/*
- * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2006-2021 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
#include <openssl/x509.h>
#include <openssl/ec.h>
#include <openssl/bn.h>
-#include <openssl/cms.h>
#include <openssl/asn1t.h>
#include "crypto/asn1.h"
#include "crypto/evp.h"
#include "openssl/param_build.h"
#include "ec_local.h"
-#ifndef OPENSSL_NO_CMS
-static int ecdh_cms_decrypt(CMS_RecipientInfo *ri);
-static int ecdh_cms_encrypt(CMS_RecipientInfo *ri);
-#endif
-
static int eckey_param2type(int *pptype, void **ppval, const EC_KEY *ec_key)
{
const EC_GROUP *group;
int nid;
if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL) {
- ECerr(EC_F_ECKEY_PARAM2TYPE, EC_R_MISSING_PARAMETERS);
+ ERR_raise(ERR_LIB_EC, EC_R_MISSING_PARAMETERS);
return 0;
}
if (EC_GROUP_get_asn1_flag(group)
if (asn1obj == NULL || OBJ_length(asn1obj) == 0) {
ASN1_OBJECT_free(asn1obj);
- ECerr(EC_F_ECKEY_PARAM2TYPE, EC_R_MISSING_OID);
+ ERR_raise(ERR_LIB_EC, EC_R_MISSING_OID);
return 0;
}
*ppval = asn1obj;
pstr->length = i2d_ECParameters(ec_key, &pstr->data);
if (pstr->length <= 0) {
ASN1_STRING_free(pstr);
- ECerr(EC_F_ECKEY_PARAM2TYPE, ERR_R_EC_LIB);
+ ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
return 0;
}
*ppval = pstr;
int penclen;
if (!eckey_param2type(&ptype, &pval, ec_key)) {
- ECerr(EC_F_ECKEY_PUB_ENCODE, ERR_R_EC_LIB);
+ ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
return 0;
}
penclen = i2o_ECPublicKey(ec_key, NULL);
return 0;
}
-static EC_KEY *eckey_type2param(int ptype, const void *pval,
- OPENSSL_CTX *libctx, const char *propq)
-{
- EC_KEY *eckey = NULL;
- EC_GROUP *group = NULL;
-
- if ((eckey = EC_KEY_new_with_libctx(libctx, propq)) == NULL) {
- ECerr(EC_F_ECKEY_TYPE2PARAM, ERR_R_MALLOC_FAILURE);
- goto ecerr;
- }
-
- if (ptype == V_ASN1_SEQUENCE) {
- const ASN1_STRING *pstr = pval;
- const unsigned char *pm = pstr->data;
- int pmlen = pstr->length;
-
-
- if (d2i_ECParameters(&eckey, &pm, pmlen) == NULL) {
- ECerr(EC_F_ECKEY_TYPE2PARAM, EC_R_DECODE_ERROR);
- goto ecerr;
- }
- } else if (ptype == V_ASN1_OBJECT) {
- const ASN1_OBJECT *poid = pval;
-
- /*
- * type == V_ASN1_OBJECT => the parameters are given by an asn1 OID
- */
-
- group = EC_GROUP_new_by_curve_name_with_libctx(libctx, propq,
- OBJ_obj2nid(poid));
- if (group == NULL)
- goto ecerr;
- EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
- if (EC_KEY_set_group(eckey, group) == 0)
- goto ecerr;
- EC_GROUP_free(group);
- } else {
- ECerr(EC_F_ECKEY_TYPE2PARAM, EC_R_DECODE_ERROR);
- goto ecerr;
- }
-
- return eckey;
-
- ecerr:
- EC_KEY_free(eckey);
- EC_GROUP_free(group);
- return NULL;
-}
-
