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-rw-r--r--lib/dns/opensslecdsa_link.c657
1 files changed, 657 insertions, 0 deletions
diff --git a/lib/dns/opensslecdsa_link.c b/lib/dns/opensslecdsa_link.c
new file mode 100644
index 0000000..e9ea5ea
--- /dev/null
+++ b/lib/dns/opensslecdsa_link.c
@@ -0,0 +1,657 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("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 http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <config.h>
+
+#if defined(OPENSSL) && defined(HAVE_OPENSSL_ECDSA)
+
+#if !defined(HAVE_EVP_SHA256) || !defined(HAVE_EVP_SHA384)
+#error "ECDSA without EVP for SHA2?"
+#endif
+
+#include <stdbool.h>
+
+
+#include <isc/entropy.h>
+#include <isc/mem.h>
+#include <isc/safe.h>
+#include <isc/sha2.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <dns/keyvalues.h>
+#include <dst/result.h>
+
+#include "dst_internal.h"
+#include "dst_openssl.h"
+#include "dst_parse.h"
+
+#include <openssl/err.h>
+#include <openssl/objects.h>
+#include <openssl/ecdsa.h>
+#include <openssl/bn.h>
+
+#ifndef NID_X9_62_prime256v1
+#error "P-256 group is not known (NID_X9_62_prime256v1)"
+#endif
+#ifndef NID_secp384r1
+#error "P-384 group is not known (NID_secp384r1)"
+#endif
+
+#define DST_RET(a) {ret = a; goto err;}
+
+#if !defined(HAVE_ECDSA_SIG_GET0)
+/* From OpenSSL 1.1 */
+static void
+ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps) {
+ if (pr != NULL) {
+ *pr = sig->r;
+ }
+ if (ps != NULL) {
+ *ps = sig->s;
+ }
+}
+
+static int
+ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s) {
+ if (r == NULL || s == NULL) {
+ return 0;
+ }
+
+ BN_clear_free(sig->r);
+ BN_clear_free(sig->s);
+ sig->r = r;
+ sig->s = s;
+
+ return 1;
+}
+#endif
+
+static isc_result_t opensslecdsa_todns(const dst_key_t *key,
+ isc_buffer_t *data);
+
+static isc_result_t
+opensslecdsa_createctx(dst_key_t *key, dst_context_t *dctx) {
+ EVP_MD_CTX *evp_md_ctx;
+ const EVP_MD *type = NULL;
+
+ UNUSED(key);
+ REQUIRE(dctx->key->key_alg == DST_ALG_ECDSA256 ||
+ dctx->key->key_alg == DST_ALG_ECDSA384);
+
+ evp_md_ctx = EVP_MD_CTX_create();
+ if (evp_md_ctx == NULL)
+ return (ISC_R_NOMEMORY);
+ if (dctx->key->key_alg == DST_ALG_ECDSA256)
+ type = EVP_sha256();
+ else
+ type = EVP_sha384();
+
+ if (!EVP_DigestInit_ex(evp_md_ctx, type, NULL)) {
+ EVP_MD_CTX_destroy(evp_md_ctx);
+ return (dst__openssl_toresult3(dctx->category,
+ "EVP_DigestInit_ex",
+ ISC_R_FAILURE));
+ }
+
+ dctx->ctxdata.evp_md_ctx = evp_md_ctx;
+
+ return (ISC_R_SUCCESS);
+}
+
+static void
+opensslecdsa_destroyctx(dst_context_t *dctx) {
+ EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
+
+ REQUIRE(dctx->key->key_alg == DST_ALG_ECDSA256 ||
