Mirrors/openssl
0
0
Fork 0
mirror of https://github.com/openssl/openssl.git synced 2026-01-18 17:11:31 +01:00
Code Issues Packages Projects Releases Wiki Activity
Files
master
openssl/crypto/evp/pmeth_lib.c
Matt Caswell 00022fdfad Remove references to the pmeth field in an EVP_PKEY_CTX 
We don't set this field anymore so we should remove all usage of it.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Paul Yang <paulyang.inf@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/29384)
2025-12-18 10:57:38 +00:00

1382 lines
42 KiB
C
Raw Permalink Blame History

/*
* Copyright 2006-2025 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
*/
/*
* Low level key APIs (DH etc) are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <stdio.h>
#include <stdlib.h>
#include <openssl/evp.h>
#include <openssl/core_names.h>
#include <openssl/dh.h>
#include <openssl/rsa.h>
#include <openssl/kdf.h>
#include "internal/cryptlib.h"
#ifndef FIPS_MODULE
#include "crypto/asn1.h"
#endif
#include "crypto/evp.h"
#include "crypto/dh.h"
#include "crypto/ec.h"
#include "internal/ffc.h"
#include "internal/numbers.h"
#include "internal/provider.h"
#include "internal/common.h"
#include "evp_local.h"
#ifndef FIPS_MODULE
static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
int keytype, int optype,
int cmd, const char *name,
const void *data, size_t data_len);
static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
int cmd, const char *name);
static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
#endif /* FIPS_MODULE */
int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
{
if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
return EVP_PKEY_STATE_UNKNOWN;
if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
&& ctx->op.kex.algctx != NULL)
|| (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
&& ctx->op.sig.algctx != NULL)
|| (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
&& ctx->op.ciph.algctx != NULL)
|| (EVP_PKEY_CTX_IS_GEN_OP(ctx)
&& ctx->op.keymgmt.genctx != NULL)
|| (EVP_PKEY_CTX_IS_KEM_OP(ctx)
&& ctx->op.encap.algctx != NULL))
return EVP_PKEY_STATE_PROVIDER;
return EVP_PKEY_STATE_LEGACY;
}
static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
const char *keytype, const char *propquery,
int id)
{
EVP_PKEY_CTX *ret = NULL;
EVP_KEYMGMT *keymgmt = NULL;
/* Code below to be removed when legacy support is dropped. */
/* BEGIN legacy */
if (id == -1) {
if (pkey != NULL && !evp_pkey_is_provided(pkey)) {
id = pkey->type;
} else {
if (pkey != NULL) {
/* Must be provided if we get here */
keytype = EVP_KEYMGMT_get0_name(pkey->keymgmt);
}
#ifndef FIPS_MODULE
if (keytype != NULL) {
id = evp_pkey_name2type(keytype);
if (id == NID_undef)
id = -1;
}
#endif
}
}
#ifndef FIPS_MODULE
/*
* Here, we extract what information we can for the purpose of
* supporting usage with implementations from providers, to make
* for a smooth transition from legacy stuff to provider based stuff.
*/
if (id != -1)
keytype = OBJ_nid2sn(id);
/* END legacy */
#endif /* FIPS_MODULE */
/* We try fetching a provider implementation. */
if (keytype != NULL) {
/*
* If |pkey| is given and is provided, we take a reference to its
* keymgmt. Otherwise, we fetch one for the keytype we got. This
* is to ensure that operation init functions can access what they
* need through this single pointer.
*/
if (pkey != NULL && pkey->keymgmt != NULL) {
if (!EVP_KEYMGMT_up_ref(pkey->keymgmt))
ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
else
keymgmt = pkey->keymgmt;
} else {
keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
}
if (keymgmt == NULL)
return NULL; /* EVP_KEYMGMT_fetch() recorded an error */
#ifndef FIPS_MODULE
/*
* Chase down the legacy NID, as that might be needed for diverse
* purposes, such as ensure that EVP_PKEY_type() can return sensible
* values. We go through all keymgmt names, because the keytype
* that's passed to this function doesn't necessarily translate
* directly.
