andre@3: /* This Source Code Form is subject to the terms of the Mozilla Public
andre@3:  * License, v. 2.0. If a copy of the MPL was not distributed with this
andre@3:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
andre@3: #include "lowkeyi.h" 
andre@3: #include "secoid.h" 
andre@3: #include "secitem.h"
andre@3: #include "secder.h" 
andre@3: #include "secasn1.h"
andre@3: #include "secerr.h" 
andre@3: 
andre@3: SEC_ASN1_MKSUB(SEC_AnyTemplate)
andre@3: SEC_ASN1_MKSUB(SEC_BitStringTemplate)
andre@3: SEC_ASN1_MKSUB(SEC_ObjectIDTemplate)
andre@3: SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
andre@3: 
andre@3: static const SEC_ASN1Template nsslowkey_AttributeTemplate[] = {
andre@3:     { SEC_ASN1_SEQUENCE, 
andre@3: 	0, NULL, sizeof(NSSLOWKEYAttribute) },
andre@3:     { SEC_ASN1_OBJECT_ID, offsetof(NSSLOWKEYAttribute, attrType) },
andre@3:     { SEC_ASN1_SET_OF | SEC_ASN1_XTRN, offsetof(NSSLOWKEYAttribute, attrValue), 
andre@3: 	SEC_ASN1_SUB(SEC_AnyTemplate) },
andre@3:     { 0 }
andre@3: };
andre@3: 
andre@3: static const SEC_ASN1Template nsslowkey_SetOfAttributeTemplate[] = {
andre@3:     { SEC_ASN1_SET_OF, 0, nsslowkey_AttributeTemplate },
andre@3: };
andre@3: /* ASN1 Templates for new decoder/encoder */
andre@3: const SEC_ASN1Template lg_nsslowkey_PrivateKeyInfoTemplate[] = {
andre@3:     { SEC_ASN1_SEQUENCE,
andre@3: 	0, NULL, sizeof(NSSLOWKEYPrivateKeyInfo) },
andre@3:     { SEC_ASN1_INTEGER,
andre@3: 	offsetof(NSSLOWKEYPrivateKeyInfo,version) },
andre@3:     { SEC_ASN1_INLINE | SEC_ASN1_XTRN,
andre@3: 	offsetof(NSSLOWKEYPrivateKeyInfo,algorithm),
andre@3: 	SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
andre@3:     { SEC_ASN1_OCTET_STRING,
andre@3: 	offsetof(NSSLOWKEYPrivateKeyInfo,privateKey) },
andre@3:     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
andre@3: 	offsetof(NSSLOWKEYPrivateKeyInfo, attributes),
andre@3: 	nsslowkey_SetOfAttributeTemplate },
andre@3:     { 0 }
andre@3: };
andre@3: 
andre@3: const SEC_ASN1Template lg_nsslowkey_PQGParamsTemplate[] = {
andre@3:     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(PQGParams) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(PQGParams,prime) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(PQGParams,subPrime) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(PQGParams,base) },
andre@3:     { 0, }
andre@3: };
andre@3: 
andre@3: const SEC_ASN1Template lg_nsslowkey_RSAPrivateKeyTemplate[] = {
andre@3:     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.version) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.modulus) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.publicExponent) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.privateExponent) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.prime1) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.prime2) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.exponent1) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.exponent2) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.coefficient) },
andre@3:     { 0 }                                                                     
andre@3: };                                                                            
andre@3: 
andre@3: /*
andre@3:  * Allows u.rsa.modulus to be zero length for secret keys with an empty
andre@3:  * CKA_ID incorrectly generated in NSS 3.13.3 or earlier.  Only used for
andre@3:  * decoding.  See bug 715073.
