/*
* Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * 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 "internal/cryptlib.h"
#include <openssl/objects.h>
#include <openssl/evp.h>
+#include "internal/cryptlib.h"
#include "internal/evp_int.h"
+#include "internal/provider.h"
+#include "evp_locl.h"
+
+static EVP_SIGNATURE *evp_signature_new(OSSL_PROVIDER *prov)
+{
+ EVP_SIGNATURE *signature = OPENSSL_zalloc(sizeof(EVP_SIGNATURE));
-#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 (pksize == 0) \
- { \
- EVPerr(err, EVP_R_INVALID_KEY); /*ckerr_ignore*/\
- return 0; \
- } \
- else if (!arg) \
- { \
- *arglen = pksize; \
- return 1; \
- } \
- else if (*arglen < pksize) \
- { \
- EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\
- return 0; \
- } \
- }
+ signature->lock = CRYPTO_THREAD_lock_new();
+ if (signature->lock == NULL) {
+ OPENSSL_free(signature);
+ return NULL;
+ }
+ signature->prov = prov;
+ ossl_provider_up_ref(prov);
+ signature->refcnt = 1;
-int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
+ return signature;
+}
+
+static void *evp_signature_from_dispatch(const char *name,
+ const OSSL_DISPATCH *fns,
+ OSSL_PROVIDER *prov,
+ void *vkeymgmt_data)
{
- int ret;
- if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
- EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ /*
+ * Signature functions cannot work without a key, and key management
+ * from the same provider to manage its keys. We therefore fetch
+ * a key management method using the same algorithm and properties
+ * and pass that down to evp_generic_fetch to be passed on to our
+ * evp_signature_from_dispatch, which will attach the key management
+ * method to the newly created key exchange method as long as the
+ * provider matches.
+ */
+ struct keymgmt_data_st *keymgmt_data = vkeymgmt_data;
+ EVP_KEYMGMT *keymgmt = EVP_KEYMGMT_fetch(keymgmt_data->ctx, name,
+ keymgmt_data->properties);
+ EVP_SIGNATURE *signature = NULL;
+ int ctxfncnt = 0, signfncnt = 0, verifyfncnt = 0, verifyrecfncnt = 0;
+ int gparamfncnt = 0, sparamfncnt = 0;
+
+ if (keymgmt == NULL || EVP_KEYMGMT_provider(keymgmt) != prov) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_NO_KEYMGMT_AVAILABLE);
+ goto err;
+ }
+
+ if ((signature = evp_signature_new(prov)) == NULL
+ || (signature->name = OPENSSL_strdup(name)) == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ signature->keymgmt = keymgmt;
+ keymgmt = NULL; /* avoid double free on failure below */
+
+ for (; fns->function_id != 0; fns++) {
+ switch (fns->function_id) {
+ case OSSL_FUNC_SIGNATURE_NEWCTX:
+ if (signature->newctx != NULL)
+ break;
+ signature->newctx = OSSL_get_OP_signature_newctx(fns);
+ ctxfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_SIGN_INIT:
+ if (signature->sign_init != NULL)
+ break;
+ signature->sign_init = OSSL_get_OP_signature_sign_init(fns);
+ signfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_SIGN:
+ if (signature->sign != NULL)
+ break;
+ signature->sign = OSSL_get_OP_signature_sign(fns);
+ signfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_VERIFY_INIT:
+ if (signature->verify_init != NULL)
+ break;
+ signature->verify_init = OSSL_get_OP_signature_verify_init(fns);
+ verifyfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_VERIFY:
+ if (signature->verify != NULL)
+ break;
+ signature->verify = OSSL_get_OP_signature_verify(fns);
+ verifyfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_VERIFY_RECOVER_INIT:
+ if (signature->verify_recover_init != NULL)
+ break;
+ signature->verify_recover_init
+ = OSSL_get_OP_signature_verify_recover_init(fns);
+ verifyrecfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_VERIFY_RECOVER:
+ if (signature->verify_recover != NULL)
+ break;
+ signature->verify_recover
+ = OSSL_get_OP_signature_verify_recover(fns);
+ verifyrecfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_FREECTX:
+ if (signature->freectx != NULL)
+ break;
+ signature->freectx = OSSL_get_OP_signature_freectx(fns);
+ ctxfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_DUPCTX:
+ if (signature->dupctx != NULL)
+ break;
+ signature->dupctx = OSSL_get_OP_signature_dupctx(fns);
+ break;
+ case OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS:
+ if (signature->get_ctx_params != NULL)
+ break;
+ signature->get_ctx_params