*/
if (keymgmt != NULL) {
int tmp_id = evp_keymgmt_get_legacy_alg(keymgmt);
if (tmp_id != NID_undef) {
if (id == -1) {
id = tmp_id;
} else {
/*
* It really really shouldn't differ. If it still does,
* something is very wrong.
*/
if (!ossl_assert(id == tmp_id)) {
ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
EVP_KEYMGMT_free(keymgmt);
return NULL;
}
}
}
}
#endif
}
if (keymgmt == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
} else {
ret = OPENSSL_zalloc(sizeof(*ret));
}
if (ret == NULL) {
EVP_KEYMGMT_free(keymgmt);
return NULL;
}
if (propquery != NULL) {
ret->propquery = OPENSSL_strdup(propquery);
if (ret->propquery == NULL) {
OPENSSL_free(ret);
EVP_KEYMGMT_free(keymgmt);
return NULL;
}
}
ret->libctx = libctx;
ret->keytype = keytype;
ret->keymgmt = keymgmt;
ret->legacy_keytype = id;
ret->operation = EVP_PKEY_OP_UNDEFINED;
if (pkey != NULL && !EVP_PKEY_up_ref(pkey)) {
EVP_PKEY_CTX_free(ret);
return NULL;
}
ret->pkey = pkey;
return ret;
}
/*- All methods below can also be used in FIPS_MODULE */
EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
const char *name,
const char *propquery)
{
return int_ctx_new(libctx, NULL, name, propquery, -1);
}
EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
const char *propquery)
{
return int_ctx_new(libctx, pkey, NULL, propquery, -1);
}
void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
{
if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
if (ctx->op.sig.algctx != NULL && ctx->op.sig.signature != NULL)
ctx->op.sig.signature->freectx(ctx->op.sig.algctx);
EVP_SIGNATURE_free(ctx->op.sig.signature);
ctx->op.sig.algctx = NULL;
ctx->op.sig.signature = NULL;
} else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
if (ctx->op.kex.algctx != NULL && ctx->op.kex.exchange != NULL)
ctx->op.kex.exchange->freectx(ctx->op.kex.algctx);
EVP_KEYEXCH_free(ctx->op.kex.exchange);
ctx->op.kex.algctx = NULL;
ctx->op.kex.exchange = NULL;
} else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
if (ctx->op.encap.algctx != NULL && ctx->op.encap.kem != NULL)
ctx->op.encap.kem->freectx(ctx->op.encap.algctx);
EVP_KEM_free(ctx->op.encap.kem);
ctx->op.encap.algctx = NULL;
ctx->op.encap.kem = NULL;
} else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
if (ctx->op.ciph.algctx != NULL && ctx->op.ciph.cipher != NULL)
ctx->op.ciph.cipher->freectx(ctx->op.ciph.algctx);
EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
ctx->op.ciph.algctx = NULL;
ctx->op.ciph.cipher = NULL;
} else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
}
}
void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
{
if (ctx == NULL)
return;
evp_pkey_ctx_free_old_ops(ctx);
#ifndef FIPS_MODULE
evp_pkey_ctx_free_all_cached_data(ctx);
#endif
EVP_KEYMGMT_free(ctx->keymgmt);
OPENSSL_free(ctx->propquery);
EVP_PKEY_free(ctx->pkey);
EVP_PKEY_free(ctx->peerkey);
BN_free(ctx->rsa_pubexp);
OPENSSL_free(ctx);
}
#ifndef FIPS_MODULE
EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
{
if (!ossl_assert(e == NULL))
return NULL;
return int_ctx_new(NULL, pkey, NULL, NULL, -1);
}
EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
{
if (!ossl_assert(e == NULL))
return NULL;
return int_ctx_new(NULL, NULL, NULL, NULL, id);
}
EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
{
EVP_PKEY_CTX *rctx;
rctx = OPENSSL_zalloc(sizeof(*rctx));
if (rctx == NULL)
return NULL;
if (pctx->pkey != NULL && !EVP_PKEY_up_ref(pctx->pkey))
goto err;
rctx->pkey = pctx->pkey;
rctx->operation = pctx->operation;
rctx->libctx = pctx->libctx;
rctx->keytype = pctx->keytype;
rctx->propquery = NULL;
