mirror of
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e077455e9e
Since OPENSSL_malloc() and friends report ERR_R_MALLOC_FAILURE, and at least handle the file name and line number they are called from, there's no need to report ERR_R_MALLOC_FAILURE where they are called directly, or when SSLfatal() and RLAYERfatal() is used, the reason `ERR_R_MALLOC_FAILURE` is changed to `ERR_R_CRYPTO_LIB`. There were a number of places where `ERR_R_MALLOC_FAILURE` was reported even though it was a function from a different sub-system that was called. Those places are changed to report ERR_R_{lib}_LIB, where {lib} is the name of that sub-system. Some of them are tricky to get right, as we have a lot of functions that belong in the ASN1 sub-system, and all the `sk_` calls or from the CRYPTO sub-system. Some extra adaptation was necessary where there were custom OPENSSL_malloc() wrappers, and some bugs are fixed alongside these changes. Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Hugo Landau <hlandau@openssl.org> (Merged from https://github.com/openssl/openssl/pull/19301)
649 lines
15 KiB
C
649 lines
15 KiB
C
/*
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* Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* DH low level APIs are deprecated for public use, but still ok for
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* internal use.
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*/
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#include "internal/deprecated.h"
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#include <stdio.h>
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#include <openssl/x509.h>
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#include <openssl/asn1.h>
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#include <openssl/bn.h>
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#include <openssl/core_names.h>
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#include <openssl/param_build.h>
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#include "internal/ffc.h"
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#include "internal/cryptlib.h"
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#include "crypto/asn1.h"
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#include "crypto/dh.h"
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#include "crypto/evp.h"
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#include "dh_local.h"
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/*
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* i2d/d2i like DH parameter functions which use the appropriate routine for
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* PKCS#3 DH or X9.42 DH.
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*/
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static DH *d2i_dhp(const EVP_PKEY *pkey, const unsigned char **pp,
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long length)
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{
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DH *dh = NULL;
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int is_dhx = (pkey->ameth == &ossl_dhx_asn1_meth);
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if (is_dhx)
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dh = d2i_DHxparams(NULL, pp, length);
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else
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dh = d2i_DHparams(NULL, pp, length);
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return dh;
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}
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static int i2d_dhp(const EVP_PKEY *pkey, const DH *a, unsigned char **pp)
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{
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if (pkey->ameth == &ossl_dhx_asn1_meth)
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return i2d_DHxparams(a, pp);
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return i2d_DHparams(a, pp);
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}
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static void int_dh_free(EVP_PKEY *pkey)
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{
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DH_free(pkey->pkey.dh);
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}
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static int dh_pub_decode(EVP_PKEY *pkey, const X509_PUBKEY *pubkey)
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{
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const unsigned char *p, *pm;
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int pklen, pmlen;
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int ptype;
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const void *pval;
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const ASN1_STRING *pstr;
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X509_ALGOR *palg;
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ASN1_INTEGER *public_key = NULL;
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DH *dh = NULL;
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if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
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return 0;
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X509_ALGOR_get0(NULL, &ptype, &pval, palg);
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if (ptype != V_ASN1_SEQUENCE) {
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ERR_raise(ERR_LIB_DH, DH_R_PARAMETER_ENCODING_ERROR);
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goto err;
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}
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pstr = pval;
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pm = pstr->data;
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pmlen = pstr->length;
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if ((dh = d2i_dhp(pkey, &pm, pmlen)) == NULL) {
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ERR_raise(ERR_LIB_DH, DH_R_DECODE_ERROR);
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goto err;
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}
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if ((public_key = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL) {
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ERR_raise(ERR_LIB_DH, DH_R_DECODE_ERROR);
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goto err;
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}
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/* We have parameters now set public key */
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if ((dh->pub_key = ASN1_INTEGER_to_BN(public_key, NULL)) == NULL) {
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ERR_raise(ERR_LIB_DH, DH_R_BN_DECODE_ERROR);
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goto err;
