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-rw-r--r--lib/dns/openssldh_link.c1336
1 files changed, 1336 insertions, 0 deletions
diff --git a/lib/dns/openssldh_link.c b/lib/dns/openssldh_link.c
new file mode 100644
index 0000000..00950b7
--- /dev/null
+++ b/lib/dns/openssldh_link.c
@@ -0,0 +1,1336 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0 AND ISC
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*
+ * Copyright (C) Network Associates, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE
+ * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*! \file */
+
+#include <ctype.h>
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <openssl/bn.h>
+#include <openssl/opensslv.h>
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+#include <openssl/core_names.h>
+#endif
+#include <openssl/err.h>
+#include <openssl/objects.h>
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+#include <openssl/param_build.h>
+#endif
+#include <openssl/dh.h>
+
+#include <isc/mem.h>
+#include <isc/result.h>
+#include <isc/safe.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include "dst_internal.h"
+#include "dst_openssl.h"
+#include "dst_parse.h"
+#include "openssl_shim.h"
+
+#define PRIME2 "02"
+
+#define PRIME768 \
+ "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088" \
+ "A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25" \
+ "F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A63A3620FFFFFFFFFFFFFFF" \
+ "F"
+
+#define PRIME1024 \
+ "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" \
+ "8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF2" \
+ "5F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406" \
+ "B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF"
+
+#define PRIME1536 \
+ "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" \
+ "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" \
+ "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" \
+ "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" \
+ "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" \
+ "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" \
+ "83655D23DCA3AD961C62F356208552BB9ED529077096966D" \
+ "670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF"
+
+#define DST_RET(a) \
+ { \
+ ret = a; \
+ goto err; \
+ }
+
+static BIGNUM *bn2 = NULL, *bn768 = NULL, *bn1024 = NULL, *bn1536 = NULL;
+
+static isc_result_t
+openssldh_computesecret(const dst_key_t *pub, const dst_key_t *priv,
+ isc_buffer_t *secret) {
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dhpub, *dhpriv;
+ const BIGNUM *pub_key = NULL;
+ int secret_len = 0;
+#else
+ EVP_PKEY_CTX *ctx = NULL;
+ EVP_PKEY *dhpub, *dhpriv;
+ size_t secret_len = 0;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ isc_region_t r;
+ unsigned int len;
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ REQUIRE(pub->keydata.dh != NULL);
+ REQUIRE(priv->keydata.dh != NULL);
+
+ dhpub = pub->keydata.dh;
+ dhpriv = priv->keydata.dh;
+
+ len = DH_size(dhpriv);
+#else
+ REQUIRE(pub->keydata.pkey != NULL);
+ REQUIRE(priv->keydata.pkey != NULL);
+
+ dhpub = pub->keydata.pkey;
+ dhpriv = priv->keydata.pkey;
+
+ len = EVP_PKEY_get_size(dhpriv);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ isc_buffer_availableregion(secret, &r);
+ if (r.length < len) {
+ return (ISC_R_NOSPACE);
+ }
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH_get0_key(dhpub, &pub_key, NULL);
+ secret_len = DH_compute_key(r.base, pub_key, dhpriv);
+ if (secret_len <= 0) {
+ return (dst__openssl_toresult2("DH_compute_key",
+ DST_R_COMPUTESECRETFAILURE));
+ }
+#else
+ ctx = EVP_PKEY_CTX_new_from_pkey(NULL, dhpriv, NULL);
+ if (ctx == NULL) {