if (pctx->propquery != NULL) {
rctx->propquery = OPENSSL_strdup(pctx->propquery);
if (rctx->propquery == NULL)
goto err;
}
rctx->legacy_keytype = pctx->legacy_keytype;
if (pctx->keymgmt != NULL) {
if (!EVP_KEYMGMT_up_ref(pctx->keymgmt))
goto err;
rctx->keymgmt = pctx->keymgmt;
}
if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
if (pctx->op.kex.exchange != NULL) {
rctx->op.kex.exchange = pctx->op.kex.exchange;
if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
goto err;
}
if (pctx->op.kex.algctx != NULL) {
if (!ossl_assert(pctx->op.kex.exchange != NULL))
goto err;
if (pctx->op.kex.exchange->dupctx != NULL)
rctx->op.kex.algctx
= pctx->op.kex.exchange->dupctx(pctx->op.kex.algctx);
if (rctx->op.kex.algctx == NULL) {
EVP_KEYEXCH_free(rctx->op.kex.exchange);
rctx->op.kex.exchange = NULL;
goto err;
}
return rctx;
}
} else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
if (pctx->op.sig.signature != NULL) {
rctx->op.sig.signature = pctx->op.sig.signature;
if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
goto err;
}
if (pctx->op.sig.algctx != NULL) {
if (!ossl_assert(pctx->op.sig.signature != NULL))
goto err;
if (pctx->op.sig.signature->dupctx != NULL)
rctx->op.sig.algctx
= pctx->op.sig.signature->dupctx(pctx->op.sig.algctx);
if (rctx->op.sig.algctx == NULL) {
EVP_SIGNATURE_free(rctx->op.sig.signature);
rctx->op.sig.signature = NULL;
goto err;
}
return rctx;
}
} else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
if (pctx->op.ciph.cipher != NULL) {
rctx->op.ciph.cipher = pctx->op.ciph.cipher;
if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
goto err;
}
if (pctx->op.ciph.algctx != NULL) {
if (!ossl_assert(pctx->op.ciph.cipher != NULL))
goto err;
if (pctx->op.ciph.cipher->dupctx != NULL)
rctx->op.ciph.algctx
= pctx->op.ciph.cipher->dupctx(pctx->op.ciph.algctx);
if (rctx->op.ciph.algctx == NULL) {
EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
rctx->op.ciph.cipher = NULL;
goto err;
}
return rctx;
}
} else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
if (pctx->op.encap.kem != NULL) {
rctx->op.encap.kem = pctx->op.encap.kem;
if (!EVP_KEM_up_ref(rctx->op.encap.kem))
goto err;
}
if (pctx->op.encap.algctx != NULL) {
if (!ossl_assert(pctx->op.encap.kem != NULL))
goto err;
if (pctx->op.encap.kem->dupctx != NULL)
rctx->op.encap.algctx
= pctx->op.encap.kem->dupctx(pctx->op.encap.algctx);
if (rctx->op.encap.algctx == NULL) {
EVP_KEM_free(rctx->op.encap.kem);
rctx->op.encap.kem = NULL;
goto err;
}
return rctx;
}
} else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
/* Not supported - This would need a gen_dupctx() to work */
goto err;
}
if (pctx->peerkey != NULL && !EVP_PKEY_up_ref(pctx->peerkey))
goto err;
rctx->peerkey = pctx->peerkey;
if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
void *provkey;
if (pctx->pkey == NULL)
return rctx;
provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
&tmp_keymgmt, pctx->propquery);
if (provkey == NULL)
goto err;
if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
goto err;
EVP_KEYMGMT_free(rctx->keymgmt);
rctx->keymgmt = tmp_keymgmt;
return rctx;
}
err:
EVP_PKEY_CTX_free(rctx);
return NULL;
}
#endif
int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
{
#ifndef FIPS_MODULE
if (evp_pkey_ctx_is_legacy(ctx))
return (ctx->legacy_keytype == evp_pkey_name2type(keytype));
#endif
return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
}
int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params)
{
switch (evp_pkey_ctx_state(ctx)) {
case EVP_PKEY_STATE_PROVIDER:
if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