+ dctx->key->key_alg == DST_ALG_ECDSA384);
+
+ if (evp_md_ctx != NULL) {
+ EVP_MD_CTX_destroy(evp_md_ctx);
+ dctx->ctxdata.evp_md_ctx = NULL;
+ }
+}
+
+static isc_result_t
+opensslecdsa_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
+
+ REQUIRE(dctx->key->key_alg == DST_ALG_ECDSA256 ||
+ dctx->key->key_alg == DST_ALG_ECDSA384);
+
+ if (!EVP_DigestUpdate(evp_md_ctx, data->base, data->length))
+ return (dst__openssl_toresult3(dctx->category,
+ "EVP_DigestUpdate",
+ ISC_R_FAILURE));
+
+ return (ISC_R_SUCCESS);
+}
+
+static int
+BN_bn2bin_fixed(const BIGNUM *bn, unsigned char *buf, int size) {
+ int bytes = size - BN_num_bytes(bn);
+
+ while (bytes-- > 0)
+ *buf++ = 0;
+ BN_bn2bin(bn, buf);
+ return (size);
+}
+
+static isc_result_t
+opensslecdsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ isc_result_t ret;
+ dst_key_t *key = dctx->key;
+ isc_region_t region;
+ ECDSA_SIG *ecdsasig;
+ EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
+ EVP_PKEY *pkey = key->keydata.pkey;
+ EC_KEY *eckey = EVP_PKEY_get1_EC_KEY(pkey);
+ unsigned int dgstlen, siglen;
+ unsigned char digest[EVP_MAX_MD_SIZE];
+ const BIGNUM *r, *s;
+
+ REQUIRE(key->key_alg == DST_ALG_ECDSA256 ||
+ key->key_alg == DST_ALG_ECDSA384);
+
+ if (eckey == NULL)
+ return (ISC_R_FAILURE);
+
+ if (key->key_alg == DST_ALG_ECDSA256)
+ siglen = DNS_SIG_ECDSA256SIZE;
+ else
+ siglen = DNS_SIG_ECDSA384SIZE;
+
+ isc_buffer_availableregion(sig, &region);
+ if (region.length < siglen)
+ DST_RET(ISC_R_NOSPACE);
+
+ if (!EVP_DigestFinal(evp_md_ctx, digest, &dgstlen))
+ DST_RET(dst__openssl_toresult3(dctx->category,
+ "EVP_DigestFinal",
+ ISC_R_FAILURE));
+
+ ecdsasig = ECDSA_do_sign(digest, dgstlen, eckey);
+ if (ecdsasig == NULL)
+ DST_RET(dst__openssl_toresult3(dctx->category,
+ "ECDSA_do_sign",
+ DST_R_SIGNFAILURE));
+ ECDSA_SIG_get0(ecdsasig, &r, &s);
+ BN_bn2bin_fixed(r, region.base, siglen / 2);
+ isc_region_consume(&region, siglen / 2);
+ BN_bn2bin_fixed(s, region.base, siglen / 2);
+ isc_region_consume(&region, siglen / 2);
+ ECDSA_SIG_free(ecdsasig);
+ isc_buffer_add(sig, siglen);
+ ret = ISC_R_SUCCESS;
+
+ err:
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ return (ret);
+}
+
+static isc_result_t
+opensslecdsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ isc_result_t ret;
+ dst_key_t *key = dctx->key;
+ int status;
+ unsigned char *cp = sig->base;
+ ECDSA_SIG *ecdsasig = NULL;
+ EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
+ EVP_PKEY *pkey = key->keydata.pkey;
+ EC_KEY *eckey = EVP_PKEY_get1_EC_KEY(pkey);
+ unsigned int dgstlen, siglen;
+ unsigned char digest[EVP_MAX_MD_SIZE];
+ BIGNUM *r = NULL, *s = NULL ;
+
+ REQUIRE(key->key_alg == DST_ALG_ECDSA256 ||