+ return (dst__openssl_toresult2("EVP_PKEY_CTX_new_from_pkey",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_derive_init(ctx) != 1) {
+ EVP_PKEY_CTX_free(ctx);
+ return (dst__openssl_toresult2("EVP_PKEY_derive_init",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_derive_set_peer(ctx, dhpub) != 1) {
+ EVP_PKEY_CTX_free(ctx);
+ return (dst__openssl_toresult2("EVP_PKEY_derive_set_peer",
+ DST_R_OPENSSLFAILURE));
+ }
+ secret_len = r.length;
+ if (EVP_PKEY_derive(ctx, r.base, &secret_len) != 1 || secret_len == 0) {
+ EVP_PKEY_CTX_free(ctx);
+ return (dst__openssl_toresult2("EVP_PKEY_derive",
+ DST_R_COMPUTESECRETFAILURE));
+ }
+ EVP_PKEY_CTX_free(ctx);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ isc_buffer_add(secret, (unsigned int)secret_len);
+
+ return (ISC_R_SUCCESS);
+}
+
+static bool
+openssldh_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ bool ret = true;
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh1, *dh2;
+ const BIGNUM *pub_key1 = NULL, *pub_key2 = NULL;
+ const BIGNUM *priv_key1 = NULL, *priv_key2 = NULL;
+ const BIGNUM *p1 = NULL, *g1 = NULL, *p2 = NULL, *g2 = NULL;
+#else
+ EVP_PKEY *pkey1, *pkey2;
+ BIGNUM *pub_key1 = NULL, *pub_key2 = NULL;
+ BIGNUM *priv_key1 = NULL, *priv_key2 = NULL;
+ BIGNUM *p1 = NULL, *g1 = NULL, *p2 = NULL, *g2 = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ dh1 = key1->keydata.dh;
+ dh2 = key2->keydata.dh;
+
+ if (dh1 == NULL && dh2 == NULL) {
+ return (true);
+ } else if (dh1 == NULL || dh2 == NULL) {
+ return (false);
+ }
+
+ DH_get0_key(dh1, &pub_key1, &priv_key1);
+ DH_get0_key(dh2, &pub_key2, &priv_key2);
+ DH_get0_pqg(dh1, &p1, NULL, &g1);
+ DH_get0_pqg(dh2, &p2, NULL, &g2);
+#else
+ pkey1 = key1->keydata.pkey;
+ pkey2 = key2->keydata.pkey;
+
+ if (pkey1 == NULL && pkey2 == NULL) {
+ return (true);
+ } else if (pkey1 == NULL || pkey2 == NULL) {
+ return (false);
+ }
+
+ EVP_PKEY_get_bn_param(pkey1, OSSL_PKEY_PARAM_FFC_P, &p1);
+ EVP_PKEY_get_bn_param(pkey2, OSSL_PKEY_PARAM_FFC_P, &p2);
+ EVP_PKEY_get_bn_param(pkey1, OSSL_PKEY_PARAM_FFC_G, &g1);
+ EVP_PKEY_get_bn_param(pkey2, OSSL_PKEY_PARAM_FFC_G, &g2);
+ EVP_PKEY_get_bn_param(pkey1, OSSL_PKEY_PARAM_PUB_KEY, &pub_key1);
+ EVP_PKEY_get_bn_param(pkey2, OSSL_PKEY_PARAM_PUB_KEY, &pub_key2);
+ EVP_PKEY_get_bn_param(pkey1, OSSL_PKEY_PARAM_PRIV_KEY, &priv_key1);
+ EVP_PKEY_get_bn_param(pkey2, OSSL_PKEY_PARAM_PRIV_KEY, &priv_key2);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000*/
+
+ if (BN_cmp(p1, p2) != 0 || BN_cmp(g1, g2) != 0 ||
+ BN_cmp(pub_key1, pub_key2) != 0)
+ {
+ DST_RET(false);
+ }
+
+ if (priv_key1 != NULL || priv_key2 != NULL) {
+ if (priv_key1 == NULL || priv_key2 == NULL ||
+ BN_cmp(priv_key1, priv_key2) != 0)
+ {
+ DST_RET(false);
+ }
+ }
+
+err:
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000
+ if (p1 != NULL) {
+ BN_free(p1);
+ }
+ if (p2 != NULL) {
+ BN_free(p2);
+ }
+ if (g1 != NULL) {
+ BN_free(g1);
+ }
+ if (g2 != NULL) {
+ BN_free(g2);
+ }
+ if (pub_key1 != NULL) {
+ BN_free(pub_key1);
+ }
+ if (pub_key2 != NULL) {
+ BN_free(pub_key2);
+ }
+ if (priv_key1 != NULL) {
+ BN_clear_free(priv_key1);
+ }
+ if (priv_key2 != NULL) {
+ BN_clear_free(priv_key2);
+ }
+#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000 \
+ */
+
+ return (ret);
+}
+
+static bool
+openssldh_paramcompare(const dst_key_t *key1, const dst_key_t *key2) {
+ bool ret = true;
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh1, *dh2;
+ const BIGNUM *p1 = NULL, *g1 = NULL, *p2 = NULL, *g2 = NULL;
+#else
+ EVP_PKEY *pkey1, *pkey2;
+ BIGNUM *p1 = NULL, *g1 = NULL, *p2 = NULL, *g2 = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ dh1 = key1->keydata.dh;
+ dh2 = key2->keydata.dh;
+
+ if (dh1 == NULL && dh2 == NULL) {
+ return (true);
+ } else if (dh1 == NULL || dh2 == NULL) {
+ return (false);
