chromium/third_party/boringssl/src/crypto/ecdsa_extra/ecdsa_asn1.c

/* ====================================================================
 * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
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 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    [email protected].
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * ([email protected]).  This product includes software written by Tim
 * Hudson ([email protected]). */

#include <openssl/ecdsa.h>

#include <limits.h>
#include <string.h>

#include <openssl/bn.h>
#include <openssl/bytestring.h>
#include <openssl/err.h>
#include <openssl/ec_key.h>
#include <openssl/mem.h>

#include "../bytestring/internal.h"
#include "../fipsmodule/ecdsa/internal.h"
#include "../internal.h"


static ECDSA_SIG *ecdsa_sig_from_fixed(const EC_KEY *key, const uint8_t *in,
                                       size_t len) { … }

static int ecdsa_sig_to_fixed(const EC_KEY *key, uint8_t *out, size_t *out_len,
                              size_t max_out, const ECDSA_SIG *sig) { … }

int ECDSA_sign(int type, const uint8_t *digest, size_t digest_len, uint8_t *sig,
               unsigned int *out_sig_len, const EC_KEY *eckey) { … }

int ECDSA_verify(int type, const uint8_t *digest, size_t digest_len,
                 const uint8_t *sig, size_t sig_len, const EC_KEY *eckey) { … }


size_t ECDSA_size(const EC_KEY *key) { … }

ECDSA_SIG *ECDSA_SIG_new(void) { … }

void ECDSA_SIG_free(ECDSA_SIG *sig) { … }

const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig) { … }

const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig) { … }

void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **out_r,
                    const BIGNUM **out_s) { … }

int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s) { … }

int ECDSA_do_verify(const uint8_t *digest, size_t digest_len,
                    const ECDSA_SIG *sig, const EC_KEY *eckey) { … }

// This function is only exported for testing and is not called in production
// code.
ECDSA_SIG *ECDSA_sign_with_nonce_and_leak_private_key_for_testing(
    const uint8_t *digest, size_t digest_len, const EC_KEY *eckey,
    const uint8_t *nonce, size_t nonce_len) { … }

ECDSA_SIG *ECDSA_do_sign(const uint8_t *digest, size_t digest_len,
                         const EC_KEY *eckey) { … }

ECDSA_SIG *ECDSA_SIG_parse(CBS *cbs) { … }

ECDSA_SIG *ECDSA_SIG_from_bytes(const uint8_t *in, size_t in_len) { … }

int ECDSA_SIG_marshal(CBB *cbb, const ECDSA_SIG *sig) { … }

int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len,
                       const ECDSA_SIG *sig) { … }

// der_len_len returns the number of bytes needed to represent a length of |len|
// in DER.
static size_t der_len_len(size_t len) { … }

size_t ECDSA_SIG_max_len(size_t order_len) { … }

ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **out, const uint8_t **inp, long len) { … }

int i2d_ECDSA_SIG(const ECDSA_SIG *sig, uint8_t **outp) { … }