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phunix/external/bsd/bind/dist/lib/dns/pkcs11rsa_link.c
David van Moolenbroek 00b67f09dd Import NetBSD named(8) 
Also known as ISC bind.  This import adds utilities such as host(1),
dig(1), and nslookup(1), as well as many other tools and libraries.

Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
2017-03-21 22:00:06 +00:00

1573 lines
42 KiB
C
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/* $NetBSD: pkcs11rsa_link.c,v 1.1.1.5 2015/09/03 07:21:37 christos Exp $ */
/*
* Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC")
*
* 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 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.
*/
/* Id */
#ifdef PKCS11CRYPTO
#include <config.h>
#include <isc/entropy.h>
#include <isc/md5.h>
#include <isc/sha1.h>
#include <isc/sha2.h>
#include <isc/mem.h>
#include <isc/string.h>
#include <isc/util.h>
#include <dst/result.h>
#include "dst_internal.h"
#include "dst_parse.h"
#include "dst_pkcs11.h"
#include <pk11/internal.h>
/*
* Limit the size of public exponents.
*/
#ifndef RSA_MAX_PUBEXP_BITS
#define RSA_MAX_PUBEXP_BITS 35
#endif
#define DST_RET(a) {ret = a; goto err;}
static CK_BBOOL truevalue = TRUE;
static CK_BBOOL falsevalue = FALSE;
static isc_result_t pkcs11rsa_todns(const dst_key_t *key, isc_buffer_t *data);
static void pkcs11rsa_destroy(dst_key_t *key);
static isc_result_t pkcs11rsa_fetch(dst_key_t *key, const char *engine,
const char *label, dst_key_t *pub);
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_RSAMD5 ||
key->key_alg == DST_ALG_RSASHA1 ||
key->key_alg == DST_ALG_NSEC3RSASHA1 ||
key->key_alg == DST_ALG_RSASHA256 ||
key->key_alg == DST_ALG_RSASHA512);
rsa = key->keydata.pkey;
pk11_ctx = (pk11_context_t *) isc_mem_get(dctx->mctx,
sizeof(*pk11_ctx));
if (pk11_ctx == NULL)
return (ISC_R_NOMEMORY);
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, ISC_TRUE, ISC_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);
if (keyTemplate[6].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[7].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[8].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[9].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[10].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[11].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[12].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[13].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
memmove(keyTemplate[13].pValue, attr->pValue,
attr->ulValueLen);
keyTemplate[13].ulValueLen = attr->ulValueLen;
break;
}
pk11_ctx->object = CK_INVALID_HANDLE;
pk11_ctx->ontoken = ISC_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_RSAMD5:
mech.mechanism = CKM_MD5_RSA_PKCS;
break;
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:
INSIST(0);
}
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) {
memset(keyTemplate[i].pValue, 0,
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) {
memset(keyTemplate[i].pValue, 0,
keyTemplate[i].ulValueLen);
isc_mem_put(dctx->mctx,
keyTemplate[i].pValue,
keyTemplate[i].ulValueLen);
}
pk11_return_session(pk11_ctx);
memset(pk11_ctx, 0, 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_RSAMD5 ||
key->key_alg == DST_ALG_RSASHA1 ||
key->key_alg == DST_ALG_NSEC3RSASHA1 ||
key->key_alg == DST_ALG_RSASHA256 ||
key->key_alg == DST_ALG_RSASHA512);
rsa = key->keydata.pkey;
pk11_ctx = (pk11_context_t *) isc_mem_get(dctx->mctx,
sizeof(*pk11_ctx));
if (pk11_ctx == NULL)
return (ISC_R_NOMEMORY);
ret = pk11_get_session(pk11_ctx, OP_RSA, ISC_TRUE, ISC_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))