static int eckey_pub_decode(EVP_PKEY *pkey, const X509_PUBKEY *pubkey)
{
const unsigned char *p = NULL;
- const void *pval;
- int ptype, pklen;
+ int pklen;
EC_KEY *eckey = NULL;
X509_ALGOR *palg;
- OPENSSL_CTX *libctx = NULL;
+ OSSL_LIB_CTX *libctx = NULL;
const char *propq = NULL;
- if (!X509_PUBKEY_get0_libctx(&libctx, &propq, pubkey)
+ if (!ossl_x509_PUBKEY_get0_libctx(&libctx, &propq, pubkey)
|| !X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
return 0;
- X509_ALGOR_get0(NULL, &ptype, &pval, palg);
+ eckey = ossl_ec_key_param_from_x509_algor(palg, libctx, propq);
- eckey = eckey_type2param(ptype, pval, libctx, propq);
-
- if (!eckey) {
- ECerr(EC_F_ECKEY_PUB_DECODE, ERR_R_EC_LIB);
+ if (!eckey)
return 0;
- }
/* We have parameters now set public key */
if (!o2i_ECPublicKey(&eckey, &p, pklen)) {
- ECerr(EC_F_ECKEY_PUB_DECODE, EC_R_DECODE_ERROR);
+ ERR_raise(ERR_LIB_EC, EC_R_DECODE_ERROR);
goto ecerr;
}
return -2;
}
-static int eckey_priv_decode_with_libctx(EVP_PKEY *pkey,
- const PKCS8_PRIV_KEY_INFO *p8,
- OPENSSL_CTX *libctx,
- const char *propq)
+static int eckey_priv_decode_ex(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8,
+ OSSL_LIB_CTX *libctx, const char *propq)
{
- const unsigned char *p = NULL;
- const void *pval;
- int ptype, pklen;
- EC_KEY *eckey = NULL;
- const X509_ALGOR *palg;
-
- if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
- return 0;
- X509_ALGOR_get0(NULL, &ptype, &pval, palg);
-
- eckey = eckey_type2param(ptype, pval, libctx, propq);
-
- if (eckey == NULL)
- goto ecliberr;
+ int ret = 0;
+ EC_KEY *eckey = ossl_ec_key_from_pkcs8(p8, libctx, propq);
- /* We have parameters now set private key */
- if (!d2i_ECPrivateKey(&eckey, &p, pklen)) {
- ECerr(0, EC_R_DECODE_ERROR);
- goto ecerr;
+ if (eckey != NULL) {
+ ret = 1;
+ EVP_PKEY_assign_EC_KEY(pkey, eckey);
}
- EVP_PKEY_assign_EC_KEY(pkey, eckey);
- return 1;
-
- ecliberr:
- ECerr(0, ERR_R_EC_LIB);
- ecerr:
- EC_KEY_free(eckey);
- return 0;
+ return ret;
}
static int eckey_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
unsigned int old_flags;
if (!eckey_param2type(&ptype, &pval, &ec_key)) {
- ECerr(EC_F_ECKEY_PRIV_ENCODE, EC_R_DECODE_ERROR);
+ ERR_raise(ERR_LIB_EC, EC_R_DECODE_ERROR);
return 0;
}
eplen = i2d_ECPrivateKey(&ec_key, NULL);
if (!eplen) {
- ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_EC_LIB);
+ ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
return 0;
}
ep = OPENSSL_malloc(eplen);
if (ep == NULL) {
- ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_EC, ERR_R_MALLOC_FAILURE);
return 0;
}
p = ep;
if (!i2d_ECPrivateKey(&ec_key, &p)) {
OPENSSL_free(ep);
- ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_EC_LIB);
+ ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
return 0;
}
const EC_GROUP *group;
if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) {
- ECerr(EC_F_DO_EC_KEY_PRINT, ERR_R_PASSED_NULL_PARAMETER);
+ ERR_raise(ERR_LIB_EC, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
ret = 1;
err:
if (!ret)
- ECerr(EC_F_DO_EC_KEY_PRINT, ERR_R_EC_LIB);
+ ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
OPENSSL_clear_free(priv, privlen);
OPENSSL_free(pub);
return ret;
{
EC_KEY *ec;
- if ((ec = d2i_ECPrivateKey(NULL, pder, derlen)) == NULL) {
- ECerr(EC_F_OLD_EC_PRIV_DECODE, EC_R_DECODE_ERROR);
+ if ((ec = d2i_ECPrivateKey(NULL, pder, derlen)) == NULL)
return 0;
- }
EVP_PKEY_assign_EC_KEY(pkey, ec);
return 1;
}
static int ec_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
{
switch (op) {
- case ASN1_PKEY_CTRL_PKCS7_SIGN:
- if (arg1 == 0) {
- int snid, hnid;
- X509_ALGOR *alg1, *alg2;
-
- PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
- if (alg1 == NULL || alg1->algorithm == NULL)
- return -1;
- hnid = OBJ_obj2nid(alg1->algorithm);
- if (hnid == NID_undef)
- return -1;
- if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
- return -1;
- X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
- }
- return 1;
-#ifndef OPENSSL_NO_CMS
- case ASN1_PKEY_CTRL_CMS_SIGN:
- if (arg1 == 0) {
- int snid, hnid;
- X509_ALGOR *alg1, *alg2;
- CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
- if (alg1 == NULL || alg1->algorithm == NULL)
- return -1;
- hnid = OBJ_obj2nid(alg1->algorithm);
- if (hnid == NID_undef)
- return -1;
- if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
- return -1;
- X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
- }
- return 1;
-
- case ASN1_PKEY_CTRL_CMS_ENVELOPE:
- if (arg1 == 1)
- return ecdh_cms_decrypt(arg2);
- else if (arg1 == 0)
- return ecdh_cms_encrypt(arg2);
- return -2;
-
- case ASN1_PKEY_CTRL_CMS_RI_TYPE:
- *(int *)arg2 = CMS_RECIPINFO_AGREE;
- return 1;
-#endif
-
case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
if (EVP_PKEY_id(pkey) == EVP_PKEY_SM2) {
/* For SM2, the only valid digest-alg is SM3 */
return 1;
case ASN1_PKEY_CTRL_SET1_TLS_ENCPT:
- return EC_KEY_oct2key(EVP_PKEY_get0_EC_KEY(pkey), arg2, arg1, NULL);
+ /* We should only be here if we have a legacy key */
+ if (!ossl_assert(evp_pkey_is_legacy(pkey)))
+ return 0;
+ return EC_KEY_oct2key(evp_pkey_get0_EC_KEY_int(pkey), arg2, arg1, NULL);
case ASN1_PKEY_CTRL_GET1_TLS_ENCPT:
return EC_KEY_key2buf(EVP_PKEY_get0_EC_KEY(pkey),
default:
return -2;
-
}
-
}
static int ec_pkey_check(const EVP_PKEY *pkey)
/* stay consistent to what EVP_PKEY_check demands */