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}
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ASN1_INTEGER_free(public_key);
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EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, dh);
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return 1;
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err:
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ASN1_INTEGER_free(public_key);
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DH_free(dh);
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return 0;
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}
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static int dh_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
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{
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DH *dh;
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int ptype;
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unsigned char *penc = NULL;
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int penclen;
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ASN1_STRING *str;
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ASN1_INTEGER *pub_key = NULL;
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dh = pkey->pkey.dh;
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str = ASN1_STRING_new();
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if (str == NULL) {
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ERR_raise(ERR_LIB_DH, ERR_R_ASN1_LIB);
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goto err;
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}
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str->length = i2d_dhp(pkey, dh, &str->data);
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if (str->length <= 0) {
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ERR_raise(ERR_LIB_DH, ERR_R_ASN1_LIB);
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goto err;
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}
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ptype = V_ASN1_SEQUENCE;
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pub_key = BN_to_ASN1_INTEGER(dh->pub_key, NULL);
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if (pub_key == NULL)
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goto err;
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penclen = i2d_ASN1_INTEGER(pub_key, &penc);
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ASN1_INTEGER_free(pub_key);
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if (penclen <= 0) {
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ERR_raise(ERR_LIB_DH, ERR_R_ASN1_LIB);
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goto err;
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}
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if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(pkey->ameth->pkey_id),
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ptype, str, penc, penclen))
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return 1;
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err:
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OPENSSL_free(penc);
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ASN1_STRING_free(str);
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return 0;
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}
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/*
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* PKCS#8 DH is defined in PKCS#11 of all places. It is similar to DH in that
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* the AlgorithmIdentifier contains the parameters, the private key is
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* explicitly included and the pubkey must be recalculated.
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*/
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static int dh_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
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{
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int ret = 0;
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DH *dh = ossl_dh_key_from_pkcs8(p8, NULL, NULL);
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if (dh != NULL) {
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ret = 1;
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EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, dh);
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}
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return ret;
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}
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static int dh_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
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{
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ASN1_STRING *params = NULL;
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ASN1_INTEGER *prkey = NULL;
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unsigned char *dp = NULL;
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int dplen;
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params = ASN1_STRING_new();
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if (params == NULL) {
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ERR_raise(ERR_LIB_DH, ERR_R_ASN1_LIB);
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goto err;
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}
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params->length = i2d_dhp(pkey, pkey->pkey.dh, ¶ms->data);
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if (params->length <= 0) {
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ERR_raise(ERR_LIB_DH, ERR_R_ASN1_LIB);
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goto err;
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}
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params->type = V_ASN1_SEQUENCE;
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/* Get private key into integer */
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prkey = BN_to_ASN1_INTEGER(pkey->pkey.dh->priv_key, NULL);
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if (prkey == NULL) {
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ERR_raise(ERR_LIB_DH, DH_R_BN_ERROR);
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goto err;
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}
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dplen = i2d_ASN1_INTEGER(prkey, &dp);
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ASN1_STRING_clear_free(prkey);
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if (dplen <= 0) {
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ERR_raise(ERR_LIB_DH, DH_R_BN_ERROR);
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goto err;
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}
