mirror of
https://github.com/openssl/openssl.git
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f5981c9629
Changed all provider implementations that have a set_ctx_params() to call this function instead of just testing (params == NULL).This detects the case wherean OSSL_PARAM array contains just a terminator entry. Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/25499)
680 lines
24 KiB
C
680 lines
24 KiB
C
/*
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* Copyright 2019-2024 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "internal/e_os.h"
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#include <openssl/core_names.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/params.h>
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#include <openssl/proverr.h>
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#include "internal/packet.h"
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#include "internal/der.h"
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#include "internal/nelem.h"
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#include "prov/provider_ctx.h"
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#include "prov/providercommon.h"
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#include "prov/implementations.h"
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#include "prov/provider_util.h"
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#include "prov/securitycheck.h"
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#include "prov/der_wrap.h"
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#define X942KDF_MAX_INLEN (1 << 30)
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static OSSL_FUNC_kdf_newctx_fn x942kdf_new;
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static OSSL_FUNC_kdf_dupctx_fn x942kdf_dup;
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static OSSL_FUNC_kdf_freectx_fn x942kdf_free;
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static OSSL_FUNC_kdf_reset_fn x942kdf_reset;
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static OSSL_FUNC_kdf_derive_fn x942kdf_derive;
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static OSSL_FUNC_kdf_settable_ctx_params_fn x942kdf_settable_ctx_params;
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static OSSL_FUNC_kdf_set_ctx_params_fn x942kdf_set_ctx_params;
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static OSSL_FUNC_kdf_gettable_ctx_params_fn x942kdf_gettable_ctx_params;
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static OSSL_FUNC_kdf_get_ctx_params_fn x942kdf_get_ctx_params;
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typedef struct {
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void *provctx;
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PROV_DIGEST digest;
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unsigned char *secret;
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size_t secret_len;
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unsigned char *acvpinfo;
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size_t acvpinfo_len;
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unsigned char *partyuinfo, *partyvinfo, *supp_pubinfo, *supp_privinfo;
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size_t partyuinfo_len, partyvinfo_len, supp_pubinfo_len, supp_privinfo_len;
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size_t dkm_len;
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const unsigned char *cek_oid;
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size_t cek_oid_len;
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int use_keybits;
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OSSL_FIPS_IND_DECLARE
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} KDF_X942;
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/*
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* A table of allowed wrapping algorithms, oids and the associated output
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* lengths.
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* NOTE: RC2wrap and camellia128_wrap have been removed as there are no
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* corresponding ciphers for these operations.
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*/
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static const struct {
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const char *name;
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const unsigned char *oid;
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size_t oid_len;
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size_t keklen; /* size in bytes */
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} kek_algs[] = {
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{ "AES-128-WRAP", ossl_der_oid_id_aes128_wrap, DER_OID_SZ_id_aes128_wrap,
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16 },
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{ "AES-192-WRAP", ossl_der_oid_id_aes192_wrap, DER_OID_SZ_id_aes192_wrap,
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24 },
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{ "AES-256-WRAP", ossl_der_oid_id_aes256_wrap, DER_OID_SZ_id_aes256_wrap,
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32 },
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#ifndef FIPS_MODULE
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{ "DES3-WRAP", ossl_der_oid_id_alg_CMS3DESwrap,
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DER_OID_SZ_id_alg_CMS3DESwrap, 24 },
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#endif
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};
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static int find_alg_id(OSSL_LIB_CTX *libctx, const char *algname,
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const char *propq, size_t *id)
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{
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int ret = 1;
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size_t i;
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EVP_CIPHER *cipher;
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cipher = EVP_CIPHER_fetch(libctx, algname, propq);
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if (cipher != NULL) {
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for (i = 0; i < OSSL_NELEM(kek_algs); i++) {
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if (EVP_CIPHER_is_a(cipher, kek_algs[i].name)) {
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*id = i;
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goto end;
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}
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}
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}
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ret = 0;
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ERR_raise(ERR_LIB_PROV, PROV_R_UNSUPPORTED_CEK_ALG);
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end:
