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-rw-r--r--lib/dns/hmac_link.c1811
1 files changed, 1811 insertions, 0 deletions
diff --git a/lib/dns/hmac_link.c b/lib/dns/hmac_link.c
new file mode 100644
index 0000000..94e73b1
--- /dev/null
+++ b/lib/dns/hmac_link.c
@@ -0,0 +1,1811 @@
+/*
+ * Portions 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.
+ *
+ * Portions 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.
+ */
+
+#include <config.h>
+
+#include <stdbool.h>
+
+#include <isc/buffer.h>
+#include <isc/hmacmd5.h>
+#include <isc/hmacsha.h>
+#include <isc/md5.h>
+#include <isc/sha1.h>
+#include <isc/mem.h>
+#include <isc/safe.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <pk11/site.h>
+
+#include <dst/result.h>
+
+#include "dst_internal.h"
+#ifdef HAVE_FIPS_MODE
+#include "dst_openssl.h" /* FIPS_mode() prototype */
+#endif
+#include "dst_parse.h"
+
+#ifndef PK11_MD5_DISABLE
+static isc_result_t hmacmd5_fromdns(dst_key_t *key, isc_buffer_t *data);
+
+struct dst_hmacmd5_key {
+ unsigned char key[ISC_MD5_BLOCK_LENGTH];
+};
+#endif
+
+static isc_result_t
+getkeybits(dst_key_t *key, struct dst_private_element *element) {
+
+ if (element->length != 2)
+ return (DST_R_INVALIDPRIVATEKEY);
+
+ key->key_bits = (element->data[0] << 8) + element->data[1];
+
+ return (ISC_R_SUCCESS);
+}
+
+#ifndef PK11_MD5_DISABLE
+static isc_result_t
+hmacmd5_createctx(dst_key_t *key, dst_context_t *dctx) {
+ isc_hmacmd5_t *hmacmd5ctx;
+ dst_hmacmd5_key_t *hkey = key->keydata.hmacmd5;
+
+ hmacmd5ctx = isc_mem_get(dctx->mctx, sizeof(isc_hmacmd5_t));
+ if (hmacmd5ctx == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_hmacmd5_init(hmacmd5ctx, hkey->key, ISC_MD5_BLOCK_LENGTH);
+ dctx->ctxdata.hmacmd5ctx = hmacmd5ctx;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+hmacmd5_destroyctx(dst_context_t *dctx) {
+ isc_hmacmd5_t *hmacmd5ctx = dctx->ctxdata.hmacmd5ctx;
+
+ if (hmacmd5ctx != NULL) {
+ isc_hmacmd5_invalidate(hmacmd5ctx);
+ isc_mem_put(dctx->mctx, hmacmd5ctx, sizeof(isc_hmacmd5_t));
+ dctx->ctxdata.hmacmd5ctx = NULL;
+ }
+}
+
+static isc_result_t
+hmacmd5_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ isc_hmacmd5_t *hmacmd5ctx = dctx->ctxdata.hmacmd5ctx;
+
+ isc_hmacmd5_update(hmacmd5ctx, data->base, data->length);
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacmd5_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ isc_hmacmd5_t *hmacmd5ctx = dctx->ctxdata.hmacmd5ctx;
+ unsigned char *digest;
+
+ if (isc_buffer_availablelength(sig) < ISC_MD5_DIGESTLENGTH)
+ return (ISC_R_NOSPACE);
+ digest = isc_buffer_used(sig);
+ isc_hmacmd5_sign(hmacmd5ctx, digest);
+ isc_buffer_add(sig, ISC_MD5_DIGESTLENGTH);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacmd5_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ isc_hmacmd5_t *hmacmd5ctx = dctx->ctxdata.hmacmd5ctx;
+
+ if (sig->length > ISC_MD5_DIGESTLENGTH)
+ return (DST_R_VERIFYFAILURE);
+
+ if (isc_hmacmd5_verify2(hmacmd5ctx, sig->base, sig->length))
+ return (ISC_R_SUCCESS);
+ else
+ return (DST_R_VERIFYFAILURE);
+}
+
+static bool
+hmacmd5_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ dst_hmacmd5_key_t *hkey1, *hkey2;
+
+ hkey1 = key1->keydata.hmacmd5;
+ hkey2 = key2->keydata.hmacmd5;
+
+ if (hkey1 == NULL && hkey2 == NULL)
+ return (true);
+ else if (hkey1 == NULL || hkey2 == NULL)
+ return (false);
+
+ if (isc_safe_memequal(hkey1->key, hkey2->key, ISC_MD5_BLOCK_LENGTH))
+ return (true);
+ else
+ return (false);
+}
+
+static isc_result_t
+hmacmd5_generate(dst_key_t *key, int pseudorandom_ok, void (*callback)(int)) {
+ isc_buffer_t b;
+ isc_result_t ret;
+ unsigned int bytes;
+ unsigned char data[ISC_MD5_BLOCK_LENGTH];
+
+ UNUSED(callback);
+
+ bytes = (key->key_size + 7) / 8;
+ if (bytes > ISC_MD5_BLOCK_LENGTH) {
+ bytes = ISC_MD5_BLOCK_LENGTH;
+ key->key_size = ISC_MD5_BLOCK_LENGTH * 8;
+ }
+
+ memset(data, 0, ISC_MD5_BLOCK_LENGTH);
+ ret = dst__entropy_getdata(data, bytes, pseudorandom_ok);
+
+ if (ret != ISC_R_SUCCESS)
+ return (ret);
+
+ isc_buffer_init(&b, data, bytes);
+ isc_buffer_add(&b, bytes);
+ ret = hmacmd5_fromdns(key, &b);
+ isc_safe_memwipe(data, sizeof(data));
+
+ return (ret);
+}
+
+static bool
+hmacmd5_isprivate(const dst_key_t *key) {
+ UNUSED(key);
+ return (true);
+}
+
+static void
+hmacmd5_destroy(dst_key_t *key) {
+ dst_hmacmd5_key_t *hkey = key->keydata.hmacmd5;
+
+ isc_safe_memwipe(hkey, sizeof(*hkey));
+ isc_mem_put(key->mctx, hkey, sizeof(*hkey));
+ key->keydata.hmacmd5 = NULL;
+}
+
+static isc_result_t
+hmacmd5_todns(const dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacmd5_key_t *hkey;
+ unsigned int bytes;
+
+ REQUIRE(key->keydata.hmacmd5 != NULL);
+
+ hkey = key->keydata.hmacmd5;
+
+ bytes = (key->key_size + 7) / 8;
+ if (isc_buffer_availablelength(data) < bytes)
+ return (ISC_R_NOSPACE);
+ isc_buffer_putmem(data, hkey->key, bytes);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacmd5_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacmd5_key_t *hkey;
+ int keylen;
+ isc_region_t r;
+ isc_md5_t md5ctx;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0)
+ return (ISC_R_SUCCESS);
+
+ hkey = isc_mem_get(key->mctx, sizeof(dst_hmacmd5_key_t));
+ if (hkey == NULL)
+ return (ISC_R_NOMEMORY);
+
+ memset(hkey->key, 0, sizeof(hkey->key));
+
+ if (r.length > ISC_MD5_BLOCK_LENGTH) {
+ isc_md5_init(&md5ctx);
+ isc_md5_update(&md5ctx, r.base, r.length);
+ isc_md5_final(&md5ctx, hkey->key);
+ keylen = ISC_MD5_DIGESTLENGTH;
+ } else {
+ memmove(hkey->key, r.base, r.length);
+ keylen = r.length;
+ }
+
+ key->key_size = keylen * 8;
+ key->keydata.hmacmd5 = hkey;
+
