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-rw-r--r--lib/dns/opensslrsa_link.c1405
1 files changed, 1405 insertions, 0 deletions
diff --git a/lib/dns/opensslrsa_link.c b/lib/dns/opensslrsa_link.c
new file mode 100644
index 0000000..1f2a2e0
--- /dev/null
+++ b/lib/dns/opensslrsa_link.c
@@ -0,0 +1,1405 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * 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.
+ */
+
+#if !USE_PKCS11
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/objects.h>
+#include <openssl/rsa.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"
+#include "dst_openssl.h"
+#include "dst_parse.h"
+#if !defined(OPENSSL_NO_ENGINE)
+#include <openssl/engine.h>
+#endif /* if !defined(OPENSSL_NO_ENGINE) */
+
+/*
+ * Limit the size of public exponents.
+ */
+#ifndef RSA_MAX_PUBEXP_BITS
+#define RSA_MAX_PUBEXP_BITS 35
+#endif /* ifndef RSA_MAX_PUBEXP_BITS */
+
+/*
+ * We don't use configure for windows so enforce the OpenSSL version
+ * here. Unlike with configure we don't support overriding this test.
+ */
+#if defined(WIN32) && (OPENSSL_VERSION_NUMBER < 0x10000000L)
+#error Please upgrade OpenSSL to 1.0.0 or greater.
+#endif /* if defined(WIN32) && (OPENSSL_VERSION_NUMBER < 0x10000000L) */
+
+#define DST_RET(a) \
+ { \
+ ret = a; \
+ goto err; \
+ }
+
+#if !HAVE_RSA_SET0_KEY
+/* From OpenSSL 1.1.0 */
+static int
+RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) {
+ /*
+ * If the fields n and e in r are NULL, the corresponding input
+ * parameters MUST be non-NULL for n and e. d may be
+ * left NULL (in case only the public key is used).
+ */
+ if ((r->n == NULL && n == NULL) || (r->e == NULL && e == NULL)) {
+ return (0);
+ }
+
+ if (n != NULL) {
+ BN_free(r->n);
+ r->n = n;
+ }
+ if (e != NULL) {
+ BN_free(r->e);
+ r->e = e;
+ }
+ if (d != NULL) {
+ BN_free(r->d);
+ r->d = d;
+ }
+
+ return (1);
+}
+
+static int
+RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q) {
+ /*
+ * If the fields p and q in r are NULL, the corresponding input
+ * parameters MUST be non-NULL.
+ */
+ if ((r->p == NULL && p == NULL) || (r->q == NULL && q == NULL)) {
+ return (0);
+ }
+
+ if (p != NULL) {
+ BN_free(r->p);
+ r->p = p;
+ }
+ if (q != NULL) {
+ BN_free(r->q);
+ r->q = q;
+ }
+
+ return (1);
+}
+
+static int
+RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp) {
+ /*
+ * If the fields dmp1, dmq1 and iqmp in r are NULL, the
+ * corresponding input parameters MUST be non-NULL.
+ */
+ if ((r->dmp1 == NULL && dmp1 == NULL) ||
+ (r->dmq1 == NULL && dmq1 == NULL) ||
+ (r->iqmp == NULL && iqmp == NULL))
+ {
+ return (0);
+ }
+
+ if (dmp1 != NULL) {
+ BN_free(r->dmp1);
+ r->dmp1 = dmp1;
+ }
+ if (dmq1 != NULL) {
+ BN_free(r->dmq1);
+ r->dmq1 = dmq1;
+ }
+ if (iqmp != NULL) {
+ BN_free(r->iqmp);
+ r->iqmp = iqmp;
+ }
+
+ return (1);
+}
+
+static void
+RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e,
+ const BIGNUM **d) {
+ if (n != NULL) {
+ *n = r->n;
+ }
+ if (e != NULL) {
+ *e = r->e;
+ }
+ if (d != NULL) {
+ *d = r->d;
+ }
+}
+
+static void
+RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q) {
+ if (p != NULL) {
+ *p = r->p;
+ }
+ if (q != NULL) {
+ *q = r->q;
+ }
+}
+
+static void
+RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1,
+ const BIGNUM **iqmp) {
+ if (dmp1 != NULL) {
+ *dmp1 = r->dmp1;
+ }
+ if (dmq1 != NULL) {
+ *dmq1 = r->dmq1;
+ }
+ if (iqmp != NULL) {
+ *iqmp = r->iqmp;
+ }
+}
+
+static int
+RSA_test_flags(const RSA *r, int flags) {
+ return (r->flags & flags);
+}
+
+#endif /* !HAVE_RSA_SET0_KEY */
+
+static isc_result_t
+opensslrsa_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_RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_RSASHA256 ||
+ dctx->key->key_alg == DST_ALG_RSASHA512);
+
+ /*
+ * Reject incorrect RSA key lengths.