if (eckey->priv_key == NULL) {
- ECerr(EC_F_EC_PKEY_CHECK, EC_R_MISSING_PRIVATE_KEY);
+ ERR_raise(ERR_LIB_EC, EC_R_MISSING_PRIVATE_KEY);
return 0;
}
/* stay consistent to what EVP_PKEY_check demands */
if (eckey->group == NULL) {
- ECerr(EC_F_EC_PKEY_PARAM_CHECK, EC_R_MISSING_PARAMETERS);
+ ERR_raise(ERR_LIB_EC, EC_R_MISSING_PARAMETERS);
return 0;
}
static
int ec_pkey_export_to(const EVP_PKEY *from, void *to_keydata,
- EVP_KEYMGMT *to_keymgmt, OPENSSL_CTX *libctx,
+ EVP_KEYMGMT *to_keymgmt, OSSL_LIB_CTX *libctx,
const char *propq)
{
const EC_KEY *eckey = NULL;
BN_CTX_start(bnctx);
/* export the domain parameters */
- if (!ec_group_todata(ecg, tmpl, NULL, libctx, propq, bnctx, &gen_buf))
+ if (!ossl_ec_group_todata(ecg, tmpl, NULL, libctx, propq, bnctx, &gen_buf))
goto err;
selection |= OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS;
{
EVP_PKEY_CTX *pctx = vpctx;
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(pctx);
- EC_KEY *ec = EC_KEY_new_with_libctx(pctx->libctx, pctx->propquery);
+ EC_KEY *ec = EC_KEY_new_ex(pctx->libctx, pctx->propquery);
if (ec == NULL) {
ERR_raise(ERR_LIB_DH, ERR_R_MALLOC_FAILURE);
return 0;
}
- if (!ec_group_fromdata(ec, params)
- || !ec_key_otherparams_fromdata(ec, params)
- || !ec_key_fromdata(ec, params, 1)
+ if (!ossl_ec_group_fromdata(ec, params)
+ || !ossl_ec_key_otherparams_fromdata(ec, params)
+ || !ossl_ec_key_fromdata(ec, params, 1)
|| !EVP_PKEY_assign_EC_KEY(pkey, ec)) {
EC_KEY_free(ec);
return 0;
return 1;
}
-const EVP_PKEY_ASN1_METHOD eckey_asn1_meth = {
+static int ec_pkey_copy(EVP_PKEY *to, EVP_PKEY *from)
+{
+ EC_KEY *eckey = from->pkey.ec;
+ EC_KEY *dupkey = NULL;
+ int ret;
+
+ if (eckey != NULL) {
+ dupkey = EC_KEY_dup(eckey);
+ if (dupkey == NULL)
+ return 0;
+ } else {
+ /* necessary to properly copy empty SM2 keys */
+ return EVP_PKEY_set_type(to, from->type);
+ }
+
+ ret = EVP_PKEY_assign_EC_KEY(to, dupkey);
+ if (!ret)
+ EC_KEY_free(dupkey);
+ return ret;
+}
+
+const EVP_PKEY_ASN1_METHOD ossl_eckey_asn1_meth = {
EVP_PKEY_EC,
EVP_PKEY_EC,
0,
ec_pkey_dirty_cnt,
ec_pkey_export_to,
ec_pkey_import_from,
- eckey_priv_decode_with_libctx
+ ec_pkey_copy,
+ eckey_priv_decode_ex
};
#if !defined(OPENSSL_NO_SM2)
-const EVP_PKEY_ASN1_METHOD sm2_asn1_meth = {
+const EVP_PKEY_ASN1_METHOD ossl_sm2_asn1_meth = {
EVP_PKEY_SM2,
EVP_PKEY_EC,
ASN1_PKEY_ALIAS
{
return do_EC_KEY_print(bp, x, 4, EC_KEY_PRINT_PARAM);
}
-
-#ifndef OPENSSL_NO_CMS
-
-static int ecdh_cms_set_peerkey(EVP_PKEY_CTX *pctx,
- X509_ALGOR *alg, ASN1_BIT_STRING *pubkey)
-{
- const ASN1_OBJECT *aoid;
- int atype;
- const void *aval;
- int rv = 0;
- EVP_PKEY *pkpeer = NULL;
- EC_KEY *ecpeer = NULL;