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EVP_CIPHER_free(cipher);
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return ret;
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}
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static int DER_w_keyinfo(WPACKET *pkt,
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const unsigned char *der_oid, size_t der_oidlen,
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unsigned char **pcounter)
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{
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return ossl_DER_w_begin_sequence(pkt, -1)
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/* Store the initial value of 1 into the counter */
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&& ossl_DER_w_octet_string_uint32(pkt, -1, 1)
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/* Remember where we stored the counter in the buffer */
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&& (pcounter == NULL
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|| (*pcounter = WPACKET_get_curr(pkt)) != NULL)
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&& ossl_DER_w_precompiled(pkt, -1, der_oid, der_oidlen)
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&& ossl_DER_w_end_sequence(pkt, -1);
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}
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static int der_encode_sharedinfo(WPACKET *pkt, unsigned char *buf, size_t buflen,
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const unsigned char *der_oid, size_t der_oidlen,
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const unsigned char *acvp, size_t acvplen,
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const unsigned char *partyu, size_t partyulen,
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const unsigned char *partyv, size_t partyvlen,
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const unsigned char *supp_pub, size_t supp_publen,
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const unsigned char *supp_priv, size_t supp_privlen,
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uint32_t keylen_bits, unsigned char **pcounter)
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{
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return (buf != NULL ? WPACKET_init_der(pkt, buf, buflen) :
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WPACKET_init_null_der(pkt))
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&& ossl_DER_w_begin_sequence(pkt, -1)
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&& (supp_priv == NULL
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|| ossl_DER_w_octet_string(pkt, 3, supp_priv, supp_privlen))
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&& (supp_pub == NULL
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|| ossl_DER_w_octet_string(pkt, 2, supp_pub, supp_publen))
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&& (keylen_bits == 0
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|| ossl_DER_w_octet_string_uint32(pkt, 2, keylen_bits))
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&& (partyv == NULL || ossl_DER_w_octet_string(pkt, 1, partyv, partyvlen))
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&& (partyu == NULL || ossl_DER_w_octet_string(pkt, 0, partyu, partyulen))
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&& (acvp == NULL || ossl_DER_w_precompiled(pkt, -1, acvp, acvplen))
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&& DER_w_keyinfo(pkt, der_oid, der_oidlen, pcounter)
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&& ossl_DER_w_end_sequence(pkt, -1)
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&& WPACKET_finish(pkt);
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}
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/*
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* Encode the other info structure.
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*
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* The ANS X9.42-2003 standard uses OtherInfo:
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*
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* OtherInfo ::= SEQUENCE {
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* keyInfo KeySpecificInfo,
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* partyUInfo [0] OCTET STRING OPTIONAL,
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* partyVInfo [1] OCTET STRING OPTIONAL,
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* suppPubInfo [2] OCTET STRING OPTIONAL,
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* suppPrivInfo [3] OCTET STRING OPTIONAL
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* }
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*
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* KeySpecificInfo ::= SEQUENCE {
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* algorithm OBJECT IDENTIFIER,
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* counter OCTET STRING SIZE (4..4)
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* }
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*
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* RFC2631 Section 2.1.2 Contains the following definition for OtherInfo
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*
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* OtherInfo ::= SEQUENCE {
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* keyInfo KeySpecificInfo,
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* partyAInfo [0] OCTET STRING OPTIONAL,
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* suppPubInfo [2] OCTET STRING
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* }
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* Where suppPubInfo is the key length (in bits) (stored into 4 bytes)
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*
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* |keylen| is the length (in bytes) of the generated KEK. It is stored into
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* suppPubInfo (in bits). It is ignored if the value is 0.
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* |cek_oid| The oid of the key wrapping algorithm.
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* |cek_oidlen| The length (in bytes) of the key wrapping algorithm oid,
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* |acvp| is the optional blob of DER data representing one or more of the
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* OtherInfo fields related to |partyu|, |partyv|, |supp_pub| and |supp_priv|.
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* This field should normally be NULL. If |acvp| is non NULL then |partyu|,
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* |partyv|, |supp_pub| and |supp_priv| should all be NULL.
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* |acvp_len| is the |acvp| length (in bytes).
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* |partyu| is the optional public info contributed by the initiator.
