yuzu/externals/libressl/crypto/evp/pmeth_fn.c

346 lines
9.6 KiB
C
Raw Normal View History

2020-12-28 19:15:37 +04:00
/* $OpenBSD: pmeth_fn.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 2006.
*/
/* ====================================================================
* Copyright (c) 2006 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.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* 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/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 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
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include "evp_locl.h"
#define M_check_autoarg(ctx, arg, arglen, err) \
if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) \
{ \
size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
if (!arg) \
{ \
*arglen = pksize; \
return 1; \
} \
else if (*arglen < pksize) \
{ \
EVPerror(EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\
return 0; \
} \
}
int
EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
{
int ret;
if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
ctx->operation = EVP_PKEY_OP_SIGN;
if (!ctx->pmeth->sign_init)
return 1;
ret = ctx->pmeth->sign_init(ctx);
if (ret <= 0)
ctx->operation = EVP_PKEY_OP_UNDEFINED;
return ret;
}
int
EVP_PKEY_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
const unsigned char *tbs, size_t tbslen)
{
if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
if (ctx->operation != EVP_PKEY_OP_SIGN) {
EVPerror(EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
}
int
EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
{
int ret;
if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
ctx->operation = EVP_PKEY_OP_VERIFY;
if (!ctx->pmeth->verify_init)
return 1;
ret = ctx->pmeth->verify_init(ctx);
if (ret <= 0)
ctx->operation = EVP_PKEY_OP_UNDEFINED;
return ret;
}
int
EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
const unsigned char *tbs, size_t tbslen)
{
if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
if (ctx->operation != EVP_PKEY_OP_VERIFY) {
EVPerror(EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
}
int
EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
{
int ret;
if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
if (!ctx->pmeth->verify_recover_init)
return 1;
ret = ctx->pmeth->verify_recover_init(ctx);
if (ret <= 0)
ctx->operation = EVP_PKEY_OP_UNDEFINED;
return ret;
}
int
EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, unsigned char *rout, size_t *routlen,
const unsigned char *sig, size_t siglen)
{
if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
EVPerror(EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
}
int
EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
{
int ret;
if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
ctx->operation = EVP_PKEY_OP_ENCRYPT;
if (!ctx->pmeth->encrypt_init)
return 1;
ret = ctx->pmeth->encrypt_init(ctx);
if (ret <= 0)
ctx->operation = EVP_PKEY_OP_UNDEFINED;
return ret;
}
int
EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
const unsigned char *in, size_t inlen)
{
if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
EVPerror(EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
}
int
EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
{
int ret;
if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
ctx->operation = EVP_PKEY_OP_DECRYPT;
if (!ctx->pmeth->decrypt_init)
return 1;
ret = ctx->pmeth->decrypt_init(ctx);
if (ret <= 0)
ctx->operation = EVP_PKEY_OP_UNDEFINED;
return ret;
}
int
EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
const unsigned char *in, size_t inlen)
{
if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
EVPerror(EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
}
int
EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
{
int ret;
if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
ctx->operation = EVP_PKEY_OP_DERIVE;
if (!ctx->pmeth->derive_init)
return 1;
ret = ctx->pmeth->derive_init(ctx);
if (ret <= 0)
ctx->operation = EVP_PKEY_OP_UNDEFINED;
return ret;
}
int
EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer)
{
int ret;
if (!ctx || !ctx->pmeth || !(ctx->pmeth->derive ||
ctx->pmeth->encrypt || ctx->pmeth->decrypt) ||
!ctx->pmeth->ctrl) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
if (ctx->operation != EVP_PKEY_OP_DERIVE &&
ctx->operation != EVP_PKEY_OP_ENCRYPT &&
ctx->operation != EVP_PKEY_OP_DECRYPT) {
EVPerror(EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
if (ret <= 0)
return ret;
if (ret == 2)
return 1;
if (!ctx->pkey) {
EVPerror(EVP_R_NO_KEY_SET);
return -1;
}
if (ctx->pkey->type != peer->type) {
EVPerror(EVP_R_DIFFERENT_KEY_TYPES);
return -1;
}
/* ran@cryptocom.ru: For clarity. The error is if parameters in peer are
* present (!missing) but don't match. EVP_PKEY_cmp_parameters may return
* 1 (match), 0 (don't match) and -2 (comparison is not defined). -1
* (different key types) is impossible here because it is checked earlier.
* -2 is OK for us here, as well as 1, so we can check for 0 only. */
if (!EVP_PKEY_missing_parameters(peer) &&
!EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
EVPerror(EVP_R_DIFFERENT_PARAMETERS);
return -1;
}
EVP_PKEY_free(ctx->peerkey);
ctx->peerkey = peer;
ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
if (ret <= 0) {
ctx->peerkey = NULL;
return ret;
}
CRYPTO_add(&peer->references, 1, CRYPTO_LOCK_EVP_PKEY);
return 1;
}
int
EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen)
{
if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
EVPerror(EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
}
if (ctx->operation != EVP_PKEY_OP_DERIVE) {
EVPerror(EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
return ctx->pmeth->derive(ctx, key, pkeylen);
}