+ key->key_alg == DST_ALG_ECDSA384);
+
+ if (eckey == NULL)
+ return (ISC_R_FAILURE);
+
+ if (key->key_alg == DST_ALG_ECDSA256)
+ siglen = DNS_SIG_ECDSA256SIZE;
+ else
+ siglen = DNS_SIG_ECDSA384SIZE;
+
+ if (sig->length != siglen)
+ return (DST_R_VERIFYFAILURE);
+
+ if (!EVP_DigestFinal_ex(evp_md_ctx, digest, &dgstlen))
+ DST_RET (dst__openssl_toresult3(dctx->category,
+ "EVP_DigestFinal_ex",
+ ISC_R_FAILURE));
+
+ ecdsasig = ECDSA_SIG_new();
+ if (ecdsasig == NULL)
+ DST_RET (ISC_R_NOMEMORY);
+ r = BN_bin2bn(cp, siglen / 2, NULL);
+ cp += siglen / 2;
+ s = BN_bin2bn(cp, siglen / 2, NULL);
+ ECDSA_SIG_set0(ecdsasig, r, s);
+ /* cp += siglen / 2; */
+
+ status = ECDSA_do_verify(digest, dgstlen, ecdsasig, eckey);
+ switch (status) {
+ case 1:
+ ret = ISC_R_SUCCESS;
+ break;
+ case 0:
+ ret = dst__openssl_toresult(DST_R_VERIFYFAILURE);
+ break;
+ default:
+ ret = dst__openssl_toresult3(dctx->category,
+ "ECDSA_do_verify",
+ DST_R_VERIFYFAILURE);
+ break;
+ }
+
+ err:
+ if (ecdsasig != NULL)
+ ECDSA_SIG_free(ecdsasig);
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ return (ret);
+}
+
+static bool
+opensslecdsa_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ bool ret;
+ int status;
+ EVP_PKEY *pkey1 = key1->keydata.pkey;
+ EVP_PKEY *pkey2 = key2->keydata.pkey;
+ EC_KEY *eckey1 = NULL;
+ EC_KEY *eckey2 = NULL;
+ const BIGNUM *priv1, *priv2;
+
+ if (pkey1 == NULL && pkey2 == NULL)
+ return (true);
+ else if (pkey1 == NULL || pkey2 == NULL)
+ return (false);
+
+ eckey1 = EVP_PKEY_get1_EC_KEY(pkey1);
+ eckey2 = EVP_PKEY_get1_EC_KEY(pkey2);
+ if (eckey1 == NULL && eckey2 == NULL) {
+ DST_RET (true);
+ } else if (eckey1 == NULL || eckey2 == NULL)
+ DST_RET (false);
+
+ status = EVP_PKEY_cmp(pkey1, pkey2);
+ if (status != 1)
+ DST_RET (false);
+
+ priv1 = EC_KEY_get0_private_key(eckey1);
+ priv2 = EC_KEY_get0_private_key(eckey2);
+ if (priv1 != NULL || priv2 != NULL) {
+ if (priv1 == NULL || priv2 == NULL)
+ DST_RET (false);
+ if (BN_cmp(priv1, priv2) != 0)
+ DST_RET (false);
+ }
+ ret = true;
+
+ err:
+ if (eckey1 != NULL)
+ EC_KEY_free(eckey1);
+ if (eckey2 != NULL)
+ EC_KEY_free(eckey2);
+ return (ret);
+}
+
+static isc_result_t
+opensslecdsa_generate(dst_key_t *key, int unused, void (*callback)(int)) {
+ isc_result_t ret;
+ EVP_PKEY *pkey;
+ EC_KEY *eckey = NULL;
+ int group_nid;
+
+ REQUIRE(key->key_alg == DST_ALG_ECDSA256 ||
+ key->key_alg == DST_ALG_ECDSA384);
+ UNUSED(unused);
+ UNUSED(callback);
+
+ if (key->key_alg == DST_ALG_ECDSA256) {
+ group_nid = NID_X9_62_prime256v1;
+ key->key_size = DNS_KEY_ECDSA256SIZE * 4;
+ } else {
+ group_nid = NID_secp384r1;
+ key->key_size = DNS_KEY_ECDSA384SIZE * 4;