+ */
+ switch (dctx->key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ /* From RFC 3110 */
+ if (dctx->key->key_size > 4096) {
+ return (ISC_R_FAILURE);
+ }
+ break;
+ case DST_ALG_RSASHA256:
+ /* From RFC 5702 */
+ if ((dctx->key->key_size < 512) || (dctx->key->key_size > 4096))
+ {
+ return (ISC_R_FAILURE);
+ }
+ break;
+ case DST_ALG_RSASHA512:
+ /* From RFC 5702 */
+ if ((dctx->key->key_size < 1024) ||
+ (dctx->key->key_size > 4096))
+ {
+ return (ISC_R_FAILURE);
+ }
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ evp_md_ctx = EVP_MD_CTX_create();
+ if (evp_md_ctx == NULL) {
+ return (ISC_R_NOMEMORY);
+ }
+
+ switch (dctx->key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ type = EVP_sha1(); /* SHA1 + RSA */
+ break;
+ case DST_ALG_RSASHA256:
+ type = EVP_sha256(); /* SHA256 + RSA */
+ break;
+ case DST_ALG_RSASHA512:
+ type = EVP_sha512();
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ 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
+opensslrsa_destroyctx(dst_context_t *dctx) {
+ EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
+
+ REQUIRE(dctx->key->key_alg == DST_ALG_RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_RSASHA256 ||
+ dctx->key->key_alg == DST_ALG_RSASHA512);
+
+ if (evp_md_ctx != NULL) {
+ EVP_MD_CTX_destroy(evp_md_ctx);
+ dctx->ctxdata.evp_md_ctx = NULL;
+ }
+}
+
+static isc_result_t
+opensslrsa_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_RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_RSASHA256 ||
+ dctx->key->key_alg == DST_ALG_RSASHA512);
+
+ 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 isc_result_t
+opensslrsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ dst_key_t *key = dctx->key;
+ isc_region_t r;
+ unsigned int siglen = 0;
+ EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
+ EVP_PKEY *pkey = key->keydata.pkey;
+
+ REQUIRE(dctx->key->key_alg == DST_ALG_RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_RSASHA256 ||
+ dctx->key->key_alg == DST_ALG_RSASHA512);
+
+ isc_buffer_availableregion(sig, &r);
+
+ if (r.length < (unsigned int)EVP_PKEY_size(pkey)) {
+ return (ISC_R_NOSPACE);
+ }
+
+ if (!EVP_SignFinal(evp_md_ctx, r.base, &siglen, pkey)) {
+ return (dst__openssl_toresult3(dctx->category, "EVP_SignFinal",
+ ISC_R_FAILURE));
+ }
+
+ isc_buffer_add(sig, siglen);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+opensslrsa_verify2(dst_context_t *dctx, int maxbits, const isc_region_t *sig) {
+ dst_key_t *key = dctx->key;
+ int status = 0;
+ const BIGNUM *e = NULL;
+ EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
+ EVP_PKEY *pkey = key->keydata.pkey;
+ RSA *rsa;
+ int bits;
+
+ REQUIRE(dctx->key->key_alg == DST_ALG_RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ dctx->key->key_alg == DST_ALG_RSASHA256 ||
+ dctx->key->key_alg == DST_ALG_RSASHA512);
+
+ rsa = EVP_PKEY_get1_RSA(pkey);
+ if (rsa == NULL) {
+ return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ RSA_get0_key(rsa, NULL, &e, NULL);
+ if (e == NULL) {
+ RSA_free(rsa);
+ return (dst__openssl_toresult(DST_R_VERIFYFAILURE));
+ }
+ bits = BN_num_bits(e);
+ RSA_free(rsa);
+ if (bits > maxbits && maxbits != 0) {
+ return (DST_R_VERIFYFAILURE);
+ }
+
+ status = EVP_VerifyFinal(evp_md_ctx, sig->base, sig->length, pkey);
+ switch (status) {
+ case 1:
+ return (ISC_R_SUCCESS);
+ case 0:
+ return (dst__openssl_toresult(DST_R_VERIFYFAILURE));
+ default:
+ return (dst__openssl_toresult3(dctx->category,
+ "EVP_VerifyFinal",
+ DST_R_VERIFYFAILURE));
+ }
+}
+
+static isc_result_t
+opensslrsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ return (opensslrsa_verify2(dctx, 0, sig));
+}
+
+static bool
+opensslrsa_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ int status;
+ RSA *rsa1 = NULL, *rsa2 = NULL;
+ const BIGNUM *n1 = NULL, *n2 = NULL;
+ const BIGNUM *e1 = NULL, *e2 = NULL;
+ const BIGNUM *d1 = NULL, *d2 = NULL;
+ const BIGNUM *p1 = NULL, *p2 = NULL;
+ const BIGNUM *q1 = NULL, *q2 = NULL;
+ EVP_PKEY *pkey1, *pkey2;
+
+ pkey1 = key1->keydata.pkey;
+ pkey2 = key2->keydata.pkey;
+ /*
+ * The pkey reference will keep these around after
+ * the RSA_free() call.
+ */
+ if (pkey1 != NULL) {
+ rsa1 = EVP_PKEY_get1_RSA(pkey1);
+ RSA_free(rsa1);
+ }
+ if (pkey2 != NULL) {
+ rsa2 = EVP_PKEY_get1_RSA(pkey2);
+ RSA_free(rsa2);
+ }
+
+ if (rsa1 == NULL && rsa2 == NULL) {
+ return (true);
+ } else if (rsa1 == NULL || rsa2 == NULL) {
+ return (false);
+ }
+
+ RSA_get0_key(rsa1, &n1, &e1, &d1);
+ RSA_get0_key(rsa2, &n2, &e2, &d2);
+ status = BN_cmp(n1, n2) || BN_cmp(e1, e2);
+
+ if (status != 0) {
+ return (false);
+ }
+
+ if (RSA_test_flags(rsa1, RSA_FLAG_EXT_PKEY) != 0 ||
+ RSA_test_flags(rsa2, RSA_FLAG_EXT_PKEY) != 0)
+ {
+ if (RSA_test_flags(rsa1, RSA_FLAG_EXT_PKEY) == 0 ||
+ RSA_test_flags(rsa2, RSA_FLAG_EXT_PKEY) == 0)
+ {
+ return (false);
+ }
+ /*
+ * Can't compare private parameters, BTW does it make sense?
+ */
+ return (true);
+ }
+
+ if (d1 != NULL || d2 != NULL) {
+ if (d1 == NULL || d2 == NULL) {
+ return (false);
+ }
+ RSA_get0_factors(rsa1, &p1, &q1);
+ RSA_get0_factors(rsa2, &p2, &q2);
+ status = BN_cmp(d1, d2) || BN_cmp(p1, p2) || BN_cmp(q1, q2);
+
+ if (status != 0) {
+ return (false);
+ }
+ }
+ return (true);
+}
+
+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);
+}
+
+static isc_result_t
+opensslrsa_generate(dst_key_t *key, int exp, void (*callback)(int)) {
+ isc_result_t ret = DST_R_OPENSSLFAILURE;
+ union {
+ void *dptr;
+ void (*fptr)(int);
+ } u;
+ RSA *rsa = RSA_new();
+ BIGNUM *e = BN_new();
+#if !HAVE_BN_GENCB_NEW
+ BN_GENCB _cb;
+#endif /* !HAVE_BN_GENCB_NEW */
+ BN_GENCB *cb = BN_GENCB_new();
+ EVP_PKEY *pkey = EVP_PKEY_new();
+
+ /*
+ * Reject incorrect RSA key lengths.
