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- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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 acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS 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 AUTHOR OR 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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.] */
-
- #include <openssl/evp.h>
-
- #include <stdio.h>
- #include <string.h>
-
- #include <openssl/err.h>
- #include <openssl/mem.h>
- #include <openssl/obj.h>
-
- #include "internal.h"
-
-
- extern const EVP_PKEY_METHOD rsa_pkey_meth;
- extern const EVP_PKEY_METHOD ec_pkey_meth;
-
- static const EVP_PKEY_METHOD *const evp_methods[] = {
- &rsa_pkey_meth,
- &ec_pkey_meth,
- };
-
- static const EVP_PKEY_METHOD *evp_pkey_meth_find(int type) {
- unsigned i;
-
- for (i = 0; i < sizeof(evp_methods)/sizeof(EVP_PKEY_METHOD*); i++) {
- if (evp_methods[i]->pkey_id == type) {
- return evp_methods[i];
- }
- }
-
- return NULL;
- }
-
- static EVP_PKEY_CTX *evp_pkey_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id) {
- EVP_PKEY_CTX *ret;
- const EVP_PKEY_METHOD *pmeth;
-
- if (id == -1) {
- if (!pkey || !pkey->ameth) {
- return NULL;
- }
- id = pkey->ameth->pkey_id;
- }
-
- pmeth = evp_pkey_meth_find(id);
-
- if (pmeth == NULL) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
- const char *name = OBJ_nid2sn(id);
- ERR_add_error_dataf("algorithm %d (%s)", id, name);
- return NULL;
- }
-
- ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
- if (!ret) {
- OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- memset(ret, 0, sizeof(EVP_PKEY_CTX));
-
- ret->engine = e;
- ret->pmeth = pmeth;
- ret->operation = EVP_PKEY_OP_UNDEFINED;
-
- if (pkey) {
- ret->pkey = EVP_PKEY_up_ref(pkey);
- }
-
- if (pmeth->init) {
- if (pmeth->init(ret) <= 0) {
- EVP_PKEY_free(ret->pkey);
- OPENSSL_free(ret);
- return NULL;
- }
- }
-
- return ret;
- }
-
- EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e) {
- return evp_pkey_ctx_new(pkey, e, -1);
- }
-
- EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e) {
- return evp_pkey_ctx_new(NULL, e, id);
- }
-
- void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx) {
- if (ctx == NULL) {
- return;
- }
- if (ctx->pmeth && ctx->pmeth->cleanup) {
- ctx->pmeth->cleanup(ctx);
- }
- EVP_PKEY_free(ctx->pkey);
- EVP_PKEY_free(ctx->peerkey);
- OPENSSL_free(ctx);
- }
-
- EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx) {
- EVP_PKEY_CTX *rctx;
-
- if (!pctx->pmeth || !pctx->pmeth->copy) {
- return NULL;
- }
-
- rctx = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
- if (!rctx) {
- return NULL;
- }
-
- memset(rctx, 0, sizeof(EVP_PKEY_CTX));
-
- rctx->pmeth = pctx->pmeth;
- rctx->engine = pctx->engine;
- rctx->operation = pctx->operation;
-
- if (pctx->pkey) {
- rctx->pkey = EVP_PKEY_up_ref(pctx->pkey);
- if (rctx->pkey == NULL) {
- goto err;
- }
- }
-
- if (pctx->peerkey) {
- rctx->peerkey = EVP_PKEY_up_ref(pctx->peerkey);
- if (rctx->peerkey == NULL) {
- goto err;
- }
- }
-
- if (pctx->pmeth->copy(rctx, pctx) > 0) {
- return rctx;
- }
-
- err:
- EVP_PKEY_CTX_free(rctx);
- OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
- return NULL;
- }
-
- EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx) { return ctx->pkey; }
-
- void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data) {
- ctx->app_data = data;
- }
-
- void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx) { return ctx->app_data; }
-
- int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
- int p1, void *p2) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
- return 0;
- }
- if (keytype != -1 && ctx->pmeth->pkey_id != keytype) {
- return 0;
- }
-
- if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_NO_OPERATION_SET);
- return 0;
- }
-
- if (optype != -1 && !(ctx->operation & optype)) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_OPERATION);
- return 0;
- }
-
- return ctx->pmeth->ctrl(ctx, cmd, p1, p2);
- }
-
- int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
-
- ctx->operation = EVP_PKEY_OP_SIGN;
- if (!ctx->pmeth->sign_init) {
- return 1;
- }
-
- if (!ctx->pmeth->sign_init(ctx)) {
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return 0;
- }
-
- return 1;
- }
-
