mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
bcd5d3a22d
Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/15564)
489 lines
15 KiB
C
489 lines
15 KiB
C
/*
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* Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <openssl/objects.h>
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#include <openssl/evp.h>
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#include "internal/cryptlib.h"
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#include "internal/provider.h"
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#include "internal/core.h"
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#include "crypto/evp.h"
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#include "evp_local.h"
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static int evp_pkey_asym_cipher_init(EVP_PKEY_CTX *ctx, int operation,
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const OSSL_PARAM params[])
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{
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int ret = 0;
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void *provkey = NULL;
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EVP_ASYM_CIPHER *cipher = NULL;
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EVP_KEYMGMT *tmp_keymgmt = NULL;
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const char *supported_ciph = NULL;
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if (ctx == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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evp_pkey_ctx_free_old_ops(ctx);
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ctx->operation = operation;
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ERR_set_mark();
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if (evp_pkey_ctx_is_legacy(ctx))
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goto legacy;
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/*
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* Ensure that the key is provided, either natively, or as a cached export.
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* If not, go legacy
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*/
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tmp_keymgmt = ctx->keymgmt;
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provkey = evp_pkey_export_to_provider(ctx->pkey, ctx->libctx,
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&tmp_keymgmt, ctx->propquery);
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if (provkey == NULL)
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goto legacy;
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if (!EVP_KEYMGMT_up_ref(tmp_keymgmt)) {
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ERR_clear_last_mark();
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ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
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goto err;
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}
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EVP_KEYMGMT_free(ctx->keymgmt);
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ctx->keymgmt = tmp_keymgmt;
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if (ctx->keymgmt->query_operation_name != NULL)
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supported_ciph =
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ctx->keymgmt->query_operation_name(OSSL_OP_ASYM_CIPHER);
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/*
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* If we didn't get a supported ciph, assume there is one with the
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* same name as the key type.
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*/
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if (supported_ciph == NULL)
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supported_ciph = ctx->keytype;
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/*
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* Because we cleared out old ops, we shouldn't need to worry about
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* checking if cipher is already there.
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*/
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cipher =
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EVP_ASYM_CIPHER_fetch(ctx->libctx, supported_ciph, ctx->propquery);
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if (cipher == NULL
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|| (EVP_KEYMGMT_get0_provider(ctx->keymgmt)
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!= EVP_ASYM_CIPHER_get0_provider(cipher))) {
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/*
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* We don't need to free ctx->keymgmt here, as it's not necessarily
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* tied to this operation. It will be freed by EVP_PKEY_CTX_free().
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*/
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EVP_ASYM_CIPHER_free(cipher);
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goto legacy;
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}
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/*
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* If we don't have the full support we need with provided methods,
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* let's go see if legacy does.
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*/
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ERR_pop_to_mark();
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/* No more legacy from here down to legacy: */
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ctx->op.ciph.cipher = cipher;
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ctx->op.ciph.algctx = cipher->newctx(ossl_provider_ctx(cipher->prov));
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if (ctx->op.ciph.algctx == NULL) {
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/* The provider key can stay in the cache */
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ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
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goto err;
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}
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switch (operation) {
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case EVP_PKEY_OP_ENCRYPT:
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if (cipher->encrypt_init == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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ret = -2;
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goto err;
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}
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ret = cipher->encrypt_init(ctx->op.ciph.algctx, provkey, params);
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break;
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case EVP_PKEY_OP_DECRYPT:
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if (cipher->decrypt_init == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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ret = -2;
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goto err;
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}
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ret = cipher->decrypt_init(ctx->op.ciph.algctx, provkey, params);
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break;
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default:
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ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
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goto err;
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}
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if (ret <= 0)
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goto err;
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return 1;
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legacy:
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/*
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* If we don't have the full support we need with provided methods,
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* let's go see if legacy does.