+ }
+
+ eckey = EC_KEY_new_by_curve_name(group_nid);
+ if (eckey == NULL)
+ return (dst__openssl_toresult2("EC_KEY_new_by_curve_name",
+ DST_R_OPENSSLFAILURE));
+
+ if (EC_KEY_generate_key(eckey) != 1)
+ DST_RET (dst__openssl_toresult2("EC_KEY_generate_key",
+ DST_R_OPENSSLFAILURE));
+
+ pkey = EVP_PKEY_new();
+ if (pkey == NULL)
+ DST_RET (ISC_R_NOMEMORY);
+ if (!EVP_PKEY_set1_EC_KEY(pkey, eckey)) {
+ EVP_PKEY_free(pkey);
+ DST_RET (ISC_R_FAILURE);
+ }
+ key->keydata.pkey = pkey;
+ ret = ISC_R_SUCCESS;
+
+ err:
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ return (ret);
+}
+
+static bool
+opensslecdsa_isprivate(const dst_key_t *key) {
+ bool ret;
+ EVP_PKEY *pkey = key->keydata.pkey;
+ EC_KEY *eckey = EVP_PKEY_get1_EC_KEY(pkey);
+
+ ret = (eckey != NULL && EC_KEY_get0_private_key(eckey) != NULL);
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ return (ret);
+}
+
+static void
+opensslecdsa_destroy(dst_key_t *key) {
+ EVP_PKEY *pkey = key->keydata.pkey;
+
+ EVP_PKEY_free(pkey);
+ key->keydata.pkey = NULL;
+}
+
+static isc_result_t
+opensslecdsa_todns(const dst_key_t *key, isc_buffer_t *data) {
+ isc_result_t ret;
+ EVP_PKEY *pkey;
+ EC_KEY *eckey = NULL;
+ isc_region_t r;
+ int len;
+ unsigned char *cp;
+ unsigned char buf[DNS_KEY_ECDSA384SIZE + 1];
+
+ REQUIRE(key->keydata.pkey != NULL);
+
+ pkey = key->keydata.pkey;
+ eckey = EVP_PKEY_get1_EC_KEY(pkey);
+ if (eckey == NULL)
+ return (dst__openssl_toresult(ISC_R_FAILURE));
+ len = i2o_ECPublicKey(eckey, NULL);
+ /* skip form */
+ len--;
+
+ isc_buffer_availableregion(data, &r);
+ if (r.length < (unsigned int) len)
+ DST_RET (ISC_R_NOSPACE);
+ cp = buf;
+ if (!i2o_ECPublicKey(eckey, &cp))
+ DST_RET (dst__openssl_toresult(ISC_R_FAILURE));
+ memmove(r.base, buf + 1, len);
+ isc_buffer_add(data, len);
+ ret = ISC_R_SUCCESS;
+
+ err:
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ return (ret);
+}
+
+static isc_result_t
+opensslecdsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ isc_result_t ret;
+ EVP_PKEY *pkey;
+ EC_KEY *eckey = NULL;
+ isc_region_t r;
+ int group_nid;
+ unsigned int len;
+ const unsigned char *cp;
+ unsigned char buf[DNS_KEY_ECDSA384SIZE + 1];
+
+ REQUIRE(key->key_alg == DST_ALG_ECDSA256 ||
+ key->key_alg == DST_ALG_ECDSA384);
+
+ if (key->key_alg == DST_ALG_ECDSA256) {
+ len = DNS_KEY_ECDSA256SIZE;
+ group_nid = NID_X9_62_prime256v1;
+ } else {
+ len = DNS_KEY_ECDSA384SIZE;
+ group_nid = NID_secp384r1;
+ }
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0)
+ return (ISC_R_SUCCESS);
+ if (r.length < len)
+ return (DST_R_INVALIDPUBLICKEY);
+
+ eckey = EC_KEY_new_by_curve_name(group_nid);
+ if (eckey == NULL)