+ }
+
+ DH_get0_pqg(dh1, &p1, NULL, &g1);
+ DH_get0_pqg(dh2, &p2, NULL, &g2);
+#else
+ pkey1 = key1->keydata.pkey;
+ pkey2 = key2->keydata.pkey;
+
+ if (pkey1 == NULL && pkey2 == NULL) {
+ return (true);
+ } else if (pkey1 == NULL || pkey2 == NULL) {
+ return (false);
+ }
+
+ EVP_PKEY_get_bn_param(pkey1, OSSL_PKEY_PARAM_FFC_P, &p1);
+ EVP_PKEY_get_bn_param(pkey2, OSSL_PKEY_PARAM_FFC_P, &p2);
+ EVP_PKEY_get_bn_param(pkey1, OSSL_PKEY_PARAM_FFC_G, &g1);
+ EVP_PKEY_get_bn_param(pkey2, OSSL_PKEY_PARAM_FFC_G, &g2);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ if (BN_cmp(p1, p2) != 0 || BN_cmp(g1, g2) != 0) {
+ DST_RET(false);
+ }
+
+err:
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000
+ if (p1 != NULL) {
+ BN_free(p1);
+ }
+ if (p2 != NULL) {
+ BN_free(p2);
+ }
+ if (g1 != NULL) {
+ BN_free(g1);
+ }
+ if (g2 != NULL) {
+ BN_free(g2);
+ }
+#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000 \
+ */
+
+ return (ret);
+}
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+static int
+progress_cb(int p, int n, BN_GENCB *cb) {
+ union {
+ void *dptr;
+ void (*fptr)(int);
+ } u;
+
+ UNUSED(n);
+
+ u.dptr = BN_GENCB_get_arg(cb);
+ if (u.fptr != NULL) {
+ u.fptr(p);
+ }
+ return (1);
+}
+#else
+static int
+progress_cb(EVP_PKEY_CTX *ctx) {
+ union {
+ void *dptr;
+ void (*fptr)(int);
+ } u;
+
+ u.dptr = EVP_PKEY_CTX_get_app_data(ctx);
+ if (u.fptr != NULL) {
+ int p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
+ u.fptr(p);
+ }
+ return (1);
+}
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+static isc_result_t
+openssldh_generate(dst_key_t *key, int generator, void (*callback)(int)) {
+ isc_result_t ret;
+ union {
+ void *dptr;
+ void (*fptr)(int);
+ } u;
+ BIGNUM *p = NULL, *g = NULL;
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh = NULL;
+ BN_GENCB *cb = NULL;
+#if !HAVE_BN_GENCB_NEW
+ BN_GENCB _cb;
+#endif /* !HAVE_BN_GENCB_NEW */
+#else
+ OSSL_PARAM_BLD *bld = NULL;
+ OSSL_PARAM *params = NULL;
+ EVP_PKEY_CTX *param_ctx = NULL;
+ EVP_PKEY_CTX *ctx = NULL;
+ EVP_PKEY *param_pkey = NULL;
+ EVP_PKEY *pkey = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ dh = DH_new();
+ if (dh == NULL) {
+ DST_RET(dst__openssl_toresult(ISC_R_NOMEMORY));
+ }
+#else
+ bld = OSSL_PARAM_BLD_new();
+ if (bld == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ param_ctx = EVP_PKEY_CTX_new_from_name(NULL, "DH", NULL);
+ if (param_ctx == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ if (generator == 0) {
+ /*
+ * When `generator` is 0, we have three pre-computed `p` and `g`
+ * static parameters which we can use.
+ */
+ if (key->key_size == 768 || key->key_size == 1024 ||
+ key->key_size == 1536)
+ {
+ if (key->key_size == 768) {
+ p = BN_dup(bn768);
+ } else if (key->key_size == 1024) {
+ p = BN_dup(bn1024);
+ } else {
+ p = BN_dup(bn1536);
+ }
+ g = BN_dup(bn2);
+ if (p == NULL || g == NULL) {
+ DST_RET(dst__openssl_toresult(ISC_R_NOMEMORY));
+ }
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (DH_set0_pqg(dh, p, NULL, g) != 1) {
+ DST_RET(dst__openssl_toresult2(
+ "DH_set0_pqg", DST_R_OPENSSLFAILURE));
+ }
+#else
+ if (OSSL_PARAM_BLD_push_uint(bld,
+ OSSL_PKEY_PARAM_FFC_PBITS,
+ key->key_size) != 1)
+ {
+ DST_RET(dst__openssl_toresult2(
+ "OSSL_PARAM_BLD_push_uint",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_FFC_P,
+ p) != 1 ||
+ OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_FFC_G,
+ g) != 1)
+ {
+ DST_RET(dst__openssl_toresult2(
+ "OSSL_PARAM_BLD_push_BN",
+ DST_R_OPENSSLFAILURE));
+ }
+ params = OSSL_PARAM_BLD_to_param(bld);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ } else {
+ /*
+ * If the requested size is not present in our
+ * pre-computed set, we will use `generator` 2 to
+ * generate new parameters.