- int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *sig_len,
- const uint8_t *data, size_t data_len) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- if (ctx->operation != EVP_PKEY_OP_SIGN) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
- return 0;
- }
- return ctx->pmeth->sign(ctx, sig, sig_len, data, data_len);
- }
-
- int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- ctx->operation = EVP_PKEY_OP_VERIFY;
- if (!ctx->pmeth->verify_init) {
- return 1;
- }
- if (!ctx->pmeth->verify_init(ctx)) {
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return 0;
- }
-
- return 1;
- }
-
- int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t sig_len,
- const uint8_t *data, size_t data_len) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- if (ctx->operation != EVP_PKEY_OP_VERIFY) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
- return 0;
- }
- return ctx->pmeth->verify(ctx, sig, sig_len, data, data_len);
- }
-
- int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- ctx->operation = EVP_PKEY_OP_ENCRYPT;
- if (!ctx->pmeth->encrypt_init) {
- return 1;
- }
- if (!ctx->pmeth->encrypt_init(ctx)) {
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return 0;
- }
- return 1;
- }
-
- int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
- const uint8_t *in, size_t inlen) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
- return 0;
- }
- return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
- }
-
- int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- ctx->operation = EVP_PKEY_OP_DECRYPT;
- if (!ctx->pmeth->decrypt_init) {
- return 1;
- }
- if (!ctx->pmeth->decrypt_init(ctx)) {
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return 0;
- }
- return 1;
- }
-
- int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
- const uint8_t *in, size_t inlen) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
- return 0;
- }
- return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
- }
-
- int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- ctx->operation = EVP_PKEY_OP_DERIVE;
- if (!ctx->pmeth->derive_init) {
- return 1;
- }
- if (!ctx->pmeth->derive_init(ctx)) {
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return 0;
- }
- return 1;
- }
-
- 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) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- if (ctx->operation != EVP_PKEY_OP_DERIVE &&
- ctx->operation != EVP_PKEY_OP_ENCRYPT &&
- ctx->operation != EVP_PKEY_OP_DECRYPT) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
- return 0;
- }
-
- ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
-
- if (ret <= 0) {
- return 0;
- }
-
- if (ret == 2) {
- return 1;
- }
-
- if (!ctx->pkey) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_NO_KEY_SET);
- return 0;
- }
-
- if (ctx->pkey->type != peer->type) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
- return 0;
- }
-
- /* 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)) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_PARAMETERS);
- return 0;
- }
-
- 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 0;
- }
-
- EVP_PKEY_up_ref(peer);
- return 1;
- }
-
- int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *out_key_len) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- if (ctx->operation != EVP_PKEY_OP_DERIVE) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
- return 0;
- }
- return ctx->pmeth->derive(ctx, key, out_key_len);
- }
-
- int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- ctx->operation = EVP_PKEY_OP_KEYGEN;
- if (!ctx->pmeth->keygen_init) {
- return 1;
- }
- if (!ctx->pmeth->keygen_init(ctx)) {
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return 0;
- }
- return 1;
- }
-
- int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey) {
- if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return 0;
- }
- if (ctx->operation != EVP_PKEY_OP_KEYGEN) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
- return 0;
- }
-
- if (!ppkey) {
- return 0;
- }
-
- if (!*ppkey) {
- *ppkey = EVP_PKEY_new();
- if (!*ppkey) {
- OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
- return 0;
- }
- }
-
- if (!ctx->pmeth->keygen(ctx, *ppkey)) {
- EVP_PKEY_free(*ppkey);
- *ppkey = NULL;
- return 0;
- }
- return 1;
- }
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