+ return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+
+ buf[0] = POINT_CONVERSION_UNCOMPRESSED;
+ memmove(buf + 1, r.base, len);
+ cp = buf;
+ if (o2i_ECPublicKey(&eckey,
+ (const unsigned char **) &cp,
+ (long) len + 1) == NULL)
+ DST_RET (dst__openssl_toresult(DST_R_INVALIDPUBLICKEY));
+ if (EC_KEY_check_key(eckey) != 1)
+ DST_RET (dst__openssl_toresult(DST_R_INVALIDPUBLICKEY));
+
+ pkey = EVP_PKEY_new();
+ if (pkey == NULL)
+ DST_RET (ISC_R_NOMEMORY);
+ if (!EVP_PKEY_set1_EC_KEY(pkey, eckey)) {
+ EVP_PKEY_free(pkey);
+ DST_RET (dst__openssl_toresult(ISC_R_FAILURE));
+ }
+
+ isc_buffer_forward(data, len);
+ key->keydata.pkey = pkey;
+ key->key_size = len * 4;
+ ret = ISC_R_SUCCESS;
+
+ err:
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ return (ret);
+}
+
+static isc_result_t
+opensslecdsa_tofile(const dst_key_t *key, const char *directory) {
+ isc_result_t ret;
+ EVP_PKEY *pkey;
+ EC_KEY *eckey = NULL;
+ const BIGNUM *privkey;
+ dst_private_t priv;
+ unsigned char *buf = NULL;
+
+ if (key->keydata.pkey == NULL)
+ return (DST_R_NULLKEY);
+
+ if (key->external) {
+ priv.nelements = 0;
+ return (dst__privstruct_writefile(key, &priv, directory));
+ }
+
+ pkey = key->keydata.pkey;
+ eckey = EVP_PKEY_get1_EC_KEY(pkey);
+ if (eckey == NULL)
+ return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ privkey = EC_KEY_get0_private_key(eckey);
+ if (privkey == NULL)
+ DST_RET (ISC_R_FAILURE);
+
+ buf = isc_mem_get(key->mctx, BN_num_bytes(privkey));
+ if (buf == NULL)
+ DST_RET (ISC_R_NOMEMORY);
+
+ priv.elements[0].tag = TAG_ECDSA_PRIVATEKEY;
+ priv.elements[0].length = BN_num_bytes(privkey);
+ BN_bn2bin(privkey, buf);
+ priv.elements[0].data = buf;
+ priv.nelements = 1;
+ ret = dst__privstruct_writefile(key, &priv, directory);
+
+ err:
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ if (buf != NULL)
+ isc_mem_put(key->mctx, buf, BN_num_bytes(privkey));
+ return (ret);
+}
+
+static isc_result_t
+ecdsa_check(EC_KEY *eckey, dst_key_t *pub)
+{
+ isc_result_t ret = ISC_R_FAILURE;
+ EVP_PKEY *pkey;
+ EC_KEY *pubeckey = NULL;
+ const EC_POINT *pubkey;
+
+ if (pub == NULL)
+ return (ISC_R_SUCCESS);
+ pkey = pub->keydata.pkey;
+ if (pkey == NULL)
+ return (ISC_R_SUCCESS);
+ pubeckey = EVP_PKEY_get1_EC_KEY(pkey);
+ if (pubeckey == NULL)
+ return (ISC_R_SUCCESS);
+ pubkey = EC_KEY_get0_public_key(pubeckey);
+ if (pubkey == NULL)
+ DST_RET (ISC_R_SUCCESS);
+ if (EC_KEY_set_public_key(eckey, pubkey) != 1)
+ DST_RET (ISC_R_SUCCESS);
+ if (EC_KEY_check_key(eckey) == 1)
+ DST_RET (ISC_R_SUCCESS);
+
+ err:
+ if (pubeckey != NULL)
+ EC_KEY_free(pubeckey);
+ return (ret);
+}
+
+static isc_result_t
+opensslecdsa_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t ret;
