asn1.c(1.31 KB)
📄 ecdsa_default_vrfy_raw.c(1.3 KB)
📄 ecdsa_i15_bits.c(1.55 KB)
📄 ecdsa_i15_sign_asn1.c(1.61 KB)
📄 ecdsa_i15_sign_raw.c(4.97 KB)
📄 ecdsa_i15_vrfy_asn1.c(1.75 KB)
📄 ecdsa_i15_vrfy_raw.c(4.66 KB)
📄 ecdsa_i31_bits.c(1.55 KB)
📄 ecdsa_i31_sign_asn1.c(1.61 KB)
📄 ecdsa_i31_sign_raw.c(4.96 KB)
📄 ecdsa_i31_vrfy_asn1.c(1.75 KB)
📄 ecdsa_i31_vrfy_raw.c(4.65 KB)
📄 ecdsa_rta.c(2.94 KB)

Editing: ecdsa_i15_vrfy_asn1.c

/*
 * Copyright (c) 2017 Thomas Pornin <pornin@bolet.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining 
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be 
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "inner.h"

#define FIELD_LEN   ((BR_MAX_EC_SIZE + 7) >> 3)

/* see bearssl_ec.h */
uint32_t
br_ecdsa_i15_vrfy_asn1(const br_ec_impl *impl,
	const void *hash, size_t hash_len,
	const br_ec_public_key *pk,
	const void *sig, size_t sig_len)
{
	/*
	 * We use a double-sized buffer because a malformed ASN.1 signature
	 * may trigger a size expansion when converting to "raw" format.
	 */
	unsigned char rsig[(FIELD_LEN << 2) + 24];

if (sig_len > ((sizeof rsig) >> 1)) {
		return 0;
	}
	memcpy(rsig, sig, sig_len);
	sig_len = br_ecdsa_asn1_to_raw(rsig, sig_len);
	return br_ecdsa_i15_vrfy_raw(impl, hash, hash_len, pk, rsig, sig_len);
}

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Editing: ecdsa_i15_vrfy_asn1.c

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