switch (attr->type) {
case CKA_MODULUS:
INSIST(keyTemplate[5].type == attr->type);
keyTemplate[5].pValue = isc_mem_get(dctx->mctx,
attr->ulValueLen);
if (keyTemplate[5].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (keyTemplate[6].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
memmove(keyTemplate[6].pValue, attr->pValue,
attr->ulValueLen);
keyTemplate[6].ulValueLen = attr->ulValueLen;
if (pk11_numbits(attr->pValue,
attr->ulValueLen) > maxbits &&
maxbits != 0)
DST_RET(DST_R_VERIFYFAILURE);
break;
}
pk11_ctx->object = CK_INVALID_HANDLE;
pk11_ctx->ontoken = ISC_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_RSAMD5:
mech.mechanism = CKM_MD5_RSA_PKCS;
break;
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:
INSIST(0);
}
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) {
memset(keyTemplate[i].pValue, 0,
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) {
memset(keyTemplate[i].pValue, 0,
keyTemplate[i].ulValueLen);
isc_mem_put(dctx->mctx,
keyTemplate[i].pValue,
keyTemplate[i].ulValueLen);
}
pk11_return_session(pk11_ctx);
memset(pk11_ctx, 0, 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);
memset(pk11_ctx, 0, 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);
}
static isc_boolean_t
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 (ISC_TRUE);
else if ((rsa1 == NULL) || (rsa2 == NULL))
return (ISC_FALSE);
attr1 = pk11_attribute_bytype(rsa1, CKA_MODULUS);
attr2 = pk11_attribute_bytype(rsa2, CKA_MODULUS);
if ((attr1 == NULL) && (attr2 == NULL))
return (ISC_TRUE);
else if ((attr1 == NULL) || (attr2 == NULL) ||
(attr1->ulValueLen != attr2->ulValueLen) ||
memcmp(attr1->pValue, attr2->pValue, attr1->ulValueLen))
return (ISC_FALSE);
attr1 = pk11_attribute_bytype(rsa1, CKA_PUBLIC_EXPONENT);
attr2 = pk11_attribute_bytype(rsa2, CKA_PUBLIC_EXPONENT);
if ((attr1 == NULL) && (attr2 == NULL))
return (ISC_TRUE);
else if ((attr1 == NULL) || (attr2 == NULL) ||
(attr1->ulValueLen != attr2->ulValueLen) ||
memcmp(attr1->pValue, attr2->pValue, attr1->ulValueLen))
return (ISC_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) ||
memcmp(attr1->pValue, attr2->pValue, attr1->ulValueLen)))
return (ISC_FALSE);
if (!rsa1->ontoken && !rsa2->ontoken)
return (ISC_TRUE);
else if (rsa1->ontoken || rsa2->ontoken ||
(rsa1->object != rsa2->object))
return (ISC_FALSE);
return (ISC_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);
pk11_ctx = (pk11_context_t *) isc_mem_get(key->mctx,
sizeof(*pk11_ctx));
if (pk11_ctx == NULL)
return (ISC_R_NOMEMORY);
ret = pk11_get_session(pk11_ctx, OP_RSA, ISC_TRUE, ISC_FALSE,
ISC_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 = (pk11_object_t *) isc_mem_get(key->mctx, sizeof(*rsa));
if (rsa == NULL)
DST_RET(ISC_R_NOMEMORY);
memset(rsa, 0, sizeof(*rsa));
key->keydata.pkey = rsa;
rsa->repr = (CK_ATTRIBUTE *) isc_mem_get(key->mctx, sizeof(*attr) * 8);
if (rsa->repr == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (attr[i].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (attr[i].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
memset(pk11_ctx, 0, 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);
memset(pk11_ctx, 0, sizeof(*pk11_ctx));
isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
return (ret);
}
static isc_boolean_t
pkcs11rsa_isprivate(const dst_key_t *key) {
pk11_object_t *rsa = key->keydata.pkey;
CK_ATTRIBUTE *attr;
if (rsa == NULL)
return (ISC_FALSE);
attr = pk11_attribute_bytype(rsa, CKA_PRIVATE_EXPONENT);
return (ISC_TF((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) {