+ isc_buffer_forward(data, r.length);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacmd5_tofile(const dst_key_t *key, const char *directory) {
+ int cnt = 0;
+ dst_hmacmd5_key_t *hkey;
+ dst_private_t priv;
+ int bytes = (key->key_size + 7) / 8;
+ unsigned char buf[2];
+
+ if (key->keydata.hmacmd5 == NULL)
+ return (DST_R_NULLKEY);
+
+ if (key->external)
+ return (DST_R_EXTERNALKEY);
+
+ hkey = key->keydata.hmacmd5;
+
+ priv.elements[cnt].tag = TAG_HMACMD5_KEY;
+ priv.elements[cnt].length = bytes;
+ priv.elements[cnt++].data = hkey->key;
+
+ buf[0] = (key->key_bits >> 8) & 0xffU;
+ buf[1] = key->key_bits & 0xffU;
+ priv.elements[cnt].tag = TAG_HMACMD5_BITS;
+ priv.elements[cnt].data = buf;
+ priv.elements[cnt++].length = 2;
+
+ priv.nelements = cnt;
+ return (dst__privstruct_writefile(key, &priv, directory));
+}
+
+static isc_result_t
+hmacmd5_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t result, tresult;
+ isc_buffer_t b;
+ isc_mem_t *mctx = key->mctx;
+ unsigned int i;
+
+ UNUSED(pub);
+ /* read private key file */
+ result = dst__privstruct_parse(key, DST_ALG_HMACMD5, lexer, mctx,
+ &priv);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ if (key->external)
+ result = DST_R_EXTERNALKEY;
+
+ key->key_bits = 0;
+ for (i = 0; i < priv.nelements && result == ISC_R_SUCCESS; i++) {
+ switch (priv.elements[i].tag) {
+ case TAG_HMACMD5_KEY:
+ isc_buffer_init(&b, priv.elements[i].data,
+ priv.elements[i].length);
+ isc_buffer_add(&b, priv.elements[i].length);
+ tresult = hmacmd5_fromdns(key, &b);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ case TAG_HMACMD5_BITS:
+ tresult = getkeybits(key, &priv.elements[i]);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ default:
+ result = DST_R_INVALIDPRIVATEKEY;
+ break;
+ }
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (result);
+}
+
+static dst_func_t hmacmd5_functions = {
+ hmacmd5_createctx,
+ NULL, /*%< createctx2 */
+ hmacmd5_destroyctx,
+ hmacmd5_adddata,
+ hmacmd5_sign,
+ hmacmd5_verify,
+ NULL, /*%< verify2 */
+ NULL, /*%< computesecret */
+ hmacmd5_compare,
+ NULL, /*%< paramcompare */
+ hmacmd5_generate,
+ hmacmd5_isprivate,
+ hmacmd5_destroy,
+ hmacmd5_todns,
+ hmacmd5_fromdns,
+ hmacmd5_tofile,
+ hmacmd5_parse,
+ NULL, /*%< cleanup */
+ NULL, /*%< fromlabel */
+ NULL, /*%< dump */
+ NULL, /*%< restore */
+};
+
+isc_result_t
+dst__hmacmd5_init(dst_func_t **funcp) {
+#ifdef HAVE_FIPS_MODE
+ /*
+ * Problems from OpenSSL are likely from FIPS mode
+ */
+ int fips_mode = FIPS_mode();
+
+ if (fips_mode != 0) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "FIPS mode is %d: MD5 is only supported "
+ "if the value is 0.\n"
+ "Please disable either FIPS mode or MD5.",
+ fips_mode);
+ }
+#endif
+
+ /*
+ * Prevent use of incorrect crypto
+ */
+
+ RUNTIME_CHECK(isc_md5_check(false));
+ RUNTIME_CHECK(isc_hmacmd5_check(0));
+
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL)
+ *funcp = &hmacmd5_functions;
+ return (ISC_R_SUCCESS);
+}
+#endif
+
+static isc_result_t hmacsha1_fromdns(dst_key_t *key, isc_buffer_t *data);
+
+struct dst_hmacsha1_key {
+ unsigned char key[ISC_SHA1_BLOCK_LENGTH];
+};
+
+static isc_result_t
+hmacsha1_createctx(dst_key_t *key, dst_context_t *dctx) {
+ isc_hmacsha1_t *hmacsha1ctx;
+ dst_hmacsha1_key_t *hkey = key->keydata.hmacsha1;
+
+ hmacsha1ctx = isc_mem_get(dctx->mctx, sizeof(isc_hmacsha1_t));
+ if (hmacsha1ctx == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_hmacsha1_init(hmacsha1ctx, hkey->key, ISC_SHA1_BLOCK_LENGTH);
+ dctx->ctxdata.hmacsha1ctx = hmacsha1ctx;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+hmacsha1_destroyctx(dst_context_t *dctx) {
+ isc_hmacsha1_t *hmacsha1ctx = dctx->ctxdata.hmacsha1ctx;
+
+ if (hmacsha1ctx != NULL) {
+ isc_hmacsha1_invalidate(hmacsha1ctx);
+ isc_mem_put(dctx->mctx, hmacsha1ctx, sizeof(isc_hmacsha1_t));
+ dctx->ctxdata.hmacsha1ctx = NULL;
+ }
+}
+
+static isc_result_t
+hmacsha1_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ isc_hmacsha1_t *hmacsha1ctx = dctx->ctxdata.hmacsha1ctx;
+
+ isc_hmacsha1_update(hmacsha1ctx, data->base, data->length);
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha1_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ isc_hmacsha1_t *hmacsha1ctx = dctx->ctxdata.hmacsha1ctx;
+ unsigned char *digest;
+
+ if (isc_buffer_availablelength(sig) < ISC_SHA1_DIGESTLENGTH)
+ return (ISC_R_NOSPACE);
+ digest = isc_buffer_used(sig);
+ isc_hmacsha1_sign(hmacsha1ctx, digest, ISC_SHA1_DIGESTLENGTH);
+ isc_buffer_add(sig, ISC_SHA1_DIGESTLENGTH);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha1_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ isc_hmacsha1_t *hmacsha1ctx = dctx->ctxdata.hmacsha1ctx;
+
+ if (sig->length > ISC_SHA1_DIGESTLENGTH || sig->length == 0)
+ return (DST_R_VERIFYFAILURE);
+
+ if (isc_hmacsha1_verify(hmacsha1ctx, sig->base, sig->length))
+ return (ISC_R_SUCCESS);
+ else
+ return (DST_R_VERIFYFAILURE);
+}
+
+static bool
+hmacsha1_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ dst_hmacsha1_key_t *hkey1, *hkey2;
+
+ hkey1 = key1->keydata.hmacsha1;
+ hkey2 = key2->keydata.hmacsha1;
+
+ if (hkey1 == NULL && hkey2 == NULL)
+ return (true);
+ else if (hkey1 == NULL || hkey2 == NULL)
+ return (false);
+
+ if (isc_safe_memequal(hkey1->key, hkey2->key, ISC_SHA1_BLOCK_LENGTH))
+ return (true);
+ else
+ return (false);
+}
+
+static isc_result_t
+hmacsha1_generate(dst_key_t *key, int pseudorandom_ok, void (*callback)(int)) {
+ isc_buffer_t b;
+ isc_result_t ret;
+ unsigned int bytes;
+ unsigned char data[ISC_SHA1_BLOCK_LENGTH];
+
+ UNUSED(callback);
+
+ bytes = (key->key_size + 7) / 8;