+ */
+ generator = 2;
+ }
+ }
+
+ if (generator != 0) {
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ cb = BN_GENCB_new();
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
+ if (cb == NULL) {
+ DST_RET(dst__openssl_toresult(ISC_R_NOMEMORY));
+ }
+#endif /* if OPENSSL_VERSION_NUMBER >= 0x10100000L && \
+ * !defined(LIBRESSL_VERSION_NUMBER) */
+ if (callback == NULL) {
+ BN_GENCB_set_old(cb, NULL, NULL);
+ } else {
+ u.fptr = callback;
+ BN_GENCB_set(cb, progress_cb, u.dptr);
+ }
+
+ if (!DH_generate_parameters_ex(dh, key->key_size, generator,
+ cb))
+ {
+ DST_RET(dst__openssl_toresult2("DH_generate_parameters_"
+ "ex",
+ DST_R_OPENSSLFAILURE));
+ }
+#else
+ if (OSSL_PARAM_BLD_push_int(bld, OSSL_PKEY_PARAM_DH_GENERATOR,
+ generator) != 1)
+ {
+ DST_RET(dst__openssl_toresult2("OSSL_PARAM_BLD_push_"
+ "int",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (OSSL_PARAM_BLD_push_utf8_string(
+ bld, OSSL_PKEY_PARAM_FFC_TYPE, "generator", 0) != 1)
+ {
+ DST_RET(dst__openssl_toresult2("OSSL_PARAM_BLD_push_"
+ "utf8_string",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (OSSL_PARAM_BLD_push_uint(bld, OSSL_PKEY_PARAM_FFC_PBITS,
+ key->key_size) != 1)
+ {
+ DST_RET(dst__openssl_toresult2("OSSL_PARAM_BLD_push_"
+ "uint",
+ DST_R_OPENSSLFAILURE));
+ }
+ params = OSSL_PARAM_BLD_to_param(bld);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ }
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (DH_generate_key(dh) == 0) {
+ DST_RET(dst__openssl_toresult2("DH_generate_key",
+ DST_R_OPENSSLFAILURE));
+ }
+ DH_clear_flags(dh, DH_FLAG_CACHE_MONT_P);
+ key->keydata.dh = dh;
+ dh = NULL;
+#else
+ if (params == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+
+ if (generator == 0) {
+ if (EVP_PKEY_fromdata_init(param_ctx) != 1) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_fromdata_init",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_fromdata(param_ctx, &param_pkey,
+ OSSL_KEYMGMT_SELECT_ALL, params) != 1 ||
+ param_pkey == NULL)
+ {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_fromdata",
+ DST_R_OPENSSLFAILURE));
+ }
+ } else {
+ if (EVP_PKEY_paramgen_init(param_ctx) != 1) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_paramgen_init",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_CTX_set_params(param_ctx, params) != 1) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_CTX_set_"
+ "params",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_paramgen(param_ctx, &param_pkey) != 1 ||
+ param_pkey == NULL)
+ {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_paramgen",
+ DST_R_OPENSSLFAILURE));
+ }
+ }
+
+ /*
+ * Now `param_pkey` holds the DH parameters (either pre-coumputed or
+ * newly generated) so we will generate a new public/private key-pair
+ * using those parameters and put it into `pkey`.
+ */
+ ctx = EVP_PKEY_CTX_new_from_pkey(NULL, param_pkey, NULL);
+ if (ctx == NULL) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_CTX_new_from_pkey",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (callback != NULL) {
+ u.fptr = callback;
+ EVP_PKEY_CTX_set_app_data(ctx, u.dptr);
+ EVP_PKEY_CTX_set_cb(ctx, progress_cb);
+ }
+ if (EVP_PKEY_keygen_init(ctx) != 1) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_keygen_init",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_keygen(ctx, &pkey) != 1 || pkey == NULL) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_keygen",
+ DST_R_OPENSSLFAILURE));
+ }
+
+ key->keydata.pkey = pkey;
+ pkey = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ ret = ISC_R_SUCCESS;
+
+err:
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (dh != NULL) {
+ DH_free(dh);
+ }
+ if (cb != NULL) {
+ BN_GENCB_free(cb);
+ }
+#else
+ if (param_pkey != NULL) {
+ EVP_PKEY_free(param_pkey);
+ }
+ if (pkey != NULL) {
+ EVP_PKEY_free(pkey);
+ }
+ if (param_ctx != NULL) {
+ EVP_PKEY_CTX_free(param_ctx);
+ }
+ if (ctx != NULL) {
+ EVP_PKEY_CTX_free(ctx);
+ }
+ if (params != NULL) {
+ OSSL_PARAM_free(params);
+ }
+ if (bld != NULL) {
+ OSSL_PARAM_BLD_free(bld);
+ }
+ if (p != NULL) {
+ BN_free(p);
+ }
+ if (g != NULL) {
+ BN_free(g);
+ }
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ return (ret);
+}
+
+static bool
+openssldh_isprivate(const dst_key_t *key) {
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh = key->keydata.dh;
+ const BIGNUM *priv_key = NULL;
+
+ DH_get0_key(dh, NULL, &priv_key);
+
+ return (dh != NULL && priv_key != NULL);
