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-rw-r--r--lib/dns/pkcs11rsa_link.c2115
1 files changed, 2115 insertions, 0 deletions
diff --git a/lib/dns/pkcs11rsa_link.c b/lib/dns/pkcs11rsa_link.c
new file mode 100644
index 0000000..b439dd7
--- /dev/null
+++ b/lib/dns/pkcs11rsa_link.c
@@ -0,0 +1,2115 @@
+/*
+ * 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.
+ */
+
+/*! \file */
+
+#if USE_PKCS11
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <isc/mem.h>
+#include <isc/safe.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <pk11/internal.h>
+#include <pk11/site.h>
+
+#include <dst/result.h>
+
+#include "dst_internal.h"
+#include "dst_parse.h"
+#include "dst_pkcs11.h"
+
+/*
+ * Limit the size of public exponents.
+ */
+#ifndef RSA_MAX_PUBEXP_BITS
+#define RSA_MAX_PUBEXP_BITS 35
+#endif /* ifndef RSA_MAX_PUBEXP_BITS */
+
+#define DST_RET(a) \
+ { \
+ ret = a; \
+ goto err; \
+ }
+
+static CK_BBOOL truevalue = TRUE;
+static CK_BBOOL falsevalue = FALSE;
+
+static void
+pkcs11rsa_destroy(dst_key_t *key);
+
+#ifndef PK11_RSA_PKCS_REPLACE
+
+static isc_result_t
+pkcs11rsa_createctx_sign(dst_key_t *key, dst_context_t *dctx) {
+ CK_RV rv;
+ CK_MECHANISM mech = { 0, NULL, 0 };
+ CK_OBJECT_CLASS keyClass = CKO_PRIVATE_KEY;
+ CK_KEY_TYPE keyType = CKK_RSA;
+ CK_ATTRIBUTE keyTemplate[] = {
+ { CKA_CLASS, &keyClass, (CK_ULONG)sizeof(keyClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_PRIVATE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_SENSITIVE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_SIGN, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_MODULUS, NULL, 0 },
+ { CKA_PUBLIC_EXPONENT, NULL, 0 },
+ { CKA_PRIVATE_EXPONENT, NULL, 0 },
+ { CKA_PRIME_1, NULL, 0 },
+ { CKA_PRIME_2, NULL, 0 },
+ { CKA_EXPONENT_1, NULL, 0 },
+ { CKA_EXPONENT_2, NULL, 0 },
+ { CKA_COEFFICIENT, NULL, 0 }
+ };
+ CK_ATTRIBUTE *attr;
+ CK_SLOT_ID slotid;
+ pk11_object_t *rsa;
+ pk11_context_t *pk11_ctx;
+ isc_result_t ret;
+ unsigned int i;
+
+ REQUIRE(key->key_alg == DST_ALG_RSASHA1 ||
+ key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ key->key_alg == DST_ALG_RSASHA256 ||
+ 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();
+ }
+
+ rsa = key->keydata.pkey;
+
+ pk11_ctx = isc_mem_get(dctx->mctx, sizeof(*pk11_ctx));
+ memset(pk11_ctx, 0, sizeof(*pk11_ctx));
+ if (rsa->ontoken) {
+ slotid = rsa->slot;
+ } else {
+ slotid = pk11_get_best_token(OP_RSA);
+ }
+ ret = pk11_get_session(pk11_ctx, OP_RSA, true, false, rsa->reqlogon,
+ NULL, slotid);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ if (rsa->ontoken && (rsa->object != CK_INVALID_HANDLE)) {
+ pk11_ctx->ontoken = rsa->ontoken;
+ pk11_ctx->object = rsa->object;
+ goto token_key;
+ }
+
+ for (attr = pk11_attribute_first(rsa); attr != NULL;
+ attr = pk11_attribute_next(rsa, attr))
+ {
+ switch (attr->type) {
+ case CKA_MODULUS:
+ INSIST(keyTemplate[6].type == attr->type);
+ keyTemplate[6].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[6].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[6].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PUBLIC_EXPONENT:
+ INSIST(keyTemplate[7].type == attr->type);
+ keyTemplate[7].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[7].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[7].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PRIVATE_EXPONENT:
+ INSIST(keyTemplate[8].type == attr->type);
+ keyTemplate[8].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[8].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[8].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PRIME_1:
+ INSIST(keyTemplate[9].type == attr->type);
+ keyTemplate[9].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[9].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[9].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PRIME_2:
+ INSIST(keyTemplate[10].type == attr->type);
+ keyTemplate[10].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[10].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[10].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_EXPONENT_1:
+ INSIST(keyTemplate[11].type == attr->type);
+ keyTemplate[11].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[11].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[11].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_EXPONENT_2:
+ INSIST(keyTemplate[12].type == attr->type);
+ keyTemplate[12].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[12].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[12].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_COEFFICIENT:
+ INSIST(keyTemplate[13].type == attr->type);
+ keyTemplate[13].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[13].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[13].ulValueLen = attr->ulValueLen;
+ break;
+ }
+ }
+ pk11_ctx->object = CK_INVALID_HANDLE;
+ pk11_ctx->ontoken = false;
+ PK11_RET(pkcs_C_CreateObject,
+ (pk11_ctx->session, keyTemplate, (CK_ULONG)14,
+ &pk11_ctx->object),
+ ISC_R_FAILURE);
+
+token_key:
+
+ switch (dctx->key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ mech.mechanism = CKM_SHA1_RSA_PKCS;
+ break;
+ case DST_ALG_RSASHA256:
+ mech.mechanism = CKM_SHA256_RSA_PKCS;
+ break;
+ case DST_ALG_RSASHA512:
+ mech.mechanism = CKM_SHA512_RSA_PKCS;
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ PK11_RET(pkcs_C_SignInit, (pk11_ctx->session, &mech, pk11_ctx->object),
+ ISC_R_FAILURE);
+
+ dctx->ctxdata.pk11_ctx = pk11_ctx;
+
+ for (i = 6; i <= 13; i++) {
+ if (keyTemplate[i].pValue != NULL) {
+ {
+ isc_safe_memwipe(keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ isc_mem_put(dctx->mctx, keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ }
+ }
+ }
+
+ return (ISC_R_SUCCESS);
+
+err:
+ if (!pk11_ctx->ontoken && (pk11_ctx->object != CK_INVALID_HANDLE)) {
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, pk11_ctx->object);
+ }
+ for (i = 6; i <= 13; i++) {
+ if (keyTemplate[i].pValue != NULL) {
+ {
+ isc_safe_memwipe(keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ isc_mem_put(dctx->mctx, keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ }
+ }
+ }
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(dctx->mctx, pk11_ctx, sizeof(*pk11_ctx));
+
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_createctx_verify(dst_key_t *key, unsigned int maxbits,
+ dst_context_t *dctx) {
+ CK_RV rv;
+ CK_MECHANISM mech = { 0, NULL, 0 };
+ CK_OBJECT_CLASS keyClass = CKO_PUBLIC_KEY;
+ CK_KEY_TYPE keyType = CKK_RSA;
+ CK_ATTRIBUTE keyTemplate[] = {
+ { CKA_CLASS, &keyClass, (CK_ULONG)sizeof(keyClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_PRIVATE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_VERIFY, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_MODULUS, NULL, 0 },
+ { CKA_PUBLIC_EXPONENT, NULL, 0 },
+ };
+ CK_ATTRIBUTE *attr;
+ pk11_object_t *rsa;
+ pk11_context_t *pk11_ctx;
+ isc_result_t ret;
+ unsigned int i;
+
+ REQUIRE(key->key_alg == DST_ALG_RSASHA1 ||
+ key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ key->key_alg == DST_ALG_RSASHA256 ||
+ key->key_alg == DST_ALG_RSASHA512);
+ REQUIRE(maxbits <= RSA_MAX_PUBEXP_BITS);
+
+ /*
+ * 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();
+ }
+
+ rsa = key->keydata.pkey;
+
+ pk11_ctx = isc_mem_get(dctx->mctx, sizeof(*pk11_ctx));
+ ret = pk11_get_session(pk11_ctx, OP_RSA, true, false, rsa->reqlogon,
+ NULL, pk11_get_best_token(OP_RSA));
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ for (attr = pk11_attribute_first(rsa); attr != NULL;
+ attr = pk11_attribute_next(rsa, attr))
+ {
+ unsigned int bits;
+
+ switch (attr->type) {
+ case CKA_MODULUS:
+ INSIST(keyTemplate[5].type == attr->type);
+ keyTemplate[5].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[5].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[5].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PUBLIC_EXPONENT:
+ INSIST(keyTemplate[6].type == attr->type);
+ keyTemplate[6].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[6].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[6].ulValueLen = attr->ulValueLen;
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen,
+ &bits);
+ if (ret != ISC_R_SUCCESS ||
+ (bits > maxbits && maxbits != 0))
+ {
+ DST_RET(DST_R_VERIFYFAILURE);
+ }
+ break;
+ }
+ }
+ pk11_ctx->object = CK_INVALID_HANDLE;
+ pk11_ctx->ontoken = false;
+ PK11_RET(pkcs_C_CreateObject,
+ (pk11_ctx->session, keyTemplate, (CK_ULONG)7,
+ &pk11_ctx->object),
+ ISC_R_FAILURE);
+
+ switch (dctx->key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ mech.mechanism = CKM_SHA1_RSA_PKCS;
+ break;
+ case DST_ALG_RSASHA256:
+ mech.mechanism = CKM_SHA256_RSA_PKCS;
+ break;
+ case DST_ALG_RSASHA512:
+ mech.mechanism = CKM_SHA512_RSA_PKCS;
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ PK11_RET(pkcs_C_VerifyInit,
+ (pk11_ctx->session, &mech, pk11_ctx->object), ISC_R_FAILURE);
+
+ dctx->ctxdata.pk11_ctx = pk11_ctx;
+
+ for (i = 5; i <= 6; i++) {
+ if (keyTemplate[i].pValue != NULL) {
+ {
+ isc_safe_memwipe(keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ isc_mem_put(dctx->mctx, keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ }
+ }
+ }
+
+ return (ISC_R_SUCCESS);
+
+err:
+ if (!pk11_ctx->ontoken && (pk11_ctx->object != CK_INVALID_HANDLE)) {
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, pk11_ctx->object);
+ }
+ for (i = 5; i <= 6; i++) {
+ if (keyTemplate[i].pValue != NULL) {
+ {
+ isc_safe_memwipe(keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ isc_mem_put(dctx->mctx, keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ }
+ }
+ }
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(dctx->mctx, pk11_ctx, sizeof(*pk11_ctx));
+
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_createctx(dst_key_t *key, dst_context_t *dctx) {
+ if (dctx->use == DO_SIGN) {
+ return (pkcs11rsa_createctx_sign(key, dctx));
+ } else {
+ return (pkcs11rsa_createctx_verify(key, 0U, dctx));
+ }
+}
+
+static isc_result_t
+pkcs11rsa_createctx2(dst_key_t *key, int maxbits, dst_context_t *dctx) {
+ if (dctx->use == DO_SIGN) {
+ return (pkcs11rsa_createctx_sign(key, dctx));
+ } else {
+ return (pkcs11rsa_createctx_verify(key, (unsigned)maxbits,
+ dctx));
+ }
+}
+
+static void
+pkcs11rsa_destroyctx(dst_context_t *dctx) {
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+
+ if (pk11_ctx != NULL) {
+ if (!pk11_ctx->ontoken &&
+ (pk11_ctx->object != CK_INVALID_HANDLE))
+ {
+ (void)pkcs_C_DestroyObject(pk11_ctx->session,
+ pk11_ctx->object);
+ }
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(dctx->mctx, pk11_ctx, sizeof(*pk11_ctx));
+ dctx->ctxdata.pk11_ctx = NULL;
+ }
+}
+
+static isc_result_t
+pkcs11rsa_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ CK_RV rv;
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+ isc_result_t ret = ISC_R_SUCCESS;
+
+ if (dctx->use == DO_SIGN) {
+ PK11_CALL(pkcs_C_SignUpdate,
+ (pk11_ctx->session, (CK_BYTE_PTR)data->base,
+ (CK_ULONG)data->length),
+ ISC_R_FAILURE);
+ } else {
+ PK11_CALL(pkcs_C_VerifyUpdate,
+ (pk11_ctx->session, (CK_BYTE_PTR)data->base,
+ (CK_ULONG)data->length),
+ ISC_R_FAILURE);
+ }
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ CK_RV rv;
+ CK_ULONG siglen = 0;
+ isc_region_t r;
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+ isc_result_t ret = ISC_R_SUCCESS;
+
+ PK11_RET(pkcs_C_SignFinal, (pk11_ctx->session, NULL, &siglen),
+ DST_R_SIGNFAILURE);
+
+ isc_buffer_availableregion(sig, &r);
+
+ if (r.length < (unsigned int)siglen) {
+ return (ISC_R_NOSPACE);
+ }
+
+ PK11_RET(pkcs_C_SignFinal,
+ (pk11_ctx->session, (CK_BYTE_PTR)r.base, &siglen),
+ DST_R_SIGNFAILURE);
+
+ isc_buffer_add(sig, (unsigned int)siglen);
+
+err:
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ CK_RV rv;
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+ isc_result_t ret = ISC_R_SUCCESS;
+
+ PK11_CALL(pkcs_C_VerifyFinal,
+ (pk11_ctx->session, (CK_BYTE_PTR)sig->base,
+ (CK_ULONG)sig->length),
+ DST_R_VERIFYFAILURE);
+ return (ret);
+}
+
+#else /* ifndef PK11_RSA_PKCS_REPLACE */
+
+/*
+ * CKM_<hash>_RSA_PKCS mechanisms are not available so fall back
+ * to CKM_RSA_PKCS and do the EMSA-PKCS#1-v1.5 encapsulation by hand.