+ if (bytes > ISC_SHA1_BLOCK_LENGTH) {
+ bytes = ISC_SHA1_BLOCK_LENGTH;
+ key->key_size = ISC_SHA1_BLOCK_LENGTH * 8;
+ }
+
+ memset(data, 0, ISC_SHA1_BLOCK_LENGTH);
+ ret = dst__entropy_getdata(data, bytes, pseudorandom_ok);
+
+ if (ret != ISC_R_SUCCESS)
+ return (ret);
+
+ isc_buffer_init(&b, data, bytes);
+ isc_buffer_add(&b, bytes);
+ ret = hmacsha1_fromdns(key, &b);
+ isc_safe_memwipe(data, sizeof(data));
+
+ return (ret);
+}
+
+static bool
+hmacsha1_isprivate(const dst_key_t *key) {
+ UNUSED(key);
+ return (true);
+}
+
+static void
+hmacsha1_destroy(dst_key_t *key) {
+ dst_hmacsha1_key_t *hkey = key->keydata.hmacsha1;
+
+ isc_safe_memwipe(hkey, sizeof(*hkey));
+ isc_mem_put(key->mctx, hkey, sizeof(*hkey));
+ key->keydata.hmacsha1 = NULL;
+}
+
+static isc_result_t
+hmacsha1_todns(const dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha1_key_t *hkey;
+ unsigned int bytes;
+
+ REQUIRE(key->keydata.hmacsha1 != NULL);
+
+ hkey = key->keydata.hmacsha1;
+
+ bytes = (key->key_size + 7) / 8;
+ if (isc_buffer_availablelength(data) < bytes)
+ return (ISC_R_NOSPACE);
+ isc_buffer_putmem(data, hkey->key, bytes);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha1_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha1_key_t *hkey;
+ int keylen;
+ isc_region_t r;
+ isc_sha1_t sha1ctx;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0)
+ return (ISC_R_SUCCESS);
+
+ hkey = isc_mem_get(key->mctx, sizeof(dst_hmacsha1_key_t));
+ if (hkey == NULL)
+ return (ISC_R_NOMEMORY);
+
+ memset(hkey->key, 0, sizeof(hkey->key));
+
+ if (r.length > ISC_SHA1_BLOCK_LENGTH) {
+ isc_sha1_init(&sha1ctx);
+ isc_sha1_update(&sha1ctx, r.base, r.length);
+ isc_sha1_final(&sha1ctx, hkey->key);
+ keylen = ISC_SHA1_DIGESTLENGTH;
+ } else {
+ memmove(hkey->key, r.base, r.length);
+ keylen = r.length;
+ }
+
+ key->key_size = keylen * 8;
+ key->keydata.hmacsha1 = hkey;
+
+ isc_buffer_forward(data, r.length);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha1_tofile(const dst_key_t *key, const char *directory) {
+ int cnt = 0;
+ dst_hmacsha1_key_t *hkey;
+ dst_private_t priv;
+ int bytes = (key->key_size + 7) / 8;
+ unsigned char buf[2];
+
+ if (key->keydata.hmacsha1 == NULL)
+ return (DST_R_NULLKEY);
+
+ if (key->external)
+ return (DST_R_EXTERNALKEY);
+
+ hkey = key->keydata.hmacsha1;
+
+ priv.elements[cnt].tag = TAG_HMACSHA1_KEY;
+ priv.elements[cnt].length = bytes;
+ priv.elements[cnt++].data = hkey->key;
+
+ buf[0] = (key->key_bits >> 8) & 0xffU;
+ buf[1] = key->key_bits & 0xffU;
+ priv.elements[cnt].tag = TAG_HMACSHA1_BITS;
+ priv.elements[cnt].data = buf;
+ priv.elements[cnt++].length = 2;
+
+ priv.nelements = cnt;
+ return (dst__privstruct_writefile(key, &priv, directory));
+}
+
+static isc_result_t
+hmacsha1_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t result, tresult;
+ isc_buffer_t b;
+ isc_mem_t *mctx = key->mctx;
+ unsigned int i;
+
+ UNUSED(pub);
+ /* read private key file */
+ result = dst__privstruct_parse(key, DST_ALG_HMACSHA1, lexer, mctx,
+ &priv);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ if (key->external)
+ result = DST_R_EXTERNALKEY;
+
+ key->key_bits = 0;
+ for (i = 0; i < priv.nelements && result == ISC_R_SUCCESS; i++) {
+ switch (priv.elements[i].tag) {
+ case TAG_HMACSHA1_KEY:
+ isc_buffer_init(&b, priv.elements[i].data,
+ priv.elements[i].length);
+ isc_buffer_add(&b, priv.elements[i].length);
+ tresult = hmacsha1_fromdns(key, &b);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ case TAG_HMACSHA1_BITS:
+ tresult = getkeybits(key, &priv.elements[i]);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ default:
+ result = DST_R_INVALIDPRIVATEKEY;
+ break;
+ }
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (result);
+}
+
+static dst_func_t hmacsha1_functions = {
+ hmacsha1_createctx,
+ NULL, /*%< createctx2 */
+ hmacsha1_destroyctx,
+ hmacsha1_adddata,
+ hmacsha1_sign,
+ hmacsha1_verify,
+ NULL, /* verify2 */
+ NULL, /* computesecret */
+ hmacsha1_compare,
+ NULL, /* paramcompare */
+ hmacsha1_generate,
+ hmacsha1_isprivate,
+ hmacsha1_destroy,
+ hmacsha1_todns,
+ hmacsha1_fromdns,
+ hmacsha1_tofile,
+ hmacsha1_parse,
+ NULL, /* cleanup */
+ NULL, /* fromlabel */
+ NULL, /* dump */
+ NULL, /* restore */
+};
+
+isc_result_t
+dst__hmacsha1_init(dst_func_t **funcp) {
+ /*
+ * Prevent use of incorrect crypto
+ */
+ RUNTIME_CHECK(isc_sha1_check(false));
+ RUNTIME_CHECK(isc_hmacsha1_check(0));
+
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL)
+ *funcp = &hmacsha1_functions;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t hmacsha224_fromdns(dst_key_t *key, isc_buffer_t *data);
+
+struct dst_hmacsha224_key {
+ unsigned char key[ISC_SHA224_BLOCK_LENGTH];
+};
+
+static isc_result_t
+hmacsha224_createctx(dst_key_t *key, dst_context_t *dctx) {
+ isc_hmacsha224_t *hmacsha224ctx;
+ dst_hmacsha224_key_t *hkey = key->keydata.hmacsha224;
+
+ hmacsha224ctx = isc_mem_get(dctx->mctx, sizeof(isc_hmacsha224_t));
+ if (hmacsha224ctx == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_hmacsha224_init(hmacsha224ctx, hkey->key, ISC_SHA224_BLOCK_LENGTH);
+ dctx->ctxdata.hmacsha224ctx = hmacsha224ctx;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+hmacsha224_destroyctx(dst_context_t *dctx) {
+ isc_hmacsha224_t *hmacsha224ctx = dctx->ctxdata.hmacsha224ctx;
+
+ if (hmacsha224ctx != NULL) {
+ isc_hmacsha224_invalidate(hmacsha224ctx);
+ isc_mem_put(dctx->mctx, hmacsha224ctx, sizeof(isc_hmacsha224_t));
+ dctx->ctxdata.hmacsha224ctx = NULL;
+ }
+}
+
+static isc_result_t
+hmacsha224_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ isc_hmacsha224_t *hmacsha224ctx = dctx->ctxdata.hmacsha224ctx;