memset(attr->pValue, 0, attr->ulValueLen);
isc_mem_put(key->mctx,
attr->pValue,
attr->ulValueLen);
}
break;
}
if (rsa->repr != NULL) {
memset(rsa->repr, 0, rsa->attrcnt * sizeof(*attr));
isc_mem_put(key->mctx,
rsa->repr,
rsa->attrcnt * sizeof(*attr));
}
memset(rsa, 0, 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, (isc_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, (isc_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;
isc_buffer_remainingregion(data, &r);
if (r.length == 0)
return (ISC_R_SUCCESS);
length = r.length;
rsa = (pk11_object_t *) isc_mem_get(key->mctx, sizeof(*rsa));
if (rsa == NULL)
return (ISC_R_NOMEMORY);
memset(rsa, 0, sizeof(*rsa));
e_bytes = *r.base;
isc_region_consume(&r, 1);
if (e_bytes == 0) {
if (r.length < 2) {
memset(rsa, 0, sizeof(*rsa));
isc_mem_put(key->mctx, rsa, sizeof(*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) {
memset(rsa, 0, sizeof(*rsa));
isc_mem_put(key->mctx, rsa, sizeof(*rsa));
return (DST_R_INVALIDPUBLICKEY);
}
exponent = r.base;
isc_region_consume(&r, e_bytes);
modulus = r.base;
mod_bytes = r.length;
key->key_size = pk11_numbits(modulus, mod_bytes);
isc_buffer_forward(data, length);
rsa->repr = (CK_ATTRIBUTE *) isc_mem_get(key->mctx, sizeof(*attr) * 2);
if (rsa->repr == NULL)
goto nomemory;
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);
if (attr[0].pValue == NULL)
goto nomemory;
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);
if (attr[1].pValue == NULL)
goto nomemory;
memmove(attr[1].pValue, exponent, e_bytes);
attr[1].ulValueLen = (CK_ULONG) e_bytes;
key->keydata.pkey = rsa;
return (ISC_R_SUCCESS);
nomemory:
for (attr = pk11_attribute_first(rsa);
attr != NULL;
attr = pk11_attribute_next(rsa, attr))
switch (attr->type) {
case CKA_MODULUS:
case CKA_PUBLIC_EXPONENT:
if (attr->pValue != NULL) {
memset(attr->pValue, 0, attr->ulValueLen);
isc_mem_put(key->mctx,
attr->pValue,
attr->ulValueLen);
}
break;
}
if (rsa->repr != NULL) {
memset(rsa->repr, 0, rsa->attrcnt * sizeof(*attr));
isc_mem_put(key->mctx,
rsa->repr,
rsa->attrcnt * sizeof(*attr));
}
memset(rsa, 0, sizeof(*rsa));
isc_mem_put(key->mctx, rsa, sizeof(*rsa));
return (ISC_R_NOMEMORY);
}
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);
if (bufs[i] == NULL) {
result = ISC_R_NOMEMORY;
goto fail;
}
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 = 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 = strlen(key->label) + 1;
priv.elements[i].data = (unsigned char *)key->label;
i++;
}
priv.nelements = i;
result = dst__privstruct_writefile(key, &priv, directory);
fail:
for (i = 0; i < 10; i++) {
if (bufs[i] == NULL)
break;
memset(bufs[i], 0, 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;
if (label == NULL)
return (DST_R_NOENGINE);
rsa = key->keydata.pkey;
pubrsa = pub->keydata.pkey;
rsa->object = CK_INVALID_HANDLE;
rsa->ontoken = ISC_TRUE;
rsa->reqlogon = ISC_TRUE;
rsa->repr = (CK_ATTRIBUTE *) isc_mem_get(key->mctx, sizeof(*attr) * 2);
if (rsa->repr == NULL)
return (ISC_R_NOMEMORY);
memset(rsa->repr, 0, sizeof(*attr) * 2);
rsa->attrcnt = 2;
attr = rsa->repr;
attr->type = CKA_MODULUS;
pubattr = pk11_attribute_bytype(pubrsa, CKA_MODULUS);
attr->pValue = isc_mem_get(key->mctx, pubattr->ulValueLen);
if (attr->pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
attr->pValue = isc_mem_get(key->mctx, pubattr->ulValueLen);
if (attr->pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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 = (pk11_context_t *) isc_mem_get(key->mctx,
sizeof(*pk11_ctx));
if (pk11_ctx == NULL)