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*/
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ERR_pop_to_mark();
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if (ctx->pmeth == NULL || ctx->pmeth->encrypt == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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switch(ctx->operation) {
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case EVP_PKEY_OP_ENCRYPT:
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if (ctx->pmeth->encrypt_init == NULL)
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return 1;
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ret = ctx->pmeth->encrypt_init(ctx);
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break;
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case EVP_PKEY_OP_DECRYPT:
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if (ctx->pmeth->decrypt_init == NULL)
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return 1;
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ret = ctx->pmeth->decrypt_init(ctx);
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break;
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default:
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ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
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ret = -1;
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}
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err:
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if (ret <= 0) {
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evp_pkey_ctx_free_old_ops(ctx);
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ctx->operation = EVP_PKEY_OP_UNDEFINED;
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}
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return ret;
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}
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int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
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{
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return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_ENCRYPT, NULL);
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}
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int EVP_PKEY_encrypt_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[])
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{
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return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_ENCRYPT, params);
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}
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int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
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unsigned char *out, size_t *outlen,
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const unsigned char *in, size_t inlen)
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{
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int ret;
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if (ctx == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED);
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return -1;
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}
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if (ctx->op.ciph.algctx == NULL)
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goto legacy;
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ret = ctx->op.ciph.cipher->encrypt(ctx->op.ciph.algctx, out, outlen,
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(out == NULL ? 0 : *outlen), in, inlen);
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return ret;
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legacy:
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if (ctx->pmeth == NULL || ctx->pmeth->encrypt == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
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return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
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}
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int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
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{
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return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_DECRYPT, NULL);
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}
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int EVP_PKEY_decrypt_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[])
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{
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return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_DECRYPT, params);
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}
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int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
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unsigned char *out, size_t *outlen,
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const unsigned char *in, size_t inlen)
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{
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int ret;
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if (ctx == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED);
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return -1;
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}
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if (ctx->op.ciph.algctx == NULL)
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goto legacy;
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ret = ctx->op.ciph.cipher->decrypt(ctx->op.ciph.algctx, out, outlen,
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(out == NULL ? 0 : *outlen), in, inlen);
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return ret;
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legacy:
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if (ctx->pmeth == NULL || ctx->pmeth->decrypt == NULL) {
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ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
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return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
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}
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static EVP_ASYM_CIPHER *evp_asym_cipher_new(OSSL_PROVIDER *prov)
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{
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EVP_ASYM_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_ASYM_CIPHER));
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if (cipher == NULL) {
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ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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cipher->lock = CRYPTO_THREAD_lock_new();
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if (cipher->lock == NULL) {
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ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
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OPENSSL_free(cipher);
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return NULL;
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}
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cipher->prov = prov;
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ossl_provider_up_ref(prov);
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cipher->refcnt = 1;
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return cipher;
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}
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static void *evp_asym_cipher_from_algorithm(int name_id,
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const OSSL_ALGORITHM *algodef,
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OSSL_PROVIDER *prov)
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{
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const OSSL_DISPATCH *fns = algodef->implementation;
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EVP_ASYM_CIPHER *cipher = NULL;
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int ctxfncnt = 0, encfncnt = 0, decfncnt = 0;
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int gparamfncnt = 0, sparamfncnt = 0;
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if ((cipher = evp_asym_cipher_new(prov)) == NULL) {
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ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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cipher->name_id = name_id;
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if ((cipher->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL)
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goto err;
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cipher->description = algodef->algorithm_description;
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for (; fns->function_id != 0; fns++) {
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switch (fns->function_id) {
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case OSSL_FUNC_ASYM_CIPHER_NEWCTX:
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if (cipher->newctx != NULL)
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break;
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cipher->newctx = OSSL_FUNC_asym_cipher_newctx(fns);
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ctxfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_ENCRYPT_INIT:
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if (cipher->encrypt_init != NULL)
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break;
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cipher->encrypt_init = OSSL_FUNC_asym_cipher_encrypt_init(fns);
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encfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_ENCRYPT:
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if (cipher->encrypt != NULL)
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break;
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cipher->encrypt = OSSL_FUNC_asym_cipher_encrypt(fns);
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encfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_DECRYPT_INIT:
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if (cipher->decrypt_init != NULL)
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break;
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cipher->decrypt_init = OSSL_FUNC_asym_cipher_decrypt_init(fns);
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decfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_DECRYPT:
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if (cipher->decrypt != NULL)
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break;
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cipher->decrypt = OSSL_FUNC_asym_cipher_decrypt(fns);
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decfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_FREECTX:
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if (cipher->freectx != NULL)
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break;
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cipher->freectx = OSSL_FUNC_asym_cipher_freectx(fns);
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ctxfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_DUPCTX:
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if (cipher->dupctx != NULL)
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break;
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cipher->dupctx = OSSL_FUNC_asym_cipher_dupctx(fns);
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break;
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case OSSL_FUNC_ASYM_CIPHER_GET_CTX_PARAMS:
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if (cipher->get_ctx_params != NULL)
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break;
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cipher->get_ctx_params
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= OSSL_FUNC_asym_cipher_get_ctx_params(fns);
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gparamfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_GETTABLE_CTX_PARAMS:
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if (cipher->gettable_ctx_params != NULL)
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break;
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cipher->gettable_ctx_params
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= OSSL_FUNC_asym_cipher_gettable_ctx_params(fns);
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gparamfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_SET_CTX_PARAMS:
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if (cipher->set_ctx_params != NULL)
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break;
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cipher->set_ctx_params
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= OSSL_FUNC_asym_cipher_set_ctx_params(fns);
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sparamfncnt++;
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break;
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case OSSL_FUNC_ASYM_CIPHER_SETTABLE_CTX_PARAMS:
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if (cipher->settable_ctx_params != NULL)
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break;
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cipher->settable_ctx_params
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= OSSL_FUNC_asym_cipher_settable_ctx_params(fns);
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sparamfncnt++;
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break;
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}
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}
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if (ctxfncnt != 2
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|| (encfncnt != 0 && encfncnt != 2)
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|| (decfncnt != 0 && decfncnt != 2)
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|| (encfncnt != 2 && decfncnt != 2)
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|| (gparamfncnt != 0 && gparamfncnt != 2)
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|| (sparamfncnt != 0 && sparamfncnt != 2)) {
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/*
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* In order to be a consistent set of functions we must have at least
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* a set of context functions (newctx and freectx) as well as a pair of
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* "cipher" functions: (encrypt_init, encrypt) or
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* (decrypt_init decrypt). set_ctx_params and settable_ctx_params are
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* optional, but if one of them is present then the other one must also
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* be present. The same applies to get_ctx_params and
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* gettable_ctx_params. The dupctx function is optional.
