Mirror of BoringSSL (grpc依赖)
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236 lines
9.7 KiB
236 lines
9.7 KiB
/* ==================================================================== |
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* Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* openssl-core@OpenSSL.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). */ |
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#ifndef OPENSSL_HEADER_ECDSA_H |
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#define OPENSSL_HEADER_ECDSA_H |
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#include <openssl/base.h> |
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#include <openssl/ec_key.h> |
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#if defined(__cplusplus) |
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extern "C" { |
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#endif |
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// ECDSA contains functions for signing and verifying with the Digital Signature |
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// Algorithm over elliptic curves. |
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// Signing and verifying. |
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// ECDSA_sign signs |digest_len| bytes from |digest| with |key| and writes the |
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// resulting signature to |sig|, which must have |ECDSA_size(key)| bytes of |
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// space. On successful exit, |*sig_len| is set to the actual number of bytes |
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// written. The |type| argument should be zero. It returns one on success and |
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// zero otherwise. |
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// |
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// WARNING: |digest| must be the output of some hash function on the data to be |
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// signed. Passing unhashed inputs will not result in a secure signature scheme. |
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OPENSSL_EXPORT int ECDSA_sign(int type, const uint8_t *digest, |
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size_t digest_len, uint8_t *sig, |
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unsigned int *sig_len, const EC_KEY *key); |
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// ECDSA_verify verifies that |sig_len| bytes from |sig| constitute a valid |
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// signature by |key| of |digest|. (The |type| argument should be zero.) It |
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// returns one on success or zero if the signature is invalid or an error |
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// occurred. |
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// |
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// WARNING: |digest| must be the output of some hash function on the data to be |
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// verified. Passing unhashed inputs will not result in a secure signature |
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// scheme. |
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OPENSSL_EXPORT int ECDSA_verify(int type, const uint8_t *digest, |
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size_t digest_len, const uint8_t *sig, |
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size_t sig_len, const EC_KEY *key); |
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// ECDSA_size returns the maximum size of an ECDSA signature using |key|. It |
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// returns zero if |key| is NULL or if it doesn't have a group set. |
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OPENSSL_EXPORT size_t ECDSA_size(const EC_KEY *key); |
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// Low-level signing and verification. |
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// |
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// Low-level functions handle signatures as |ECDSA_SIG| structures which allow |
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// the two values in an ECDSA signature to be handled separately. |
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struct ecdsa_sig_st { |
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BIGNUM *r; |
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BIGNUM *s; |
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}; |
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// ECDSA_SIG_new returns a fresh |ECDSA_SIG| structure or NULL on error. |
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OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_new(void); |
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// ECDSA_SIG_free frees |sig| its member |BIGNUM|s. |
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OPENSSL_EXPORT void ECDSA_SIG_free(ECDSA_SIG *sig); |
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// ECDSA_SIG_get0_r returns the r component of |sig|. |
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OPENSSL_EXPORT const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig); |
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// ECDSA_SIG_get0_s returns the s component of |sig|. |
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OPENSSL_EXPORT const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig); |
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// ECDSA_SIG_get0 sets |*out_r| and |*out_s|, if non-NULL, to the two |
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// components of |sig|. |
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OPENSSL_EXPORT void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **out_r, |
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const BIGNUM **out_s); |
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// ECDSA_SIG_set0 sets |sig|'s components to |r| and |s|, neither of which may |
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// be NULL. On success, it takes ownership of each argument and returns one. |
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// Otherwise, it returns zero. |
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OPENSSL_EXPORT int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s); |
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// ECDSA_do_sign signs |digest_len| bytes from |digest| with |key| and returns |
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// the resulting signature structure, or NULL on error. |
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// |
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// WARNING: |digest| must be the output of some hash function on the data to be |
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// signed. Passing unhashed inputs will not result in a secure signature scheme. |
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OPENSSL_EXPORT ECDSA_SIG *ECDSA_do_sign(const uint8_t *digest, |
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size_t digest_len, const EC_KEY *key); |
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// ECDSA_do_verify verifies that |sig| constitutes a valid signature by |key| |