+#else
+ bool ret;
+ EVP_PKEY *pkey;
+ BIGNUM *priv_key = NULL;
+
+ pkey = key->keydata.pkey;
+ if (pkey == NULL) {
+ return (false);
+ }
+
+ ret = (EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_PRIV_KEY,
+ &priv_key) == 1 &&
+ priv_key != NULL);
+ if (priv_key != NULL) {
+ BN_clear_free(priv_key);
+ }
+
+ return (ret);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+}
+
+static void
+openssldh_destroy(dst_key_t *key) {
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh = key->keydata.dh;
+
+ if (dh == NULL) {
+ return;
+ }
+
+ DH_free(dh);
+ key->keydata.dh = NULL;
+#else
+ EVP_PKEY *pkey = key->keydata.pkey;
+
+ if (pkey == NULL) {
+ return;
+ }
+
+ EVP_PKEY_free(pkey);
+ key->keydata.pkey = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+}
+
+static void
+uint16_toregion(uint16_t val, isc_region_t *region) {
+ *region->base = (val & 0xff00) >> 8;
+ isc_region_consume(region, 1);
+ *region->base = (val & 0x00ff);
+ isc_region_consume(region, 1);
+}
+
+static uint16_t
+uint16_fromregion(isc_region_t *region) {
+ uint16_t val;
+ unsigned char *cp = region->base;
+
+ val = ((unsigned int)(cp[0])) << 8;
+ val |= ((unsigned int)(cp[1]));
+
+ isc_region_consume(region, 2);
+
+ return (val);
+}
+
+static isc_result_t
+openssldh_todns(const dst_key_t *key, isc_buffer_t *data) {
+ isc_result_t ret = ISC_R_SUCCESS;
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh;
+ const BIGNUM *pub_key = NULL, *p = NULL, *g = NULL;
+#else
+ EVP_PKEY *pkey;
+ BIGNUM *pub_key = NULL, *p = NULL, *g = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ isc_region_t r;
+ uint16_t dnslen, plen, glen, publen;
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ REQUIRE(key->keydata.dh != NULL);
+
+ dh = key->keydata.dh;
+ DH_get0_pqg(dh, &p, NULL, &g);
+ DH_get0_key(dh, &pub_key, NULL);
+#else
+ REQUIRE(key->keydata.pkey != NULL);
+
+ pkey = key->keydata.pkey;
+ EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_FFC_P, &p);
+ EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_FFC_G, &g);
+ EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_PUB_KEY, &pub_key);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ isc_buffer_availableregion(data, &r);
+
+ if (BN_cmp(g, bn2) == 0 &&
+ (BN_cmp(p, bn768) == 0 || BN_cmp(p, bn1024) == 0 ||
+ BN_cmp(p, bn1536) == 0))
+ {
+ plen = 1;
+ glen = 0;
+ } else {
+ plen = BN_num_bytes(p);
+ glen = BN_num_bytes(g);
+ }
+
+ publen = BN_num_bytes(pub_key);
+ dnslen = plen + glen + publen + 6;
+ if (r.length < (unsigned int)dnslen) {
+ DST_RET(ISC_R_NOSPACE);
+ }
+
+ uint16_toregion(plen, &r);
+ if (plen == 1) {
+ if (BN_cmp(p, bn768) == 0) {
+ *r.base = 1;
+ } else if (BN_cmp(p, bn1024) == 0) {
+ *r.base = 2;
+ } else {
+ *r.base = 3;
+ }
+ } else {
+ BN_bn2bin(p, r.base);
+ }
+ isc_region_consume(&r, plen);
+
+ uint16_toregion(glen, &r);
+ if (glen > 0) {
+ BN_bn2bin(g, r.base);
+ }
+ isc_region_consume(&r, glen);
+
+ uint16_toregion(publen, &r);
+ BN_bn2bin(pub_key, r.base);
+ isc_region_consume(&r, publen);
+
+ isc_buffer_add(data, dnslen);
+
+err:
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000
+ if (p != NULL) {
+ BN_free(p);
+ }
+ if (g != NULL) {
+ BN_free(g);
+ }
+ if (pub_key != NULL) {
+ BN_free(pub_key);
+ }
+#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000 \
+ */
+
+ return (ret);
+}
+
+static isc_result_t
+openssldh_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ isc_result_t ret;
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh;
+#else
+ OSSL_PARAM_BLD *bld = NULL;
+ OSSL_PARAM *params = NULL;
+ EVP_PKEY_CTX *ctx = NULL;
+ EVP_PKEY *pkey = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ BIGNUM *pub_key = NULL, *p = NULL, *g = NULL;
+ int key_size;
+ isc_region_t r;
+ uint16_t plen, glen, publen;
+ int special = 0;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0) {
+ return (ISC_R_SUCCESS);
+ }
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ dh = DH_new();
+ if (dh == NULL) {
+ DST_RET(dst__openssl_toresult(ISC_R_NOMEMORY));
+ }
+ DH_clear_flags(dh, DH_FLAG_CACHE_MONT_P);
+#else
+ bld = OSSL_PARAM_BLD_new();
+ if (bld == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ ctx = EVP_PKEY_CTX_new_from_name(NULL, "DH", NULL);
+ if (ctx == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ /*
+ * Read the prime length. 1 & 2 are table entries, > 16 means a
+ * prime follows, otherwise an error.