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* It can be NULL. (It is also used as the ukm by CMS).
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* |partyu_len| is the |partyu| length (in bytes).
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* |partyv| is the optional public info contributed by the responder.
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* It can be NULL.
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* |partyv_len| is the |partyv| length (in bytes).
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* |supp_pub| is the optional additional, mutually-known public information.
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* It can be NULL. |keylen| should be 0 if this is not NULL.
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* |supp_pub_len| is the |supp_pub| length (in bytes).
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* |supp_priv| is the optional additional, mutually-known private information.
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* It can be NULL.
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* |supp_priv_len| is the |supp_priv| length (in bytes).
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* |der| is the returned encoded data. It must be freed by the caller.
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* |der_len| is the returned size of the encoded data.
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* |out_ctr| returns a pointer to the counter data which is embedded inside the
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* encoded data. This allows the counter bytes to be updated without
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* re-encoding.
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*
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* Returns: 1 if successfully encoded, or 0 otherwise.
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* Assumptions: |der|, |der_len| & |out_ctr| are not NULL.
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*/
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static int
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x942_encode_otherinfo(size_t keylen,
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const unsigned char *cek_oid, size_t cek_oid_len,
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const unsigned char *acvp, size_t acvp_len,
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const unsigned char *partyu, size_t partyu_len,
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const unsigned char *partyv, size_t partyv_len,
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const unsigned char *supp_pub, size_t supp_pub_len,
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const unsigned char *supp_priv, size_t supp_priv_len,
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unsigned char **der, size_t *der_len,
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unsigned char **out_ctr)
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{
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int ret = 0;
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unsigned char *pcounter = NULL, *der_buf = NULL;
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size_t der_buflen = 0;
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WPACKET pkt;
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uint32_t keylen_bits;
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/* keylenbits must fit into 4 bytes */
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if (keylen > 0xFFFFFF)
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return 0;
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keylen_bits = 8 * keylen;
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/* Calculate the size of the buffer */
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if (!der_encode_sharedinfo(&pkt, NULL, 0, cek_oid, cek_oid_len,
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acvp, acvp_len,
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partyu, partyu_len, partyv, partyv_len,
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supp_pub, supp_pub_len, supp_priv, supp_priv_len,
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keylen_bits, NULL)
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|| !WPACKET_get_total_written(&pkt, &der_buflen))
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goto err;
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WPACKET_cleanup(&pkt);
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/* Alloc the buffer */
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der_buf = OPENSSL_zalloc(der_buflen);
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if (der_buf == NULL)
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goto err;
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/* Encode into the buffer */
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if (!der_encode_sharedinfo(&pkt, der_buf, der_buflen, cek_oid, cek_oid_len,
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acvp, acvp_len,
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partyu, partyu_len, partyv, partyv_len,
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supp_pub, supp_pub_len, supp_priv, supp_priv_len,
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keylen_bits, &pcounter))
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goto err;
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/*
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* Since we allocated the exact size required, the buffer should point to the
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* start of the allocated buffer at this point.
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*/
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if (WPACKET_get_curr(&pkt) != der_buf)
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goto err;
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/*
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* The data for the DER encoded octet string of a 32 bit counter = 1
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* should be 04 04 00 00 00 01
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* So just check the header is correct and skip over it.
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* This counter will be incremented in the kdf update loop.