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if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(pkey->ameth->pkey_id), 0,
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V_ASN1_SEQUENCE, params, dp, dplen)) {
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OPENSSL_clear_free(dp, dplen);
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goto err;
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}
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return 1;
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err:
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ASN1_STRING_free(params);
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return 0;
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}
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static int dh_param_decode(EVP_PKEY *pkey,
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const unsigned char **pder, int derlen)
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{
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DH *dh;
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if ((dh = d2i_dhp(pkey, pder, derlen)) == NULL)
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return 0;
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dh->dirty_cnt++;
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EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, dh);
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return 1;
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}
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static int dh_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
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{
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return i2d_dhp(pkey, pkey->pkey.dh, pder);
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}
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static int do_dh_print(BIO *bp, const DH *x, int indent, int ptype)
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{
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int reason = ERR_R_BUF_LIB;
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const char *ktype = NULL;
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BIGNUM *priv_key, *pub_key;
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if (ptype == 2)
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priv_key = x->priv_key;
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else
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priv_key = NULL;
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if (ptype > 0)
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pub_key = x->pub_key;
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else
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pub_key = NULL;
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if (x->params.p == NULL || (ptype == 2 && priv_key == NULL)
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|| (ptype > 0 && pub_key == NULL)) {
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reason = ERR_R_PASSED_NULL_PARAMETER;
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goto err;
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}
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if (ptype == 2)
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ktype = "DH Private-Key";
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else if (ptype == 1)
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ktype = "DH Public-Key";
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else
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ktype = "DH Parameters";
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if (!BIO_indent(bp, indent, 128)
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|| BIO_printf(bp, "%s: (%d bit)\n", ktype, DH_bits(x)) <= 0)
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goto err;
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indent += 4;
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if (!ASN1_bn_print(bp, "private-key:", priv_key, NULL, indent))
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goto err;
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if (!ASN1_bn_print(bp, "public-key:", pub_key, NULL, indent))
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goto err;
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if (!ossl_ffc_params_print(bp, &x->params, indent))
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goto err;
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if (x->length != 0) {
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if (!BIO_indent(bp, indent, 128)
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|| BIO_printf(bp, "recommended-private-length: %d bits\n",
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(int)x->length) <= 0)
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goto err;
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}
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return 1;
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err:
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ERR_raise(ERR_LIB_DH, reason);
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return 0;
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}
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static int int_dh_size(const EVP_PKEY *pkey)
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{
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return DH_size(pkey->pkey.dh);
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}
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static int dh_bits(const EVP_PKEY *pkey)
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{
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return DH_bits(pkey->pkey.dh);
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}
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static int dh_security_bits(const EVP_PKEY *pkey)
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{
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return DH_security_bits(pkey->pkey.dh);
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}
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static int dh_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
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{
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return ossl_ffc_params_cmp(&a->pkey.dh->params, &b->pkey.dh->params,
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a->ameth != &ossl_dhx_asn1_meth);
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}
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static int int_dh_param_copy(DH *to, const DH *from, int is_x942)
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{
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if (is_x942 == -1)
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is_x942 = (from->params.q != NULL);