+
+ isc_hmacsha224_update(hmacsha224ctx, data->base, data->length);
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha224_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ isc_hmacsha224_t *hmacsha224ctx = dctx->ctxdata.hmacsha224ctx;
+ unsigned char *digest;
+
+ if (isc_buffer_availablelength(sig) < ISC_SHA224_DIGESTLENGTH)
+ return (ISC_R_NOSPACE);
+ digest = isc_buffer_used(sig);
+ isc_hmacsha224_sign(hmacsha224ctx, digest, ISC_SHA224_DIGESTLENGTH);
+ isc_buffer_add(sig, ISC_SHA224_DIGESTLENGTH);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha224_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ isc_hmacsha224_t *hmacsha224ctx = dctx->ctxdata.hmacsha224ctx;
+
+ if (sig->length > ISC_SHA224_DIGESTLENGTH || sig->length == 0)
+ return (DST_R_VERIFYFAILURE);
+
+ if (isc_hmacsha224_verify(hmacsha224ctx, sig->base, sig->length))
+ return (ISC_R_SUCCESS);
+ else
+ return (DST_R_VERIFYFAILURE);
+}
+
+static bool
+hmacsha224_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ dst_hmacsha224_key_t *hkey1, *hkey2;
+
+ hkey1 = key1->keydata.hmacsha224;
+ hkey2 = key2->keydata.hmacsha224;
+
+ if (hkey1 == NULL && hkey2 == NULL)
+ return (true);
+ else if (hkey1 == NULL || hkey2 == NULL)
+ return (false);
+
+ if (isc_safe_memequal(hkey1->key, hkey2->key, ISC_SHA224_BLOCK_LENGTH))
+ return (true);
+ else
+ return (false);
+}
+
+static isc_result_t
+hmacsha224_generate(dst_key_t *key, int pseudorandom_ok,
+ void (*callback)(int))
+{
+ isc_buffer_t b;
+ isc_result_t ret;
+ unsigned int bytes;
+ unsigned char data[ISC_SHA224_BLOCK_LENGTH];
+
+ UNUSED(callback);
+
+ bytes = (key->key_size + 7) / 8;
+ if (bytes > ISC_SHA224_BLOCK_LENGTH) {
+ bytes = ISC_SHA224_BLOCK_LENGTH;
+ key->key_size = ISC_SHA224_BLOCK_LENGTH * 8;
+ }
+
+ memset(data, 0, ISC_SHA224_BLOCK_LENGTH);
+ ret = dst__entropy_getdata(data, bytes, pseudorandom_ok);
+
+ if (ret != ISC_R_SUCCESS)
+ return (ret);
+
+ isc_buffer_init(&b, data, bytes);
+ isc_buffer_add(&b, bytes);
+ ret = hmacsha224_fromdns(key, &b);
+ isc_safe_memwipe(data, sizeof(data));
+
+ return (ret);
+}
+
+static bool
+hmacsha224_isprivate(const dst_key_t *key) {
+ UNUSED(key);
+ return (true);
+}
+
+static void
+hmacsha224_destroy(dst_key_t *key) {
+ dst_hmacsha224_key_t *hkey = key->keydata.hmacsha224;
+
+ isc_safe_memwipe(hkey, sizeof(*hkey));
+ isc_mem_put(key->mctx, hkey, sizeof(*hkey));
+ key->keydata.hmacsha224 = NULL;
+}
+
+static isc_result_t
+hmacsha224_todns(const dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha224_key_t *hkey;
+ unsigned int bytes;
+
+ REQUIRE(key->keydata.hmacsha224 != NULL);
+
+ hkey = key->keydata.hmacsha224;
+
+ bytes = (key->key_size + 7) / 8;
+ if (isc_buffer_availablelength(data) < bytes)
+ return (ISC_R_NOSPACE);
+ isc_buffer_putmem(data, hkey->key, bytes);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha224_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha224_key_t *hkey;
+ int keylen;
+ isc_region_t r;
+ isc_sha224_t sha224ctx;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0)
+ return (ISC_R_SUCCESS);
+
+ hkey = isc_mem_get(key->mctx, sizeof(dst_hmacsha224_key_t));
+ if (hkey == NULL)
+ return (ISC_R_NOMEMORY);
+
+ memset(hkey->key, 0, sizeof(hkey->key));
+
+ if (r.length > ISC_SHA224_BLOCK_LENGTH) {
+ isc_sha224_init(&sha224ctx);
+ isc_sha224_update(&sha224ctx, r.base, r.length);
+ isc_sha224_final(hkey->key, &sha224ctx);
+ keylen = ISC_SHA224_DIGESTLENGTH;
+ } else {
+ memmove(hkey->key, r.base, r.length);
+ keylen = r.length;
+ }
+
+ key->key_size = keylen * 8;
+ key->keydata.hmacsha224 = hkey;
+
+ isc_buffer_forward(data, r.length);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha224_tofile(const dst_key_t *key, const char *directory) {
+ int cnt = 0;
+ dst_hmacsha224_key_t *hkey;
+ dst_private_t priv;
+ int bytes = (key->key_size + 7) / 8;
+ unsigned char buf[2];
+
+ if (key->keydata.hmacsha224 == NULL)
+ return (DST_R_NULLKEY);
+
+ if (key->external)
+ return (DST_R_EXTERNALKEY);
+
+ hkey = key->keydata.hmacsha224;
+
+ priv.elements[cnt].tag = TAG_HMACSHA224_KEY;
+ priv.elements[cnt].length = bytes;
+ priv.elements[cnt++].data = hkey->key;
+
+ buf[0] = (key->key_bits >> 8) & 0xffU;
+ buf[1] = key->key_bits & 0xffU;
+ priv.elements[cnt].tag = TAG_HMACSHA224_BITS;
+ priv.elements[cnt].data = buf;
+ priv.elements[cnt++].length = 2;
+
+ priv.nelements = cnt;
+ return (dst__privstruct_writefile(key, &priv, directory));
+}
+
+static isc_result_t
+hmacsha224_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t result, tresult;
+ isc_buffer_t b;
+ isc_mem_t *mctx = key->mctx;
+ unsigned int i;
+
+ UNUSED(pub);
+ /* read private key file */
+ result = dst__privstruct_parse(key, DST_ALG_HMACSHA224, lexer, mctx,
+ &priv);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ if (key->external)
+ result = DST_R_EXTERNALKEY;
+
+ key->key_bits = 0;
+ for (i = 0; i < priv.nelements && result == ISC_R_SUCCESS; i++) {
+ switch (priv.elements[i].tag) {
+ case TAG_HMACSHA224_KEY:
+ isc_buffer_init(&b, priv.elements[i].data,
+ priv.elements[i].length);
+ isc_buffer_add(&b, priv.elements[i].length);
+ tresult = hmacsha224_fromdns(key, &b);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ case TAG_HMACSHA224_BITS:
+ tresult = getkeybits(key, &priv.elements[i]);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ default:
+ result = DST_R_INVALIDPRIVATEKEY;
+ break;
+ }
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (result);
+}
+
+static dst_func_t hmacsha224_functions = {
+ hmacsha224_createctx,
+ NULL, /*%< createctx2 */
+ hmacsha224_destroyctx,