andre@3:  */
andre@3: const SEC_ASN1Template lg_nsslowkey_RSAPrivateKeyTemplate2[] = {
andre@3:     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.version) },
andre@3:     { SEC_ASN1_ANY, offsetof(NSSLOWKEYPrivateKey,u.rsa.modulus) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.publicExponent) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.privateExponent) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.prime1) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.prime2) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.exponent1) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.exponent2) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.coefficient) },
andre@3:     { 0 }
andre@3: };
andre@3: 
andre@3: const SEC_ASN1Template lg_nsslowkey_DSAPrivateKeyTemplate[] = {
andre@3:     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dsa.publicValue) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dsa.privateValue) },
andre@3:     { 0, }
andre@3: };
andre@3: 
andre@3: const SEC_ASN1Template lg_nsslowkey_DHPrivateKeyTemplate[] = {
andre@3:     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.publicValue) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.privateValue) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.base) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.prime) },
andre@3:     { 0, }
andre@3: };
andre@3: 
andre@3: #ifndef NSS_DISABLE_ECC
andre@3: 
andre@3: /* XXX This is just a placeholder for later when we support
andre@3:  * generic curves and need full-blown support for parsing EC
andre@3:  * parameters. For now, we only support named curves in which
andre@3:  * EC params are simply encoded as an object ID and we don't
andre@3:  * use lg_nsslowkey_ECParamsTemplate.
andre@3:  */
andre@3: const SEC_ASN1Template lg_nsslowkey_ECParamsTemplate[] = {
andre@3:     { SEC_ASN1_CHOICE, offsetof(ECParams,type), NULL, sizeof(ECParams) },
andre@3:     { SEC_ASN1_OBJECT_ID, offsetof(ECParams,curveOID), NULL, ec_params_named },
andre@3:     { 0, }
andre@3: };
andre@3: 
andre@3: 
andre@3: /* NOTE: The SECG specification allows the private key structure
andre@3:  * to contain curve parameters but recommends that they be stored
andre@3:  * in the PrivateKeyAlgorithmIdentifier field of the PrivateKeyInfo
andre@3:  * instead.
andre@3:  */
andre@3: const SEC_ASN1Template lg_nsslowkey_ECPrivateKeyTemplate[] = {
andre@3:     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
andre@3:     { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.ec.version) },
andre@3:     { SEC_ASN1_OCTET_STRING, 
andre@3:       offsetof(NSSLOWKEYPrivateKey,u.ec.privateValue) },
andre@3:     /* XXX The following template works for now since we only
andre@3:      * support named curves for which the parameters are
andre@3:      * encoded as an object ID. When we support generic curves,
andre@3:      * we'll need to define lg_nsslowkey_ECParamsTemplate
andre@3:      */
andre@3: #if 1
andre@3:     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
andre@3:       SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0, 
andre@3:       offsetof(NSSLOWKEYPrivateKey,u.ec.ecParams.curveOID), 
andre@3:       SEC_ASN1_SUB(SEC_ObjectIDTemplate) }, 
andre@3: #else
andre@3:     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
andre@3:       SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC | 0, 
andre@3:       offsetof(NSSLOWKEYPrivateKey,u.ec.ecParams), 
andre@3:       lg_nsslowkey_ECParamsTemplate }, 
andre@3: #endif
andre@3:     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
andre@3:       SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC |
andre@3:       SEC_ASN1_XTRN | 1, 
andre@3:       offsetof(NSSLOWKEYPrivateKey,u.ec.publicValue),
andre@3:       SEC_ASN1_SUB(SEC_BitStringTemplate) }, 
andre@3:     { 0, }
andre@3: };
andre@3: 
andre@3: 
andre@3: /*
andre@3:  * smaller version of EC_FillParams. In this code, we only need
andre@3:  * oid and DER data.