+ */
+ if (r.length < 2) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ plen = uint16_fromregion(&r);
+ if (plen < 16 && plen != 1 && plen != 2) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ if (r.length < plen) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ if (plen == 1 || plen == 2) {
+ if (plen == 1) {
+ special = *r.base;
+ isc_region_consume(&r, 1);
+ } else {
+ special = uint16_fromregion(&r);
+ }
+ switch (special) {
+ case 1:
+ p = BN_dup(bn768);
+ break;
+ case 2:
+ p = BN_dup(bn1024);
+ break;
+ case 3:
+ p = BN_dup(bn1536);
+ break;
+ default:
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ } else {
+ p = BN_bin2bn(r.base, plen, NULL);
+ isc_region_consume(&r, plen);
+ }
+
+ /*
+ * Read the generator length. This should be 0 if the prime was
+ * special, but it might not be. If it's 0 and the prime is not
+ * special, we have a problem.
+ */
+ if (r.length < 2) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ glen = uint16_fromregion(&r);
+ if (r.length < glen) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ if (special != 0) {
+ if (glen == 0) {
+ g = BN_dup(bn2);
+ } else {
+ g = BN_bin2bn(r.base, glen, NULL);
+ if (g != NULL && BN_cmp(g, bn2) != 0) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ }
+ } else {
+ if (glen == 0) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ g = BN_bin2bn(r.base, glen, NULL);
+ }
+ isc_region_consume(&r, glen);
+
+ if (p == NULL || g == NULL) {
+ DST_RET(dst__openssl_toresult(ISC_R_NOMEMORY));
+ }
+
+ key_size = BN_num_bits(p);
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (DH_set0_pqg(dh, p, NULL, g) != 1) {
+ DST_RET(dst__openssl_toresult2("DH_set0_pqg",
+ DST_R_OPENSSLFAILURE));
+ }
+
+ /* These are now managed by OpenSSL */
+ p = NULL;
+ g = NULL;
+#else
+ if (OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_FFC_P, p) != 1 ||
+ OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_FFC_G, g) != 1)
+ {
+ DST_RET(dst__openssl_toresult2("OSSL_PARAM_BLD_push_BN",
+ DST_R_OPENSSLFAILURE));
+ }
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ if (r.length < 2) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ publen = uint16_fromregion(&r);
+ if (r.length < publen) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ pub_key = BN_bin2bn(r.base, publen, NULL);
+ if (pub_key == NULL) {
+ DST_RET(dst__openssl_toresult(ISC_R_NOMEMORY));
+ }
+
+ isc_region_consume(&r, publen);
+
+ isc_buffer_forward(data, plen + glen + publen + 6);
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+#if (LIBRESSL_VERSION_NUMBER >= 0x2070000fL) && \
+ (LIBRESSL_VERSION_NUMBER <= 0x2070200fL)
+ /*
+ * LibreSSL << 2.7.3 DH_get0_key requires priv_key to be set when
+ * DH structure is empty, hence we cannot use DH_get0_key().
+ */
+ dh->pub_key = pub_key;
+#else /* LIBRESSL_VERSION_NUMBER */
+ if (DH_set0_key(dh, pub_key, NULL) != 1) {
+ DST_RET(dst__openssl_toresult2("DH_set0_key",
+ DST_R_OPENSSLFAILURE));
+ }
+#endif /* LIBRESSL_VERSION_NUMBER */
+
+ /* This is now managed by OpenSSL */
+ pub_key = NULL;
+
+ key->keydata.dh = dh;
+ dh = NULL;
+#else
+ if (OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_PUB_KEY, pub_key) != 1)
+ {
+ DST_RET(dst__openssl_toresult2("OSSL_PARAM_BLD_push_BN",
+ DST_R_OPENSSLFAILURE));
+ }
+ params = OSSL_PARAM_BLD_to_param(bld);
+ if (params == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_fromdata_init(ctx) != 1) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_fromdata_init",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_fromdata(ctx, &pkey, OSSL_KEYMGMT_SELECT_ALL, params) !=
+ 1 ||
+ pkey == NULL)
+ {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_fromdata",
+ DST_R_OPENSSLFAILURE));
+ }
+
+ key->keydata.pkey = pkey;
+ pkey = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ key->key_size = (unsigned int)key_size;
+
+ ret = ISC_R_SUCCESS;
+
+err:
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (dh != NULL) {
+ DH_free(dh);
+ }
+#else
+ if (pkey != NULL) {
+ EVP_PKEY_free(pkey);
+ }
+ if (ctx != NULL) {