&& ctx->op.kex.exchange != NULL
&& ctx->op.kex.exchange->set_ctx_params != NULL)
return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.algctx,
params);
if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
&& ctx->op.sig.signature != NULL
&& ctx->op.sig.signature->set_ctx_params != NULL)
return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.algctx,
params);
if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
&& ctx->op.ciph.cipher != NULL
&& ctx->op.ciph.cipher->set_ctx_params != NULL)
return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.algctx,
params);
if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
&& ctx->keymgmt != NULL
&& ctx->keymgmt->gen_set_params != NULL)
return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
params);
if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
&& ctx->op.encap.kem != NULL
&& ctx->op.encap.kem->set_ctx_params != NULL)
return ctx->op.encap.kem->set_ctx_params(ctx->op.encap.algctx,
params);
break;
case EVP_PKEY_STATE_UNKNOWN:
break;
#ifndef FIPS_MODULE
case EVP_PKEY_STATE_LEGACY:
return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
#endif
}
return 0;
}
int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
{
switch (evp_pkey_ctx_state(ctx)) {
case EVP_PKEY_STATE_PROVIDER:
if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
&& ctx->op.kex.exchange != NULL
&& ctx->op.kex.exchange->get_ctx_params != NULL)
return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.algctx,
params);
if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
&& ctx->op.sig.signature != NULL
&& ctx->op.sig.signature->get_ctx_params != NULL)
return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.algctx,
params);
if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
&& ctx->op.ciph.cipher != NULL
&& ctx->op.ciph.cipher->get_ctx_params != NULL)
return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.algctx,
params);
if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
&& ctx->op.encap.kem != NULL
&& ctx->op.encap.kem->get_ctx_params != NULL)
return ctx->op.encap.kem->get_ctx_params(ctx->op.encap.algctx,
params);
if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
&& ctx->keymgmt != NULL
&& ctx->keymgmt->gen_get_params != NULL)
return evp_keymgmt_gen_get_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
params);
break;
case EVP_PKEY_STATE_UNKNOWN:
break;
#ifndef FIPS_MODULE
case EVP_PKEY_STATE_LEGACY:
return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
#endif
}
ERR_raise_data(ERR_LIB_EVP, EVP_R_PROVIDER_GET_CTX_PARAMS_NOT_SUPPORTED,
"EVP_PKEY_OP=0x%x", ctx->operation);
return 0;
}
#ifndef FIPS_MODULE
const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX *ctx)
{
void *provctx;
if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
&& ctx->op.kex.exchange != NULL
&& ctx->op.kex.exchange->gettable_ctx_params != NULL) {
provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
return ctx->op.kex.exchange->gettable_ctx_params(ctx->op.kex.algctx,
provctx);
}
if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
&& ctx->op.sig.signature != NULL
&& ctx->op.sig.signature->gettable_ctx_params != NULL) {
provctx = ossl_provider_ctx(
EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
return ctx->op.sig.signature->gettable_ctx_params(ctx->op.sig.algctx,
provctx);
}
if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
&& ctx->op.ciph.cipher != NULL
&& ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
provctx = ossl_provider_ctx(
EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