andre@3:  */
andre@3: SECStatus
andre@3: LGEC_FillParams(PLArenaPool *arena, const SECItem *encodedParams,
andre@3:     ECParams *params)
andre@3: {
andre@3:     SECOidTag tag;
andre@3:     SECItem oid = { siBuffer, NULL, 0};
andre@3: 
andre@3: #if EC_DEBUG
andre@3:     int i;
andre@3: 
andre@3:     printf("Encoded params in EC_DecodeParams: ");
andre@3:     for (i = 0; i < encodedParams->len; i++) {
andre@3: 	    printf("%02x:", encodedParams->data[i]);
andre@3:     }
andre@3:     printf("\n");
andre@3: #endif
andre@3: 
andre@3:     oid.len = encodedParams->len - 2;
andre@3:     oid.data = encodedParams->data + 2;
andre@3:     if ((encodedParams->data[0] != SEC_ASN1_OBJECT_ID) ||
andre@3: 	((tag = SECOID_FindOIDTag(&oid)) == SEC_OID_UNKNOWN)) { 
andre@3: 	    PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
andre@3: 	    return SECFailure;
andre@3:     }
andre@3: 
andre@3:     params->arena = arena;
andre@3: 
andre@3:     /* For named curves, fill out curveOID */
andre@3:     params->curveOID.len = oid.len;
andre@3:     params->curveOID.data = (unsigned char *) PORT_ArenaAlloc(arena, oid.len);
andre@3:     if (params->curveOID.data == NULL)  {
andre@3: 	return SECFailure;
andre@3:     }
andre@3:     memcpy(params->curveOID.data, oid.data, oid.len);
andre@3: 
andre@3:     return SECSuccess;
andre@3: }
andre@3: 
andre@3: /* Copy all of the fields from srcParams into dstParams
andre@3:  */
andre@3: SECStatus
andre@3: LGEC_CopyParams(PLArenaPool *arena, ECParams *dstParams,
andre@3: 	      const ECParams *srcParams)
andre@3: {
andre@3:     SECStatus rv = SECFailure;
andre@3: 
andre@3:     dstParams->arena = arena;
andre@3:     rv = SECITEM_CopyItem(arena, &dstParams->DEREncoding,
andre@3: 				 &srcParams->DEREncoding);
andre@3:     if (rv != SECSuccess) {
andre@3: 	goto loser;
andre@3:     }
andre@3:     rv =SECITEM_CopyItem(arena, &dstParams->curveOID,
andre@3: 				&srcParams->curveOID);
andre@3:     if (rv != SECSuccess) {
andre@3: 	goto loser;
andre@3:     }
andre@3: 
andre@3:     return SECSuccess;
andre@3: 
andre@3: loser:
andre@3:     return SECFailure;
andre@3: }
andre@3: #endif /* NSS_DISABLE_ECC */
andre@3: /*
andre@3:  * See bugzilla bug 125359
andre@3:  * Since NSS (via PKCS#11) wants to handle big integers as unsigned ints,
andre@3:  * all of the templates above that en/decode into integers must be converted
andre@3:  * from ASN.1's signed integer type.  This is done by marking either the
andre@3:  * source or destination (encoding or decoding, respectively) type as
andre@3:  * siUnsignedInteger.