DST_RET(ISC_R_NOMEMORY);
ret = pk11_get_session(pk11_ctx, OP_RSA, ISC_TRUE, ISC_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);
if (key->engine == NULL)
DST_RET(ISC_R_NOMEMORY);
}
key->label = isc_mem_strdup(key->mctx, label);
if (key->label == NULL)
DST_RET(ISC_R_NOMEMORY);
pk11_return_session(pk11_ctx);
memset(pk11_ctx, 0, sizeof(*pk11_ctx));
isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
INSIST(attr != NULL);
key->key_size = pk11_numbits(attr->pValue, attr->ulValueLen);
return (ISC_R_SUCCESS);
err:
if (pk11_ctx != NULL) {
pk11_return_session(pk11_ctx);
memset(pk11_ctx, 0, 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 (memcmp(priv_exp, pub_exp, pub_explen) != 0)
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 (memcmp(priv_mod, pub_mod, pub_modlen) != 0)
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;
/* 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);
memset(&priv, 0, 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 = (pk11_object_t *) isc_mem_get(key->mctx, sizeof(*rsa));
if (rsa == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
memset(&priv, 0, sizeof(priv));
return (ret);
}
rsa->repr = (CK_ATTRIBUTE *) isc_mem_get(key->mctx, sizeof(*attr) * 8);
if (rsa->repr == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (bn == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
key->key_size = pk11_numbits(attr->pValue, attr->ulValueLen);
attr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
INSIST(attr != NULL);
if (pk11_numbits(attr->pValue, attr->ulValueLen) > RSA_MAX_PUBEXP_BITS)
DST_RET(ISC_R_RANGE);
dst__privstruct_free(&priv, mctx);
memset(&priv, 0, sizeof(priv));
return (ISC_R_SUCCESS);
err:
pkcs11rsa_destroy(key);
dst__privstruct_free(&priv, mctx);
memset(&priv, 0, 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;
UNUSED(pin);
rsa = (pk11_object_t *) isc_mem_get(key->mctx, sizeof(*rsa));
if (rsa == NULL)
return (ISC_R_NOMEMORY);
memset(rsa, 0, sizeof(*rsa));
rsa->object = CK_INVALID_HANDLE;
rsa->ontoken = ISC_TRUE;
rsa->reqlogon = ISC_TRUE;
key->keydata.pkey = rsa;
rsa->repr = (CK_ATTRIBUTE *) isc_mem_get(key->mctx, sizeof(*attr) * 2);
if (rsa->repr == NULL)
DST_RET(ISC_R_NOMEMORY);
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 = (pk11_context_t *) isc_mem_get(key->mctx,
sizeof(*pk11_ctx));
if (pk11_ctx == NULL)
DST_RET(ISC_R_NOMEMORY);
ret = pk11_get_session(pk11_ctx, OP_RSA, ISC_TRUE, ISC_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);
if (attr[i].pValue == NULL)
DST_RET(ISC_R_NOMEMORY);
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);
if (key->engine == NULL)
DST_RET(ISC_R_NOMEMORY);
}
key->label = isc_mem_strdup(key->mctx, label);
if (key->label == NULL)
DST_RET(ISC_R_NOMEMORY);
attr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
INSIST(attr != NULL);
if (pk11_numbits(attr->pValue, attr->ulValueLen) > RSA_MAX_PUBEXP_BITS)
DST_RET(ISC_R_RANGE);
attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
INSIST(attr != NULL);
key->key_size = pk11_numbits(attr->pValue, attr->ulValueLen);
pk11_return_session(pk11_ctx);
memset(pk11_ctx, 0, 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);
memset(pk11_ctx, 0, sizeof(*pk11_ctx));
isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
}
return (ret);
}
static dst_func_t pkcs11rsa_functions = {
pkcs11rsa_createctx,
pkcs11rsa_createctx2,
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);
}
#else /* PKCS11CRYPTO */
#include <isc/util.h>
EMPTY_TRANSLATION_UNIT
#endif /* PKCS11CRYPTO */
/*! \file */
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