+ */
+ switch (key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ /* From RFC 3110 */
+ if (key->key_size > 4096) {
+ goto err;
+ }
+ break;
+ case DST_ALG_RSASHA256:
+ /* From RFC 5702 */
+ if ((key->key_size < 512) || (key->key_size > 4096)) {
+ goto err;
+ }
+ break;
+ case DST_ALG_RSASHA512:
+ /* From RFC 5702 */
+ if ((key->key_size < 1024) || (key->key_size > 4096)) {
+ goto err;
+ }
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ if (rsa == NULL || e == NULL || cb == NULL) {
+ goto err;
+ }
+ if (pkey == NULL) {
+ goto err;
+ }
+ if (!EVP_PKEY_set1_RSA(pkey, rsa)) {
+ goto err;
+ }
+
+ if (exp == 0) {
+ /* RSA_F4 0x10001 */
+ BN_set_bit(e, 0);
+ BN_set_bit(e, 16);
+ } else {
+ /* (phased-out) F5 0x100000001 */
+ BN_set_bit(e, 0);
+ BN_set_bit(e, 32);
+ }
+
+ if (callback == NULL) {
+ BN_GENCB_set_old(cb, NULL, NULL);
+ } else {
+ u.fptr = callback;
+ BN_GENCB_set(cb, progress_cb, u.dptr);
+ }
+
+ if (RSA_generate_key_ex(rsa, key->key_size, e, cb)) {
+ BN_free(e);
+ BN_GENCB_free(cb);
+ cb = NULL;
+ key->keydata.pkey = pkey;
+
+ RSA_free(rsa);
+ return (ISC_R_SUCCESS);
+ }
+ ret = dst__openssl_toresult2("RSA_generate_key_ex",
+ DST_R_OPENSSLFAILURE);
+
+err:
+ if (pkey != NULL) {
+ EVP_PKEY_free(pkey);
+ pkey = NULL;
+ }
+ if (e != NULL) {
+ BN_free(e);
+ e = NULL;
+ }
+ if (rsa != NULL) {
+ RSA_free(rsa);
+ rsa = NULL;
+ }
+ if (cb != NULL) {
+ BN_GENCB_free(cb);
+ cb = NULL;
+ }
+ return (dst__openssl_toresult(ret));
+}
+
+static bool
+opensslrsa_isprivate(const dst_key_t *key) {
+ const BIGNUM *d = NULL;
+ RSA *rsa = EVP_PKEY_get1_RSA(key->keydata.pkey);
+ INSIST(rsa != NULL);
+ RSA_free(rsa);
+ /* key->keydata.pkey still has a reference so rsa is still valid. */
+ if (rsa != NULL && RSA_test_flags(rsa, RSA_FLAG_EXT_PKEY) != 0) {
+ return (true);
+ }
+ RSA_get0_key(rsa, NULL, NULL, &d);
+ return (rsa != NULL && d != NULL);
+}
+
+static void
+opensslrsa_destroy(dst_key_t *key) {
+ EVP_PKEY *pkey = key->keydata.pkey;
+ EVP_PKEY_free(pkey);
+ key->keydata.pkey = NULL;
+}
+
+static isc_result_t
+opensslrsa_todns(const dst_key_t *key, isc_buffer_t *data) {
+ isc_region_t r;
+ unsigned int e_bytes;
+ unsigned int mod_bytes;
+ isc_result_t ret;
+ RSA *rsa;
+ EVP_PKEY *pkey;
+ const BIGNUM *e = NULL, *n = NULL;
+
+ REQUIRE(key->keydata.pkey != NULL);
+
+ pkey = key->keydata.pkey;
+ rsa = EVP_PKEY_get1_RSA(pkey);
+ if (rsa == NULL) {
+ return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ RSA_get0_key(rsa, &n, &e, NULL);
+ if (e == NULL || n == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ mod_bytes = BN_num_bytes(n);
+ e_bytes = BN_num_bytes(e);
+
+ isc_buffer_availableregion(data, &r);
+
+ if (e_bytes < 256) { /*%< key exponent is <= 2040 bits */
+ if (r.length < 1) {
+ DST_RET(ISC_R_NOSPACE);
+ }
+ isc_buffer_putuint8(data, (uint8_t)e_bytes);
+ isc_region_consume(&r, 1);
+ } else {
+ if (r.length < 3) {
+ DST_RET(ISC_R_NOSPACE);
+ }
+ isc_buffer_putuint8(data, 0);
+ isc_buffer_putuint16(data, (uint16_t)e_bytes);
+ isc_region_consume(&r, 3);
+ }
+
+ if (r.length < e_bytes + mod_bytes) {
+ DST_RET(ISC_R_NOSPACE);
+ }
+
+ RSA_get0_key(rsa, &n, &e, NULL);
+ BN_bn2bin(e, r.base);
+ isc_region_consume(&r, e_bytes);
+ BN_bn2bin(n, r.base);
+
+ isc_buffer_add(data, e_bytes + mod_bytes);
+
+ ret = ISC_R_SUCCESS;
+err:
+ RSA_free(rsa);
+ return (ret);
+}
+
+static isc_result_t
+opensslrsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ RSA *rsa;
+ isc_region_t r;
+ unsigned int e_bytes;
+ unsigned int length;
+ EVP_PKEY *pkey;
+ BIGNUM *e = NULL, *n = NULL;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0) {
+ return (ISC_R_SUCCESS);
+ }
+ length = r.length;
+
+ rsa = RSA_new();
+ if (rsa == NULL) {
+ return (dst__openssl_toresult(ISC_R_NOMEMORY));
+ }
+
+ if (r.length < 1) {
+ RSA_free(rsa);
+ return (DST_R_INVALIDPUBLICKEY);
+ }
+ e_bytes = *r.base;
+ isc_region_consume(&r, 1);
+
+ if (e_bytes == 0) {
+ if (r.length < 2) {
+ RSA_free(rsa);
+ return (DST_R_INVALIDPUBLICKEY);
+ }
+ e_bytes = (*r.base) << 8;
+ isc_region_consume(&r, 1);
+ e_bytes += *r.base;