andre@3:  */
andre@3: 
andre@3: void
andre@3: lg_prepare_low_rsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
andre@3: {
andre@3:     key->u.rsa.modulus.type = siUnsignedInteger;
andre@3:     key->u.rsa.publicExponent.type = siUnsignedInteger;
andre@3:     key->u.rsa.privateExponent.type = siUnsignedInteger;
andre@3:     key->u.rsa.prime1.type = siUnsignedInteger;
andre@3:     key->u.rsa.prime2.type = siUnsignedInteger;
andre@3:     key->u.rsa.exponent1.type = siUnsignedInteger;
andre@3:     key->u.rsa.exponent2.type = siUnsignedInteger;
andre@3:     key->u.rsa.coefficient.type = siUnsignedInteger;
andre@3: }
andre@3: 
andre@3: void
andre@3: lg_prepare_low_pqg_params_for_asn1(PQGParams *params)
andre@3: {
andre@3:     params->prime.type = siUnsignedInteger;
andre@3:     params->subPrime.type = siUnsignedInteger;
andre@3:     params->base.type = siUnsignedInteger;
andre@3: }
andre@3: 
andre@3: void
andre@3: lg_prepare_low_dsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
andre@3: {
andre@3:     key->u.dsa.publicValue.type = siUnsignedInteger;
andre@3:     key->u.dsa.privateValue.type = siUnsignedInteger;
andre@3:     key->u.dsa.params.prime.type = siUnsignedInteger;
andre@3:     key->u.dsa.params.subPrime.type = siUnsignedInteger;
andre@3:     key->u.dsa.params.base.type = siUnsignedInteger;
andre@3: }
andre@3: 
andre@3: void
andre@3: lg_prepare_low_dh_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
andre@3: {
andre@3:     key->u.dh.prime.type = siUnsignedInteger;
andre@3:     key->u.dh.base.type = siUnsignedInteger;
andre@3:     key->u.dh.publicValue.type = siUnsignedInteger;
andre@3:     key->u.dh.privateValue.type = siUnsignedInteger;
andre@3: }
andre@3: 
andre@3: #ifndef NSS_DISABLE_ECC
andre@3: void
andre@3: lg_prepare_low_ecparams_for_asn1(ECParams *params)
andre@3: {
andre@3:     params->DEREncoding.type = siUnsignedInteger;
andre@3:     params->curveOID.type = siUnsignedInteger;
andre@3: }
andre@3: 
andre@3: void
andre@3: lg_prepare_low_ec_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
andre@3: {
andre@3:     key->u.ec.version.type = siUnsignedInteger;
andre@3:     key->u.ec.ecParams.DEREncoding.type = siUnsignedInteger;
andre@3:     key->u.ec.ecParams.curveOID.type = siUnsignedInteger;
andre@3:     key->u.ec.privateValue.type = siUnsignedInteger;
andre@3:     key->u.ec.publicValue.type = siUnsignedInteger;
andre@3: }
andre@3: #endif /* NSS_DISABLE_ECC */
andre@3: 
andre@3: void
andre@3: lg_nsslowkey_DestroyPrivateKey(NSSLOWKEYPrivateKey *privk)
andre@3: {
andre@3:     if (privk && privk->arena) {
andre@3: 	PORT_FreeArena(privk->arena, PR_TRUE);
andre@3:     }
andre@3: }
andre@3: 
andre@3: void
andre@3: lg_nsslowkey_DestroyPublicKey(NSSLOWKEYPublicKey *pubk)
andre@3: {
andre@3:     if (pubk && pubk->arena) {
andre@3: 	PORT_FreeArena(pubk->arena, PR_FALSE);
andre@3:     }
andre@3: }
andre@3: 
andre@3: NSSLOWKEYPublicKey *
andre@3: lg_nsslowkey_ConvertToPublicKey(NSSLOWKEYPrivateKey *privk)
andre@3: {
andre@3:     NSSLOWKEYPublicKey *pubk;
andre@3:     PLArenaPool *arena;
andre@3: 
andre@3: 
andre@3:     arena = PORT_NewArena (DER_DEFAULT_CHUNKSIZE);
andre@3:     if (arena == NULL) {
andre@3:         PORT_SetError (SEC_ERROR_NO_MEMORY);
andre@3:         return NULL;
andre@3:     }
andre@3: 
andre@3:     switch(privk->keyType) {
andre@3:       case NSSLOWKEYRSAKey:
andre@3:       case NSSLOWKEYNullKey:
andre@3: 	pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