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if (!ossl_ffc_params_copy(&to->params, &from->params))
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return 0;
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if (!is_x942)
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to->length = from->length;
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to->dirty_cnt++;
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return 1;
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}
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DH *DHparams_dup(const DH *dh)
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{
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DH *ret;
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ret = DH_new();
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if (ret == NULL)
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return NULL;
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if (!int_dh_param_copy(ret, dh, -1)) {
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DH_free(ret);
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return NULL;
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}
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return ret;
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}
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static int dh_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
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{
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if (to->pkey.dh == NULL) {
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to->pkey.dh = DH_new();
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if (to->pkey.dh == NULL)
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return 0;
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}
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return int_dh_param_copy(to->pkey.dh, from->pkey.dh,
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from->ameth == &ossl_dhx_asn1_meth);
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}
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static int dh_missing_parameters(const EVP_PKEY *a)
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{
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return a->pkey.dh == NULL
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|| a->pkey.dh->params.p == NULL
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|| a->pkey.dh->params.g == NULL;
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}
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static int dh_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
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{
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if (dh_cmp_parameters(a, b) == 0)
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return 0;
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if (BN_cmp(b->pkey.dh->pub_key, a->pkey.dh->pub_key) != 0)
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return 0;
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else
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return 1;
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}
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static int dh_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_dh_print(bp, pkey->pkey.dh, indent, 0);
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}
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static int dh_public_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_dh_print(bp, pkey->pkey.dh, indent, 1);
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}
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static int dh_private_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_dh_print(bp, pkey->pkey.dh, indent, 2);
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}
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int DHparams_print(BIO *bp, const DH *x)
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{
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return do_dh_print(bp, x, 4, 0);
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}
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static int dh_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
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{
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DH *dh;
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switch (op) {
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case ASN1_PKEY_CTRL_SET1_TLS_ENCPT:
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/* We should only be here if we have a legacy key */
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if (!ossl_assert(evp_pkey_is_legacy(pkey)))
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return 0;
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dh = (DH *) evp_pkey_get0_DH_int(pkey);
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if (dh == NULL)
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return 0;
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return ossl_dh_buf2key(dh, arg2, arg1);
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case ASN1_PKEY_CTRL_GET1_TLS_ENCPT:
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dh = (DH *) EVP_PKEY_get0_DH(pkey);
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if (dh == NULL)
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return 0;
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return ossl_dh_key2buf(dh, arg2, 0, 1);
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default:
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return -2;
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}
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}
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static int dhx_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
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{
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switch (op) {
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default:
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return -2;
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}
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}
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static int dh_pkey_public_check(const EVP_PKEY *pkey)
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{
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DH *dh = pkey->pkey.dh;
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if (dh->pub_key == NULL) {
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ERR_raise(ERR_LIB_DH, DH_R_MISSING_PUBKEY);
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return 0;
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}
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return DH_check_pub_key_ex(dh, dh->pub_key);
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}
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static int dh_pkey_param_check(const EVP_PKEY *pkey)