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// of |digest|. It returns one on success or zero if the signature is invalid |
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// or on error. |
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// |
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// WARNING: |digest| must be the output of some hash function on the data to be |
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// verified. Passing unhashed inputs will not result in a secure signature |
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// scheme. |
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OPENSSL_EXPORT int ECDSA_do_verify(const uint8_t *digest, size_t digest_len, |
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const ECDSA_SIG *sig, const EC_KEY *key); |
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// ASN.1 functions. |
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// ECDSA_SIG_parse parses a DER-encoded ECDSA-Sig-Value structure from |cbs| and |
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// advances |cbs|. It returns a newly-allocated |ECDSA_SIG| or NULL on error. |
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OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_parse(CBS *cbs); |
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// ECDSA_SIG_from_bytes parses |in| as a DER-encoded ECDSA-Sig-Value structure. |
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// It returns a newly-allocated |ECDSA_SIG| structure or NULL on error. |
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OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_from_bytes(const uint8_t *in, |
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size_t in_len); |
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// ECDSA_SIG_marshal marshals |sig| as a DER-encoded ECDSA-Sig-Value and appends |
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// the result to |cbb|. It returns one on success and zero on error. |
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OPENSSL_EXPORT int ECDSA_SIG_marshal(CBB *cbb, const ECDSA_SIG *sig); |
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// ECDSA_SIG_to_bytes marshals |sig| as a DER-encoded ECDSA-Sig-Value and, on |
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// success, sets |*out_bytes| to a newly allocated buffer containing the result |
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// and returns one. Otherwise, it returns zero. The result should be freed with |
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// |OPENSSL_free|. |
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OPENSSL_EXPORT int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len, |
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const ECDSA_SIG *sig); |
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// ECDSA_SIG_max_len returns the maximum length of a DER-encoded ECDSA-Sig-Value |
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// structure for a group whose order is represented in |order_len| bytes, or |
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// zero on overflow. |
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OPENSSL_EXPORT size_t ECDSA_SIG_max_len(size_t order_len); |
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// Testing-only functions. |
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// ECDSA_sign_with_nonce_and_leak_private_key_for_testing behaves like |
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// |ECDSA_do_sign| but uses |nonce| for the ECDSA nonce 'k', instead of a random |
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// value. |nonce| is interpreted as a big-endian integer. It must be reduced |
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// modulo the group order and padded with zeros up to |BN_num_bytes(order)| |
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// bytes. |
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// |
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// WARNING: This function is only exported for testing purposes, when using test |
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// vectors or fuzzing strategies. It must not be used outside tests and may leak |
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// any private keys it is used with. |
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OPENSSL_EXPORT ECDSA_SIG * |
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ECDSA_sign_with_nonce_and_leak_private_key_for_testing(const uint8_t *digest, |
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size_t digest_len, |
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const EC_KEY *eckey, |
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const uint8_t *nonce, |
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size_t nonce_len); |
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// Deprecated functions. |
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// d2i_ECDSA_SIG parses aa DER-encoded ECDSA-Sig-Value structure from |len| |
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// bytes at |*inp|, as described in |d2i_SAMPLE|. |
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// |
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// Use |ECDSA_SIG_parse| instead. |
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OPENSSL_EXPORT ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **out, const uint8_t **inp, |
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long len); |
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// i2d_ECDSA_SIG marshals |sig| as a DER-encoded ECDSA-Sig-Value, as described |
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// in |i2d_SAMPLE|. |
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// |
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// Use |ECDSA_SIG_marshal| instead. |
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OPENSSL_EXPORT int i2d_ECDSA_SIG(const ECDSA_SIG *sig, uint8_t **outp); |
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#if defined(__cplusplus) |
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} // extern C |
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extern "C++" { |
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BSSL_NAMESPACE_BEGIN |
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BORINGSSL_MAKE_DELETER(ECDSA_SIG, ECDSA_SIG_free) |
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BSSL_NAMESPACE_END |
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} // extern C++ |
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#endif |
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#define ECDSA_R_BAD_SIGNATURE 100 |
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#define ECDSA_R_MISSING_PARAMETERS 101 |
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#define ECDSA_R_NEED_NEW_SETUP_VALUES 102 |
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#define ECDSA_R_NOT_IMPLEMENTED 103 |
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#define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 104 |
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#define ECDSA_R_ENCODE_ERROR 105 |
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#endif // OPENSSL_HEADER_ECDSA_H
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