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*/
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ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
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goto err;
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}
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return cipher;
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err:
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EVP_ASYM_CIPHER_free(cipher);
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return NULL;
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}
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void EVP_ASYM_CIPHER_free(EVP_ASYM_CIPHER *cipher)
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{
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int i;
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if (cipher == NULL)
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return;
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CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock);
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if (i > 0)
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return;
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OPENSSL_free(cipher->type_name);
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ossl_provider_free(cipher->prov);
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CRYPTO_THREAD_lock_free(cipher->lock);
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OPENSSL_free(cipher);
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}
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int EVP_ASYM_CIPHER_up_ref(EVP_ASYM_CIPHER *cipher)
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{
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int ref = 0;
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CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock);
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return 1;
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}
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OSSL_PROVIDER *EVP_ASYM_CIPHER_get0_provider(const EVP_ASYM_CIPHER *cipher)
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{
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return cipher->prov;
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}
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EVP_ASYM_CIPHER *EVP_ASYM_CIPHER_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
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const char *properties)
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{
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return evp_generic_fetch(ctx, OSSL_OP_ASYM_CIPHER, algorithm, properties,
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evp_asym_cipher_from_algorithm,
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(int (*)(void *))EVP_ASYM_CIPHER_up_ref,
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(void (*)(void *))EVP_ASYM_CIPHER_free);
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}
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int EVP_ASYM_CIPHER_is_a(const EVP_ASYM_CIPHER *cipher, const char *name)
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{
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return evp_is_a(cipher->prov, cipher->name_id, NULL, name);
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}
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int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher)
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{
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return cipher->name_id;
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}
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const char *EVP_ASYM_CIPHER_get0_name(const EVP_ASYM_CIPHER *cipher)
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{
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return cipher->type_name;
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}
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const char *EVP_ASYM_CIPHER_get0_description(const EVP_ASYM_CIPHER *cipher)
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{
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return cipher->description;
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}
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void EVP_ASYM_CIPHER_do_all_provided(OSSL_LIB_CTX *libctx,
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void (*fn)(EVP_ASYM_CIPHER *cipher,
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void *arg),
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void *arg)
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{
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evp_generic_do_all(libctx, OSSL_OP_ASYM_CIPHER,
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(void (*)(void *, void *))fn, arg,
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evp_asym_cipher_from_algorithm,
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(void (*)(void *))EVP_ASYM_CIPHER_free);
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}
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int EVP_ASYM_CIPHER_names_do_all(const EVP_ASYM_CIPHER *cipher,
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void (*fn)(const char *name, void *data),
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void *data)
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{
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if (cipher->prov != NULL)
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return evp_names_do_all(cipher->prov, cipher->name_id, fn, data);
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return 1;
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}
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const OSSL_PARAM *EVP_ASYM_CIPHER_gettable_ctx_params(const EVP_ASYM_CIPHER *cip)
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{
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void *provctx;
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if (cip == NULL || cip->gettable_ctx_params == NULL)
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return NULL;
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provctx = ossl_provider_ctx(EVP_ASYM_CIPHER_get0_provider(cip));
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return cip->gettable_ctx_params(NULL, provctx);
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}
|
|
|
|
const OSSL_PARAM *EVP_ASYM_CIPHER_settable_ctx_params(const EVP_ASYM_CIPHER *cip)
|
|
{
|
|
void *provctx;
|
|
|
|
if (cip == NULL || cip->settable_ctx_params == NULL)
|
|
return NULL;
|
|
|
|
provctx = ossl_provider_ctx(EVP_ASYM_CIPHER_get0_provider(cip));
|
|
return cip->settable_ctx_params(NULL, provctx);
|
|
}
|