- const unsigned char *p;
- int plen;
-
- X509_ALGOR_get0(&aoid, &atype, &aval, alg);
- if (OBJ_obj2nid(aoid) != NID_X9_62_id_ecPublicKey)
- goto err;
- /* If absent parameters get group from main key */
- if (atype == V_ASN1_UNDEF || atype == V_ASN1_NULL) {
- const EC_GROUP *grp;
- EVP_PKEY *pk;
- pk = EVP_PKEY_CTX_get0_pkey(pctx);
- if (pk == NULL)
- goto err;
- grp = EC_KEY_get0_group(pk->pkey.ec);
- ecpeer = EC_KEY_new();
- if (ecpeer == NULL)
- goto err;
- if (!EC_KEY_set_group(ecpeer, grp))
- goto err;
- } else {
- ecpeer = eckey_type2param(atype, aval, pctx->libctx, pctx->propquery);
- if (!ecpeer)
- goto err;
- }
- /* We have parameters now set public key */
- plen = ASN1_STRING_length(pubkey);
- p = ASN1_STRING_get0_data(pubkey);
- if (p == NULL || plen == 0)
- goto err;
- if (!o2i_ECPublicKey(&ecpeer, &p, plen))
- goto err;
- pkpeer = EVP_PKEY_new();
- if (pkpeer == NULL)
- goto err;
- EVP_PKEY_set1_EC_KEY(pkpeer, ecpeer);
- if (EVP_PKEY_derive_set_peer(pctx, pkpeer) > 0)
- rv = 1;
- err:
- EC_KEY_free(ecpeer);
- EVP_PKEY_free(pkpeer);
- return rv;
-}
-
-/* Set KDF parameters based on KDF NID */
-static int ecdh_cms_set_kdf_param(EVP_PKEY_CTX *pctx, int eckdf_nid)
-{
- int kdf_nid, kdfmd_nid, cofactor;
- const EVP_MD *kdf_md;
- if (eckdf_nid == NID_undef)
- return 0;
-
- /* Lookup KDF type, cofactor mode and digest */
- if (!OBJ_find_sigid_algs(eckdf_nid, &kdfmd_nid, &kdf_nid))
- return 0;
-
- if (kdf_nid == NID_dh_std_kdf)
- cofactor = 0;
- else if (kdf_nid == NID_dh_cofactor_kdf)
- cofactor = 1;
- else
- return 0;
-
- if (EVP_PKEY_CTX_set_ecdh_cofactor_mode(pctx, cofactor) <= 0)
- return 0;
-
- if (EVP_PKEY_CTX_set_ecdh_kdf_type(pctx, EVP_PKEY_ECDH_KDF_X9_63) <= 0)
- return 0;
-
- kdf_md = EVP_get_digestbynid(kdfmd_nid);
- if (!kdf_md)
- return 0;
-
- if (EVP_PKEY_CTX_set_ecdh_kdf_md(pctx, kdf_md) <= 0)
- return 0;
- return 1;
-}
-
-static int ecdh_cms_set_shared_info(EVP_PKEY_CTX *pctx, CMS_RecipientInfo *ri)
-{
- int rv = 0;
-
- X509_ALGOR *alg, *kekalg = NULL;
- ASN1_OCTET_STRING *ukm;
- const unsigned char *p;
- unsigned char *der = NULL;
- int plen, keylen;
- EVP_CIPHER *kekcipher = NULL;
- EVP_CIPHER_CTX *kekctx;
- const char *name;
-
- if (!CMS_RecipientInfo_kari_get0_alg(ri, &alg, &ukm))
- return 0;
-
- if (!ecdh_cms_set_kdf_param(pctx, OBJ_obj2nid(alg->algorithm))) {
- ECerr(EC_F_ECDH_CMS_SET_SHARED_INFO, EC_R_KDF_PARAMETER_ERROR);
- return 0;
- }
-
- if (alg->parameter->type != V_ASN1_SEQUENCE)
- return 0;
-
- p = alg->parameter->value.sequence->data;
- plen = alg->parameter->value.sequence->length;
- kekalg = d2i_X509_ALGOR(NULL, &p, plen);
- if (kekalg == NULL)
- goto err;