+ */
+
+CK_BYTE md5_der[] = { 0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86, 0x48,
+ 0x86, 0xf7, 0x0d, 0x02, 0x05, 0x05, 0x00, 0x04, 0x10 };
+CK_BYTE sha1_der[] = { 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e,
+ 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 };
+CK_BYTE sha256_der[] = { 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60,
+ 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02,
+ 0x01, 0x05, 0x00, 0x04, 0x20 };
+CK_BYTE sha512_der[] = { 0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60,
+ 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02,
+ 0x03, 0x05, 0x00, 0x04, 0x40 };
+#define MAX_DER_SIZE 19
+#define MIN_PKCS1_PADLEN 11
+
+static isc_result_t
+pkcs11rsa_createctx(dst_key_t *key, dst_context_t *dctx) {
+ CK_RV rv;
+ CK_MECHANISM mech = { 0, NULL, 0 };
+ CK_SLOT_ID slotid;
+ pk11_object_t *rsa = key->keydata.pkey;
+ pk11_context_t *pk11_ctx;
+ isc_result_t ret;
+
+ REQUIRE(key->key_alg == DST_ALG_RSASHA1 ||
+ key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ key->key_alg == DST_ALG_RSASHA256 ||
+ key->key_alg == DST_ALG_RSASHA512);
+ REQUIRE(rsa != NULL);
+
+ /*
+ * 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();
+ }
+
+ switch (key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ mech.mechanism = CKM_SHA_1;
+ break;
+ case DST_ALG_RSASHA256:
+ mech.mechanism = CKM_SHA256;
+ break;
+ case DST_ALG_RSASHA512:
+ mech.mechanism = CKM_SHA512;
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ pk11_ctx = isc_mem_get(dctx->mctx, sizeof(*pk11_ctx));
+ memset(pk11_ctx, 0, sizeof(*pk11_ctx));
+ if (rsa->ontoken) {
+ slotid = rsa->slot;
+ } else {
+ slotid = pk11_get_best_token(OP_RSA);
+ }
+ ret = pk11_get_session(pk11_ctx, OP_RSA, true, false, rsa->reqlogon,
+ NULL, slotid);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ PK11_RET(pkcs_C_DigestInit, (pk11_ctx->session, &mech), ISC_R_FAILURE);
+ dctx->ctxdata.pk11_ctx = pk11_ctx;
+ return (ISC_R_SUCCESS);
+
+err:
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(dctx->mctx, pk11_ctx, sizeof(*pk11_ctx));
+
+ return (ret);
+}
+
+static void
+pkcs11rsa_destroyctx(dst_context_t *dctx) {
+ CK_BYTE garbage[ISC_SHA512_DIGESTLENGTH];
+ CK_ULONG len = ISC_SHA512_DIGESTLENGTH;
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+
+ if (pk11_ctx != NULL) {
+ (void)pkcs_C_DigestFinal(pk11_ctx->session, garbage, &len);
+ isc_safe_memwipe(garbage, sizeof(garbage));
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(dctx->mctx, pk11_ctx, sizeof(*pk11_ctx));
+ dctx->ctxdata.pk11_ctx = NULL;
+ }
+}
+
+static isc_result_t
+pkcs11rsa_adddata(dst_context_t *dctx, const isc_region_t *data) {
+ CK_RV rv;
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+ isc_result_t ret = ISC_R_SUCCESS;
+
+ PK11_CALL(pkcs_C_DigestUpdate,
+ (pk11_ctx->session, (CK_BYTE_PTR)data->base,
+ (CK_ULONG)data->length),
+ ISC_R_FAILURE);
+
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
+ CK_RV rv;
+ CK_MECHANISM mech = { CKM_RSA_PKCS, NULL, 0 };
+ CK_OBJECT_HANDLE hKey = CK_INVALID_HANDLE;
+ CK_OBJECT_CLASS keyClass = CKO_PRIVATE_KEY;
+ CK_KEY_TYPE keyType = CKK_RSA;
+ CK_ATTRIBUTE keyTemplate[] = {
+ { CKA_CLASS, &keyClass, (CK_ULONG)sizeof(keyClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_PRIVATE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_SENSITIVE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_SIGN, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_MODULUS, NULL, 0 },
+ { CKA_PUBLIC_EXPONENT, NULL, 0 },
+ { CKA_PRIVATE_EXPONENT, NULL, 0 },
+ { CKA_PRIME_1, NULL, 0 },
+ { CKA_PRIME_2, NULL, 0 },
+ { CKA_EXPONENT_1, NULL, 0 },
+ { CKA_EXPONENT_2, NULL, 0 },
+ { CKA_COEFFICIENT, NULL, 0 }
+ };
+ CK_ATTRIBUTE *attr;
+ CK_BYTE digest[MAX_DER_SIZE + ISC_SHA512_DIGESTLENGTH];
+ CK_BYTE *der;
+ CK_ULONG derlen;
+ CK_ULONG hashlen;
+ CK_ULONG dgstlen;
+ CK_ULONG siglen = 0;
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+ dst_key_t *key = dctx->key;
+ pk11_object_t *rsa = key->keydata.pkey;
+ isc_region_t r;
+ isc_result_t ret = ISC_R_SUCCESS;
+ unsigned int i;
+
+ REQUIRE(key->key_alg == DST_ALG_RSASHA1 ||
+ key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ key->key_alg == DST_ALG_RSASHA256 ||
+ key->key_alg == DST_ALG_RSASHA512);
+ REQUIRE(rsa != NULL);
+
+ /*
+ * 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();
+ }
+
+ switch (key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ der = sha1_der;
+ derlen = sizeof(sha1_der);
+ hashlen = ISC_SHA1_DIGESTLENGTH;
+ break;
+ case DST_ALG_RSASHA256:
+ der = sha256_der;
+ derlen = sizeof(sha256_der);
+ hashlen = ISC_SHA256_DIGESTLENGTH;
+ break;
+ case DST_ALG_RSASHA512:
+ der = sha512_der;
+ derlen = sizeof(sha512_der);
+ hashlen = ISC_SHA512_DIGESTLENGTH;
+ break;
+ default:
+ UNREACHABLE();
+ }
+ dgstlen = derlen + hashlen;
+ INSIST(dgstlen <= sizeof(digest));
+ memmove(digest, der, derlen);
+
+ PK11_RET(pkcs_C_DigestFinal,
+ (pk11_ctx->session, digest + derlen, &hashlen),
+ DST_R_SIGNFAILURE);
+
+ isc_buffer_availableregion(sig, &r);
+ if (r.length < (unsigned int)dgstlen + MIN_PKCS1_PADLEN) {
+ return (ISC_R_NOSPACE);
+ }
+
+ if (rsa->ontoken && (rsa->object != CK_INVALID_HANDLE)) {
+ pk11_ctx->ontoken = rsa->ontoken;
+ pk11_ctx->object = rsa->object;
+ goto token_key;
+ }
+
+ for (attr = pk11_attribute_first(rsa); attr != NULL;
+ attr = pk11_attribute_next(rsa, attr))
+ {
+ switch (attr->type) {
+ case CKA_MODULUS:
+ INSIST(keyTemplate[6].type == attr->type);
+ keyTemplate[6].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[6].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[6].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PUBLIC_EXPONENT:
+ INSIST(keyTemplate[7].type == attr->type);
+ keyTemplate[7].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[7].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[7].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PRIVATE_EXPONENT:
+ INSIST(keyTemplate[8].type == attr->type);
+ keyTemplate[8].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[8].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[8].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PRIME_1:
+ INSIST(keyTemplate[9].type == attr->type);
+ keyTemplate[9].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[9].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[9].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PRIME_2:
+ INSIST(keyTemplate[10].type == attr->type);
+ keyTemplate[10].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[10].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[10].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_EXPONENT_1:
+ INSIST(keyTemplate[11].type == attr->type);
+ keyTemplate[11].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[11].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[11].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_EXPONENT_2:
+ INSIST(keyTemplate[12].type == attr->type);
+ keyTemplate[12].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[12].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[12].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_COEFFICIENT:
+ INSIST(keyTemplate[13].type == attr->type);
+ keyTemplate[13].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[13].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[13].ulValueLen = attr->ulValueLen;
+ break;
+ }
+ }
+ pk11_ctx->object = CK_INVALID_HANDLE;
+ pk11_ctx->ontoken = false;
+ PK11_RET(pkcs_C_CreateObject,
+ (pk11_ctx->session, keyTemplate, (CK_ULONG)14, &hKey),
+ ISC_R_FAILURE);
+
+token_key:
+
+ PK11_RET(pkcs_C_SignInit,
+ (pk11_ctx->session, &mech,
+ pk11_ctx->ontoken ? pk11_ctx->object : hKey),
+ ISC_R_FAILURE);
+
+ PK11_RET(pkcs_C_Sign,
+ (pk11_ctx->session, digest, dgstlen, NULL, &siglen),
+ DST_R_SIGNFAILURE);
+
+ if (r.length < (unsigned int)siglen) {
+ return (ISC_R_NOSPACE);
+ }
+
+ PK11_RET(pkcs_C_Sign,
+ (pk11_ctx->session, digest, dgstlen, (CK_BYTE_PTR)r.base,
+ &siglen),
+ DST_R_SIGNFAILURE);
+
+ isc_buffer_add(sig, (unsigned int)siglen);
+
+err:
+ if (hKey != CK_INVALID_HANDLE) {
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, hKey);
+ }
+ for (i = 6; i <= 13; i++) {
+ if (keyTemplate[i].pValue != NULL) {
+ {
+ isc_safe_memwipe(keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ isc_mem_put(dctx->mctx, keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ }
+ }
+ }
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(dctx->mctx, pk11_ctx, sizeof(*pk11_ctx));
+ dctx->ctxdata.pk11_ctx = NULL;
+
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
+ CK_RV rv;
+ CK_MECHANISM mech = { CKM_RSA_PKCS, NULL, 0 };
+ CK_OBJECT_HANDLE hKey = CK_INVALID_HANDLE;
+ CK_OBJECT_CLASS keyClass = CKO_PUBLIC_KEY;
+ CK_KEY_TYPE keyType = CKK_RSA;
+ CK_ATTRIBUTE keyTemplate[] = {
+ { CKA_CLASS, &keyClass, (CK_ULONG)sizeof(keyClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_PRIVATE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_VERIFY, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_MODULUS, NULL, 0 },
+ { CKA_PUBLIC_EXPONENT, NULL, 0 },
+ };
+ CK_ATTRIBUTE *attr;
+ CK_BYTE digest[MAX_DER_SIZE + ISC_SHA512_DIGESTLENGTH];
+ CK_BYTE *der;
+ CK_ULONG derlen;
+ CK_ULONG hashlen;
+ CK_ULONG dgstlen;
+ pk11_context_t *pk11_ctx = dctx->ctxdata.pk11_ctx;
+ dst_key_t *key = dctx->key;
+ pk11_object_t *rsa = key->keydata.pkey;
+ isc_result_t ret = ISC_R_SUCCESS;
+ unsigned int i;
+
+ REQUIRE(key->key_alg == DST_ALG_RSASHA1 ||
+ key->key_alg == DST_ALG_NSEC3RSASHA1 ||
+ key->key_alg == DST_ALG_RSASHA256 ||
+ key->key_alg == DST_ALG_RSASHA512);
+ REQUIRE(rsa != NULL);
+
+ switch (key->key_alg) {
+ case DST_ALG_RSASHA1:
+ case DST_ALG_NSEC3RSASHA1:
+ der = sha1_der;
+ derlen = sizeof(sha1_der);
+ hashlen = ISC_SHA1_DIGESTLENGTH;
+ break;
+ case DST_ALG_RSASHA256:
+ der = sha256_der;
+ derlen = sizeof(sha256_der);
+ hashlen = ISC_SHA256_DIGESTLENGTH;
+ break;
+ case DST_ALG_RSASHA512:
+ der = sha512_der;
+ derlen = sizeof(sha512_der);
+ hashlen = ISC_SHA512_DIGESTLENGTH;
+ break;
+ default:
+ UNREACHABLE();
+ }
+ dgstlen = derlen + hashlen;
+ INSIST(dgstlen <= sizeof(digest));
+ memmove(digest, der, derlen);
+
+ PK11_RET(pkcs_C_DigestFinal,
+ (pk11_ctx->session, digest + derlen, &hashlen),
+ DST_R_SIGNFAILURE);
+
+ for (attr = pk11_attribute_first(rsa); attr != NULL;
+ attr = pk11_attribute_next(rsa, attr))
+ {
+ unsigned int bits;
+
+ switch (attr->type) {
+ case CKA_MODULUS:
+ INSIST(keyTemplate[5].type == attr->type);
+ keyTemplate[5].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[5].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[5].ulValueLen = attr->ulValueLen;
+ break;
+ case CKA_PUBLIC_EXPONENT:
+ INSIST(keyTemplate[6].type == attr->type);
+ keyTemplate[6].pValue = isc_mem_get(dctx->mctx,
+ attr->ulValueLen);
+ memmove(keyTemplate[6].pValue, attr->pValue,
+ attr->ulValueLen);
+ keyTemplate[6].ulValueLen = attr->ulValueLen;
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen,
+ &bits);
+ if (ret != ISC_R_SUCCESS || bits > RSA_MAX_PUBEXP_BITS)
+ {
+ DST_RET(DST_R_VERIFYFAILURE);
+ }
+ break;
+ }
+ }
+ pk11_ctx->object = CK_INVALID_HANDLE;
+ pk11_ctx->ontoken = false;
+ PK11_RET(pkcs_C_CreateObject,
+ (pk11_ctx->session, keyTemplate, (CK_ULONG)7, &hKey),
+ ISC_R_FAILURE);
+
+ PK11_RET(pkcs_C_VerifyInit, (pk11_ctx->session, &mech, hKey),
+ ISC_R_FAILURE);
+
+ PK11_RET(pkcs_C_Verify,
+ (pk11_ctx->session, digest, dgstlen, (CK_BYTE_PTR)sig->base,
+ (CK_ULONG)sig->length),
+ DST_R_VERIFYFAILURE);
+
+err:
+ if (hKey != CK_INVALID_HANDLE) {
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, hKey);
+ }
+ for (i = 5; i <= 6; i++) {
+ if (keyTemplate[i].pValue != NULL) {
+ {
+ isc_safe_memwipe(keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ isc_mem_put(dctx->mctx, keyTemplate[i].pValue,
+ keyTemplate[i].ulValueLen);
+ }
+ }
+ }
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(dctx->mctx, pk11_ctx, sizeof(*pk11_ctx));
+ dctx->ctxdata.pk11_ctx = NULL;
+
+ return (ret);
+}
+#endif /* ifndef PK11_RSA_PKCS_REPLACE */
+
+static bool
+pkcs11rsa_compare(const dst_key_t *key1, const dst_key_t *key2) {
+ pk11_object_t *rsa1, *rsa2;
+ CK_ATTRIBUTE *attr1, *attr2;
+
+ rsa1 = key1->keydata.pkey;
+ rsa2 = key2->keydata.pkey;
+
+ if ((rsa1 == NULL) && (rsa2 == NULL)) {
+ return (true);
+ } else if ((rsa1 == NULL) || (rsa2 == NULL)) {
+ return (false);
+ }
+
+ attr1 = pk11_attribute_bytype(rsa1, CKA_MODULUS);
+ attr2 = pk11_attribute_bytype(rsa2, CKA_MODULUS);
+ if ((attr1 == NULL) && (attr2 == NULL)) {
+ return (true);
+ } else if ((attr1 == NULL) || (attr2 == NULL) ||
+ (attr1->ulValueLen != attr2->ulValueLen) ||