+ EVP_PKEY_CTX_free(ctx);
+ }
+ if (params != NULL) {
+ OSSL_PARAM_free(params);
+ }
+ if (bld != NULL) {
+ OSSL_PARAM_BLD_free(bld);
+ }
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ if (p != NULL) {
+ BN_free(p);
+ }
+ if (g != NULL) {
+ BN_free(g);
+ }
+ if (pub_key != NULL) {
+ BN_free(pub_key);
+ }
+
+ return (ret);
+}
+
+static isc_result_t
+openssldh_tofile(const dst_key_t *key, const char *directory) {
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh;
+ const BIGNUM *pub_key = NULL, *priv_key = NULL, *p = NULL, *g = NULL;
+#else
+ EVP_PKEY *pkey;
+ BIGNUM *pub_key = NULL, *priv_key = NULL, *p = NULL, *g = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ dst_private_t priv;
+ unsigned char *bufs[4] = { NULL };
+ unsigned short i = 0;
+ isc_result_t result;
+
+ if (key->external) {
+ return (DST_R_EXTERNALKEY);
+ }
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (key->keydata.dh == NULL) {
+ return (DST_R_NULLKEY);
+ }
+
+ dh = key->keydata.dh;
+ DH_get0_key(dh, &pub_key, &priv_key);
+ DH_get0_pqg(dh, &p, NULL, &g);
+#else
+ if (key->keydata.pkey == NULL) {
+ return (DST_R_NULLKEY);
+ }
+
+ pkey = key->keydata.pkey;
+ EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_FFC_P, &p);
+ EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_FFC_G, &g);
+ EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_PUB_KEY, &pub_key);
+ EVP_PKEY_get_bn_param(pkey, OSSL_PKEY_PARAM_PRIV_KEY, &priv_key);
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ priv.elements[i].tag = TAG_DH_PRIME;
+ priv.elements[i].length = BN_num_bytes(p);
+ bufs[i] = isc_mem_get(key->mctx, priv.elements[i].length);
+ BN_bn2bin(p, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ priv.elements[i].tag = TAG_DH_GENERATOR;
+ priv.elements[i].length = BN_num_bytes(g);
+ bufs[i] = isc_mem_get(key->mctx, priv.elements[i].length);
+ BN_bn2bin(g, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ priv.elements[i].tag = TAG_DH_PRIVATE;
+ priv.elements[i].length = BN_num_bytes(priv_key);
+ bufs[i] = isc_mem_get(key->mctx, priv.elements[i].length);
+ BN_bn2bin(priv_key, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ priv.elements[i].tag = TAG_DH_PUBLIC;
+ priv.elements[i].length = BN_num_bytes(pub_key);
+ bufs[i] = isc_mem_get(key->mctx, priv.elements[i].length);
+ BN_bn2bin(pub_key, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ priv.nelements = i;
+ result = dst__privstruct_writefile(key, &priv, directory);
+
+ while (i--) {
+ if (bufs[i] != NULL) {
+ isc_mem_put(key->mctx, bufs[i],
+ priv.elements[i].length);
+ }
+ }
+
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000
+ if (p != NULL) {
+ BN_free(p);
+ }
+ if (g != NULL) {
+ BN_free(g);
+ }
+ if (pub_key != NULL) {
+ BN_free(pub_key);
+ }
+ if (priv_key != NULL) {
+ BN_clear_free(priv_key);
+ }
+#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L && OPENSSL_API_LEVEL >= 30000 \
+ */
+
+ return (result);
+}
+
+static isc_result_t
+openssldh_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t ret;
+ int i;
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ DH *dh = NULL;
+#else
+ OSSL_PARAM_BLD *bld = NULL;
+ OSSL_PARAM *params = NULL;
+ EVP_PKEY_CTX *ctx = NULL;
+ EVP_PKEY *pkey = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ BIGNUM *pub_key = NULL, *priv_key = NULL, *p = NULL, *g = NULL;
+ int key_size = 0;
+ isc_mem_t *mctx;
+
+ UNUSED(pub);
+ mctx = key->mctx;
+
+ /* read private key file */
+ ret = dst__privstruct_parse(key, DST_ALG_DH, lexer, mctx, &priv);
+ if (ret != ISC_R_SUCCESS) {
+ return (ret);
+ }
+
+ if (key->external) {
+ DST_RET(DST_R_EXTERNALKEY);
+ }
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ dh = DH_new();
+ if (dh == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+ DH_clear_flags(dh, DH_FLAG_CACHE_MONT_P);
+#else
+ bld = OSSL_PARAM_BLD_new();
+ if (bld == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ ctx = EVP_PKEY_CTX_new_from_name(NULL, "DH", NULL);
+ if (ctx == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ for (i = 0; i < priv.nelements; i++) {