+ hmacsha224_adddata,
+ hmacsha224_sign,
+ hmacsha224_verify,
+ NULL, /* verify2 */
+ NULL, /* computesecret */
+ hmacsha224_compare,
+ NULL, /* paramcompare */
+ hmacsha224_generate,
+ hmacsha224_isprivate,
+ hmacsha224_destroy,
+ hmacsha224_todns,
+ hmacsha224_fromdns,
+ hmacsha224_tofile,
+ hmacsha224_parse,
+ NULL, /* cleanup */
+ NULL, /* fromlabel */
+ NULL, /* dump */
+ NULL, /* restore */
+};
+
+isc_result_t
+dst__hmacsha224_init(dst_func_t **funcp) {
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL)
+ *funcp = &hmacsha224_functions;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t hmacsha256_fromdns(dst_key_t *key, isc_buffer_t *data);
+
+struct dst_hmacsha256_key {
+ unsigned char key[ISC_SHA256_BLOCK_LENGTH];
+};
+
+static isc_result_t
+hmacsha256_createctx(dst_key_t *key, dst_context_t *dctx) {
+ isc_hmacsha256_t *hmacsha256ctx;
+ dst_hmacsha256_key_t *hkey = key->keydata.hmacsha256;
+
+ hmacsha256ctx = isc_mem_get(dctx->mctx, sizeof(isc_hmacsha256_t));
+ if (hmacsha256ctx == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_hmacsha256_init(hmacsha256ctx, hkey->key, ISC_SHA256_BLOCK_LENGTH);
+ dctx->ctxdata.hmacsha256ctx = hmacsha256ctx;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+hmacsha256_destroyctx(dst_context_t *dctx) {
+ isc_hmacsha256_t *hmacsha256ctx = dctx->ctxdata.hmacsha256ctx;
+
+ if (hmacsha256ctx != NULL) {
+ isc_hmacsha256_invalidate(hmacsha256ctx);
+ isc_mem_put(dctx->mctx, hmacsha256ctx, sizeof(isc_hmacsha256_t));
+ dctx->ctxdata.hmacsha256ctx = NULL;
+ }
+}
+
+static isc_result_t
+hmacsha256_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ isc_hmacsha256_t *hmacsha256ctx = dctx->ctxdata.hmacsha256ctx;
+
+ isc_hmacsha256_update(hmacsha256ctx, data->base, data->length);
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha256_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ isc_hmacsha256_t *hmacsha256ctx = dctx->ctxdata.hmacsha256ctx;
+ unsigned char *digest;
+
+ if (isc_buffer_availablelength(sig) < ISC_SHA256_DIGESTLENGTH)
+ return (ISC_R_NOSPACE);
+ digest = isc_buffer_used(sig);
+ isc_hmacsha256_sign(hmacsha256ctx, digest, ISC_SHA256_DIGESTLENGTH);
+ isc_buffer_add(sig, ISC_SHA256_DIGESTLENGTH);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha256_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ isc_hmacsha256_t *hmacsha256ctx = dctx->ctxdata.hmacsha256ctx;
+
+ if (sig->length > ISC_SHA256_DIGESTLENGTH || sig->length == 0)
+ return (DST_R_VERIFYFAILURE);
+
+ if (isc_hmacsha256_verify(hmacsha256ctx, sig->base, sig->length))
+ return (ISC_R_SUCCESS);
+ else
+ return (DST_R_VERIFYFAILURE);
+}
+
+static bool
+hmacsha256_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ dst_hmacsha256_key_t *hkey1, *hkey2;
+
+ hkey1 = key1->keydata.hmacsha256;
+ hkey2 = key2->keydata.hmacsha256;
+
+ if (hkey1 == NULL && hkey2 == NULL)
+ return (true);
+ else if (hkey1 == NULL || hkey2 == NULL)
+ return (false);
+
+ if (isc_safe_memequal(hkey1->key, hkey2->key, ISC_SHA256_BLOCK_LENGTH))
+ return (true);
+ else
+ return (false);
+}
+
+static isc_result_t
+hmacsha256_generate(dst_key_t *key, int pseudorandom_ok,
+ void (*callback)(int))
+{
+ isc_buffer_t b;
+ isc_result_t ret;
+ unsigned int bytes;
+ unsigned char data[ISC_SHA256_BLOCK_LENGTH];
+
+ UNUSED(callback);
+
+ bytes = (key->key_size + 7) / 8;
+ if (bytes > ISC_SHA256_BLOCK_LENGTH) {
+ bytes = ISC_SHA256_BLOCK_LENGTH;
+ key->key_size = ISC_SHA256_BLOCK_LENGTH * 8;
+ }
+
+ memset(data, 0, ISC_SHA256_BLOCK_LENGTH);
+ ret = dst__entropy_getdata(data, bytes, pseudorandom_ok);
+
+ if (ret != ISC_R_SUCCESS)
+ return (ret);
+
+ isc_buffer_init(&b, data, bytes);
+ isc_buffer_add(&b, bytes);
+ ret = hmacsha256_fromdns(key, &b);
+ isc_safe_memwipe(data, sizeof(data));
+
+ return (ret);
+}
+
+static bool
+hmacsha256_isprivate(const dst_key_t *key) {
+ UNUSED(key);
+ return (true);
+}
+
+static void
+hmacsha256_destroy(dst_key_t *key) {
+ dst_hmacsha256_key_t *hkey = key->keydata.hmacsha256;
+
+ isc_safe_memwipe(hkey, sizeof(*hkey));
+ isc_mem_put(key->mctx, hkey, sizeof(*hkey));
+ key->keydata.hmacsha256 = NULL;
+}
+
+static isc_result_t
+hmacsha256_todns(const dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha256_key_t *hkey;
+ unsigned int bytes;
+
+ REQUIRE(key->keydata.hmacsha256 != NULL);
+
+ hkey = key->keydata.hmacsha256;
+
+ bytes = (key->key_size + 7) / 8;
+ if (isc_buffer_availablelength(data) < bytes)
+ return (ISC_R_NOSPACE);
+ isc_buffer_putmem(data, hkey->key, bytes);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha256_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha256_key_t *hkey;
+ int keylen;
+ isc_region_t r;
+ isc_sha256_t sha256ctx;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0)
+ return (ISC_R_SUCCESS);
+
+ hkey = isc_mem_get(key->mctx, sizeof(dst_hmacsha256_key_t));
+ if (hkey == NULL)
+ return (ISC_R_NOMEMORY);
+
+ memset(hkey->key, 0, sizeof(hkey->key));
+
+ if (r.length > ISC_SHA256_BLOCK_LENGTH) {
+ isc_sha256_init(&sha256ctx);
+ isc_sha256_update(&sha256ctx, r.base, r.length);
+ isc_sha256_final(hkey->key, &sha256ctx);
+ keylen = ISC_SHA256_DIGESTLENGTH;
+ } else {
+ memmove(hkey->key, r.base, r.length);
+ keylen = r.length;
+ }
+
+ key->key_size = keylen * 8;
+ key->keydata.hmacsha256 = hkey;
+
+ isc_buffer_forward(data, r.length);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha256_tofile(const dst_key_t *key, const char *directory) {
+ int cnt = 0;
+ dst_hmacsha256_key_t *hkey;
+ dst_private_t priv;
+ int bytes = (key->key_size + 7) / 8;
+ unsigned char buf[2];
+
+ if (key->keydata.hmacsha256 == NULL)