+ isc_region_consume(&r, 1);
+ }
+
+ if (r.length < e_bytes) {
+ RSA_free(rsa);
+ return (DST_R_INVALIDPUBLICKEY);
+ }
+ e = BN_bin2bn(r.base, e_bytes, NULL);
+ isc_region_consume(&r, e_bytes);
+ n = BN_bin2bn(r.base, r.length, NULL);
+ if (e == NULL || n == NULL) {
+ RSA_free(rsa);
+ return (ISC_R_NOMEMORY);
+ }
+
+ if (RSA_set0_key(rsa, n, e, NULL) == 0) {
+ if (n != NULL) {
+ BN_free(n);
+ }
+ if (e != NULL) {
+ BN_free(e);
+ }
+ RSA_free(rsa);
+ return (ISC_R_NOMEMORY);
+ }
+ key->key_size = BN_num_bits(n);
+
+ isc_buffer_forward(data, length);
+
+ pkey = EVP_PKEY_new();
+ if (pkey == NULL) {
+ RSA_free(rsa);
+ return (ISC_R_NOMEMORY);
+ }
+ if (!EVP_PKEY_set1_RSA(pkey, rsa)) {
+ EVP_PKEY_free(pkey);
+ RSA_free(rsa);
+ return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ key->keydata.pkey = pkey;
+ RSA_free(rsa);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+opensslrsa_tofile(const dst_key_t *key, const char *directory) {
+ int i;
+ RSA *rsa;
+ dst_private_t priv;
+ unsigned char *bufs[8];
+ isc_result_t result;
+ const BIGNUM *n = NULL, *e = NULL, *d = NULL;
+ const BIGNUM *p = NULL, *q = NULL;
+ const BIGNUM *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL;
+
+ if (key->external) {
+ priv.nelements = 0;
+ return (dst__privstruct_writefile(key, &priv, directory));
+ }
+
+ if (key->keydata.pkey == NULL) {
+ return (DST_R_NULLKEY);
+ }
+ rsa = EVP_PKEY_get1_RSA(key->keydata.pkey);
+ if (rsa == NULL) {
+ return (dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ memset(bufs, 0, sizeof(bufs));
+
+ RSA_get0_key(rsa, &n, &e, &d);
+ RSA_get0_factors(rsa, &p, &q);
+ RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
+
+ for (i = 0; i < 8; i++) {
+ bufs[i] = isc_mem_get(key->mctx, BN_num_bytes(n));
+ }
+
+ i = 0;
+
+ priv.elements[i].tag = TAG_RSA_MODULUS;
+ priv.elements[i].length = BN_num_bytes(n);
+ BN_bn2bin(n, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ priv.elements[i].tag = TAG_RSA_PUBLICEXPONENT;
+ priv.elements[i].length = BN_num_bytes(e);
+ BN_bn2bin(e, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ if (d != NULL) {
+ priv.elements[i].tag = TAG_RSA_PRIVATEEXPONENT;
+ priv.elements[i].length = BN_num_bytes(d);
+ BN_bn2bin(d, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (p != NULL) {
+ priv.elements[i].tag = TAG_RSA_PRIME1;
+ priv.elements[i].length = BN_num_bytes(p);
+ BN_bn2bin(p, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (q != NULL) {
+ priv.elements[i].tag = TAG_RSA_PRIME2;
+ priv.elements[i].length = BN_num_bytes(q);
+ BN_bn2bin(q, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (dmp1 != NULL) {
+ priv.elements[i].tag = TAG_RSA_EXPONENT1;
+ priv.elements[i].length = BN_num_bytes(dmp1);
+ BN_bn2bin(dmp1, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (dmq1 != NULL) {
+ priv.elements[i].tag = TAG_RSA_EXPONENT2;
+ priv.elements[i].length = BN_num_bytes(dmq1);
+ BN_bn2bin(dmq1, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (iqmp != NULL) {
+ priv.elements[i].tag = TAG_RSA_COEFFICIENT;
+ priv.elements[i].length = BN_num_bytes(iqmp);
+ BN_bn2bin(iqmp, bufs[i]);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (key->engine != NULL) {
+ priv.elements[i].tag = TAG_RSA_ENGINE;
+ priv.elements[i].length = (unsigned short)strlen(key->engine) +
+ 1;
+ priv.elements[i].data = (unsigned char *)key->engine;
+ i++;
+ }
+
+ if (key->label != NULL) {
+ priv.elements[i].tag = TAG_RSA_LABEL;
+ priv.elements[i].length = (unsigned short)strlen(key->label) +
+ 1;
+ priv.elements[i].data = (unsigned char *)key->label;
+ i++;
+ }
+
+ priv.nelements = i;
+ result = dst__privstruct_writefile(key, &priv, directory);
+
+ RSA_free(rsa);
+ for (i = 0; i < 8; i++) {
+ if (bufs[i] == NULL) {
+ break;
+ }
+ isc_mem_put(key->mctx, bufs[i], BN_num_bytes(n));
+ }
+ return (result);
+}
+
+static isc_result_t
+rsa_check(RSA *rsa, RSA *pub) {
+ const BIGNUM *n1 = NULL, *n2 = NULL;
+ const BIGNUM *e1 = NULL, *e2 = NULL;
+ BIGNUM *n = NULL, *e = NULL;
+
+ /*
+ * Public parameters should be the same but if they are not set
+ * copy them from the public key.