return ctx->op.ciph.cipher->gettable_ctx_params(ctx->op.ciph.algctx,
provctx);
}
if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
&& ctx->op.encap.kem != NULL
&& ctx->op.encap.kem->gettable_ctx_params != NULL) {
provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
return ctx->op.encap.kem->gettable_ctx_params(ctx->op.encap.algctx,
provctx);
}
if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
&& ctx->keymgmt != NULL
&& ctx->keymgmt->gen_gettable_params != NULL) {
provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(ctx->keymgmt));
return ctx->keymgmt->gen_gettable_params(ctx->op.keymgmt.genctx,
provctx);
}
return NULL;
}
const OSSL_PARAM *EVP_PKEY_CTX_settable_params(const EVP_PKEY_CTX *ctx)
{
void *provctx;
if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
&& ctx->op.kex.exchange != NULL
&& ctx->op.kex.exchange->settable_ctx_params != NULL) {
provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
return ctx->op.kex.exchange->settable_ctx_params(ctx->op.kex.algctx,
provctx);
}
if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
&& ctx->op.sig.signature != NULL
&& ctx->op.sig.signature->settable_ctx_params != NULL) {
provctx = ossl_provider_ctx(
EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
return ctx->op.sig.signature->settable_ctx_params(ctx->op.sig.algctx,
provctx);
}
if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
&& ctx->op.ciph.cipher != NULL
&& ctx->op.ciph.cipher->settable_ctx_params != NULL) {
provctx = ossl_provider_ctx(
EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
return ctx->op.ciph.cipher->settable_ctx_params(ctx->op.ciph.algctx,
provctx);
}
if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
&& ctx->keymgmt != NULL
&& ctx->keymgmt->gen_settable_params != NULL) {
provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(ctx->keymgmt));
return ctx->keymgmt->gen_settable_params(ctx->op.keymgmt.genctx,
provctx);
}
if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
&& ctx->op.encap.kem != NULL
&& ctx->op.encap.kem->settable_ctx_params != NULL) {
provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
return ctx->op.encap.kem->settable_ctx_params(ctx->op.encap.algctx,
provctx);
}
return NULL;
}
/*
* Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
*
* Return 1 on success, 0 or negative for errors.
*
* In particular they return -2 if any of the params is not supported.
*
* They are not available in FIPS_MODULE as they depend on
* - EVP_PKEY_CTX_{get,set}_params()
* - EVP_PKEY_CTX_{gettable,settable}_params()
*
*/
int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
{
if (ctx == NULL || params == NULL)
return 0;
/*
* We only check for provider side EVP_PKEY_CTX. For #legacy, we
* depend on the translation that happens in EVP_PKEY_CTX_set_params()
* call, and that the resulting ctrl call will return -2 if it doesn't
* known the ctrl command number.
*/
if (evp_pkey_ctx_is_provided(ctx)) {
const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
const OSSL_PARAM *p;
for (p = params; p->key != NULL; p++) {
/* Check the ctx actually understands this parameter */
if (OSSL_PARAM_locate_const(settable, p->key) == NULL)
return -2;
}
}
return EVP_PKEY_CTX_set_params(ctx, params);
}
int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
{
if (ctx == NULL || params == NULL)
return 0;
/*
* We only check for provider side EVP_PKEY_CTX. For #legacy, we
* depend on the translation that happens in EVP_PKEY_CTX_get_params()
* call, and that the resulting ctrl call will return -2 if it doesn't
* known the ctrl command number.