+ !isc_safe_memequal(attr1->pValue, attr2->pValue,
+ attr1->ulValueLen))
+ {
+ return (false);
+ }
+
+ attr1 = pk11_attribute_bytype(rsa1, CKA_PUBLIC_EXPONENT);
+ attr2 = pk11_attribute_bytype(rsa2, CKA_PUBLIC_EXPONENT);
+ if ((attr1 == NULL) && (attr2 == NULL)) {
+ return (true);
+ } else if ((attr1 == NULL) || (attr2 == NULL) ||
+ (attr1->ulValueLen != attr2->ulValueLen) ||
+ !isc_safe_memequal(attr1->pValue, attr2->pValue,
+ attr1->ulValueLen))
+ {
+ return (false);
+ }
+
+ attr1 = pk11_attribute_bytype(rsa1, CKA_PRIVATE_EXPONENT);
+ attr2 = pk11_attribute_bytype(rsa2, CKA_PRIVATE_EXPONENT);
+ if (((attr1 != NULL) || (attr2 != NULL)) &&
+ ((attr1 == NULL) || (attr2 == NULL) ||
+ (attr1->ulValueLen != attr2->ulValueLen) ||
+ !isc_safe_memequal(attr1->pValue, attr2->pValue,
+ attr1->ulValueLen)))
+ {
+ return (false);
+ }
+
+ if (!rsa1->ontoken && !rsa2->ontoken) {
+ return (true);
+ } else if (rsa1->ontoken || rsa2->ontoken ||
+ (rsa1->object != rsa2->object))
+ {
+ return (false);
+ }
+
+ return (true);
+}
+
+static isc_result_t
+pkcs11rsa_generate(dst_key_t *key, int exp, void (*callback)(int)) {
+ CK_RV rv;
+ CK_MECHANISM mech = { CKM_RSA_PKCS_KEY_PAIR_GEN, NULL, 0 };
+ CK_OBJECT_HANDLE pub = CK_INVALID_HANDLE;
+ CK_ULONG bits = 0;
+ CK_BYTE pubexp[5];
+ CK_OBJECT_CLASS pubClass = CKO_PUBLIC_KEY;
+ CK_KEY_TYPE keyType = CKK_RSA;
+ CK_ATTRIBUTE pubTemplate[] = {
+ { CKA_CLASS, &pubClass, (CK_ULONG)sizeof(pubClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_PRIVATE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_VERIFY, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_MODULUS_BITS, &bits, (CK_ULONG)sizeof(bits) },
+ { CKA_PUBLIC_EXPONENT, &pubexp, (CK_ULONG)sizeof(pubexp) }
+ };
+ CK_OBJECT_HANDLE priv = CK_INVALID_HANDLE;
+ CK_OBJECT_CLASS privClass = CKO_PRIVATE_KEY;
+ CK_ATTRIBUTE privTemplate[] = {
+ { CKA_CLASS, &privClass, (CK_ULONG)sizeof(privClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_PRIVATE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_SENSITIVE, &falsevalue, (CK_ULONG)sizeof(falsevalue) },
+ { CKA_EXTRACTABLE, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_SIGN, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ };
+ CK_ATTRIBUTE *attr;
+ pk11_object_t *rsa;
+ pk11_context_t *pk11_ctx;
+ isc_result_t ret;
+ unsigned int i;
+
+ UNUSED(callback);
+
+ /*
+ * 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) {
+ return (ISC_R_FAILURE);
+ }
+ break;
+ case DST_ALG_RSASHA256:
+ /* From RFC 5702 */
+ if ((key->key_size < 512) || (key->key_size > 4096)) {
+ return (ISC_R_FAILURE);
+ }
+ break;
+ case DST_ALG_RSASHA512:
+ /* From RFC 5702 */
+ if ((key->key_size < 1024) || (key->key_size > 4096)) {
+ return (ISC_R_FAILURE);
+ }
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ pk11_ctx = isc_mem_get(key->mctx, sizeof(*pk11_ctx));
+ ret = pk11_get_session(pk11_ctx, OP_RSA, true, false, false, NULL,
+ pk11_get_best_token(OP_RSA));
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ bits = key->key_size;
+ if (exp == 0) {
+ /* RSA_F4 0x10001 */
+ pubexp[0] = 1;
+ pubexp[1] = 0;
+ pubexp[2] = 1;
+ pubTemplate[6].ulValueLen = 3;
+ } else {
+ /* F5 0x100000001 */
+ pubexp[0] = 1;
+ pubexp[1] = 0;
+ pubexp[2] = 0;
+ pubexp[3] = 0;
+ pubexp[4] = 1;
+ pubTemplate[6].ulValueLen = 5;
+ }
+
+ PK11_RET(pkcs_C_GenerateKeyPair,
+ (pk11_ctx->session, &mech, pubTemplate, (CK_ULONG)7,
+ privTemplate, (CK_ULONG)7, &pub, &priv),
+ DST_R_CRYPTOFAILURE);
+
+ rsa = isc_mem_get(key->mctx, sizeof(*rsa));
+ memset(rsa, 0, sizeof(*rsa));
+ key->keydata.pkey = rsa;
+ rsa->repr = isc_mem_get(key->mctx, sizeof(*attr) * 8);
+ memset(rsa->repr, 0, sizeof(*attr) * 8);
+ rsa->attrcnt = 8;
+
+ attr = rsa->repr;
+ attr[0].type = CKA_MODULUS;
+ attr[1].type = CKA_PUBLIC_EXPONENT;
+ attr[2].type = CKA_PRIVATE_EXPONENT;
+ attr[3].type = CKA_PRIME_1;
+ attr[4].type = CKA_PRIME_2;
+ attr[5].type = CKA_EXPONENT_1;
+ attr[6].type = CKA_EXPONENT_2;
+ attr[7].type = CKA_COEFFICIENT;
+
+ PK11_RET(pkcs_C_GetAttributeValue, (pk11_ctx->session, pub, attr, 2),
+ DST_R_CRYPTOFAILURE);
+ for (i = 0; i <= 1; i++) {
+ attr[i].pValue = isc_mem_get(key->mctx, attr[i].ulValueLen);
+ memset(attr[i].pValue, 0, attr[i].ulValueLen);
+ }
+ PK11_RET(pkcs_C_GetAttributeValue, (pk11_ctx->session, pub, attr, 2),
+ DST_R_CRYPTOFAILURE);
+
+ attr += 2;
+ PK11_RET(pkcs_C_GetAttributeValue, (pk11_ctx->session, priv, attr, 6),
+ DST_R_CRYPTOFAILURE);
+ for (i = 0; i <= 5; i++) {
+ attr[i].pValue = isc_mem_get(key->mctx, attr[i].ulValueLen);
+ memset(attr[i].pValue, 0, attr[i].ulValueLen);
+ }
+ PK11_RET(pkcs_C_GetAttributeValue, (pk11_ctx->session, priv, attr, 6),
+ DST_R_CRYPTOFAILURE);
+
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, priv);
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, pub);
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
+
+ return (ISC_R_SUCCESS);
+
+err:
+ pkcs11rsa_destroy(key);
+ if (priv != CK_INVALID_HANDLE) {
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, priv);
+ }
+ if (pub != CK_INVALID_HANDLE) {
+ (void)pkcs_C_DestroyObject(pk11_ctx->session, pub);
+ }
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
+
+ return (ret);
+}
+
+static bool
+pkcs11rsa_isprivate(const dst_key_t *key) {
+ pk11_object_t *rsa = key->keydata.pkey;
+ CK_ATTRIBUTE *attr;
+
+ if (rsa == NULL) {
+ return (false);
+ }
+ attr = pk11_attribute_bytype(rsa, CKA_PRIVATE_EXPONENT);
+ return (attr != NULL || rsa->ontoken);
+}
+
+static void
+pkcs11rsa_destroy(dst_key_t *key) {
+ pk11_object_t *rsa = key->keydata.pkey;
+ CK_ATTRIBUTE *attr;
+
+ if (rsa == NULL) {
+ return;
+ }
+
+ INSIST((rsa->object == CK_INVALID_HANDLE) || rsa->ontoken);
+
+ for (attr = pk11_attribute_first(rsa); attr != NULL;
+ attr = pk11_attribute_next(rsa, attr))
+ {
+ switch (attr->type) {
+ case CKA_LABEL:
+ case CKA_ID:
+ case CKA_MODULUS:
+ case CKA_PUBLIC_EXPONENT:
+ case CKA_PRIVATE_EXPONENT:
+ case CKA_PRIME_1:
+ case CKA_PRIME_2:
+ case CKA_EXPONENT_1:
+ case CKA_EXPONENT_2:
+ case CKA_COEFFICIENT:
+ if (attr->pValue != NULL) {
+ isc_safe_memwipe(attr->pValue,
+ attr->ulValueLen);
+ isc_mem_put(key->mctx, attr->pValue,
+ attr->ulValueLen);
+ }
+ break;
+ }
+ }
+ if (rsa->repr != NULL) {
+ isc_safe_memwipe(rsa->repr, rsa->attrcnt * sizeof(*attr));
+ isc_mem_put(key->mctx, rsa->repr, rsa->attrcnt * sizeof(*attr));