+ = OSSL_get_OP_signature_get_ctx_params(fns);
+ gparamfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS:
+ if (signature->gettable_ctx_params != NULL)
+ break;
+ signature->gettable_ctx_params
+ = OSSL_get_OP_signature_gettable_ctx_params(fns);
+ gparamfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS:
+ if (signature->set_ctx_params != NULL)
+ break;
+ signature->set_ctx_params
+ = OSSL_get_OP_signature_set_ctx_params(fns);
+ sparamfncnt++;
+ break;
+ case OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS:
+ if (signature->settable_ctx_params != NULL)
+ break;
+ signature->settable_ctx_params
+ = OSSL_get_OP_signature_settable_ctx_params(fns);
+ sparamfncnt++;
+ break;
+ }
+ }
+ if (ctxfncnt != 2
+ || (signfncnt != 2 && verifyfncnt != 2 && verifyrecfncnt != 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
+ * "signature" functions: (sign_init, sign) or (verify_init verify) or
+ * (verify_recover_init, verify_recover). 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 signature;
+ err:
+ EVP_SIGNATURE_free(signature);
+ EVP_KEYMGMT_free(keymgmt);
+ return NULL;
+}
+
+void EVP_SIGNATURE_free(EVP_SIGNATURE *signature)
+{
+ if (signature != NULL) {
+ int i;
+
+ CRYPTO_DOWN_REF(&signature->refcnt, &i, signature->lock);
+ if (i > 0)
+ return;
+ EVP_KEYMGMT_free(signature->keymgmt);
+ ossl_provider_free(signature->prov);
+ OPENSSL_free(signature->name);
+ CRYPTO_THREAD_lock_free(signature->lock);
+ OPENSSL_free(signature);
+ }
+}
+
+int EVP_SIGNATURE_up_ref(EVP_SIGNATURE *signature)
+{
+ int ref = 0;
+
+ CRYPTO_UP_REF(&signature->refcnt, &ref, signature->lock);
+ return 1;
+}
+
+OSSL_PROVIDER *EVP_SIGNATURE_provider(const EVP_SIGNATURE *signature)
+{
+ return signature->prov;
+}
+
+EVP_SIGNATURE *EVP_SIGNATURE_fetch(OPENSSL_CTX *ctx, const char *algorithm,
+ const char *properties)
+{
+ struct keymgmt_data_st keymgmt_data;
+
+ /*
+ * A signature operation cannot work without a key, so we need key
+ * management from the same provider to manage its keys.
+ */
+ keymgmt_data.ctx = ctx;
+ keymgmt_data.properties = properties;
+ return evp_generic_fetch(ctx, OSSL_OP_SIGNATURE, algorithm, properties,
+ evp_signature_from_dispatch, &keymgmt_data,
+ (int (*)(void *))EVP_SIGNATURE_up_ref,
+ (void (*)(void *))EVP_SIGNATURE_free);
+}
+
+static int evp_pkey_signature_init(EVP_PKEY_CTX *ctx, EVP_SIGNATURE *signature,
+ int operation)
+{
+ int ret = 0;
+ void *provkey = NULL;
+
+ if (ctx == NULL) {
+ EVPerr(0, 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);
+
+ evp_pkey_ctx_free_old_ops(ctx);
+ ctx->operation = operation;
+
+ if (ctx->engine != NULL)
+ goto legacy;
+
+ if (signature != NULL) {
+ if (!EVP_SIGNATURE_up_ref(signature))
+ goto err;
+ } else {
+ int nid = ctx->pkey != NULL ? ctx->pkey->type : ctx->pmeth->pkey_id;
+
+ /*
+ * TODO(3.0): Check for legacy handling. Remove this once all all
+ * algorithms are moved to providers.
+ */
+ if (ctx->pkey != NULL) {
+ switch (ctx->pkey->type) {
+ case NID_dsa:
+ break;
+ default:
+ goto legacy;
+ }
+ signature = EVP_SIGNATURE_fetch(NULL, OBJ_nid2sn(nid), NULL);
+ } else {
+ goto legacy;
+ }
+
+ if (signature == NULL) {
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+ }
+
+ ctx->op.sig.signature = signature;
+ if (ctx->pkey != NULL) {
+ provkey = evp_keymgmt_export_to_provider(ctx->pkey, signature->keymgmt);
+ if (provkey == NULL) {
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+ }
+ ctx->op.sig.sigprovctx = signature->newctx(ossl_provider_ctx(signature->prov));
+ if (ctx->op.sig.sigprovctx == NULL) {
+ /* The provider key can stay in the cache */
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+
+ switch (operation) {
+ case EVP_PKEY_OP_SIGN:
+ if (signature->sign_init == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ret = -2;
+ goto err;
+ }
+ ret = signature->sign_init(ctx->op.sig.sigprovctx, provkey);
+ break;
+ case EVP_PKEY_OP_VERIFY:
+ if (signature->verify_init == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ret = -2;
+ goto err;
+ }
+ ret = signature->verify_init(ctx->op.sig.sigprovctx, provkey);
+ break;
+ case EVP_PKEY_OP_VERIFYRECOVER:
+ if (signature->verify_recover_init == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ret = -2;
+ goto err;
+ }
+ ret = signature->verify_recover_init(ctx->op.sig.sigprovctx, provkey);
+ break;
+ default:
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+
+ if (ret <= 0) {
+ signature->freectx(ctx->op.sig.sigprovctx);
+ ctx->op.sig.sigprovctx = NULL;
+ goto err;
+ }
+ return 1;
+
+ legacy:
+ if (ctx->pmeth == NULL
+ || (operation == EVP_PKEY_OP_SIGN && ctx->pmeth->sign == NULL)
+ || (operation == EVP_PKEY_OP_VERIFY && ctx->pmeth->verify == NULL)
+ || (operation == EVP_PKEY_OP_VERIFYRECOVER
+ && ctx->pmeth->verify_recover == NULL)) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+
+ switch (operation) {
+ case EVP_PKEY_OP_SIGN:
+ if (ctx->pmeth->sign_init == NULL)
+ return 1;
+ ret = ctx->pmeth->sign_init(ctx);
+ break;
+ case EVP_PKEY_OP_VERIFY:
+ if (ctx->pmeth->verify_init == NULL)
+ return 1;
+ ret = ctx->pmeth->verify_init(ctx);
+ break;
+ case EVP_PKEY_OP_VERIFYRECOVER:
+ if (ctx->pmeth->verify_recover_init == NULL)
+ return 1;
+ ret = ctx->pmeth->verify_recover_init(ctx);
+ break;
+ default:
+ EVPerr(0, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
if (ret <= 0)
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
+ goto err;
+ return ret;
+
+ err:
+ ctx->operation = EVP_PKEY_OP_UNDEFINED;
return ret;
}
+int EVP_PKEY_sign_init_ex(EVP_PKEY_CTX *ctx, EVP_SIGNATURE *signature)
+{
+ return evp_pkey_signature_init(ctx, signature, EVP_PKEY_OP_SIGN);
+}
+
+int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
+{
+ return evp_pkey_signature_init(ctx, NULL, EVP_PKEY_OP_SIGN);
+}
+
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);
+ int ret;
+
+ if (ctx == NULL) {
+ EVPerr(0, 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);
+ EVPerr(0, EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
+
+ if (ctx->op.sig.sigprovctx == NULL)
+ goto legacy;
+
+ ret = ctx->op.sig.signature->sign(ctx->op.sig.sigprovctx, sig, siglen,
+ SIZE_MAX, tbs, tbslen);
+
+ return ret;
+ legacy:
+
+ if (ctx->pmeth == NULL || ctx->pmeth->sign == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+
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_ex(EVP_PKEY_CTX *ctx, EVP_SIGNATURE *signature)
+{
+ return evp_pkey_signature_init(ctx, signature, EVP_PKEY_OP_VERIFY);
+}
+
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;
+ return evp_pkey_signature_init(ctx, NULL, EVP_PKEY_OP_VERIFY);
}
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);
+ int ret;
+
+ if (ctx == NULL) {
+ EVPerr(0, 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);
+ EVPerr(0, EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
+
+ if (ctx->op.sig.sigprovctx == NULL)
+ goto legacy;
+
+ ret = ctx->op.sig.signature->verify(ctx->op.sig.sigprovctx, sig, siglen,
+ tbs, tbslen);
+
+ return ret;
+ legacy:
+ if (ctx->pmeth == NULL || ctx->pmeth->verify == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+
return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
}
+int EVP_PKEY_verify_recover_init_ex(EVP_PKEY_CTX *ctx, EVP_SIGNATURE *signature)
+{
+ return evp_pkey_signature_init(ctx, signature, EVP_PKEY_OP_VERIFYRECOVER);
+}
+
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;
+ return evp_pkey_signature_init(ctx, NULL, EVP_PKEY_OP_VERIFYRECOVER);
}
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);
+ int ret;
+
+ if (ctx == NULL) {
+ EVPerr(0, 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);
+ EVPerr(0, EVP_R_OPERATON_NOT_INITIALIZED);
return -1;
}
+
+ if (ctx->op.sig.sigprovctx == NULL)
+ goto legacy;
+
+ ret = ctx->op.sig.signature->verify_recover(ctx->op.sig.sigprovctx, rout,
+ routlen,
+ (rout == NULL ? 0 : *routlen),
+ sig, siglen);
+ return ret;
+ legacy:
+ if (ctx->pmeth == NULL || ctx->pmeth->verify_recover == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
}
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->decrypt)
- || !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
- && ctx->operation != EVP_PKEY_OP_DECRYPT) {
- 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;
- }
-
- /*
- * 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)) {
- EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
- return -1;
- }
-
- EVP_PKEY_free(ctx->peerkey);
- ctx->peerkey = peer;
-
- ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
-
- if (ret <= 0) {
- ctx->peerkey = NULL;
- return ret;
- }
-
- EVP_PKEY_up_ref(peer);
- 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);
-}
projects / openssl.git / blobdiff