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*/
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if (pcounter == NULL
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|| pcounter[0] != 0x04
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|| pcounter[1] != 0x04)
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goto err;
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*out_ctr = (pcounter + 2);
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*der = der_buf;
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*der_len = der_buflen;
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ret = 1;
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err:
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WPACKET_cleanup(&pkt);
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return ret;
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}
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static int x942kdf_hash_kdm(const EVP_MD *kdf_md,
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const unsigned char *z, size_t z_len,
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const unsigned char *other, size_t other_len,
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unsigned char *ctr,
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unsigned char *derived_key, size_t derived_key_len)
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{
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int ret = 0, hlen;
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size_t counter, out_len, len = derived_key_len;
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unsigned char mac[EVP_MAX_MD_SIZE];
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unsigned char *out = derived_key;
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EVP_MD_CTX *ctx = NULL, *ctx_init = NULL;
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if (z_len > X942KDF_MAX_INLEN
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|| other_len > X942KDF_MAX_INLEN
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|| derived_key_len > X942KDF_MAX_INLEN
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|| derived_key_len == 0) {
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ERR_raise(ERR_LIB_PROV, PROV_R_BAD_LENGTH);
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return 0;
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}
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hlen = EVP_MD_get_size(kdf_md);
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if (hlen <= 0)
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return 0;
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out_len = (size_t)hlen;
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ctx = EVP_MD_CTX_create();
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ctx_init = EVP_MD_CTX_create();
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if (ctx == NULL || ctx_init == NULL)
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goto end;
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if (!EVP_DigestInit(ctx_init, kdf_md))
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goto end;
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for (counter = 1;; counter++) {
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/* updating the ctr modifies 4 bytes in the 'other' buffer */
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ctr[0] = (unsigned char)((counter >> 24) & 0xff);
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ctr[1] = (unsigned char)((counter >> 16) & 0xff);
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ctr[2] = (unsigned char)((counter >> 8) & 0xff);
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ctr[3] = (unsigned char)(counter & 0xff);
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if (!EVP_MD_CTX_copy_ex(ctx, ctx_init)
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|| !EVP_DigestUpdate(ctx, z, z_len)
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|| !EVP_DigestUpdate(ctx, other, other_len))
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goto end;
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if (len >= out_len) {
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if (!EVP_DigestFinal_ex(ctx, out, NULL))
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goto end;
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out += out_len;
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len -= out_len;
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if (len == 0)
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break;
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} else {
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if (!EVP_DigestFinal_ex(ctx, mac, NULL))
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goto end;
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memcpy(out, mac, len);
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break;
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}
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}
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ret = 1;
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end:
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EVP_MD_CTX_free(ctx);
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EVP_MD_CTX_free(ctx_init);
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OPENSSL_cleanse(mac, sizeof(mac));
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return ret;
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}
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static void *x942kdf_new(void *provctx)
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{
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KDF_X942 *ctx;
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if (!ossl_prov_is_running())
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return NULL;
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ctx = OPENSSL_zalloc(sizeof(*ctx));
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if (ctx == NULL)
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return NULL;
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ctx->provctx = provctx;
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OSSL_FIPS_IND_INIT(ctx)
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ctx->use_keybits = 1;
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return ctx;
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}
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static void x942kdf_reset(void *vctx)
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{
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KDF_X942 *ctx = (KDF_X942 *)vctx;
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void *provctx = ctx->provctx;
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ossl_prov_digest_reset(&ctx->digest);
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OPENSSL_clear_free(ctx->secret, ctx->secret_len);
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OPENSSL_clear_free(ctx->acvpinfo, ctx->acvpinfo_len);
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OPENSSL_clear_free(ctx->partyuinfo, ctx->partyuinfo_len);