+ }
+ isc_safe_memwipe(rsa, sizeof(*rsa));
+ isc_mem_put(key->mctx, rsa, sizeof(*rsa));
+ key->keydata.pkey = NULL;
+}
+
+static isc_result_t
+pkcs11rsa_todns(const dst_key_t *key, isc_buffer_t *data) {
+ pk11_object_t *rsa;
+ CK_ATTRIBUTE *attr;
+ isc_region_t r;
+ unsigned int e_bytes = 0, mod_bytes = 0;
+ CK_BYTE *exponent = NULL, *modulus = NULL;
+
+ REQUIRE(key->keydata.pkey != NULL);
+
+ rsa = key->keydata.pkey;
+
+ for (attr = pk11_attribute_first(rsa); attr != NULL;
+ attr = pk11_attribute_next(rsa, attr))
+ {
+ switch (attr->type) {
+ case CKA_PUBLIC_EXPONENT:
+ exponent = (CK_BYTE *)attr->pValue;
+ e_bytes = (unsigned int)attr->ulValueLen;
+ break;
+ case CKA_MODULUS:
+ modulus = (CK_BYTE *)attr->pValue;
+ mod_bytes = (unsigned int)attr->ulValueLen;
+ break;
+ }
+ }
+ REQUIRE((exponent != NULL) && (modulus != NULL));
+
+ isc_buffer_availableregion(data, &r);
+
+ if (e_bytes < 256) { /*%< key exponent is <= 2040 bits */
+ if (r.length < 1) {
+ return (ISC_R_NOSPACE);
+ }
+ isc_buffer_putuint8(data, (uint8_t)e_bytes);
+ isc_region_consume(&r, 1);
+ } else {
+ if (r.length < 3) {
+ return (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) {
+ return (ISC_R_NOSPACE);
+ }
+
+ memmove(r.base, exponent, e_bytes);
+ isc_region_consume(&r, e_bytes);
+ memmove(r.base, modulus, mod_bytes);
+
+ isc_buffer_add(data, e_bytes + mod_bytes);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+pkcs11rsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
+ pk11_object_t *rsa;
+ isc_region_t r;
+ unsigned int e_bytes, mod_bytes;
+ CK_BYTE *exponent = NULL, *modulus = NULL;
+ CK_ATTRIBUTE *attr;
+ unsigned int length;
+ unsigned int bits;
+ isc_result_t ret = ISC_R_SUCCESS;
+
+ isc_buffer_remainingregion(data, &r);
+ if (r.length == 0) {
+ return (ISC_R_SUCCESS);
+ }
+ length = r.length;
+
+ rsa = isc_mem_get(key->mctx, sizeof(*rsa));
+
+ memset(rsa, 0, sizeof(*rsa));
+
+ e_bytes = *r.base;
+ isc_region_consume(&r, 1);
+
+ if (e_bytes == 0) {
+ if (r.length < 2) {
+ DST_RET(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) {
+ DST_RET(DST_R_INVALIDPUBLICKEY);
+ }
+ exponent = r.base;
+ isc_region_consume(&r, e_bytes);
+ modulus = r.base;
+ mod_bytes = r.length;
+
+ ret = pk11_numbits(modulus, mod_bytes, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
+
+ isc_buffer_forward(data, length);
+
+ rsa->repr = isc_mem_get(key->mctx, sizeof(*attr) * 2);
+ memset(rsa->repr, 0, sizeof(*attr) * 2);
+ rsa->attrcnt = 2;
+ attr = rsa->repr;
+ attr[0].type = CKA_MODULUS;
+ attr[0].pValue = isc_mem_get(key->mctx, mod_bytes);
+ memmove(attr[0].pValue, modulus, mod_bytes);
+ attr[0].ulValueLen = (CK_ULONG)mod_bytes;
+ attr[1].type = CKA_PUBLIC_EXPONENT;
+ attr[1].pValue = isc_mem_get(key->mctx, e_bytes);
+ memmove(attr[1].pValue, exponent, e_bytes);
+ attr[1].ulValueLen = (CK_ULONG)e_bytes;
+
+ key->keydata.pkey = rsa;
+
+ return (ISC_R_SUCCESS);
+err:
+ isc_safe_memwipe(rsa, sizeof(*rsa));
+ isc_mem_put(key->mctx, rsa, sizeof(*rsa));
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_tofile(const dst_key_t *key, const char *directory) {
+ int i;
+ pk11_object_t *rsa;
+ CK_ATTRIBUTE *attr;
+ CK_ATTRIBUTE *modulus = NULL, *exponent = NULL;
+ CK_ATTRIBUTE *d = NULL, *p = NULL, *q = NULL;
+ CK_ATTRIBUTE *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL;
+ dst_private_t priv;
+ unsigned char *bufs[10];
+ isc_result_t result;
+
+ if (key->keydata.pkey == NULL) {
+ return (DST_R_NULLKEY);
+ }
+
+ if (key->external) {
+ priv.nelements = 0;
+ return (dst__privstruct_writefile(key, &priv, directory));
+ }
+
+ rsa = key->keydata.pkey;
+
+ for (attr = pk11_attribute_first(rsa); attr != NULL;
+ attr = pk11_attribute_next(rsa, attr))
+ {
+ switch (attr->type) {
+ case CKA_MODULUS:
+ modulus = attr;
+ break;
+ case CKA_PUBLIC_EXPONENT:
+ exponent = attr;
+ break;
+ case CKA_PRIVATE_EXPONENT:
+ d = attr;
+ break;
+ case CKA_PRIME_1:
+ p = attr;
+ break;
+ case CKA_PRIME_2:
+ q = attr;
+ break;
+ case CKA_EXPONENT_1:
+ dmp1 = attr;
+ break;
+ case CKA_EXPONENT_2:
+ dmq1 = attr;
+ break;
+ case CKA_COEFFICIENT:
+ iqmp = attr;
+ break;
+ }
+ }
+ if ((modulus == NULL) || (exponent == NULL)) {
+ return (DST_R_NULLKEY);
+ }
+
+ memset(bufs, 0, sizeof(bufs));
+
+ for (i = 0; i < 10; i++) {
+ bufs[i] = isc_mem_get(key->mctx, modulus->ulValueLen);
+ memset(bufs[i], 0, modulus->ulValueLen);
+ }
+
+ i = 0;
+
+ priv.elements[i].tag = TAG_RSA_MODULUS;
+ priv.elements[i].length = (unsigned short)modulus->ulValueLen;
+ memmove(bufs[i], modulus->pValue, modulus->ulValueLen);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ priv.elements[i].tag = TAG_RSA_PUBLICEXPONENT;
+ priv.elements[i].length = (unsigned short)exponent->ulValueLen;
+ memmove(bufs[i], exponent->pValue, exponent->ulValueLen);
+ priv.elements[i].data = bufs[i];
+ i++;
+
+ if (d != NULL) {
+ priv.elements[i].tag = TAG_RSA_PRIVATEEXPONENT;
+ priv.elements[i].length = (unsigned short)d->ulValueLen;
+ memmove(bufs[i], d->pValue, d->ulValueLen);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (p != NULL) {
+ priv.elements[i].tag = TAG_RSA_PRIME1;
+ priv.elements[i].length = (unsigned short)p->ulValueLen;
+ memmove(bufs[i], p->pValue, p->ulValueLen);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (q != NULL) {
+ priv.elements[i].tag = TAG_RSA_PRIME2;
+ priv.elements[i].length = (unsigned short)q->ulValueLen;
+ memmove(bufs[i], q->pValue, q->ulValueLen);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (dmp1 != NULL) {
+ priv.elements[i].tag = TAG_RSA_EXPONENT1;
+ priv.elements[i].length = (unsigned short)dmp1->ulValueLen;
+ memmove(bufs[i], dmp1->pValue, dmp1->ulValueLen);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (dmq1 != NULL) {
+ priv.elements[i].tag = TAG_RSA_EXPONENT2;
+ priv.elements[i].length = (unsigned short)dmq1->ulValueLen;
+ memmove(bufs[i], dmq1->pValue, dmq1->ulValueLen);
+ priv.elements[i].data = bufs[i];
+ i++;
+ }
+
+ if (iqmp != NULL) {
+ priv.elements[i].tag = TAG_RSA_COEFFICIENT;
+ priv.elements[i].length = (unsigned short)iqmp->ulValueLen;
+ memmove(bufs[i], iqmp->pValue, iqmp->ulValueLen);
+ 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);
+ for (i = 0; i < 10; i++) {
+ if (bufs[i] == NULL) {
+ break;
+ }
+ isc_safe_memwipe(bufs[i], modulus->ulValueLen);
+ isc_mem_put(key->mctx, bufs[i], modulus->ulValueLen);