+ */
+ RSA_get0_key(rsa, &n1, &e1, NULL);
+ if (pub != NULL) {
+ RSA_get0_key(pub, &n2, &e2, NULL);
+ if (n1 != NULL) {
+ if (BN_cmp(n1, n2) != 0) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+ } else {
+ n = BN_dup(n2);
+ if (n == NULL) {
+ return (ISC_R_NOMEMORY);
+ }
+ }
+ if (e1 != NULL) {
+ if (BN_cmp(e1, e2) != 0) {
+ if (n != NULL) {
+ BN_free(n);
+ }
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+ } else {
+ e = BN_dup(e2);
+ if (e == NULL) {
+ if (n != NULL) {
+ BN_free(n);
+ }
+ return (ISC_R_NOMEMORY);
+ }
+ }
+ if (RSA_set0_key(rsa, n, e, NULL) == 0) {
+ if (n != NULL) {
+ BN_free(n);
+ }
+ if (e != NULL) {
+ BN_free(e);
+ }
+ }
+ }
+ RSA_get0_key(rsa, &n1, &e1, NULL);
+ if (n1 == NULL || e1 == NULL) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+opensslrsa_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t ret;
+ int i;
+ RSA *rsa = NULL, *pubrsa = NULL;
+#if !defined(OPENSSL_NO_ENGINE)
+ ENGINE *ep = NULL;
+ const BIGNUM *ex = NULL;
+#endif /* if !defined(OPENSSL_NO_ENGINE) */
+ isc_mem_t *mctx = key->mctx;
+ const char *engine = NULL, *label = NULL;
+ EVP_PKEY *pkey = NULL;
+ BIGNUM *n = NULL, *e = NULL, *d = NULL;
+ BIGNUM *p = NULL, *q = NULL;
+ BIGNUM *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL;
+
+ /* read private key file */
+ ret = dst__privstruct_parse(key, DST_ALG_RSA, 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;
+ key->key_size = pub->key_size;
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (ISC_R_SUCCESS);
+ }
+
+ if (pub != NULL && pub->keydata.pkey != NULL) {
+ pubrsa = EVP_PKEY_get1_RSA(pub->keydata.pkey);
+ }
+
+ for (i = 0; i < priv.nelements; i++) {
+ switch (priv.elements[i].tag) {
+ case TAG_RSA_ENGINE:
+ engine = (char *)priv.elements[i].data;
+ break;
+ case TAG_RSA_LABEL:
+ label = (char *)priv.elements[i].data;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /*
+ * Is this key is stored in a HSM?
+ * See if we can fetch it.
+ */
+ if (label != NULL) {
+#if !defined(OPENSSL_NO_ENGINE)
+ if (engine == NULL) {
+ DST_RET(DST_R_NOENGINE);
+ }
+ ep = dst__openssl_getengine(engine);
+ if (ep == NULL) {
+ DST_RET(DST_R_NOENGINE);
+ }
+ pkey = ENGINE_load_private_key(ep, label, NULL, NULL);
+ if (pkey == NULL) {
+ DST_RET(dst__openssl_toresult2("ENGINE_load_private_"
+ "key",
+ ISC_R_NOTFOUND));
+ }
+ key->engine = isc_mem_strdup(key->mctx, engine);
+ key->label = isc_mem_strdup(key->mctx, label);
+ rsa = EVP_PKEY_get1_RSA(pkey);
+ if (rsa == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ if (rsa_check(rsa, pubrsa) != ISC_R_SUCCESS) {
+ DST_RET(DST_R_INVALIDPRIVATEKEY);
+ }
+ RSA_get0_key(rsa, NULL, &ex, NULL);
+ if (BN_num_bits(ex) > RSA_MAX_PUBEXP_BITS) {
+ DST_RET(ISC_R_RANGE);
+ }
+ if (pubrsa != NULL) {
+ RSA_free(pubrsa);
+ }
+ key->key_size = EVP_PKEY_bits(pkey);
+ key->keydata.pkey = pkey;
+ RSA_free(rsa);
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (ISC_R_SUCCESS);
+#else /* if !defined(OPENSSL_NO_ENGINE) */
+ DST_RET(DST_R_NOENGINE);
+#endif /* if !defined(OPENSSL_NO_ENGINE) */
+ }
+
+ rsa = RSA_new();
+ if (rsa == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+
+ pkey = EVP_PKEY_new();
+ if (pkey == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+ if (!EVP_PKEY_set1_RSA(pkey, rsa)) {
+ DST_RET(ISC_R_FAILURE);
+ }
+ key->keydata.pkey = pkey;
+
+ for (i = 0; i < priv.nelements; i++) {
+ BIGNUM *bn;
+ switch (priv.elements[i].tag) {
+ case TAG_RSA_ENGINE:
+ continue;
+ case TAG_RSA_LABEL:
+ continue;
+ default:
+ 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_RSA_MODULUS:
+ n = bn;
+ break;
+ case TAG_RSA_PUBLICEXPONENT:
+ e = bn;
+ break;
+ case TAG_RSA_PRIVATEEXPONENT:
+ d = bn;
+ break;
+ case TAG_RSA_PRIME1:
+ p = bn;
+ break;
+ case TAG_RSA_PRIME2:
+ q = bn;
+ break;
+ case TAG_RSA_EXPONENT1:
+ dmp1 = bn;
+ break;
+ case TAG_RSA_EXPONENT2:
+ dmq1 = bn;
+ break;
+ case TAG_RSA_COEFFICIENT:
+ iqmp = bn;
+ break;
+ }
+ }
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+
+ if (RSA_set0_key(rsa, n, e, d) == 0) {
+ if (n != NULL) {
+ BN_free(n);
+ }
+ if (e != NULL) {
+ BN_free(e);
+ }
+ if (d != NULL) {
+ BN_free(d);
+ }
+ }
+ if (RSA_set0_factors(rsa, p, q) == 0) {
+ if (p != NULL) {
+ BN_free(p);
+ }
+ if (q != NULL) {
+ BN_free(q);
+ }
+ }
+ if (RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp) == 0) {
+ if (dmp1 != NULL) {
+ BN_free(dmp1);
+ }
+ if (dmq1 != NULL) {
+ BN_free(dmq1);
+ }
+ if (iqmp != NULL) {
+ BN_free(iqmp);
+ }
+ }
+
+ if (rsa_check(rsa, pubrsa) != ISC_R_SUCCESS) {
+ DST_RET(DST_R_INVALIDPRIVATEKEY);
+ }
+ if (BN_num_bits(e) > RSA_MAX_PUBEXP_BITS) {
+ DST_RET(ISC_R_RANGE);
+ }
+ key->key_size = BN_num_bits(n);
+ if (pubrsa != NULL) {
+ RSA_free(pubrsa);
+ }
+ RSA_free(rsa);
+
+ return (ISC_R_SUCCESS);
+
+err:
+ if (pkey != NULL) {
+ EVP_PKEY_free(pkey);
+ }
+ if (rsa != NULL) {
+ RSA_free(rsa);
+ }
+ if (pubrsa != NULL) {
+ RSA_free(pubrsa);
+ }
+ key->keydata.generic = NULL;
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (ret);
+}
+
+static isc_result_t
+opensslrsa_fromlabel(dst_key_t *key, const char *engine, const char *label,
+ const char *pin) {
+#if !defined(OPENSSL_NO_ENGINE)
+ ENGINE *e = NULL;
+ isc_result_t ret;
+ EVP_PKEY *pkey = NULL;
+ RSA *rsa = NULL, *pubrsa = NULL;
+ const BIGNUM *ex = NULL;
+
+ UNUSED(pin);
+
+ if (engine == NULL) {
+ DST_RET(DST_R_NOENGINE);
+ }
+ e = dst__openssl_getengine(engine);
+ if (e == NULL) {
+ DST_RET(DST_R_NOENGINE);
+ }
+ pkey = ENGINE_load_public_key(e, label, NULL, NULL);
+ if (pkey != NULL) {
+ pubrsa = EVP_PKEY_get1_RSA(pkey);
+ EVP_PKEY_free(pkey);
+ if (pubrsa == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ }
+ pkey = ENGINE_load_private_key(e, label, NULL, NULL);
+ if (pkey == NULL) {
+ DST_RET(dst__openssl_toresult2("ENGINE_load_private_key",
+ ISC_R_NOTFOUND));
+ }
+ key->engine = isc_mem_strdup(key->mctx, engine);
+ key->label = isc_mem_strdup(key->mctx, label);
+ rsa = EVP_PKEY_get1_RSA(pkey);
+ if (rsa == NULL) {
+ DST_RET(dst__openssl_toresult(DST_R_OPENSSLFAILURE));
+ }
+ if (rsa_check(rsa, pubrsa) != ISC_R_SUCCESS) {
+ DST_RET(DST_R_INVALIDPRIVATEKEY);
+ }
+ RSA_get0_key(rsa, NULL, &ex, NULL);
+ if (BN_num_bits(ex) > RSA_MAX_PUBEXP_BITS) {
+ DST_RET(ISC_R_RANGE);
+ }
+ if (pubrsa != NULL) {
+ RSA_free(pubrsa);
+ }
+ key->key_size = EVP_PKEY_bits(pkey);
+ key->keydata.pkey = pkey;
+ RSA_free(rsa);
+ return (ISC_R_SUCCESS);
+
+err:
+ if (rsa != NULL) {
+ RSA_free(rsa);
+ }
+ if (pubrsa != NULL) {
+ RSA_free(pubrsa);
+ }
+ if (pkey != NULL) {
+ EVP_PKEY_free(pkey);
+ }
+ return (ret);
+#else /* if !defined(OPENSSL_NO_ENGINE) */
+ UNUSED(key);
+ UNUSED(engine);
+ UNUSED(label);
+ UNUSED(pin);
+ return (DST_R_NOENGINE);
+#endif /* if !defined(OPENSSL_NO_ENGINE) */
+}
+
+static dst_func_t opensslrsa_functions = {
+ opensslrsa_createctx,
+ NULL, /*%< createctx2 */
+ opensslrsa_destroyctx,
+ opensslrsa_adddata,
+ opensslrsa_sign,
+ opensslrsa_verify,
+ opensslrsa_verify2,
+ NULL, /*%< computesecret */
+ opensslrsa_compare,
+ NULL, /*%< paramcompare */
+ opensslrsa_generate,
+ opensslrsa_isprivate,
+ opensslrsa_destroy,
+ opensslrsa_todns,
+ opensslrsa_fromdns,
+ opensslrsa_tofile,
+ opensslrsa_parse,
+ NULL, /*%< cleanup */
+ opensslrsa_fromlabel,
+ NULL, /*%< dump */
+ NULL, /*%< restore */
+};
+
+/*
+ * An RSA public key with 2048 bits
+ */