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OPENSSL_clear_free(ctx->partyvinfo, ctx->partyvinfo_len);
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OPENSSL_clear_free(ctx->supp_pubinfo, ctx->supp_pubinfo_len);
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OPENSSL_clear_free(ctx->supp_privinfo, ctx->supp_privinfo_len);
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memset(ctx, 0, sizeof(*ctx));
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ctx->provctx = provctx;
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ctx->use_keybits = 1;
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}
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static void x942kdf_free(void *vctx)
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{
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KDF_X942 *ctx = (KDF_X942 *)vctx;
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if (ctx != NULL) {
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x942kdf_reset(ctx);
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OPENSSL_free(ctx);
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}
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}
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static void *x942kdf_dup(void *vctx)
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{
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const KDF_X942 *src = (const KDF_X942 *)vctx;
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KDF_X942 *dest;
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dest = x942kdf_new(src->provctx);
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if (dest != NULL) {
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if (!ossl_prov_memdup(src->secret, src->secret_len,
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&dest->secret , &dest->secret_len)
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|| !ossl_prov_memdup(src->acvpinfo, src->acvpinfo_len,
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&dest->acvpinfo , &dest->acvpinfo_len)
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|| !ossl_prov_memdup(src->partyuinfo, src->partyuinfo_len,
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&dest->partyuinfo , &dest->partyuinfo_len)
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|| !ossl_prov_memdup(src->partyvinfo, src->partyvinfo_len,
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&dest->partyvinfo , &dest->partyvinfo_len)
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|| !ossl_prov_memdup(src->supp_pubinfo, src->supp_pubinfo_len,
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&dest->supp_pubinfo,
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&dest->supp_pubinfo_len)
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|| !ossl_prov_memdup(src->supp_privinfo, src->supp_privinfo_len,
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&dest->supp_privinfo,
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&dest->supp_privinfo_len)
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|| !ossl_prov_digest_copy(&dest->digest, &src->digest))
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goto err;
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dest->cek_oid = src->cek_oid;
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dest->cek_oid_len = src->cek_oid_len;
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dest->dkm_len = src->dkm_len;
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dest->use_keybits = src->use_keybits;
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OSSL_FIPS_IND_COPY(dest, src)
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}
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return dest;
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err:
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x942kdf_free(dest);
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return NULL;
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}
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static int x942kdf_set_buffer(unsigned char **out, size_t *out_len,
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const OSSL_PARAM *p)
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{
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if (p->data_size == 0 || p->data == NULL)
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return 1;
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OPENSSL_free(*out);
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*out = NULL;
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return OSSL_PARAM_get_octet_string(p, (void **)out, 0, out_len);
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}
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static size_t x942kdf_size(KDF_X942 *ctx)
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{
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int len;
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const EVP_MD *md = ossl_prov_digest_md(&ctx->digest);
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if (md == NULL) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_MESSAGE_DIGEST);
|
|
return 0;
|
|
}
|
|
len = EVP_MD_get_size(md);
|
|
return (len <= 0) ? 0 : (size_t)len;
|
|
}
|
|
|
|
#ifdef FIPS_MODULE
|
|
static int fips_x942kdf_key_check_passed(KDF_X942 *ctx)
|
|
{
|
|
OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(ctx->provctx);
|
|
int key_approved = ossl_kdf_check_key_size(ctx->secret_len);
|
|
|
|
if (!key_approved) {
|
|
if (!OSSL_FIPS_IND_ON_UNAPPROVED(ctx, OSSL_FIPS_IND_SETTABLE0,
|
|
libctx, "X942KDF", "Key size",
|
|
ossl_fips_config_x942kdf_key_check)) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
static int x942kdf_derive(void *vctx, unsigned char *key, size_t keylen,
|
|
const OSSL_PARAM params[])
|
|
{
|
|
KDF_X942 *ctx = (KDF_X942 *)vctx;
|
|
const EVP_MD *md;
|
|
int ret = 0;
|
|
unsigned char *ctr;
|
|
unsigned char *der = NULL;
|
|
size_t der_len = 0;
|
|
|
|
if (!ossl_prov_is_running() || !x942kdf_set_ctx_params(ctx, params))
|
|
return 0;
|
|
|
|
/*
|
|
* These 2 options encode to the same field so only one of them should be
|
|
* active at once.
|
|
*/
|
|
if (ctx->use_keybits && ctx->supp_pubinfo != NULL) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_PUBINFO);
|
|
return 0;
|
|
}
|
|
/*
|
|
* If the blob of acvp data is used then the individual info fields that it
|
|
* replaces should not also be defined.
|
|
*/
|
|
if (ctx->acvpinfo != NULL
|
|
&& (ctx->partyuinfo != NULL
|
|
|| ctx->partyvinfo != NULL
|
|
|| ctx->supp_pubinfo != NULL
|
|
|| ctx->supp_privinfo != NULL)) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
|
|
return 0;
|
|
}
|
|
if (ctx->secret == NULL) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_SECRET);
|
|
return 0;
|
|
}
|
|
md = ossl_prov_digest_md(&ctx->digest);
|
|
if (md == NULL) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_MESSAGE_DIGEST);
|
|
return 0;
|
|
}
|
|
if (ctx->cek_oid == NULL || ctx->cek_oid_len == 0) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_CEK_ALG);
|
|
return 0;
|
|
}
|
|
if (ctx->partyuinfo != NULL && ctx->partyuinfo_len >= X942KDF_MAX_INLEN) {
|
|
/*
|
|
* Note the ukm length MUST be 512 bits if it is used.