*/
if (evp_pkey_ctx_is_provided(ctx)) {
const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
const OSSL_PARAM *p;
for (p = params; p->key != NULL; p++) {
/* Check the ctx actually understands this parameter */
if (OSSL_PARAM_locate_const(gettable, p->key) == NULL)
return -2;
}
}
return EVP_PKEY_CTX_get_params(ctx, params);
}
int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
{
OSSL_PARAM sig_md_params[2], *p = sig_md_params;
/* 80 should be big enough */
char name[80] = "";
const EVP_MD *tmp;
if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
if (ctx->op.sig.algctx == NULL)
return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
name,
sizeof(name));
*p = OSSL_PARAM_construct_end();
if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
return 0;
tmp = evp_get_digestbyname_ex(ctx->libctx, name);
if (tmp == NULL)
return 0;
*md = tmp;
return 1;
}
static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
int fallback, const char *param, int op,
int ctrl)
{
OSSL_PARAM md_params[2], *p = md_params;
const char *name;
if (ctx == NULL || (ctx->operation & op) == 0) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
if (fallback)
return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
if (md == NULL) {
name = "";
} else {
name = EVP_MD_get0_name(md);
}
*p++ = OSSL_PARAM_construct_utf8_string(param,
/*
* Cast away the const. This is read
* only so should be safe
*/
(char *)name, 0);
*p = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, md_params);
}
int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
{
return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.algctx == NULL,
OSSL_SIGNATURE_PARAM_DIGEST,
EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
}
int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
{
return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_DIGEST,
EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
}
static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
const char *param, int op, int ctrl,
const unsigned char *data,
int datalen)
{
OSSL_PARAM octet_string_params[2], *p = octet_string_params;
if (ctx == NULL || (ctx->operation & op) == 0) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
/* Code below to be removed when legacy support is dropped. */
if (fallback)
return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
/* end of legacy support */
if (datalen < 0) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
return 0;
}
*p++ = OSSL_PARAM_construct_octet_string(param,
/*
* Cast away the const. This is read
* only so should be safe
*/
(unsigned char *)data,
(size_t)datalen);
*p = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
}
static int evp_pkey_ctx_add1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
const char *param, int op, int ctrl,
const unsigned char *data,
int datalen)
{
OSSL_PARAM os_params[2];
const OSSL_PARAM *gettables;
unsigned char *info = NULL;
size_t info_len = 0;
size_t info_alloc = 0;
int ret = 0;
if (ctx == NULL || (ctx->operation & op) == 0) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
/* Code below to be removed when legacy support is dropped. */
if (fallback)
return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
/* end of legacy support */
if (datalen < 0) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
return 0;
} else if (datalen == 0) {
return 1;
}
/* Check for older provider that doesn't support getting this parameter */
gettables = EVP_PKEY_CTX_gettable_params(ctx);
if (gettables == NULL || OSSL_PARAM_locate_const(gettables, param) == NULL)
return evp_pkey_ctx_set1_octet_string(ctx, fallback, param, op, ctrl,
data, datalen);
/* Get the original value length */
os_params[0] = OSSL_PARAM_construct_octet_string(param, NULL, 0);
os_params[1] = OSSL_PARAM_construct_end();
if (!EVP_PKEY_CTX_get_params(ctx, os_params))
return 0;
/* This should not happen but check to be sure. */
if (os_params[0].return_size == OSSL_PARAM_UNMODIFIED)
return 0;
info_alloc = os_params[0].return_size + datalen;
if (info_alloc == 0)
return 0;
info = OPENSSL_zalloc(info_alloc);
if (info == NULL)
return 0;
info_len = os_params[0].return_size;
os_params[0] = OSSL_PARAM_construct_octet_string(param, info, info_alloc);
/* if we have data, then go get it */
if (info_len > 0) {
if (!EVP_PKEY_CTX_get_params(ctx, os_params))
goto error;
}
/* Copy the input data */
memcpy(&info[info_len], data, datalen);
ret = EVP_PKEY_CTX_set_params(ctx, os_params);
error:
OPENSSL_clear_free(info, info_alloc);
return ret;
}
int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
const unsigned char *sec, int seclen)
{
return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_SECRET,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_TLS_SECRET,
sec, seclen);
}
int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
const unsigned char *seed, int seedlen)
{
return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_SEED,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_TLS_SEED,
seed, seedlen);
}
int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
{
return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_DIGEST,
EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
}
int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
const unsigned char *salt, int saltlen)
{
return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_SALT,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_SALT,
salt, saltlen);
}
int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
const unsigned char *key, int keylen)
{
return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_KEY,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_KEY,
key, keylen);
}
int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
const unsigned char *info, int infolen)
{
return evp_pkey_ctx_add1_octet_string(ctx, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_INFO,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_INFO,
info, infolen);
}
int EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
{
OSSL_PARAM int_params[2], *p = int_params;
if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
/* Code below to be removed when legacy support is dropped. */
if (ctx->op.kex.algctx == NULL)
return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
/* end of legacy support */
if (mode < 0) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
return 0;
}
*p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
*p = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, int_params);
}
int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
int passlen)
{
return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_PASSWORD,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_PASS,
(const unsigned char *)pass, passlen);
}
int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
const unsigned char *salt, int saltlen)
{
return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
OSSL_KDF_PARAM_SALT,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_SCRYPT_SALT,
salt, saltlen);
}
static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
int op, int ctrl, uint64_t val)
{
OSSL_PARAM uint64_params[2], *p = uint64_params;
if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
/* Code below to be removed when legacy support is dropped. */
if (ctx->op.kex.algctx == NULL)
return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
/* end of legacy support */
*p++ = OSSL_PARAM_construct_uint64(param, &val);
*p = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, uint64_params);
}
int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
{
return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
n);
}
int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
{
return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
r);
}
int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
{
return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
p);
}
int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
uint64_t maxmem_bytes)
{
return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
maxmem_bytes);
}
int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
int keylen)
{
return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
OSSL_PKEY_PARAM_PRIV_KEY,
EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_SET_MAC_KEY,
key, keylen);
}
int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
{
OSSL_PARAM params[2], *p = params;
if (ctx == NULL || op == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
return 0;
}
if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
(char *)op, 0);
*p = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, params);
}
int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
{
return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
EVP_PKEY_CTRL_SET1_ID, (int)len, (void *)(id));
}
int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
{
return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void *)id);
}
int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
{
return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void *)id_len);
}
static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
int cmd, int p1, void *p2)
{
int ret = 0;
if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
return -1;
}
if ((optype != -1) && !(ctx->operation & optype)) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
return -1;
}
switch (evp_pkey_ctx_state(ctx)) {
case EVP_PKEY_STATE_PROVIDER:
return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
case EVP_PKEY_STATE_UNKNOWN:
case EVP_PKEY_STATE_LEGACY:
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
return ret;
}
int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
int cmd, int p1, void *p2)
{
int ret = 0;
if (ctx == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
/* If unsupported, we don't want that reported here */
ERR_set_mark();
ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
cmd, NULL, p2, p1);
if (ret == -2) {
ERR_pop_to_mark();
} else {
ERR_clear_last_mark();
/*
* If there was an error, there was an error.
* If the operation isn't initialized yet, we also return, as
* the saved values will be used then anyway.
*/
if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
return ret;
}
return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
}
int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
int cmd, uint64_t value)
{
return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
}
static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
const char *name, const char *value)
{
int ret = 0;
if (ctx == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
switch (evp_pkey_ctx_state(ctx)) {
case EVP_PKEY_STATE_PROVIDER:
return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
case EVP_PKEY_STATE_UNKNOWN:
case EVP_PKEY_STATE_LEGACY:
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
return ret;
}
int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
const char *name, const char *value)
{
int ret = 0;
/* If unsupported, we don't want that reported here */
ERR_set_mark();
ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
name, value, strlen(value) + 1);
if (ret == -2) {
ERR_pop_to_mark();
} else {
ERR_clear_last_mark();
/*
* If there was an error, there was an error.
* If the operation isn't initialized yet, we also return, as
* the saved values will be used then anyway.
*/
if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
return ret;
}
return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
}
static int decode_cmd(int cmd, const char *name)
{
if (cmd == -1) {
/*
* The consequence of the assertion not being true is that this
* function will return -1, which will cause the calling functions
* to signal that the command is unsupported... in non-debug mode.
*/
if (ossl_assert(name != NULL))
if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
cmd = EVP_PKEY_CTRL_SET1_ID;
}
return cmd;
}
static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
int keytype, int optype,
int cmd, const char *name,
const void *data, size_t data_len)
{
/*
* Check that it's one of the supported commands. The ctrl commands
* number cases here must correspond to the cases in the bottom switch
* in this function.