+static const unsigned char e_bytes[] = "\x01\x00\x01";
+static const unsigned char n_bytes[] =
+ "\xc3\x90\x07\xbe\xf1\x85\xfc\x1a\x43\xb1\xa5\x15\xce\x71\x34\xfc\xc1"
+ "\x87\x27\x28\x38\xa4\xcf\x7c\x1a\x82\xa8\xdc\x04\x14\xd0\x3f\xb4\xfe"
+ "\x20\x4a\xdd\xd9\x0d\xd7\xcd\x61\x8c\xbd\x61\xa8\x10\xb5\x63\x1c\x29"
+ "\x15\xcb\x41\xee\x43\x91\x7f\xeb\xa5\x2c\xab\x81\x75\x0d\xa3\x3d\xe4"
+ "\xc8\x49\xb9\xca\x5a\x55\xa1\xbb\x09\xd1\xfb\xcd\xa2\xd2\x12\xa4\x85"
+ "\xdf\xa5\x65\xc9\x27\x2d\x8b\xd7\x8b\xfe\x6d\xc4\xd1\xd9\x83\x1c\x91"
+ "\x7d\x3d\xd0\xa4\xcd\xe1\xe7\xb9\x7a\x11\x38\xf9\x8b\x3c\xec\x30\xb6"
+ "\x36\xb9\x92\x64\x81\x56\x3c\xbc\xf9\x49\xfb\xba\x82\xb7\xa0\xfa\x65"
+ "\x79\x83\xb9\x4c\xa7\xfd\x53\x0b\x5a\xe4\xde\xf9\xfc\x38\x7e\xb5\x2c"
+ "\xa0\xc3\xb2\xfc\x7c\x38\xb0\x63\x50\xaf\x00\xaa\xb2\xad\x49\x54\x1e"
+ "\x8b\x11\x88\x9b\x6e\xae\x3b\x23\xa3\xdd\x53\x51\x80\x7a\x0b\x91\x4e"
+ "\x6d\x32\x01\xbd\x17\x81\x12\x64\x9f\x84\xae\x76\x53\x1a\x63\xa0\xda"
+ "\xcc\x45\x04\x72\xb0\xa7\xfb\xfa\x02\x39\x53\xc1\x83\x1f\x88\x54\x47"
+ "\x88\x63\x20\x71\x5d\xe2\xaa\x7c\x53\x39\x5e\x35\x25\xee\xe6\x5c\x15"
+ "\x5e\x14\xbe\x99\xde\x25\x19\xe7\x13\xdb\xce\xa3\xd3\x6c\x5c\xbb\x0e"
+ "\x6b";
+
+static const unsigned char sha1_sig[] =
+ "\x69\x99\x89\x28\xe0\x38\x34\x91\x29\xb6\xac\x4b\xe9\x51\xbd\xbe\xc8"
+ "\x1a\x2d\xb6\xca\x99\xa3\x9f\x6a\x8b\x94\x5a\x51\x37\xd5\x8d\xae\x87"
+ "\xed\xbc\x8e\xb8\xa3\x60\x6b\xf6\xe6\x72\xfc\x26\x2a\x39\x2b\xfe\x88"
+ "\x1a\xa9\xd1\x93\xc7\xb9\xf8\xb6\x45\xa1\xf9\xa1\x56\x78\x7b\x00\xec"
+ "\x33\x83\xd4\x93\x25\x48\xb3\x50\x09\xd0\xbc\x7f\xac\x67\xc7\xa2\x7f"
+ "\xfc\xf6\x5a\xef\xf8\x5a\xad\x52\x74\xf5\x71\x34\xd9\x3d\x33\x8b\x4d"
+ "\x99\x64\x7e\x14\x59\xbe\xdf\x26\x8a\x67\x96\x6c\x1f\x79\x85\x10\x0d"
+ "\x7f\xd6\xa4\xba\x57\x41\x03\x71\x4e\x8c\x17\xd5\xc4\xfb\x4a\xbe\x66"
+ "\x45\x15\x45\x0c\x02\xe0\x10\xe1\xbb\x33\x8d\x90\x34\x3c\x94\xa4\x4c"
+ "\x7c\xd0\x5e\x90\x76\x80\x59\xb2\xfa\x54\xbf\xa9\x86\xb8\x84\x1e\x28"
+ "\x48\x60\x2f\x9e\xa4\xbc\xd4\x9c\x20\x27\x16\xac\x33\xcb\xcf\xab\x93"
+ "\x7a\x3b\x74\xa0\x18\x92\xa1\x4f\xfc\x52\x19\xee\x7a\x13\x73\xba\x36"
+ "\xaf\x78\x5d\xb6\x1f\x96\x76\x15\x73\xee\x04\xa8\x70\x27\xf7\xe7\xfa"
+ "\xe8\xf6\xc8\x5f\x4a\x81\x56\x0a\x94\xf3\xc6\x98\xd2\x93\xc4\x0b\x49"
+ "\x6b\x44\xd3\x73\xa2\xe3\xef\x5d\x9e\x68\xac\xa7\x42\xb1\xbb\x65\xbe"
+ "\x59";
+
+static const unsigned char sha256_sig[] =
+ "\x0f\x8c\xdb\xe6\xb6\x21\xc8\xc5\x28\x76\x7d\xf6\xf2\x3b\x78\x47\x77"
+ "\x03\x34\xc5\x5e\xc0\xda\x42\x41\xc0\x0f\x97\xd3\xd0\x53\xa1\xd6\x87"
+ "\xe4\x16\x29\x9a\xa5\x59\xf4\x01\xad\xc9\x04\xe7\x61\xe2\xcb\x79\x73"
+ "\xce\xe0\xa6\x85\xe5\x10\x8c\x4b\xc5\x68\x3b\x96\x42\x3f\x56\xb3\x6d"
+ "\x89\xc4\xff\x72\x36\xf2\x3f\xed\xe9\xb8\xe3\xae\xab\x3c\xb7\xaa\xf7"
+ "\x1f\x8f\x26\x6b\xee\xc1\xac\x72\x89\x23\x8b\x7a\xd7\x8c\x84\xf3\xf5"
+ "\x97\xa8\x8d\xd3\xef\xb2\x5e\x06\x04\x21\xdd\x28\xa2\x28\x83\x68\x9b"
+ "\xac\x34\xdd\x36\x33\xda\xdd\xa4\x59\xc7\x5a\x4d\xf3\x83\x06\xd5\xc0"
+ "\x0d\x1f\x4f\x47\x2f\x9f\xcc\xc2\x0d\x21\x1e\x82\xb9\x3d\xf3\xa4\x1a"
+ "\xa6\xd8\x0e\x72\x1d\x71\x17\x1c\x54\xad\x37\x3e\xa4\x0e\x70\x86\x53"
+ "\xfb\x40\xad\xb9\x14\xf8\x8d\x93\xbb\xd7\xe7\x31\xce\xe0\x98\xda\x27"
+ "\x1c\x18\x8e\xd8\x85\xcb\xa7\xb1\x18\xac\x8c\xa8\x9d\xa9\xe2\xf6\x30"
+ "\x95\xa4\x81\xf4\x1c\xa0\x31\xd5\xc7\x9d\x28\x33\xee\x7f\x08\x4f\xcb"
+ "\xd1\x14\x17\xdf\xd0\x88\x78\x47\x29\xaf\x6c\xb2\x62\xa6\x30\x87\x29"
+ "\xaa\x80\x19\x7d\x2f\x05\xe3\x7e\x23\x73\x88\x08\xcc\xbd\x50\x46\x09"
+ "\x2a";
+
+static const unsigned char sha512_sig[] =
+ "\x15\xda\x87\x87\x1f\x76\x08\xd3\x9d\x3a\xb9\xd2\x6a\x0e\x3b\x7d\xdd"
+ "\xec\x7d\xc4\x6d\x26\xf5\x04\xd3\x76\xc7\x83\xc4\x81\x69\x35\xe9\x47"