+ BIGNUM *bn;
+ bn = BN_bin2bn(priv.elements[i].data, priv.elements[i].length,
+ NULL);
+ if (bn == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+
+ switch (priv.elements[i].tag) {
+ case TAG_DH_PRIME:
+ p = bn;
+ key_size = BN_num_bits(p);
+ break;
+ case TAG_DH_GENERATOR:
+ g = bn;
+ break;
+ case TAG_DH_PRIVATE:
+ priv_key = bn;
+ break;
+ case TAG_DH_PUBLIC:
+ pub_key = bn;
+ break;
+ }
+ }
+
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (DH_set0_key(dh, pub_key, priv_key) != 1) {
+ DST_RET(dst__openssl_toresult2("DH_set0_key",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (DH_set0_pqg(dh, p, NULL, g) != 1) {
+ DST_RET(dst__openssl_toresult2("DH_set0_pqg",
+ DST_R_OPENSSLFAILURE));
+ }
+
+ /* These are now managed by OpenSSL */
+ pub_key = NULL;
+ priv_key = NULL;
+ p = NULL;
+ g = NULL;
+
+ key->keydata.dh = dh;
+ dh = NULL;
+#else
+ if (OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_PUB_KEY, pub_key) !=
+ 1 ||
+ OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_PRIV_KEY, priv_key) !=
+ 1 ||
+ OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_FFC_P, p) != 1 ||
+ OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_FFC_G, g) != 1)
+ {
+ DST_RET(dst__openssl_toresult2("OSSL_PARAM_BLD_push_BN",
+ DST_R_OPENSSLFAILURE));
+ }
+ params = OSSL_PARAM_BLD_to_param(bld);
+ if (params == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_fromdata_init(ctx) != 1) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_fromdata_init",
+ DST_R_OPENSSLFAILURE));
+ }
+ if (EVP_PKEY_fromdata(ctx, &pkey, OSSL_KEYMGMT_SELECT_ALL, params) !=
+ 1 ||
+ pkey == NULL)
+ {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_fromdata",
+ DST_R_OPENSSLFAILURE));
+ }
+
+ key->keydata.pkey = pkey;
+ pkey = NULL;
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+
+ key->key_size = (unsigned int)key_size;
+ ret = ISC_R_SUCCESS;
+
+err:
+#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
+ if (dh != NULL) {
+ DH_free(dh);
+ }
+#else
+ if (pkey != NULL) {
+ EVP_PKEY_free(pkey);
+ }
+ if (ctx != NULL) {
+ EVP_PKEY_CTX_free(ctx);
+ }
+ if (params != NULL) {
+ OSSL_PARAM_free(params);
+ }
+ if (bld != NULL) {
+ OSSL_PARAM_BLD_free(bld);
+ }
+#endif /* OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000 */
+ if (p != NULL) {
+ BN_free(p);
+ }
+ if (g != NULL) {
+ BN_free(g);
+ }
+ if (pub_key != NULL) {
+ BN_free(pub_key);
+ }
+ if (priv_key != NULL) {
+ BN_clear_free(priv_key);
+ }
+ if (ret != ISC_R_SUCCESS) {
+ openssldh_destroy(key);
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+
+ return (ret);
+}
+
+static void
+openssldh_cleanup(void) {
+ BN_free(bn2);
+ bn2 = NULL;
+
+ BN_free(bn768);
+ bn768 = NULL;
+
+ BN_free(bn1024);
+ bn1024 = NULL;
+
+ BN_free(bn1536);
+ bn1536 = NULL;
+}
+
+static dst_func_t openssldh_functions = {
+ NULL, /*%< createctx */
+ NULL, /*%< createctx2 */
+ NULL, /*%< destroyctx */
+ NULL, /*%< adddata */
+ NULL, /*%< openssldh_sign */
+ NULL, /*%< openssldh_verify */
+ NULL, /*%< openssldh_verify2 */
+ openssldh_computesecret,
+ openssldh_compare,
+ openssldh_paramcompare,
+ openssldh_generate,
+ openssldh_isprivate,
+ openssldh_destroy,
+ openssldh_todns,
+ openssldh_fromdns,
+ openssldh_tofile,
+ openssldh_parse,
+ openssldh_cleanup,
+ NULL, /*%< fromlabel */
+ NULL, /*%< dump */
+ NULL, /*%< restore */
+};
+
+isc_result_t
+dst__openssldh_init(dst_func_t **funcp) {
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL) {
+ if (BN_hex2bn(&bn2, PRIME2) == 0 || bn2 == NULL) {
+ goto cleanup;
+ }
+ if (BN_hex2bn(&bn768, PRIME768) == 0 || bn768 == NULL) {
+ goto cleanup;
+ }
+ if (BN_hex2bn(&bn1024, PRIME1024) == 0 || bn1024 == NULL) {
+ goto cleanup;
+ }
+ if (BN_hex2bn(&bn1536, PRIME1536) == 0 || bn1536 == NULL) {
+ goto cleanup;
+ }
+ *funcp = &openssldh_functions;
+ }
+ return (ISC_R_SUCCESS);
+
+cleanup:
+ if (bn2 != NULL) {
+ BN_free(bn2);
+ }
+ if (bn768 != NULL) {
+ BN_free(bn768);
+ }
+ if (bn1024 != NULL) {
+ BN_free(bn1024);
+ }
+ if (bn1536 != NULL) {
+ BN_free(bn1536);
+ }
+ return (ISC_R_NOMEMORY);
+}