- kekctx = CMS_RecipientInfo_kari_get0_ctx(ri);
- if (kekctx == NULL)
- goto err;
- name = OBJ_nid2sn(OBJ_obj2nid(kekalg->algorithm));
- kekcipher = EVP_CIPHER_fetch(pctx->libctx, name, pctx->propquery);
- if (kekcipher == NULL || EVP_CIPHER_mode(kekcipher) != EVP_CIPH_WRAP_MODE)
- goto err;
- if (!EVP_EncryptInit_ex(kekctx, kekcipher, NULL, NULL, NULL))
- goto err;
- if (EVP_CIPHER_asn1_to_param(kekctx, kekalg->parameter) <= 0)
- goto err;
-
- keylen = EVP_CIPHER_CTX_key_length(kekctx);
- if (EVP_PKEY_CTX_set_ecdh_kdf_outlen(pctx, keylen) <= 0)
- goto err;
-
- plen = CMS_SharedInfo_encode(&der, kekalg, ukm, keylen);
-
- if (plen <= 0)
- goto err;
-
- if (EVP_PKEY_CTX_set0_ecdh_kdf_ukm(pctx, der, plen) <= 0)
- goto err;
- der = NULL;
-
- rv = 1;
- err:
- EVP_CIPHER_free(kekcipher);
- X509_ALGOR_free(kekalg);
- OPENSSL_free(der);
- return rv;
-}
-
-static int ecdh_cms_decrypt(CMS_RecipientInfo *ri)
-{
- EVP_PKEY_CTX *pctx;
-
- pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
- if (pctx == NULL)
- return 0;
- /* See if we need to set peer key */
- if (!EVP_PKEY_CTX_get0_peerkey(pctx)) {
- X509_ALGOR *alg;
- ASN1_BIT_STRING *pubkey;
-
- if (!CMS_RecipientInfo_kari_get0_orig_id(ri, &alg, &pubkey,
- NULL, NULL, NULL))
- return 0;
- if (!alg || !pubkey)
- return 0;
- if (!ecdh_cms_set_peerkey(pctx, alg, pubkey)) {
- ECerr(EC_F_ECDH_CMS_DECRYPT, EC_R_PEER_KEY_ERROR);
- return 0;
- }
- }
- /* Set ECDH derivation parameters and initialise unwrap context */
- if (!ecdh_cms_set_shared_info(pctx, ri)) {
- ECerr(EC_F_ECDH_CMS_DECRYPT, EC_R_SHARED_INFO_ERROR);
- return 0;
- }
- return 1;
-}
-
-static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
-{
- EVP_PKEY_CTX *pctx;
- EVP_PKEY *pkey;
- EVP_CIPHER_CTX *ctx;
- int keylen;
- X509_ALGOR *talg, *wrap_alg = NULL;
- const ASN1_OBJECT *aoid;
- ASN1_BIT_STRING *pubkey;
- ASN1_STRING *wrap_str;
- ASN1_OCTET_STRING *ukm;
- unsigned char *penc = NULL;
- int penclen;
- int rv = 0;
- int ecdh_nid, kdf_type, kdf_nid, wrap_nid;
- const EVP_MD *kdf_md;
-
- pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
- if (pctx == NULL)
- return 0;
- /* Get ephemeral key */
- pkey = EVP_PKEY_CTX_get0_pkey(pctx);
- if (!CMS_RecipientInfo_kari_get0_orig_id(ri, &talg, &pubkey,
- NULL, NULL, NULL))
- goto err;
- X509_ALGOR_get0(&aoid, NULL, NULL, talg);
- /* Is everything uninitialised? */
- if (aoid == OBJ_nid2obj(NID_undef)) {
-
- EC_KEY *eckey = pkey->pkey.ec;
- /* Set the key */
- unsigned char *p;
-
- penclen = i2o_ECPublicKey(eckey, NULL);
- if (penclen <= 0)
- goto err;
- penc = OPENSSL_malloc(penclen);
- if (penc == NULL)
- goto err;
- p = penc;
- penclen = i2o_ECPublicKey(eckey, &p);