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{
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DH *dh = pkey->pkey.dh;
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return DH_check_ex(dh);
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}
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static size_t dh_pkey_dirty_cnt(const EVP_PKEY *pkey)
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{
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return pkey->pkey.dh->dirty_cnt;
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}
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static int dh_pkey_export_to(const EVP_PKEY *from, void *to_keydata,
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OSSL_FUNC_keymgmt_import_fn *importer,
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OSSL_LIB_CTX *libctx, const char *propq)
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{
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DH *dh = from->pkey.dh;
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OSSL_PARAM_BLD *tmpl;
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const BIGNUM *p = DH_get0_p(dh), *g = DH_get0_g(dh), *q = DH_get0_q(dh);
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long l = DH_get_length(dh);
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const BIGNUM *pub_key = DH_get0_pub_key(dh);
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const BIGNUM *priv_key = DH_get0_priv_key(dh);
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OSSL_PARAM *params = NULL;
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int selection = 0;
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int rv = 0;
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if (p == NULL || g == NULL)
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return 0;
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tmpl = OSSL_PARAM_BLD_new();
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if (tmpl == NULL)
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return 0;
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if (!OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_P, p)
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|| !OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_G, g))
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goto err;
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if (q != NULL) {
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if (!OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_Q, q))
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goto err;
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}
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selection |= OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS;
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if (l > 0) {
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if (!OSSL_PARAM_BLD_push_long(tmpl, OSSL_PKEY_PARAM_DH_PRIV_LEN, l))
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goto err;
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selection |= OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS;
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}
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if (pub_key != NULL) {
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if (!OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_PUB_KEY, pub_key))
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goto err;
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selection |= OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
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}
|
|
if (priv_key != NULL) {
|
|
if (!OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_PRIV_KEY,
|
|
priv_key))
|
|
goto err;
|
|
selection |= OSSL_KEYMGMT_SELECT_PRIVATE_KEY;
|
|
}
|
|
|
|
if ((params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL)
|
|
goto err;
|
|
|
|
/* We export, the provider imports */
|
|
rv = importer(to_keydata, selection, params);
|
|
|
|
OSSL_PARAM_free(params);
|
|
err:
|
|
OSSL_PARAM_BLD_free(tmpl);
|
|
return rv;
|
|
}
|
|
|
|
static int dh_pkey_import_from_type(const OSSL_PARAM params[], void *vpctx,
|
|
int type)
|
|
{
|
|
EVP_PKEY_CTX *pctx = vpctx;
|
|
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(pctx);
|
|
DH *dh = ossl_dh_new_ex(pctx->libctx);
|
|
|
|
if (dh == NULL) {
|
|
ERR_raise(ERR_LIB_DH, ERR_R_DH_LIB);
|
|
return 0;
|
|
}
|
|
DH_clear_flags(dh, DH_FLAG_TYPE_MASK);
|
|
DH_set_flags(dh, type == EVP_PKEY_DH ? DH_FLAG_TYPE_DH : DH_FLAG_TYPE_DHX);
|
|
|
|
if (!ossl_dh_params_fromdata(dh, params)
|
|
|| !ossl_dh_key_fromdata(dh, params, 1)
|
|
|| !EVP_PKEY_assign(pkey, type, dh)) {
|
|
DH_free(dh);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int dh_pkey_import_from(const OSSL_PARAM params[], void *vpctx)
|
|
{
|
|
return dh_pkey_import_from_type(params, vpctx, EVP_PKEY_DH);
|
|
}
|
|
|
|
static int dhx_pkey_import_from(const OSSL_PARAM params[], void *vpctx)
|
|
{
|
|
return dh_pkey_import_from_type(params, vpctx, EVP_PKEY_DHX);
|
|
}
|
|
|
|
static int dh_pkey_copy(EVP_PKEY *to, EVP_PKEY *from)
|
|
{
|
|
DH *dh = from->pkey.dh;
|
|
DH *dupkey = NULL;
|
|
int ret;
|
|
|
|
if (dh != NULL) {
|
|
dupkey = ossl_dh_dup(dh, OSSL_KEYMGMT_SELECT_ALL);
|
|
if (dupkey == NULL)
|
|
return 0;
|
|
}
|
|
|
|
ret = EVP_PKEY_assign(to, from->type, dupkey);
|
|
if (!ret)
|
|
DH_free(dupkey);
|
|
return ret;
|
|
}
|
|
|
|
const EVP_PKEY_ASN1_METHOD ossl_dh_asn1_meth = {
|
|
EVP_PKEY_DH,
|
|
EVP_PKEY_DH,
|
|
0,
|
|
|
|
"DH",
|
|
"OpenSSL PKCS#3 DH method",
|
|
|
|
dh_pub_decode,
|
|
dh_pub_encode,
|
|
dh_pub_cmp,
|
|
dh_public_print,
|
|
|
|
dh_priv_decode,
|
|
dh_priv_encode,
|
|
dh_private_print,
|
|
|
|
int_dh_size,
|
|
dh_bits,
|
|
dh_security_bits,
|
|
|
|
dh_param_decode,
|
|
dh_param_encode,
|
|
dh_missing_parameters,
|
|
dh_copy_parameters,
|
|
dh_cmp_parameters,
|
|
dh_param_print,
|
|
0,
|
|
|
|
int_dh_free,
|
|
dh_pkey_ctrl,
|
|
|
|
0, 0, 0, 0, 0,
|
|
|
|
0,
|
|
dh_pkey_public_check,
|
|
dh_pkey_param_check,
|
|
|
|
0, 0, 0, 0,
|
|
|
|
dh_pkey_dirty_cnt,
|
|
dh_pkey_export_to,
|
|
dh_pkey_import_from,
|
|
dh_pkey_copy
|
|
};
|
|
|
|
const EVP_PKEY_ASN1_METHOD ossl_dhx_asn1_meth = {
|
|
EVP_PKEY_DHX,
|
|
EVP_PKEY_DHX,
|
|
0,
|
|
|
|
"X9.42 DH",
|
|
"OpenSSL X9.42 DH method",
|
|
|
|
dh_pub_decode,
|
|
dh_pub_encode,
|
|
dh_pub_cmp,
|
|
dh_public_print,
|
|
|
|
dh_priv_decode,
|
|
dh_priv_encode,
|
|
dh_private_print,
|
|
|
|
int_dh_size,
|
|
dh_bits,
|
|
dh_security_bits,
|
|
|
|
dh_param_decode,
|
|
dh_param_encode,
|
|
dh_missing_parameters,
|
|
dh_copy_parameters,
|
|
dh_cmp_parameters,
|
|
dh_param_print,
|
|
0,
|
|
|
|
int_dh_free,
|
|
dhx_pkey_ctrl,
|
|
|
|
0, 0, 0, 0, 0,
|
|
|
|
0,
|
|
dh_pkey_public_check,
|
|
dh_pkey_param_check,
|
|
0, 0, 0, 0,
|
|
dh_pkey_dirty_cnt,
|
|
dh_pkey_export_to,
|
|
dhx_pkey_import_from,
|
|
dh_pkey_copy
|
|
};
|