+ }
+ return (result);
+}
+
+static isc_result_t
+pkcs11rsa_fetch(dst_key_t *key, const char *engine, const char *label,
+ dst_key_t *pub) {
+ CK_RV rv;
+ CK_OBJECT_CLASS keyClass = CKO_PRIVATE_KEY;
+ CK_KEY_TYPE keyType = CKK_RSA;
+ CK_ATTRIBUTE searchTemplate[] = {
+ { CKA_CLASS, &keyClass, (CK_ULONG)sizeof(keyClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_LABEL, NULL, 0 }
+ };
+ CK_ULONG cnt;
+ CK_ATTRIBUTE *attr;
+ CK_ATTRIBUTE *pubattr;
+ pk11_object_t *rsa;
+ pk11_object_t *pubrsa;
+ pk11_context_t *pk11_ctx = NULL;
+ isc_result_t ret;
+ unsigned int bits;
+
+ if (label == NULL) {
+ return (DST_R_NOENGINE);
+ }
+
+ rsa = key->keydata.pkey;
+ pubrsa = pub->keydata.pkey;
+
+ rsa->object = CK_INVALID_HANDLE;
+ rsa->ontoken = true;
+ rsa->reqlogon = true;
+ rsa->repr = isc_mem_get(key->mctx, sizeof(*attr) * 2);
+ memset(rsa->repr, 0, sizeof(*attr) * 2);
+ rsa->attrcnt = 2;
+ attr = rsa->repr;
+
+ attr->type = CKA_MODULUS;
+ pubattr = pk11_attribute_bytype(pubrsa, CKA_MODULUS);
+ INSIST(pubattr != NULL);
+ attr->pValue = isc_mem_get(key->mctx, pubattr->ulValueLen);
+ memmove(attr->pValue, pubattr->pValue, pubattr->ulValueLen);
+ attr->ulValueLen = pubattr->ulValueLen;
+ attr++;
+
+ attr->type = CKA_PUBLIC_EXPONENT;
+ pubattr = pk11_attribute_bytype(pubrsa, CKA_PUBLIC_EXPONENT);
+ INSIST(pubattr != NULL);
+ attr->pValue = isc_mem_get(key->mctx, pubattr->ulValueLen);
+ memmove(attr->pValue, pubattr->pValue, pubattr->ulValueLen);
+ attr->ulValueLen = pubattr->ulValueLen;
+
+ ret = pk11_parse_uri(rsa, label, key->mctx, OP_RSA);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ pk11_ctx = isc_mem_get(key->mctx, sizeof(*pk11_ctx));
+ ret = pk11_get_session(pk11_ctx, OP_RSA, true, false, rsa->reqlogon,
+ NULL, rsa->slot);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ attr = pk11_attribute_bytype(rsa, CKA_LABEL);
+ if (attr == NULL) {
+ attr = pk11_attribute_bytype(rsa, CKA_ID);
+ INSIST(attr != NULL);
+ searchTemplate[3].type = CKA_ID;
+ }
+ searchTemplate[3].pValue = attr->pValue;
+ searchTemplate[3].ulValueLen = attr->ulValueLen;
+
+ PK11_RET(pkcs_C_FindObjectsInit,
+ (pk11_ctx->session, searchTemplate, (CK_ULONG)4),
+ DST_R_CRYPTOFAILURE);
+ PK11_RET(pkcs_C_FindObjects,
+ (pk11_ctx->session, &rsa->object, (CK_ULONG)1, &cnt),
+ DST_R_CRYPTOFAILURE);
+ (void)pkcs_C_FindObjectsFinal(pk11_ctx->session);
+ if (cnt == 0) {
+ DST_RET(ISC_R_NOTFOUND);
+ }
+ if (cnt > 1) {
+ DST_RET(ISC_R_EXISTS);
+ }
+
+ if (engine != NULL) {
+ key->engine = isc_mem_strdup(key->mctx, engine);
+ }
+
+ key->label = isc_mem_strdup(key->mctx, label);
+
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
+
+ attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
+ INSIST(attr != NULL);
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
+
+ return (ISC_R_SUCCESS);
+
+err:
+ if (pk11_ctx != NULL) {
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
+ }
+
+ return (ret);
+}
+
+static isc_result_t
+rsa_check(pk11_object_t *rsa, pk11_object_t *pubrsa) {
+ CK_ATTRIBUTE *pubattr, *privattr;
+ CK_BYTE *priv_exp = NULL, *priv_mod = NULL;
+ CK_BYTE *pub_exp = NULL, *pub_mod = NULL;
+ unsigned int priv_explen = 0, priv_modlen = 0;
+ unsigned int pub_explen = 0, pub_modlen = 0;
+
+ REQUIRE(rsa != NULL && pubrsa != NULL);
+
+ privattr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
+ INSIST(privattr != NULL);
+ priv_exp = privattr->pValue;
+ priv_explen = privattr->ulValueLen;
+
+ pubattr = pk11_attribute_bytype(pubrsa, CKA_PUBLIC_EXPONENT);
+ INSIST(pubattr != NULL);
+ pub_exp = pubattr->pValue;
+ pub_explen = pubattr->ulValueLen;
+
+ if (priv_exp != NULL) {
+ if (priv_explen != pub_explen) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+ if (!isc_safe_memequal(priv_exp, pub_exp, pub_explen)) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+ } else {
+ privattr->pValue = pub_exp;
+ privattr->ulValueLen = pub_explen;
+ pubattr->pValue = NULL;
+ pubattr->ulValueLen = 0;
+ }
+
+ if (privattr->pValue == NULL) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+
+ privattr = pk11_attribute_bytype(rsa, CKA_MODULUS);
+ INSIST(privattr != NULL);
+ priv_mod = privattr->pValue;
+ priv_modlen = privattr->ulValueLen;
+
+ pubattr = pk11_attribute_bytype(pubrsa, CKA_MODULUS);
+ INSIST(pubattr != NULL);
+ pub_mod = pubattr->pValue;
+ pub_modlen = pubattr->ulValueLen;
+
+ if (priv_mod != NULL) {
+ if (priv_modlen != pub_modlen) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+ if (!isc_safe_memequal(priv_mod, pub_mod, pub_modlen)) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+ } else {
+ privattr->pValue = pub_mod;
+ privattr->ulValueLen = pub_modlen;
+ pubattr->pValue = NULL;
+ pubattr->ulValueLen = 0;
+ }
+
+ if (privattr->pValue == NULL) {
+ return (DST_R_INVALIDPRIVATEKEY);
+ }
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+pkcs11rsa_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
+ dst_private_t priv;
+ isc_result_t ret;
+ int i;
+ pk11_object_t *rsa;
+ CK_ATTRIBUTE *attr;
+ isc_mem_t *mctx = key->mctx;
+ const char *engine = NULL, *label = NULL;
+ unsigned int bits;
+
+ /* read private key file */
+ ret = dst__privstruct_parse(key, DST_ALG_RSA, lexer, mctx, &priv);
+ if (ret != ISC_R_SUCCESS) {
+ return (ret);
+ }
+
+ 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);
+ }
+
+ 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;
+ }
+ }
+ rsa = isc_mem_get(key->mctx, sizeof(*rsa));
+ memset(rsa, 0, sizeof(*rsa));
+ key->keydata.pkey = rsa;
+
+ /* Is this key is stored in a HSM? See if we can fetch it. */
+ if ((label != NULL) || (engine != NULL)) {
+ ret = pkcs11rsa_fetch(key, engine, label, pub);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (ret);
+ }
+
+ rsa->repr = isc_mem_get(key->mctx, sizeof(*attr) * 8);
+ memset(rsa->repr, 0, sizeof(*attr) * 8);
+ rsa->attrcnt = 8;
+ attr = rsa->repr;
+ attr[0].type = CKA_MODULUS;
+ attr[1].type = CKA_PUBLIC_EXPONENT;
+ attr[2].type = CKA_PRIVATE_EXPONENT;
+ attr[3].type = CKA_PRIME_1;
+ attr[4].type = CKA_PRIME_2;
+ attr[5].type = CKA_EXPONENT_1;
+ attr[6].type = CKA_EXPONENT_2;
+ attr[7].type = CKA_COEFFICIENT;
+
+ for (i = 0; i < priv.nelements; i++) {
+ CK_BYTE *bn;
+
+ switch (priv.elements[i].tag) {
+ case TAG_RSA_ENGINE:
+ continue;
+ case TAG_RSA_LABEL:
+ continue;
+ default:
+ bn = isc_mem_get(key->mctx, priv.elements[i].length);
+ memmove(bn, priv.elements[i].data,
+ priv.elements[i].length);
+ }
+
+ switch (priv.elements[i].tag) {
+ case TAG_RSA_MODULUS:
+ attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ case TAG_RSA_PUBLICEXPONENT:
+ attr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ case TAG_RSA_PRIVATEEXPONENT:
+ attr = pk11_attribute_bytype(rsa, CKA_PRIVATE_EXPONENT);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ case TAG_RSA_PRIME1:
+ attr = pk11_attribute_bytype(rsa, CKA_PRIME_1);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ case TAG_RSA_PRIME2:
+ attr = pk11_attribute_bytype(rsa, CKA_PRIME_2);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ case TAG_RSA_EXPONENT1:
+ attr = pk11_attribute_bytype(rsa, CKA_EXPONENT_1);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ case TAG_RSA_EXPONENT2:
+ attr = pk11_attribute_bytype(rsa, CKA_EXPONENT_2);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ case TAG_RSA_COEFFICIENT:
+ attr = pk11_attribute_bytype(rsa, CKA_COEFFICIENT);
+ INSIST(attr != NULL);
+ attr->pValue = bn;
+ attr->ulValueLen = priv.elements[i].length;
+ break;
+ }
+ }
+
+ if (rsa_check(rsa, pub->keydata.pkey) != ISC_R_SUCCESS) {
+ DST_RET(DST_R_INVALIDPRIVATEKEY);
+ }
+
+ attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
+ INSIST(attr != NULL);
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
+
+ attr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
+ INSIST(attr != NULL);
+
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ if (bits > RSA_MAX_PUBEXP_BITS) {
+ DST_RET(ISC_R_RANGE);
+ }
+
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+
+ return (ISC_R_SUCCESS);
+
+err:
+ pkcs11rsa_destroy(key);
+ dst__privstruct_free(&priv, mctx);
+ isc_safe_memwipe(&priv, sizeof(priv));
+ return (ret);
+}
+
+static isc_result_t
+pkcs11rsa_fromlabel(dst_key_t *key, const char *engine, const char *label,
+ const char *pin) {
+ CK_RV rv;
+ CK_OBJECT_HANDLE hKey = CK_INVALID_HANDLE;
+ CK_OBJECT_CLASS keyClass = CKO_PUBLIC_KEY;
+ CK_KEY_TYPE keyType = CKK_RSA;
+ CK_ATTRIBUTE searchTemplate[] = {
+ { CKA_CLASS, &keyClass, (CK_ULONG)sizeof(keyClass) },
+ { CKA_KEY_TYPE, &keyType, (CK_ULONG)sizeof(keyType) },
+ { CKA_TOKEN, &truevalue, (CK_ULONG)sizeof(truevalue) },
+ { CKA_LABEL, NULL, 0 }
+ };
+ CK_ULONG cnt;
+ CK_ATTRIBUTE *attr;
+ pk11_object_t *rsa;
+ pk11_context_t *pk11_ctx = NULL;
+ isc_result_t ret;
+ unsigned int i;
+ unsigned int bits;
+
+ UNUSED(pin);
+
+ rsa = isc_mem_get(key->mctx, sizeof(*rsa));
+ memset(rsa, 0, sizeof(*rsa));
+ rsa->object = CK_INVALID_HANDLE;
+ rsa->ontoken = true;
+ rsa->reqlogon = true;
+ key->keydata.pkey = rsa;
+
+ rsa->repr = isc_mem_get(key->mctx, sizeof(*attr) * 2);
+ memset(rsa->repr, 0, sizeof(*attr) * 2);
+ rsa->attrcnt = 2;
+ attr = rsa->repr;
+ attr[0].type = CKA_MODULUS;
+ attr[1].type = CKA_PUBLIC_EXPONENT;
+
+ ret = pk11_parse_uri(rsa, label, key->mctx, OP_RSA);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ pk11_ctx = isc_mem_get(key->mctx, sizeof(*pk11_ctx));
+ ret = pk11_get_session(pk11_ctx, OP_RSA, true, false, rsa->reqlogon,
+ NULL, rsa->slot);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+
+ attr = pk11_attribute_bytype(rsa, CKA_LABEL);
+ if (attr == NULL) {
+ attr = pk11_attribute_bytype(rsa, CKA_ID);
+ INSIST(attr != NULL);
+ searchTemplate[3].type = CKA_ID;
+ }
+ searchTemplate[3].pValue = attr->pValue;
+ searchTemplate[3].ulValueLen = attr->ulValueLen;
+
+ PK11_RET(pkcs_C_FindObjectsInit,
+ (pk11_ctx->session, searchTemplate, (CK_ULONG)4),
+ DST_R_CRYPTOFAILURE);
+ PK11_RET(pkcs_C_FindObjects,
+ (pk11_ctx->session, &hKey, (CK_ULONG)1, &cnt),
+ DST_R_CRYPTOFAILURE);
+ (void)pkcs_C_FindObjectsFinal(pk11_ctx->session);
+ if (cnt == 0) {
+ DST_RET(ISC_R_NOTFOUND);
+ }
+ if (cnt > 1) {
+ DST_RET(ISC_R_EXISTS);
+ }
+
+ attr = rsa->repr;
+ PK11_RET(pkcs_C_GetAttributeValue, (pk11_ctx->session, hKey, attr, 2),
+ DST_R_CRYPTOFAILURE);
+ for (i = 0; i <= 1; i++) {
+ attr[i].pValue = isc_mem_get(key->mctx, attr[i].ulValueLen);
+ memset(attr[i].pValue, 0, attr[i].ulValueLen);
+ }
+ PK11_RET(pkcs_C_GetAttributeValue, (pk11_ctx->session, hKey, attr, 2),
+ DST_R_CRYPTOFAILURE);
+
+ keyClass = CKO_PRIVATE_KEY;
+ PK11_RET(pkcs_C_FindObjectsInit,
+ (pk11_ctx->session, searchTemplate, (CK_ULONG)4),
+ DST_R_CRYPTOFAILURE);
+ PK11_RET(pkcs_C_FindObjects,
+ (pk11_ctx->session, &rsa->object, (CK_ULONG)1, &cnt),
+ DST_R_CRYPTOFAILURE);
+ (void)pkcs_C_FindObjectsFinal(pk11_ctx->session);
+ if (cnt == 0) {
+ DST_RET(ISC_R_NOTFOUND);
+ }
+ if (cnt > 1) {
+ DST_RET(ISC_R_EXISTS);
+ }
+
+ if (engine != NULL) {
+ key->engine = isc_mem_strdup(key->mctx, engine);
+ }
+
+ key->label = isc_mem_strdup(key->mctx, label);
+
+ attr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
+ INSIST(attr != NULL);
+
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ if (bits > RSA_MAX_PUBEXP_BITS) {
+ DST_RET(ISC_R_RANGE);
+ }
+
+ attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
+ INSIST(attr != NULL);
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
+
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
+
+ return (ISC_R_SUCCESS);
+
+err:
+ pkcs11rsa_destroy(key);
+ if (pk11_ctx != NULL) {
+ pk11_return_session(pk11_ctx);
+ isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
+ isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
+ }
+
+ return (ret);
+}
+
+static dst_func_t pkcs11rsa_functions = {
+ pkcs11rsa_createctx,
+#ifndef PK11_RSA_PKCS_REPLACE
+ pkcs11rsa_createctx2,
+#else /* ifndef PK11_RSA_PKCS_REPLACE */
+ NULL, /*%< createctx2 */
+#endif /* ifndef PK11_RSA_PKCS_REPLACE */
+ pkcs11rsa_destroyctx,
+ pkcs11rsa_adddata,
+ pkcs11rsa_sign,
+ pkcs11rsa_verify,
+ NULL, /*%< verify2 */
+ NULL, /*%< computesecret */
+ pkcs11rsa_compare,
+ NULL, /*%< paramcompare */
+ pkcs11rsa_generate,
+ pkcs11rsa_isprivate,
+ pkcs11rsa_destroy,
+ pkcs11rsa_todns,
+ pkcs11rsa_fromdns,
+ pkcs11rsa_tofile,
+ pkcs11rsa_parse,
+ NULL, /*%< cleanup */
+ pkcs11rsa_fromlabel,
+ NULL, /*%< dump */
+ NULL, /*%< restore */
+};
+
+isc_result_t
+dst__pkcs11rsa_init(dst_func_t **funcp) {
+ REQUIRE(funcp != NULL);
+
+ if (*funcp == NULL) {
+ *funcp = &pkcs11rsa_functions;
+ }
+ return (ISC_R_SUCCESS);
+}
+
+#endif /* USE_PKCS11 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-30 00:56:01 +0000