|
|
* For backwards compatibility the old check is being done.
|
|
*/
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_UKM_LENGTH);
|
|
return 0;
|
|
}
|
|
/* generate the otherinfo der */
|
|
if (!x942_encode_otherinfo(ctx->use_keybits ? ctx->dkm_len : 0,
|
|
ctx->cek_oid, ctx->cek_oid_len,
|
|
ctx->acvpinfo, ctx->acvpinfo_len,
|
|
ctx->partyuinfo, ctx->partyuinfo_len,
|
|
ctx->partyvinfo, ctx->partyvinfo_len,
|
|
ctx->supp_pubinfo, ctx->supp_pubinfo_len,
|
|
ctx->supp_privinfo, ctx->supp_privinfo_len,
|
|
&der, &der_len, &ctr)) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_BAD_ENCODING);
|
|
return 0;
|
|
}
|
|
ret = x942kdf_hash_kdm(md, ctx->secret, ctx->secret_len,
|
|
der, der_len, ctr, key, keylen);
|
|
OPENSSL_free(der);
|
|
return ret;
|
|
}
|
|
|
|
static int x942kdf_set_ctx_params(void *vctx, const OSSL_PARAM params[])
|
|
{
|
|
const OSSL_PARAM *p, *pq;
|
|
KDF_X942 *ctx = vctx;
|
|
OSSL_LIB_CTX *provctx = PROV_LIBCTX_OF(ctx->provctx);
|
|
const char *propq = NULL;
|
|
const EVP_MD *md;
|
|
size_t id;
|
|
|
|
if (ossl_param_is_empty(params))
|
|
return 1;
|
|
|
|
if (!OSSL_FIPS_IND_SET_CTX_PARAM(ctx, OSSL_FIPS_IND_SETTABLE0, params,
|
|
OSSL_KDF_PARAM_FIPS_KEY_CHECK))
|
|
return 0;
|
|
|
|
if (OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_DIGEST) != NULL) {
|
|
if (!ossl_prov_digest_load_from_params(&ctx->digest, params, provctx))
|
|
return 0;
|
|
md = ossl_prov_digest_md(&ctx->digest);
|
|
if (EVP_MD_xof(md)) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_XOF_DIGESTS_NOT_ALLOWED);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_SECRET);
|
|
if (p == NULL)
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_KEY);
|
|
if (p != NULL) {
|
|
if (!x942kdf_set_buffer(&ctx->secret, &ctx->secret_len, p))
|
|
return 0;
|
|
#ifdef FIPS_MODULE
|
|
if (!fips_x942kdf_key_check_passed(ctx))
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_ACVPINFO);
|
|
if (p != NULL
|
|
&& !x942kdf_set_buffer(&ctx->acvpinfo, &ctx->acvpinfo_len, p))
|
|
return 0;
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_PARTYUINFO);
|
|
if (p == NULL)
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_UKM);
|
|
if (p != NULL
|
|
&& !x942kdf_set_buffer(&ctx->partyuinfo, &ctx->partyuinfo_len, p))
|
|
return 0;
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_PARTYVINFO);
|
|
if (p != NULL
|
|
&& !x942kdf_set_buffer(&ctx->partyvinfo, &ctx->partyvinfo_len, p))
|
|
return 0;
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_USE_KEYBITS);
|
|
if (p != NULL && !OSSL_PARAM_get_int(p, &ctx->use_keybits))
|
|
return 0;
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_SUPP_PUBINFO);
|
|
if (p != NULL) {
|
|
if (!x942kdf_set_buffer(&ctx->supp_pubinfo, &ctx->supp_pubinfo_len, p))
|
|
return 0;
|
|
ctx->use_keybits = 0;
|
|
}
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_SUPP_PRIVINFO);
|
|
if (p != NULL
|
|
&& !x942kdf_set_buffer(&ctx->supp_privinfo, &ctx->supp_privinfo_len, p))
|
|
return 0;
|
|
|
|
p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_CEK_ALG);
|
|
if (p != NULL) {
|
|
if (p->data_type != OSSL_PARAM_UTF8_STRING)
|
|
return 0;
|
|
pq = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_PROPERTIES);
|
|
/*
|
|
* We already grab the properties during ossl_prov_digest_load_from_params()
|
|
* so there is no need to check the validity again..
