-/* pmeth_fn.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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).
+/*
+ * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <stdlib.h>
-#include "cryptlib.h"
#include <openssl/objects.h>
#include <openssl/evp.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) \
- { \
- EVPerr(err, 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)
- {
- EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
- 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)
- {
- EVPerr(EVP_F_EVP_PKEY_SIGN,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_SIGN)
- {
- EVPerr(EVP_F_EVP_PKEY_SIGN, 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)
- {
- EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
- 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)
- {
- EVPerr(EVP_F_EVP_PKEY_VERIFY,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_VERIFY)
- {
- EVPerr(EVP_F_EVP_PKEY_VERIFY, 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)
- {
- EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
- 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)
- {
- EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER)
- {
- EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, 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);
- }
+#include "internal/cryptlib.h"
+#include "crypto/evp.h"
+#include "internal/provider.h"
+#include "evp_local.h"
+
+static int evp_pkey_asym_cipher_init(EVP_PKEY_CTX *ctx, int operation)
+{
+ int ret = 0;
+ void *provkey = NULL;
+ EVP_ASYM_CIPHER *cipher = NULL;
+ EVP_KEYMGMT *tmp_keymgmt = NULL;
+ const char *supported_ciph = NULL;
+
+ if (ctx == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+
+ evp_pkey_ctx_free_old_ops(ctx);
+ ctx->operation = operation;
+
+ /*
+ * TODO when we stop falling back to legacy, this and the ERR_pop_to_mark()
+ * calls can be removed.
+ */
+ ERR_set_mark();
+
+ if (ctx->keytype == NULL || ctx->engine != NULL)
+ goto legacy;
+
+ /* Ensure that the key is provided. If not, go legacy */
+ tmp_keymgmt = ctx->keymgmt;
+ provkey = evp_pkey_make_provided(ctx->pkey, ctx->libctx,
+ &tmp_keymgmt, ctx->propquery, 0);
+ if (provkey == NULL)
+ goto legacy;
+ if (!EVP_KEYMGMT_up_ref(tmp_keymgmt)) {
+ ERR_clear_last_mark();
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+ EVP_KEYMGMT_free(ctx->keymgmt);
+ ctx->keymgmt = tmp_keymgmt;
+
+ if (ctx->keymgmt->query_operation_name != NULL)
+ supported_ciph =
+ ctx->keymgmt->query_operation_name(OSSL_OP_ASYM_CIPHER);
+
+ /*
+ * If we didn't get a supported ciph, assume there is one with the
+ * same name as the key type.
+ */
+ if (supported_ciph == NULL)
+ supported_ciph = ctx->keytype;
+
+ /*
+ * Because we cleared out old ops, we shouldn't need to worry about
+ * checking if cipher is already there.
+ */
+ cipher =
+ EVP_ASYM_CIPHER_fetch(ctx->libctx, supported_ciph, ctx->propquery);
+
+ if (cipher == NULL
+ || (EVP_KEYMGMT_provider(ctx->keymgmt)
+ != EVP_ASYM_CIPHER_provider(cipher))) {
+ /*
+ * We don't need to free ctx->keymgmt here, as it's not necessarily
+ * tied to this operation. It will be freed by EVP_PKEY_CTX_free().
+ */
+ EVP_ASYM_CIPHER_free(cipher);
+ goto legacy;
+ }
+
+ /*
+ * TODO remove this when legacy is gone
+ * If we don't have the full support we need with provided methods,
+ * let's go see if legacy does.