+ EVP_PKEY *pkey;
+ EC_KEY *eckey = NULL;
+ BIGNUM *privkey = NULL;
+ int group_nid;
+ isc_mem_t *mctx = key->mctx;
+
+ REQUIRE(key->key_alg == DST_ALG_ECDSA256 ||
+ key->key_alg == DST_ALG_ECDSA384);
+
+ /* read private key file */
+ ret = dst__privstruct_parse(key, DST_ALG_ECDSA256, lexer, mctx, &priv);
+ if (ret != ISC_R_SUCCESS)
+ goto err;
+
+ if (key->external) {
+ if (priv.nelements != 0)
+ DST_RET(DST_R_INVALIDPRIVATEKEY);
+ if (pub == NULL)
+ DST_RET(DST_R_INVALIDPRIVATEKEY);
+ key->keydata.pkey = pub->keydata.pkey;
+ pub->keydata.pkey = NULL;
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (ISC_R_SUCCESS);
+ }
+
+ if (key->key_alg == DST_ALG_ECDSA256)
+ group_nid = NID_X9_62_prime256v1;
+ else
+ group_nid = NID_secp384r1;
+
+ eckey = EC_KEY_new_by_curve_name(group_nid);
+ if (eckey == NULL)
+ return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+
+ privkey = BN_bin2bn(priv.elements[0].data,
+ priv.elements[0].length, NULL);
+ if (privkey == NULL)
+ DST_RET(ISC_R_NOMEMORY);
+ if (!EC_KEY_set_private_key(eckey, privkey))
+ DST_RET(ISC_R_NOMEMORY);
+ if (ecdsa_check(eckey, pub) != ISC_R_SUCCESS)
+ DST_RET(DST_R_INVALIDPRIVATEKEY);
+
+ pkey = EVP_PKEY_new();
+ if (pkey == NULL)
+ DST_RET (ISC_R_NOMEMORY);
+ if (!EVP_PKEY_set1_EC_KEY(pkey, eckey)) {
+ EVP_PKEY_free(pkey);
+ DST_RET (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ key->keydata.pkey = pkey;
+ if (key->key_alg == DST_ALG_ECDSA256)
+ key->key_size = DNS_KEY_ECDSA256SIZE * 4;
+ else
+ key->key_size = DNS_KEY_ECDSA384SIZE * 4;
+ ret = ISC_R_SUCCESS;
+
+ err:
+ if (privkey != NULL)
+ BN_clear_free(privkey);
+ if (eckey != NULL)
+ EC_KEY_free(eckey);
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (ret);
+}
+
+static dst_func_t opensslecdsa_functions = {
+ opensslecdsa_createctx,
+ NULL, /*%< createctx2 */
+ opensslecdsa_destroyctx,
+ opensslecdsa_adddata,
+ opensslecdsa_sign,
+ opensslecdsa_verify,
+ NULL, /*%< verify2 */
+ NULL, /*%< computesecret */
+ opensslecdsa_compare,
+ NULL, /*%< paramcompare */
+ opensslecdsa_generate,
+ opensslecdsa_isprivate,
+ opensslecdsa_destroy,
+ opensslecdsa_todns,
+ opensslecdsa_fromdns,
+ opensslecdsa_tofile,
+ opensslecdsa_parse,
+ NULL, /*%< cleanup */
+ NULL, /*%< fromlabel */
+ NULL, /*%< dump */
+ NULL, /*%< restore */
+};
+
+isc_result_t
+dst__opensslecdsa_init(dst_func_t **funcp) {
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL)
+ *funcp = &opensslecdsa_functions;
+ return (ISC_R_SUCCESS);
+}
+
+#else /* HAVE_OPENSSL_ECDSA */
+
+#include <isc/util.h>
+
+EMPTY_TRANSLATION_UNIT
+
+#endif /* HAVE_OPENSSL_ECDSA */
+/*! \file */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 03:54:28 +0000