*/
switch (cmd = decode_cmd(cmd, name)) {
case EVP_PKEY_CTRL_SET1_ID:
break;
default:
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
if (keytype != -1) {
switch (evp_pkey_ctx_state(ctx)) {
case EVP_PKEY_STATE_PROVIDER:
if (ctx->keymgmt == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
evp_pkey_type2name(keytype))) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
return -1;
}
break;
case EVP_PKEY_STATE_UNKNOWN:
case EVP_PKEY_STATE_LEGACY:
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
}
if (optype != -1 && (ctx->operation & optype) == 0) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
return -1;
}
switch (cmd) {
case EVP_PKEY_CTRL_SET1_ID:
evp_pkey_ctx_free_cached_data(ctx, cmd, name);
if (name != NULL) {
ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
if (ctx->cached_parameters.dist_id_name == NULL)
return 0;
}
if (data_len > 0) {
ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
if (ctx->cached_parameters.dist_id == NULL)
return 0;
}
ctx->cached_parameters.dist_id_set = 1;
ctx->cached_parameters.dist_id_len = data_len;
break;
}
return 1;
}
static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
int cmd, const char *name)
{
cmd = decode_cmd(cmd, name);
switch (cmd) {
case EVP_PKEY_CTRL_SET1_ID:
OPENSSL_free(ctx->cached_parameters.dist_id);
OPENSSL_free(ctx->cached_parameters.dist_id_name);
ctx->cached_parameters.dist_id = NULL;
ctx->cached_parameters.dist_id_name = NULL;
break;
}
}
static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
{
evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
}
int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
{
int ret = 1;
if (ret && ctx->cached_parameters.dist_id_set) {
const char *name = ctx->cached_parameters.dist_id_name;
const void *val = ctx->cached_parameters.dist_id;
size_t len = ctx->cached_parameters.dist_id_len;
if (name != NULL)
ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
else
ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
EVP_PKEY_CTRL_SET1_ID,
(int)len, (void *)val);
}
return ret;
}
OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
{
return ctx->libctx;
}
const char *EVP_PKEY_CTX_get0_propq(const EVP_PKEY_CTX *ctx)
{
return ctx->propquery;
}
const OSSL_PROVIDER *EVP_PKEY_CTX_get0_provider(const EVP_PKEY_CTX *ctx)
{
if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
if (ctx->op.sig.signature != NULL)
return EVP_SIGNATURE_get0_provider(ctx->op.sig.signature);
} else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
if (ctx->op.kex.exchange != NULL)
return EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange);
} else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
if (ctx->op.encap.kem != NULL)
return EVP_KEM_get0_provider(ctx->op.encap.kem);
} else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
if (ctx->op.ciph.cipher != NULL)
return EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher);
} else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
if (ctx->keymgmt != NULL)
return EVP_KEYMGMT_get0_provider(ctx->keymgmt);
}
return NULL;
}
/* Utility functions to send a string of hex string to a ctrl */
int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
{
size_t len;
len = strlen(str);
if (len > INT_MAX)
return -1;
return EVP_PKEY_CTX_ctrl(ctx, -1, -1, cmd, (int)len, (void *)str);
}
int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
{
unsigned char *bin;
long binlen;
int rv = -1;
bin = OPENSSL_hexstr2buf(hex, &binlen);
if (bin == NULL)
return 0;
if (binlen <= INT_MAX)
rv = EVP_PKEY_CTX_ctrl(ctx, -1, -1, cmd, binlen, bin);
OPENSSL_free(bin);
return rv;
}
/* Pass a message digest to a ctrl */
int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
{
const EVP_MD *m;
if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
return 0;
}
return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
}
int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
{
return ctx->operation;
}
void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
{
ctx->keygen_info = dat;
ctx->keygen_info_count = datlen;
}
void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
{
ctx->data = data;
}
void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
{
return ctx->data;
}
EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
{
return ctx->pkey;
}
EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
{
return ctx->peerkey;
}
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;
}
#endif /* FIPS_MODULE */
Reference in New Issue View Git Blame Copy Permalink