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/* 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
#include "lowkeyi.h"
#include "secoid.h"
#include "secitem.h"
#include "secder.h"
#include "secasn1.h"
#include "secerr.h"
SEC_ASN1_MKSUB(SEC_AnyTemplate)
SEC_ASN1_MKSUB(SEC_BitStringTemplate)
SEC_ASN1_MKSUB(SEC_ObjectIDTemplate)
SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
static const SEC_ASN1Template nsslowkey_AttributeTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSLOWKEYAttribute) },
{ SEC_ASN1_OBJECT_ID, offsetof(NSSLOWKEYAttribute, attrType) },
{ SEC_ASN1_SET_OF | SEC_ASN1_XTRN, offsetof(NSSLOWKEYAttribute, attrValue),
SEC_ASN1_SUB(SEC_AnyTemplate) },
{ 0 }
};
static const SEC_ASN1Template nsslowkey_SetOfAttributeTemplate[] = {
{ SEC_ASN1_SET_OF, 0, nsslowkey_AttributeTemplate },
};
/* ASN1 Templates for new decoder/encoder */
const SEC_ASN1Template lg_nsslowkey_PrivateKeyInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSLOWKEYPrivateKeyInfo) },
{ SEC_ASN1_INTEGER,
offsetof(NSSLOWKEYPrivateKeyInfo, version) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSLOWKEYPrivateKeyInfo, algorithm),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSLOWKEYPrivateKeyInfo, privateKey) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(NSSLOWKEYPrivateKeyInfo, attributes),
nsslowkey_SetOfAttributeTemplate },
{ 0 }
};
const SEC_ASN1Template lg_nsslowkey_PQGParamsTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(PQGParams) },
{ SEC_ASN1_INTEGER, offsetof(PQGParams, prime) },
{ SEC_ASN1_INTEGER, offsetof(PQGParams, subPrime) },
{ SEC_ASN1_INTEGER, offsetof(PQGParams, base) },
{ 0 }
};
const SEC_ASN1Template lg_nsslowkey_RSAPrivateKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.version) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.modulus) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.publicExponent) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.privateExponent) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.prime1) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.prime2) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.exponent1) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.exponent2) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.coefficient) },
{ 0 }
};
/*
* Allows u.rsa.modulus to be zero length for secret keys with an empty
* CKA_ID incorrectly generated in NSS 3.13.3 or earlier. Only used for
*/
const SEC_ASN1Template lg_nsslowkey_RSAPrivateKeyTemplate2[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.version) },
{ SEC_ASN1_ANY, offsetof(NSSLOWKEYPrivateKey, u.rsa.modulus) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.publicExponent) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.privateExponent) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.prime1) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.prime2) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.exponent1) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.exponent2) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.coefficient) },
{ 0 }
};
const SEC_ASN1Template lg_nsslowkey_DSAPrivateKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dsa.publicValue) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dsa.privateValue) },
{ 0 }
};
const SEC_ASN1Template lg_nsslowkey_DHPrivateKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.publicValue) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.privateValue) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.base) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.prime) },
{ 0 }
};
/* NOTE: The SECG specification allows the private key structure
* to contain curve parameters but recommends that they be stored
* in the PrivateKeyAlgorithmIdentifier field of the PrivateKeyInfo
* instead.
*/
const SEC_ASN1Template lg_nsslowkey_ECPrivateKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.ec.version) },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSLOWKEYPrivateKey, u.ec.privateValue) },
/* We only support named curves for which the parameters are
* encoded as an object ID.
*/
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
offsetof(NSSLOWKEYPrivateKey, u.ec.ecParams.curveOID),
SEC_ASN1_SUB(SEC_ObjectIDTemplate) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC |
SEC_ASN1_XTRN | 1,
offsetof(NSSLOWKEYPrivateKey, u.ec.publicValue),
SEC_ASN1_SUB(SEC_BitStringTemplate) },
{ 0 }
};
/*
* smaller version of EC_FillParams. In this code, we only need
* oid and DER data.
*/
SECStatus
LGEC_FillParams(PLArenaPool *arena, const SECItem *encodedParams,
ECParams *params)
{
SECOidTag tag;
SECItem oid = { siBuffer, NULL, 0 };
#if EC_DEBUG
int i;
printf("Encoded params in EC_DecodeParams: ");
for (i = 0; i < encodedParams->len; i++) {
printf("%02x:", encodedParams->data[i]);
}
printf("\n");
#endif
oid.len = encodedParams->len - 2;
oid.data = encodedParams->data + 2;
if ((encodedParams->data[0] != SEC_ASN1_OBJECT_ID) ||
((tag = SECOID_FindOIDTag(&oid)) == SEC_OID_UNKNOWN)) {
PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
return SECFailure;
}
params->arena = arena;
/* For named curves, fill out curveOID */
params->curveOID.len = oid.len;
params->curveOID.data = (unsigned char *)PORT_ArenaAlloc(arena, oid.len);
if (params->curveOID.data == NULL) {
return SECFailure;
}
memcpy(params->curveOID.data, oid.data, oid.len);
return SECSuccess;
}
/* Copy all of the fields from srcParams into dstParams
*/
SECStatus
LGEC_CopyParams(PLArenaPool *arena, ECParams *dstParams,
const ECParams *srcParams)
{
SECStatus rv = SECFailure;
dstParams->arena = arena;
rv = SECITEM_CopyItem(arena, &dstParams->DEREncoding,
&srcParams->DEREncoding);
if (rv != SECSuccess) {
goto loser;
}
rv = SECITEM_CopyItem(arena, &dstParams->curveOID,
&srcParams->curveOID);
if (rv != SECSuccess) {
goto loser;
}
return SECSuccess;
loser:
return SECFailure;
}
/*
* Since NSS (via PKCS#11) wants to handle big integers as unsigned ints,
* all of the templates above that en/decode into integers must be converted
* from ASN.1's signed integer type. This is done by marking either the
* source or destination (encoding or decoding, respectively) type as
* siUnsignedInteger.
*/
void
lg_prepare_low_rsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
key->u.rsa.modulus.type = siUnsignedInteger;
key->u.rsa.publicExponent.type = siUnsignedInteger;
key->u.rsa.privateExponent.type = siUnsignedInteger;
key->u.rsa.prime1.type = siUnsignedInteger;
key->u.rsa.prime2.type = siUnsignedInteger;
key->u.rsa.exponent1.type = siUnsignedInteger;
key->u.rsa.exponent2.type = siUnsignedInteger;
key->u.rsa.coefficient.type = siUnsignedInteger;
}
void
lg_prepare_low_pqg_params_for_asn1(PQGParams *params)
{
params->prime.type = siUnsignedInteger;
params->subPrime.type = siUnsignedInteger;
params->base.type = siUnsignedInteger;
}
void
lg_prepare_low_dsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
key->u.dsa.publicValue.type = siUnsignedInteger;
key->u.dsa.privateValue.type = siUnsignedInteger;
key->u.dsa.params.prime.type = siUnsignedInteger;
key->u.dsa.params.subPrime.type = siUnsignedInteger;
key->u.dsa.params.base.type = siUnsignedInteger;
}
void
lg_prepare_low_dh_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
key->u.dh.prime.type = siUnsignedInteger;
key->u.dh.base.type = siUnsignedInteger;
key->u.dh.publicValue.type = siUnsignedInteger;
key->u.dh.privateValue.type = siUnsignedInteger;
}
void
lg_prepare_low_ecparams_for_asn1(ECParams *params)
{
params->DEREncoding.type = siUnsignedInteger;
params->curveOID.type = siUnsignedInteger;
}
void
lg_prepare_low_ec_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
key->u.ec.version.type = siUnsignedInteger;
key->u.ec.ecParams.DEREncoding.type = siUnsignedInteger;
key->u.ec.ecParams.curveOID.type = siUnsignedInteger;
key->u.ec.privateValue.type = siUnsignedInteger;
key->u.ec.publicValue.type = siUnsignedInteger;
}
void
lg_nsslowkey_DestroyPrivateKey(NSSLOWKEYPrivateKey *privk)
{
if (privk && privk->arena) {
PORT_FreeArena(privk->arena, PR_TRUE);
}
}
void
lg_nsslowkey_DestroyPublicKey(NSSLOWKEYPublicKey *pubk)
{
if (pubk && pubk->arena) {
PORT_FreeArena(pubk->arena, PR_FALSE);
}
}
NSSLOWKEYPublicKey *
lg_nsslowkey_ConvertToPublicKey(NSSLOWKEYPrivateKey *privk)
{
NSSLOWKEYPublicKey *pubk;
PLArenaPool *arena;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (arena == NULL) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return NULL;
}
switch (privk->keyType) {
case NSSLOWKEYRSAKey:
case NSSLOWKEYNullKey:
pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
sizeof(NSSLOWKEYPublicKey));
if (pubk != NULL) {
SECStatus rv;
pubk->arena = arena;
pubk->keyType = privk->keyType;
if (privk->keyType == NSSLOWKEYNullKey)
return pubk;
rv = SECITEM_CopyItem(arena, &pubk->u.rsa.modulus,
&privk->u.rsa.modulus);
if (rv == SECSuccess) {
rv = SECITEM_CopyItem(arena, &pubk->u.rsa.publicExponent,
&privk->u.rsa.publicExponent);
if (rv == SECSuccess)
return pubk;
}
} else {
PORT_SetError(SEC_ERROR_NO_MEMORY);
}
break;
case NSSLOWKEYDSAKey:
pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
sizeof(NSSLOWKEYPublicKey));
if (pubk != NULL) {
SECStatus rv;
pubk->arena = arena;
pubk->keyType = privk->keyType;
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.publicValue,
&privk->u.dsa.publicValue);
if (rv != SECSuccess)
break;
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.prime,
&privk->u.dsa.params.prime);
if (rv != SECSuccess)
break;
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.subPrime,
&privk->u.dsa.params.subPrime);
if (rv != SECSuccess)
break;
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.base,
&privk->u.dsa.params.base);
if (rv == SECSuccess)
return pubk;
}
break;
case NSSLOWKEYDHKey:
pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
sizeof(NSSLOWKEYPublicKey));
if (pubk != NULL) {
SECStatus rv;
pubk->arena = arena;
pubk->keyType = privk->keyType;
rv = SECITEM_CopyItem(arena, &pubk->u.dh.publicValue,
&privk->u.dh.publicValue);
if (rv != SECSuccess)
break;
rv = SECITEM_CopyItem(arena, &pubk->u.dh.prime,
&privk->u.dh.prime);
if (rv != SECSuccess)
break;
rv = SECITEM_CopyItem(arena, &pubk->u.dh.base,
&privk->u.dh.base);
if (rv == SECSuccess)
return pubk;
}
break;
case NSSLOWKEYECKey:
pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
sizeof(NSSLOWKEYPublicKey));
if (pubk != NULL) {
SECStatus rv;
pubk->arena = arena;
pubk->keyType = privk->keyType;
rv = SECITEM_CopyItem(arena, &pubk->u.ec.publicValue,
&privk->u.ec.publicValue);
if (rv != SECSuccess)
break;
pubk->u.ec.ecParams.arena = arena;
/* Copy the rest of the params */
rv = LGEC_CopyParams(arena, &(pubk->u.ec.ecParams),
&(privk->u.ec.ecParams));
if (rv == SECSuccess)
return pubk;
}
break;
/* No Fortezza in Low Key implementations (Fortezza keys aren't
* stored in our data base */
default:
break;
}
PORT_FreeArena(arena, PR_FALSE);
return NULL;
}