+ */
+ ERR_pop_to_mark();
+
+ /* No more legacy from here down to legacy: */
+
+ ctx->op.ciph.cipher = cipher;
+ ctx->op.ciph.ciphprovctx = cipher->newctx(ossl_provider_ctx(cipher->prov));
+ if (ctx->op.ciph.ciphprovctx == NULL) {
+ /* The provider key can stay in the cache */
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+
+ switch (operation) {
+ case EVP_PKEY_OP_ENCRYPT:
+ if (cipher->encrypt_init == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ret = -2;
+ goto err;
+ }
+ ret = cipher->encrypt_init(ctx->op.ciph.ciphprovctx, provkey);
+ break;
+ case EVP_PKEY_OP_DECRYPT:
+ if (cipher->decrypt_init == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ret = -2;
+ goto err;
+ }
+ ret = cipher->decrypt_init(ctx->op.ciph.ciphprovctx, provkey);
+ break;
+ default:
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+
+ if (ret <= 0) {
+ cipher->freectx(ctx->op.ciph.ciphprovctx);
+ ctx->op.ciph.ciphprovctx = NULL;
+ goto err;
+ }
+ return 1;
+
+ legacy:
+ /*
+ * TODO remove this when legacy is gone
+ * If we don't have the full support we need with provided methods,
+ * let's go see if legacy does.
+ */
+ ERR_pop_to_mark();
+
+ if (ctx->pmeth == NULL || ctx->pmeth->encrypt == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+ switch(ctx->operation) {
+ case EVP_PKEY_OP_ENCRYPT:
+ if (ctx->pmeth->encrypt_init == NULL)
+ return 1;
+ ret = ctx->pmeth->encrypt_init(ctx);
+ break;
+ case EVP_PKEY_OP_DECRYPT:
+ if (ctx->pmeth->decrypt_init == NULL)
+ return 1;
+ ret = ctx->pmeth->decrypt_init(ctx);
+ break;
+ default:
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ ret = -1;
+ }
+
+ err:
+ if (ret <= 0)
+ ctx->operation = EVP_PKEY_OP_UNDEFINED;
+ return ret;
+}
int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
- {
- int ret;
- if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt)
- {
- EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
- 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;
- }
+{
+ return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_ENCRYPT);
+}
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)
- {
- EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_ENCRYPT)
- {
- EVPerr(EVP_F_EVP_PKEY_ENCRYPT, 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);
- }
+ unsigned char *out, size_t *outlen,
+ const unsigned char *in, size_t inlen)
+{
+ int ret;
+
+ if (ctx == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+
+ if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
+ EVPerr(0, EVP_R_OPERATON_NOT_INITIALIZED);
+ return -1;
+ }
+
+ if (ctx->op.ciph.ciphprovctx == NULL)
+ goto legacy;
+
+ ret = ctx->op.ciph.cipher->encrypt(ctx->op.ciph.ciphprovctx, out, outlen,
+ (out == NULL ? 0 : *outlen), in, inlen);
+ return ret;
+
+ legacy:
+ if (ctx->pmeth == NULL || ctx->pmeth->encrypt == NULL) {
+ EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
+ EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+ 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)
- {
- EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
- 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;
- }
+{
+ return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_DECRYPT);
+}
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)
- {
- EVPerr(EVP_F_EVP_PKEY_DECRYPT,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_DECRYPT)
- {
- EVPerr(EVP_F_EVP_PKEY_DECRYPT, 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)
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
- 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->ctrl)