- if (penclen <= 0)
- goto err;
- ASN1_STRING_set0(pubkey, penc, penclen);
- pubkey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
- pubkey->flags |= ASN1_STRING_FLAG_BITS_LEFT;
-
- penc = NULL;
- X509_ALGOR_set0(talg, OBJ_nid2obj(NID_X9_62_id_ecPublicKey),
- V_ASN1_UNDEF, NULL);
- }
-
- /* See if custom parameters set */
- kdf_type = EVP_PKEY_CTX_get_ecdh_kdf_type(pctx);
- if (kdf_type <= 0)
- goto err;
- if (!EVP_PKEY_CTX_get_ecdh_kdf_md(pctx, &kdf_md))
- goto err;
- ecdh_nid = EVP_PKEY_CTX_get_ecdh_cofactor_mode(pctx);
- if (ecdh_nid < 0)
- goto err;
- else if (ecdh_nid == 0)
- ecdh_nid = NID_dh_std_kdf;
- else if (ecdh_nid == 1)
- ecdh_nid = NID_dh_cofactor_kdf;
-
- if (kdf_type == EVP_PKEY_ECDH_KDF_NONE) {
- kdf_type = EVP_PKEY_ECDH_KDF_X9_63;
- if (EVP_PKEY_CTX_set_ecdh_kdf_type(pctx, kdf_type) <= 0)
- goto err;
- } else
- /* Unknown KDF */
- goto err;
- if (kdf_md == NULL) {
- /* Fixme later for better MD */
- kdf_md = EVP_sha1();
- if (EVP_PKEY_CTX_set_ecdh_kdf_md(pctx, kdf_md) <= 0)
- goto err;
- }
-
- if (!CMS_RecipientInfo_kari_get0_alg(ri, &talg, &ukm))
- goto err;
-
- /* Lookup NID for KDF+cofactor+digest */
-
- if (!OBJ_find_sigid_by_algs(&kdf_nid, EVP_MD_type(kdf_md), ecdh_nid))
- goto err;
- /* Get wrap NID */
- ctx = CMS_RecipientInfo_kari_get0_ctx(ri);
- wrap_nid = EVP_CIPHER_CTX_type(ctx);
- keylen = EVP_CIPHER_CTX_key_length(ctx);
-
- /* Package wrap algorithm in an AlgorithmIdentifier */
-
- wrap_alg = X509_ALGOR_new();
- if (wrap_alg == NULL)
- goto err;
- wrap_alg->algorithm = OBJ_nid2obj(wrap_nid);
- wrap_alg->parameter = ASN1_TYPE_new();
- if (wrap_alg->parameter == NULL)
- goto err;
- if (EVP_CIPHER_param_to_asn1(ctx, wrap_alg->parameter) <= 0)
- goto err;
- if (ASN1_TYPE_get(wrap_alg->parameter) == NID_undef) {
- ASN1_TYPE_free(wrap_alg->parameter);
- wrap_alg->parameter = NULL;
- }
-
- if (EVP_PKEY_CTX_set_ecdh_kdf_outlen(pctx, keylen) <= 0)
- goto err;
-
- penclen = CMS_SharedInfo_encode(&penc, wrap_alg, ukm, keylen);
-
- if (!penclen)
- goto err;
-
- if (EVP_PKEY_CTX_set0_ecdh_kdf_ukm(pctx, penc, penclen) <= 0)
- goto err;
- penc = NULL;
-
- /*
- * Now need to wrap encoding of wrap AlgorithmIdentifier into parameter
- * of another AlgorithmIdentifier.
- */
- penclen = i2d_X509_ALGOR(wrap_alg, &penc);
- if (!penc || !penclen)
- goto err;
- wrap_str = ASN1_STRING_new();
- if (wrap_str == NULL)
- goto err;
- ASN1_STRING_set0(wrap_str, penc, penclen);
- penc = NULL;
- X509_ALGOR_set0(talg, OBJ_nid2obj(kdf_nid), V_ASN1_SEQUENCE, wrap_str);
-
- rv = 1;
-
- err:
- OPENSSL_free(penc);
- X509_ALGOR_free(wrap_alg);
- return rv;
-}
-
-#endif
projects / thirdparty / openssl.git / blobdiff