+ return (DST_R_NULLKEY);
+
+ if (key->external)
+ return (DST_R_EXTERNALKEY);
+
+ hkey = key->keydata.hmacsha256;
+
+ priv.elements[cnt].tag = TAG_HMACSHA256_KEY;
+ priv.elements[cnt].length = bytes;
+ priv.elements[cnt++].data = hkey->key;
+
+ buf[0] = (key->key_bits >> 8) & 0xffU;
+ buf[1] = key->key_bits & 0xffU;
+ priv.elements[cnt].tag = TAG_HMACSHA256_BITS;
+ priv.elements[cnt].data = buf;
+ priv.elements[cnt++].length = 2;
+
+ priv.nelements = cnt;
+ return (dst__privstruct_writefile(key, &priv, directory));
+}
+
+static isc_result_t
+hmacsha256_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t result, tresult;
+ isc_buffer_t b;
+ isc_mem_t *mctx = key->mctx;
+ unsigned int i;
+
+ UNUSED(pub);
+ /* read private key file */
+ result = dst__privstruct_parse(key, DST_ALG_HMACSHA256, lexer, mctx,
+ &priv);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ if (key->external)
+ result = DST_R_EXTERNALKEY;
+
+ key->key_bits = 0;
+ for (i = 0; i < priv.nelements && result == ISC_R_SUCCESS; i++) {
+ switch (priv.elements[i].tag) {
+ case TAG_HMACSHA256_KEY:
+ isc_buffer_init(&b, priv.elements[i].data,
+ priv.elements[i].length);
+ isc_buffer_add(&b, priv.elements[i].length);
+ tresult = hmacsha256_fromdns(key, &b);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ case TAG_HMACSHA256_BITS:
+ tresult = getkeybits(key, &priv.elements[i]);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ default:
+ result = DST_R_INVALIDPRIVATEKEY;
+ break;
+ }
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (result);
+}
+
+static dst_func_t hmacsha256_functions = {
+ hmacsha256_createctx,
+ NULL, /*%< createctx2 */
+ hmacsha256_destroyctx,
+ hmacsha256_adddata,
+ hmacsha256_sign,
+ hmacsha256_verify,
+ NULL, /* verify2 */
+ NULL, /* computesecret */
+ hmacsha256_compare,
+ NULL, /* paramcompare */
+ hmacsha256_generate,
+ hmacsha256_isprivate,
+ hmacsha256_destroy,
+ hmacsha256_todns,
+ hmacsha256_fromdns,
+ hmacsha256_tofile,
+ hmacsha256_parse,
+ NULL, /* cleanup */
+ NULL, /* fromlabel */
+ NULL, /* dump */
+ NULL, /* restore */
+};
+
+isc_result_t
+dst__hmacsha256_init(dst_func_t **funcp) {
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL)
+ *funcp = &hmacsha256_functions;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t hmacsha384_fromdns(dst_key_t *key, isc_buffer_t *data);
+
+struct dst_hmacsha384_key {
+ unsigned char key[ISC_SHA384_BLOCK_LENGTH];
+};
+
+static isc_result_t
+hmacsha384_createctx(dst_key_t *key, dst_context_t *dctx) {
+ isc_hmacsha384_t *hmacsha384ctx;
+ dst_hmacsha384_key_t *hkey = key->keydata.hmacsha384;
+
+ hmacsha384ctx = isc_mem_get(dctx->mctx, sizeof(isc_hmacsha384_t));
+ if (hmacsha384ctx == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_hmacsha384_init(hmacsha384ctx, hkey->key, ISC_SHA384_BLOCK_LENGTH);
+ dctx->ctxdata.hmacsha384ctx = hmacsha384ctx;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+hmacsha384_destroyctx(dst_context_t *dctx) {
+ isc_hmacsha384_t *hmacsha384ctx = dctx->ctxdata.hmacsha384ctx;
+
+ if (hmacsha384ctx != NULL) {
+ isc_hmacsha384_invalidate(hmacsha384ctx);
+ isc_mem_put(dctx->mctx, hmacsha384ctx, sizeof(isc_hmacsha384_t));
+ dctx->ctxdata.hmacsha384ctx = NULL;
+ }
+}
+
+static isc_result_t
+hmacsha384_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ isc_hmacsha384_t *hmacsha384ctx = dctx->ctxdata.hmacsha384ctx;
+
+ isc_hmacsha384_update(hmacsha384ctx, data->base, data->length);
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha384_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ isc_hmacsha384_t *hmacsha384ctx = dctx->ctxdata.hmacsha384ctx;
+ unsigned char *digest;
+
+ if (isc_buffer_availablelength(sig) < ISC_SHA384_DIGESTLENGTH)
+ return (ISC_R_NOSPACE);
+ digest = isc_buffer_used(sig);
+ isc_hmacsha384_sign(hmacsha384ctx, digest, ISC_SHA384_DIGESTLENGTH);
+ isc_buffer_add(sig, ISC_SHA384_DIGESTLENGTH);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha384_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ isc_hmacsha384_t *hmacsha384ctx = dctx->ctxdata.hmacsha384ctx;
+
+ if (sig->length > ISC_SHA384_DIGESTLENGTH || sig->length == 0)
+ return (DST_R_VERIFYFAILURE);
+
+ if (isc_hmacsha384_verify(hmacsha384ctx, sig->base, sig->length))
+ return (ISC_R_SUCCESS);
+ else
+ return (DST_R_VERIFYFAILURE);
+}
+
+static bool
+hmacsha384_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ dst_hmacsha384_key_t *hkey1, *hkey2;
+
+ hkey1 = key1->keydata.hmacsha384;
+ hkey2 = key2->keydata.hmacsha384;
+
+ if (hkey1 == NULL && hkey2 == NULL)
+ return (true);
+ else if (hkey1 == NULL || hkey2 == NULL)
+ return (false);
+
+ if (isc_safe_memequal(hkey1->key, hkey2->key, ISC_SHA384_BLOCK_LENGTH))
+ return (true);
+ else
+ return (false);
+}
+
+static isc_result_t
+hmacsha384_generate(dst_key_t *key, int pseudorandom_ok,
+ void (*callback)(int))
+{
+ isc_buffer_t b;
+ isc_result_t ret;
+ unsigned int bytes;
+ unsigned char data[ISC_SHA384_BLOCK_LENGTH];
+
+ UNUSED(callback);
+
+ bytes = (key->key_size + 7) / 8;
+ if (bytes > ISC_SHA384_BLOCK_LENGTH) {
+ bytes = ISC_SHA384_BLOCK_LENGTH;
+ key->key_size = ISC_SHA384_BLOCK_LENGTH * 8;
+ }
+
+ memset(data, 0, ISC_SHA384_BLOCK_LENGTH);
+ ret = dst__entropy_getdata(data, bytes, pseudorandom_ok);
+
+ if (ret != ISC_R_SUCCESS)
+ return (ret);
+
+ isc_buffer_init(&b, data, bytes);
+ isc_buffer_add(&b, bytes);
+ ret = hmacsha384_fromdns(key, &b);
+ isc_safe_memwipe(data, sizeof(data));
+
+ return (ret);
+}
+
+static bool
+hmacsha384_isprivate(const dst_key_t *key) {
+ UNUSED(key);
+ return (true);
+}
+
+static void
+hmacsha384_destroy(dst_key_t *key) {
+ dst_hmacsha384_key_t *hkey = key->keydata.hmacsha384;
+
+ isc_safe_memwipe(hkey, sizeof(*hkey));
+ isc_mem_put(key->mctx, hkey, sizeof(*hkey));
+ key->keydata.hmacsha384 = NULL;
+}
+
+static isc_result_t
+hmacsha384_todns(const dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha384_key_t *hkey;
+ unsigned int bytes;
+
+ REQUIRE(key->keydata.hmacsha384 != NULL);
+
+ hkey = key->keydata.hmacsha384;
+
+ bytes = (key->key_size + 7) / 8;
+ if (isc_buffer_availablelength(data) < bytes)
+ return (ISC_R_NOSPACE);
+ isc_buffer_putmem(data, hkey->key, bytes);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha384_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha384_key_t *hkey;
+ int keylen;
+ isc_region_t r;
+ isc_sha384_t sha384ctx;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0)
+ return (ISC_R_SUCCESS);
+
+ hkey = isc_mem_get(key->mctx, sizeof(dst_hmacsha384_key_t));
+ if (hkey == NULL)
+ return (ISC_R_NOMEMORY);
+
+ memset(hkey->key, 0, sizeof(hkey->key));
+
+ if (r.length > ISC_SHA384_BLOCK_LENGTH) {
+ isc_sha384_init(&sha384ctx);
+ isc_sha384_update(&sha384ctx, r.base, r.length);
+ isc_sha384_final(hkey->key, &sha384ctx);
+ keylen = ISC_SHA384_DIGESTLENGTH;
+ } else {
+ memmove(hkey->key, r.base, r.length);
+ keylen = r.length;
+ }
+
+ key->key_size = keylen * 8;
+ key->keydata.hmacsha384 = hkey;
+
+ isc_buffer_forward(data, r.length);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha384_tofile(const dst_key_t *key, const char *directory) {
+ int cnt = 0;
+ dst_hmacsha384_key_t *hkey;
+ dst_private_t priv;
+ int bytes = (key->key_size + 7) / 8;
+ unsigned char buf[2];
+
+ if (key->keydata.hmacsha384 == NULL)
+ return (DST_R_NULLKEY);
+
+ if (key->external)
+ return (DST_R_EXTERNALKEY);
+
+ hkey = key->keydata.hmacsha384;
+
+ priv.elements[cnt].tag = TAG_HMACSHA384_KEY;
+ priv.elements[cnt].length = bytes;
+ priv.elements[cnt++].data = hkey->key;
+
+ buf[0] = (key->key_bits >> 8) & 0xffU;
+ buf[1] = key->key_bits & 0xffU;
+ priv.elements[cnt].tag = TAG_HMACSHA384_BITS;
+ priv.elements[cnt].data = buf;
+ priv.elements[cnt++].length = 2;
+
+ priv.nelements = cnt;
+ return (dst__privstruct_writefile(key, &priv, directory));
+}
+
+static isc_result_t
+hmacsha384_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t result, tresult;
+ isc_buffer_t b;
+ isc_mem_t *mctx = key->mctx;
+ unsigned int i;
+
+ UNUSED(pub);
+ /* read private key file */
+ result = dst__privstruct_parse(key, DST_ALG_HMACSHA384, lexer, mctx,
+ &priv);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ if (key->external)
+ result = DST_R_EXTERNALKEY;
+
+ key->key_bits = 0;
+ for (i = 0; i < priv.nelements && result == ISC_R_SUCCESS; i++) {
+ switch (priv.elements[i].tag) {
+ case TAG_HMACSHA384_KEY:
+ isc_buffer_init(&b, priv.elements[i].data,
+ priv.elements[i].length);
+ isc_buffer_add(&b, priv.elements[i].length);
+ tresult = hmacsha384_fromdns(key, &b);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ case TAG_HMACSHA384_BITS:
+ tresult = getkeybits(key, &priv.elements[i]);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ default:
+ result = DST_R_INVALIDPRIVATEKEY;
+ break;
+ }
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (result);
+}
+
+static dst_func_t hmacsha384_functions = {
+ hmacsha384_createctx,
+ NULL, /*%< createctx2 */
+ hmacsha384_destroyctx,
+ hmacsha384_adddata,
+ hmacsha384_sign,
+ hmacsha384_verify,
+ NULL, /* verify2 */
+ NULL, /* computesecret */
+ hmacsha384_compare,
+ NULL, /* paramcompare */
+ hmacsha384_generate,
+ hmacsha384_isprivate,
+ hmacsha384_destroy,
+ hmacsha384_todns,
+ hmacsha384_fromdns,
+ hmacsha384_tofile,
+ hmacsha384_parse,
+ NULL, /* cleanup */
+ NULL, /* fromlabel */
+ NULL, /* dump */
+ NULL, /* restore */
+};
+
+isc_result_t
+dst__hmacsha384_init(dst_func_t **funcp) {
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL)
+ *funcp = &hmacsha384_functions;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t hmacsha512_fromdns(dst_key_t *key, isc_buffer_t *data);
+
+struct dst_hmacsha512_key {
+ unsigned char key[ISC_SHA512_BLOCK_LENGTH];
+};
+
+static isc_result_t
+hmacsha512_createctx(dst_key_t *key, dst_context_t *dctx) {
+ isc_hmacsha512_t *hmacsha512ctx;
+ dst_hmacsha512_key_t *hkey = key->keydata.hmacsha512;
+
+ hmacsha512ctx = isc_mem_get(dctx->mctx, sizeof(isc_hmacsha512_t));
+ if (hmacsha512ctx == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_hmacsha512_init(hmacsha512ctx, hkey->key, ISC_SHA512_BLOCK_LENGTH);
+ dctx->ctxdata.hmacsha512ctx = hmacsha512ctx;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+hmacsha512_destroyctx(dst_context_t *dctx) {
+ isc_hmacsha512_t *hmacsha512ctx = dctx->ctxdata.hmacsha512ctx;
+
+ if (hmacsha512ctx != NULL) {
+ isc_hmacsha512_invalidate(hmacsha512ctx);
+ isc_mem_put(dctx->mctx, hmacsha512ctx, sizeof(isc_hmacsha512_t));
+ dctx->ctxdata.hmacsha512ctx = NULL;
+ }
+}
+
+static isc_result_t
+hmacsha512_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ isc_hmacsha512_t *hmacsha512ctx = dctx->ctxdata.hmacsha512ctx;
+
+ isc_hmacsha512_update(hmacsha512ctx, data->base, data->length);
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha512_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ isc_hmacsha512_t *hmacsha512ctx = dctx->ctxdata.hmacsha512ctx;
+ unsigned char *digest;
+
+ if (isc_buffer_availablelength(sig) < ISC_SHA512_DIGESTLENGTH)
+ return (ISC_R_NOSPACE);
+ digest = isc_buffer_used(sig);
+ isc_hmacsha512_sign(hmacsha512ctx, digest, ISC_SHA512_DIGESTLENGTH);
+ isc_buffer_add(sig, ISC_SHA512_DIGESTLENGTH);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha512_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ isc_hmacsha512_t *hmacsha512ctx = dctx->ctxdata.hmacsha512ctx;