+ "\xbf\x49\xd1\xc0\xf9\x01\x4e\x0a\x34\x5b\xd0\xec\x6e\xe2\x2e\xe9\x2d"
+ "\x00\xfd\xe0\xa0\x28\x54\x53\x19\x49\x6d\xd2\x58\xb9\x47\xfa\x45\xad"
+ "\xd2\x1d\x52\xac\x80\xcb\xfc\x91\x97\x84\x58\x5f\xab\x21\x62\x60\x79"
+ "\xb8\x8a\x83\xe1\xf1\xcb\x05\x4c\x92\x56\x62\xd9\xbf\xa7\x81\x34\x23"
+ "\xdf\xd7\xa7\xc4\xdf\xde\x96\x00\x57\x4b\x78\x85\xb9\x3b\xdd\x3f\x98"
+ "\x88\x59\x1d\x48\xcf\x5a\xa8\xb7\x2a\x8b\x77\x93\x8e\x38\x3a\x0c\xa7"
+ "\x8a\x5f\xe6\x9f\xcb\xf0\x9a\x6b\xb6\x91\x04\x8b\x69\x6a\x37\xee\xa2"
+ "\xad\x5f\x31\x20\x96\xd6\x51\x80\xbf\x62\x48\xb8\xe4\x94\x10\x86\x4e"
+ "\xf2\x22\x1e\xa4\xd5\x54\xfe\xe1\x35\x49\xaf\xf8\x62\xfc\x11\xeb\xf7"
+ "\x3d\xd5\x5e\xaf\x11\xbd\x3d\xa9\x3a\x9f\x7f\xe8\xb4\x0d\xa2\xbb\x1c"
+ "\xbd\x4c\xed\x9e\x81\xb1\xec\xd3\xea\xaa\x03\xe3\x14\xdf\x8c\xb3\x78"
+ "\x85\x5e\x87\xad\xec\x41\x1a\xa9\x4f\xd2\xe6\xc6\xbe\xfa\xb8\x10\xea"
+ "\x74\x25\x36\x0c\x23\xe2\x24\xb7\x21\xb7\x0d\xaf\xf6\xb4\x31\xf5\x75"
+ "\xf1";
+
+static isc_result_t
+check_algorithm(unsigned char algorithm) {
+ BIGNUM *n = NULL, *e = NULL;
+ EVP_MD_CTX *evp_md_ctx = EVP_MD_CTX_create();
+ EVP_PKEY *pkey = NULL;
+ const EVP_MD *type = NULL;
+ const unsigned char *sig = NULL;
+ int status;
+ isc_result_t ret = ISC_R_SUCCESS;
+ size_t len;
+ RSA *rsa = NULL;
+
+ if (evp_md_ctx == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+
+ switch (algorithm) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ type = EVP_sha1(); /* SHA1 + RSA */
+ sig = sha1_sig;
+ len = sizeof(sha1_sig) - 1;
+ break;
+ case DST_ALG_RSASHA256:
+ type = EVP_sha256(); /* SHA256 + RSA */
+ sig = sha256_sig;
+ len = sizeof(sha256_sig) - 1;
+ break;
+ case DST_ALG_RSASHA512:
+ type = EVP_sha512();
+ sig = sha512_sig;
+ len = sizeof(sha512_sig) - 1;
+ break;
+ default:
+ DST_RET(ISC_R_NOTIMPLEMENTED);
+ }
+
+ if (type == NULL) {
+ DST_RET(ISC_R_NOTIMPLEMENTED);
+ }
+
+ /*
+ * Construct pkey.
+ */
+ e = BN_bin2bn(e_bytes, sizeof(e_bytes) - 1, NULL);
+ n = BN_bin2bn(n_bytes, sizeof(n_bytes) - 1, NULL);
+ if (e == NULL || n == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+
+ rsa = RSA_new();
+ if (rsa == NULL) {
+ DST_RET(dst__openssl_toresult2("RSA_new",
+ DST_R_OPENSSLFAILURE));
+ }
+ status = RSA_set0_key(rsa, n, e, NULL);
+ if (status != 1) {
+ DST_RET(dst__openssl_toresult2("RSA_set0_key",
+ DST_R_OPENSSLFAILURE));
+ }
+
+ /* These are now managed by OpenSSL. */
+ n = NULL;
+ e = NULL;
+
+ pkey = EVP_PKEY_new();
+ if (pkey == NULL) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_new",
+ DST_R_OPENSSLFAILURE));
+ }
+ status = EVP_PKEY_set1_RSA(pkey, rsa);
+ if (status != 1) {
+ DST_RET(dst__openssl_toresult2("EVP_PKEY_set1_RSA",
+ DST_R_OPENSSLFAILURE));
+ }
+
+ /*
+ * Check that we can verify the signature.
+ */
+ if (EVP_DigestInit_ex(evp_md_ctx, type, NULL) != 1 ||
+ EVP_DigestUpdate(evp_md_ctx, "test", 4) != 1 ||
+ EVP_VerifyFinal(evp_md_ctx, sig, len, pkey) != 1)
+ {
+ DST_RET(ISC_R_NOTIMPLEMENTED);
+ }
+
+err:
+ BN_free(e);
+ BN_free(n);
+ if (rsa != NULL) {
+ RSA_free(rsa);
+ }
+ if (pkey != NULL) {
+ EVP_PKEY_free(pkey);
+ }
+ if (evp_md_ctx != NULL) {
+ EVP_MD_CTX_destroy(evp_md_ctx);
+ }
+ ERR_clear_error();
+ return (ret);
+}
+
+isc_result_t
+dst__opensslrsa_init(dst_func_t **funcp, unsigned char algorithm) {
+ isc_result_t result;
+
+ REQUIRE(funcp != NULL);
+
+ result = check_algorithm(algorithm);
+
+ if (result == ISC_R_SUCCESS) {
+ if (*funcp == NULL) {
+ *funcp = &opensslrsa_functions;
+ }
+ } else if (result == ISC_R_NOTIMPLEMENTED) {
+ result = ISC_R_SUCCESS;
+ }
+
+ return (result);
+}
+
+#endif /* !USE_PKCS11 */
+
+/*! \file */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 15:42:50 +0000