|
|
*/
|
|
if (pq != NULL)
|
|
propq = p->data;
|
|
if (find_alg_id(provctx, p->data, propq, &id) == 0)
|
|
return 0;
|
|
ctx->cek_oid = kek_algs[id].oid;
|
|
ctx->cek_oid_len = kek_algs[id].oid_len;
|
|
ctx->dkm_len = kek_algs[id].keklen;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static const OSSL_PARAM *x942kdf_settable_ctx_params(ossl_unused void *ctx,
|
|
ossl_unused void *provctx)
|
|
{
|
|
static const OSSL_PARAM known_settable_ctx_params[] = {
|
|
OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_PROPERTIES, NULL, 0),
|
|
OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_DIGEST, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_SECRET, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_KEY, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_UKM, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_ACVPINFO, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_PARTYUINFO, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_PARTYVINFO, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_SUPP_PUBINFO, NULL, 0),
|
|
OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_SUPP_PRIVINFO, NULL, 0),
|
|
OSSL_PARAM_int(OSSL_KDF_PARAM_X942_USE_KEYBITS, NULL),
|
|
OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_CEK_ALG, NULL, 0),
|
|
OSSL_FIPS_IND_SETTABLE_CTX_PARAM(OSSL_KDF_PARAM_FIPS_KEY_CHECK)
|
|
OSSL_PARAM_END
|
|
};
|
|
return known_settable_ctx_params;
|
|
}
|
|
|
|
static int x942kdf_get_ctx_params(void *vctx, OSSL_PARAM params[])
|
|
{
|
|
KDF_X942 *ctx = (KDF_X942 *)vctx;
|
|
OSSL_PARAM *p;
|
|
|
|
p = OSSL_PARAM_locate(params, OSSL_KDF_PARAM_SIZE);
|
|
if (p != NULL && !OSSL_PARAM_set_size_t(p, x942kdf_size(ctx)))
|
|
return 0;
|
|
|
|
if (!OSSL_FIPS_IND_GET_CTX_PARAM(ctx, params))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static const OSSL_PARAM *x942kdf_gettable_ctx_params(ossl_unused void *ctx,
|
|
ossl_unused void *provctx)
|
|
{
|
|
static const OSSL_PARAM known_gettable_ctx_params[] = {
|
|
OSSL_PARAM_size_t(OSSL_KDF_PARAM_SIZE, NULL),
|
|
OSSL_FIPS_IND_GETTABLE_CTX_PARAM()
|
|
OSSL_PARAM_END
|
|
};
|
|
return known_gettable_ctx_params;
|
|
}
|
|
|
|
const OSSL_DISPATCH ossl_kdf_x942_kdf_functions[] = {
|
|
{ OSSL_FUNC_KDF_NEWCTX, (void(*)(void))x942kdf_new },
|
|
{ OSSL_FUNC_KDF_DUPCTX, (void(*)(void))x942kdf_dup },
|
|
{ OSSL_FUNC_KDF_FREECTX, (void(*)(void))x942kdf_free },
|
|
{ OSSL_FUNC_KDF_RESET, (void(*)(void))x942kdf_reset },
|
|
{ OSSL_FUNC_KDF_DERIVE, (void(*)(void))x942kdf_derive },
|
|
{ OSSL_FUNC_KDF_SETTABLE_CTX_PARAMS,
|
|
(void(*)(void))x942kdf_settable_ctx_params },
|
|
{ OSSL_FUNC_KDF_SET_CTX_PARAMS, (void(*)(void))x942kdf_set_ctx_params },
|
|
{ OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
|
|
(void(*)(void))x942kdf_gettable_ctx_params },
|
|
{ OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))x942kdf_get_ctx_params },
|
|
OSSL_DISPATCH_END
|
|
};
|