+
+ if (sig->length > ISC_SHA512_DIGESTLENGTH || sig->length == 0)
+ return (DST_R_VERIFYFAILURE);
+
+ if (isc_hmacsha512_verify(hmacsha512ctx, sig->base, sig->length))
+ return (ISC_R_SUCCESS);
+ else
+ return (DST_R_VERIFYFAILURE);
+}
+
+static bool
+hmacsha512_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ dst_hmacsha512_key_t *hkey1, *hkey2;
+
+ hkey1 = key1->keydata.hmacsha512;
+ hkey2 = key2->keydata.hmacsha512;
+
+ if (hkey1 == NULL && hkey2 == NULL)
+ return (true);
+ else if (hkey1 == NULL || hkey2 == NULL)
+ return (false);
+
+ if (isc_safe_memequal(hkey1->key, hkey2->key, ISC_SHA512_BLOCK_LENGTH))
+ return (true);
+ else
+ return (false);
+}
+
+static isc_result_t
+hmacsha512_generate(dst_key_t *key, int pseudorandom_ok,
+ void (*callback)(int))
+{
+ isc_buffer_t b;
+ isc_result_t ret;
+ unsigned int bytes;
+ unsigned char data[ISC_SHA512_BLOCK_LENGTH];
+
+ UNUSED(callback);
+
+ bytes = (key->key_size + 7) / 8;
+ if (bytes > ISC_SHA512_BLOCK_LENGTH) {
+ bytes = ISC_SHA512_BLOCK_LENGTH;
+ key->key_size = ISC_SHA512_BLOCK_LENGTH * 8;
+ }
+
+ memset(data, 0, ISC_SHA512_BLOCK_LENGTH);
+ ret = dst__entropy_getdata(data, bytes, pseudorandom_ok);
+
+ if (ret != ISC_R_SUCCESS)
+ return (ret);
+
+ isc_buffer_init(&b, data, bytes);
+ isc_buffer_add(&b, bytes);
+ ret = hmacsha512_fromdns(key, &b);
+ isc_safe_memwipe(data, sizeof(data));
+
+ return (ret);
+}
+
+static bool
+hmacsha512_isprivate(const dst_key_t *key) {
+ UNUSED(key);
+ return (true);
+}
+
+static void
+hmacsha512_destroy(dst_key_t *key) {
+ dst_hmacsha512_key_t *hkey = key->keydata.hmacsha512;
+
+ isc_safe_memwipe(hkey, sizeof(*hkey));
+ isc_mem_put(key->mctx, hkey, sizeof(*hkey));
+ key->keydata.hmacsha512 = NULL;
+}
+
+static isc_result_t
+hmacsha512_todns(const dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha512_key_t *hkey;
+ unsigned int bytes;
+
+ REQUIRE(key->keydata.hmacsha512 != NULL);
+
+ hkey = key->keydata.hmacsha512;
+
+ bytes = (key->key_size + 7) / 8;
+ if (isc_buffer_availablelength(data) < bytes)
+ return (ISC_R_NOSPACE);
+ isc_buffer_putmem(data, hkey->key, bytes);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha512_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ dst_hmacsha512_key_t *hkey;
+ int keylen;
+ isc_region_t r;
+ isc_sha512_t sha512ctx;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0)
+ return (ISC_R_SUCCESS);
+
+ hkey = isc_mem_get(key->mctx, sizeof(dst_hmacsha512_key_t));
+ if (hkey == NULL)
+ return (ISC_R_NOMEMORY);
+
+ memset(hkey->key, 0, sizeof(hkey->key));
+
+ if (r.length > ISC_SHA512_BLOCK_LENGTH) {
+ isc_sha512_init(&sha512ctx);
+ isc_sha512_update(&sha512ctx, r.base, r.length);
+ isc_sha512_final(hkey->key, &sha512ctx);
+ keylen = ISC_SHA512_DIGESTLENGTH;
+ } else {
+ memmove(hkey->key, r.base, r.length);
+ keylen = r.length;
+ }
+
+ key->key_size = keylen * 8;
+ key->keydata.hmacsha512 = hkey;
+
+ isc_buffer_forward(data, r.length);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+hmacsha512_tofile(const dst_key_t *key, const char *directory) {
+ int cnt = 0;
+ dst_hmacsha512_key_t *hkey;
+ dst_private_t priv;
+ int bytes = (key->key_size + 7) / 8;
+ unsigned char buf[2];
+
+ if (key->keydata.hmacsha512 == NULL)
+ return (DST_R_NULLKEY);
+
+ if (key->external)
+ return (DST_R_EXTERNALKEY);
+
+ hkey = key->keydata.hmacsha512;
+
+ priv.elements[cnt].tag = TAG_HMACSHA512_KEY;
+ priv.elements[cnt].length = bytes;
+ priv.elements[cnt++].data = hkey->key;
+
+ buf[0] = (key->key_bits >> 8) & 0xffU;
+ buf[1] = key->key_bits & 0xffU;
+ priv.elements[cnt].tag = TAG_HMACSHA512_BITS;
+ priv.elements[cnt].data = buf;
+ priv.elements[cnt++].length = 2;
+
+ priv.nelements = cnt;
+ return (dst__privstruct_writefile(key, &priv, directory));
+}
+
+static isc_result_t
+hmacsha512_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t result, tresult;
+ isc_buffer_t b;
+ isc_mem_t *mctx = key->mctx;
+ unsigned int i;
+
+ UNUSED(pub);
+ /* read private key file */
+ result = dst__privstruct_parse(key, DST_ALG_HMACSHA512, lexer, mctx,
+ &priv);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ if (key->external)
+ result = DST_R_EXTERNALKEY;
+
+ key->key_bits = 0;
+ for (i = 0; i < priv.nelements && result == ISC_R_SUCCESS; i++) {
+ switch (priv.elements[i].tag) {
+ case TAG_HMACSHA512_KEY:
+ isc_buffer_init(&b, priv.elements[i].data,
+ priv.elements[i].length);
+ isc_buffer_add(&b, priv.elements[i].length);
+ tresult = hmacsha512_fromdns(key, &b);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ case TAG_HMACSHA512_BITS:
+ tresult = getkeybits(key, &priv.elements[i]);
+ if (tresult != ISC_R_SUCCESS)
+ result = tresult;
+ break;
+ default:
+ result = DST_R_INVALIDPRIVATEKEY;
+ break;
+ }
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (result);
+}
+
+static dst_func_t hmacsha512_functions = {
+ hmacsha512_createctx,
+ NULL, /*%< createctx2 */
+ hmacsha512_destroyctx,
+ hmacsha512_adddata,
+ hmacsha512_sign,
+ hmacsha512_verify,
+ NULL, /* verify2 */
+ NULL, /* computesecret */
+ hmacsha512_compare,
+ NULL, /* paramcompare */
+ hmacsha512_generate,
+ hmacsha512_isprivate,
+ hmacsha512_destroy,
+ hmacsha512_todns,
+ hmacsha512_fromdns,
+ hmacsha512_tofile,
+ hmacsha512_parse,
+ NULL, /* cleanup */
+ NULL, /* fromlabel */
+ NULL, /* dump */
+ NULL, /* restore */
+};
+
+isc_result_t
+dst__hmacsha512_init(dst_func_t **funcp) {
+ REQUIRE(funcp != NULL);
+ if (*funcp == NULL)
+ *funcp = &hmacsha512_functions;
+ return (ISC_R_SUCCESS);
+}
+
+/*! \file */