| /* |
| * Copyright 2006-2026 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 != NULL) { |
| 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 */ |