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_DERIVE && ctx->operation != EVP_PKEY_OP_ENCRYPT)
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
- 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)
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
- return -1;
- }
-
- if (ctx->pkey->type != peer->type)
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
- EVP_R_DIFFERENT_KEY_TYPES);
- return -1;
- }
-
- if (!EVP_PKEY_missing_parameters(peer) &&
- !EVP_PKEY_cmp_parameters(ctx->pkey, peer))
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
- EVP_R_DIFFERENT_PARAMETERS);
- return -1;
- }
-
- 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)
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_DERIVE)
- {
- EVPerr(EVP_F_EVP_PKEY_DERIVE, 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);
- }
+ unsigned char *out, size_t *outlen,
+ const unsigned char *in, size_t inlen)
+{
+ int ret;
+
+ if (ctx == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+
+ if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
+ EVPerr(0, EVP_R_OPERATON_NOT_INITIALIZED);
+ return -1;
+ }
+
+ if (ctx->op.ciph.ciphprovctx == NULL)
+ goto legacy;
+
+ ret = ctx->op.ciph.cipher->decrypt(ctx->op.ciph.ciphprovctx, out, outlen,
+ (out == NULL ? 0 : *outlen), in, inlen);
+ return ret;
+
+ legacy:
+ if (ctx->pmeth == NULL || ctx->pmeth->decrypt == NULL) {
+ EVPerr(EVP_F_EVP_PKEY_DECRYPT,
+ EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+ M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
+ return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
+}
+
+
+static EVP_ASYM_CIPHER *evp_asym_cipher_new(OSSL_PROVIDER *prov)
+{
+ EVP_ASYM_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_ASYM_CIPHER));
+
+ if (cipher == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ cipher->lock = CRYPTO_THREAD_lock_new();
+ if (cipher->lock == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(cipher);
+ return NULL;
+ }
+ cipher->prov = prov;
+ ossl_provider_up_ref(prov);
+ cipher->refcnt = 1;
+
+ return cipher;
+}
+
+static void *evp_asym_cipher_from_dispatch(int name_id,
+ const OSSL_DISPATCH *fns,
+ OSSL_PROVIDER *prov)
+{
+ EVP_ASYM_CIPHER *cipher = NULL;
+ int ctxfncnt = 0, encfncnt = 0, decfncnt = 0;
+ int gparamfncnt = 0, sparamfncnt = 0;
+
+ if ((cipher = evp_asym_cipher_new(prov)) == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ cipher->name_id = name_id;
+
+ for (; fns->function_id != 0; fns++) {
+ switch (fns->function_id) {
+ case OSSL_FUNC_ASYM_CIPHER_NEWCTX:
+ if (cipher->newctx != NULL)
+ break;
+ cipher->newctx = OSSL_get_OP_asym_cipher_newctx(fns);
+ ctxfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_ENCRYPT_INIT:
+ if (cipher->encrypt_init != NULL)
+ break;
+ cipher->encrypt_init = OSSL_get_OP_asym_cipher_encrypt_init(fns);
+ encfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_ENCRYPT:
+ if (cipher->encrypt != NULL)
+ break;
+ cipher->encrypt = OSSL_get_OP_asym_cipher_encrypt(fns);
+ encfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_DECRYPT_INIT:
+ if (cipher->decrypt_init != NULL)
+ break;
+ cipher->decrypt_init = OSSL_get_OP_asym_cipher_decrypt_init(fns);
+ decfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_DECRYPT:
+ if (cipher->decrypt != NULL)
+ break;
+ cipher->decrypt = OSSL_get_OP_asym_cipher_decrypt(fns);
+ decfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_FREECTX:
+ if (cipher->freectx != NULL)
+ break;
+ cipher->freectx = OSSL_get_OP_asym_cipher_freectx(fns);
+ ctxfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_DUPCTX:
+ if (cipher->dupctx != NULL)
+ break;
+ cipher->dupctx = OSSL_get_OP_asym_cipher_dupctx(fns);
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_GET_CTX_PARAMS:
+ if (cipher->get_ctx_params != NULL)
+ break;
+ cipher->get_ctx_params
+ = OSSL_get_OP_asym_cipher_get_ctx_params(fns);
+ gparamfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_GETTABLE_CTX_PARAMS:
+ if (cipher->gettable_ctx_params != NULL)
+ break;
+ cipher->gettable_ctx_params
+ = OSSL_get_OP_asym_cipher_gettable_ctx_params(fns);
+ gparamfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_SET_CTX_PARAMS:
+ if (cipher->set_ctx_params != NULL)
+ break;
+ cipher->set_ctx_params
+ = OSSL_get_OP_asym_cipher_set_ctx_params(fns);
+ sparamfncnt++;
+ break;
+ case OSSL_FUNC_ASYM_CIPHER_SETTABLE_CTX_PARAMS:
+ if (cipher->settable_ctx_params != NULL)
+ break;
+ cipher->settable_ctx_params
+ = OSSL_get_OP_asym_cipher_settable_ctx_params(fns);
+ sparamfncnt++;
+ break;
+ }
+ }
+ if (ctxfncnt != 2
+ || (encfncnt != 0 && encfncnt != 2)
+ || (decfncnt != 0 && decfncnt != 2)
+ || (encfncnt != 2 && decfncnt != 2)
+ || (gparamfncnt != 0 && gparamfncnt != 2)
+ || (sparamfncnt != 0 && sparamfncnt != 2)) {
+ /*
+ * In order to be a consistent set of functions we must have at least
+ * a set of context functions (newctx and freectx) as well as a pair of
+ * "cipher" functions: (encrypt_init, encrypt) or
+ * (decrypt_init decrypt). set_ctx_params and settable_ctx_params are
+ * optional, but if one of them is present then the other one must also
+ * be present. The same applies to get_ctx_params and
+ * gettable_ctx_params. The dupctx function is optional.
+ */
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
+ goto err;
+ }
+
+ return cipher;
+ err:
+ EVP_ASYM_CIPHER_free(cipher);
+ return NULL;
+}
+
+void EVP_ASYM_CIPHER_free(EVP_ASYM_CIPHER *cipher)
+{
+ if (cipher != NULL) {
+ int i;
+
+ CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock);
+ if (i > 0)
+ return;
+ ossl_provider_free(cipher->prov);
+ CRYPTO_THREAD_lock_free(cipher->lock);
+ OPENSSL_free(cipher);
+ }
+}
+
+int EVP_ASYM_CIPHER_up_ref(EVP_ASYM_CIPHER *cipher)
+{
+ int ref = 0;
+
+ CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock);
+ return 1;
+}
+
+OSSL_PROVIDER *EVP_ASYM_CIPHER_provider(const EVP_ASYM_CIPHER *cipher)
+{
+ return cipher->prov;
+}
+
+EVP_ASYM_CIPHER *EVP_ASYM_CIPHER_fetch(OPENSSL_CTX *ctx, const char *algorithm,
+ const char *properties)
+{
+ return evp_generic_fetch(ctx, OSSL_OP_ASYM_CIPHER, algorithm, properties,
+ evp_asym_cipher_from_dispatch,
+ (int (*)(void *))EVP_ASYM_CIPHER_up_ref,
+ (void (*)(void *))EVP_ASYM_CIPHER_free);
+}
+
+int EVP_ASYM_CIPHER_is_a(const EVP_ASYM_CIPHER *cipher, const char *name)
+{
+ return evp_is_a(cipher->prov, cipher->name_id, NULL, name);
+}
+
+int EVP_ASYM_CIPHER_number(const EVP_ASYM_CIPHER *cipher)
+{
+ return cipher->name_id;
+}
+
+void EVP_ASYM_CIPHER_do_all_provided(OPENSSL_CTX *libctx,
+ void (*fn)(EVP_ASYM_CIPHER *cipher,
+ void *arg),
+ void *arg)
+{
+ evp_generic_do_all(libctx, OSSL_OP_ASYM_CIPHER,
+ (void (*)(void *, void *))fn, arg,
+ evp_asym_cipher_from_dispatch,
+ (void (*)(void *))EVP_ASYM_CIPHER_free);
+}
+
+
+void EVP_ASYM_CIPHER_names_do_all(const EVP_ASYM_CIPHER *cipher,
+ void (*fn)(const char *name, void *data),
+ void *data)
+{
+ if (cipher->prov != NULL)
+ evp_names_do_all(cipher->prov, cipher->name_id, fn, data);
+}
projects / openssl.git / blobdiff