andre@3: 						sizeof (NSSLOWKEYPublicKey));
andre@3: 	if (pubk != NULL) {
andre@3: 	    SECStatus rv;
andre@3: 
andre@3: 	    pubk->arena = arena;
andre@3: 	    pubk->keyType = privk->keyType;
andre@3: 	    if (privk->keyType == NSSLOWKEYNullKey) return pubk;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.rsa.modulus,
andre@3: 				  &privk->u.rsa.modulus);
andre@3: 	    if (rv == SECSuccess) {
andre@3: 		rv = SECITEM_CopyItem (arena, &pubk->u.rsa.publicExponent,
andre@3: 				       &privk->u.rsa.publicExponent);
andre@3: 		if (rv == SECSuccess)
andre@3: 		    return pubk;
andre@3: 	    }
andre@3: 	} else {
andre@3: 	    PORT_SetError (SEC_ERROR_NO_MEMORY);
andre@3: 	}
andre@3: 	break;
andre@3:       case NSSLOWKEYDSAKey:
andre@3: 	pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
andre@3: 						    sizeof(NSSLOWKEYPublicKey));
andre@3: 	if (pubk != NULL) {
andre@3: 	    SECStatus rv;
andre@3: 
andre@3: 	    pubk->arena = arena;
andre@3: 	    pubk->keyType = privk->keyType;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.dsa.publicValue,
andre@3: 				  &privk->u.dsa.publicValue);
andre@3: 	    if (rv != SECSuccess) break;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.prime,
andre@3: 				  &privk->u.dsa.params.prime);
andre@3: 	    if (rv != SECSuccess) break;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.subPrime,
andre@3: 				  &privk->u.dsa.params.subPrime);
andre@3: 	    if (rv != SECSuccess) break;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.base,
andre@3: 				  &privk->u.dsa.params.base);
andre@3: 	    if (rv == SECSuccess) return pubk;
andre@3: 	}
andre@3: 	break;
andre@3:       case NSSLOWKEYDHKey:
andre@3: 	pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
andre@3: 						    sizeof(NSSLOWKEYPublicKey));
andre@3: 	if (pubk != NULL) {
andre@3: 	    SECStatus rv;
andre@3: 
andre@3: 	    pubk->arena = arena;
andre@3: 	    pubk->keyType = privk->keyType;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.dh.publicValue,
andre@3: 				  &privk->u.dh.publicValue);
andre@3: 	    if (rv != SECSuccess) break;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.dh.prime,
andre@3: 				  &privk->u.dh.prime);
andre@3: 	    if (rv != SECSuccess) break;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.dh.base,
andre@3: 				  &privk->u.dh.base);
andre@3: 	    if (rv == SECSuccess) return pubk;
andre@3: 	}
andre@3: 	break;
andre@3: #ifndef NSS_DISABLE_ECC
andre@3:       case NSSLOWKEYECKey:
andre@3: 	pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
andre@3: 						    sizeof(NSSLOWKEYPublicKey));
andre@3: 	if (pubk != NULL) {
andre@3: 	    SECStatus rv;
andre@3: 
andre@3: 	    pubk->arena = arena;
andre@3: 	    pubk->keyType = privk->keyType;
andre@3: 	    rv = SECITEM_CopyItem(arena, &pubk->u.ec.publicValue,
andre@3: 				  &privk->u.ec.publicValue);
andre@3: 	    if (rv != SECSuccess) break;
andre@3: 	    pubk->u.ec.ecParams.arena = arena;
andre@3: 	    /* Copy the rest of the params */
andre@3: 	    rv = LGEC_CopyParams(arena, &(pubk->u.ec.ecParams),
andre@3: 			       &(privk->u.ec.ecParams));
andre@3: 	    if (rv == SECSuccess) return pubk;
andre@3: 	}
andre@3: 	break;
andre@3: #endif /* NSS_DISABLE_ECC */
andre@3: 	/* No Fortezza in Low Key implementations (Fortezza keys aren't
andre@3: 	 * stored in our data base */
andre@3:     default:
andre@3: 	break;
andre@3:     }
andre@3: 
andre@3:     PORT_FreeArena (arena, PR_FALSE);
andre@3:     return NULL;
andre@3: }
andre@3: