The Tor Browser: security/nss/lib/cryptohi/seckey.c@b8a032363ba2 (annotated)

security/nss/lib/cryptohi/seckey.c@b8a032363ba2 (annotated)

security/nss/lib/cryptohi/seckey.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* 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 http://mozilla.org/MPL/2.0/. */
 #include "cryptohi.h"
 #include "keyhi.h"
 #include "secoid.h"
 #include "secitem.h"
 #include "secder.h"
 #include "base64.h"
 #include "secasn1.h"
 #include "cert.h"
 #include "pk11func.h"
 #include "secerr.h"
 #include "secdig.h"
 #include "prtime.h"
 #include "keyi.h"
 SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
 SEC_ASN1_MKSUB(SEC_IntegerTemplate)
 const SEC_ASN1Template CERT_SubjectPublicKeyInfoTemplate[] = {
     { SEC_ASN1_SEQUENCE,
 , NULL, sizeof(CERTSubjectPublicKeyInfo) },
     { SEC_ASN1_INLINE | SEC_ASN1_XTRN,
 	  offsetof(CERTSubjectPublicKeyInfo,algorithm),
 	  SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
     { SEC_ASN1_BIT_STRING,
 	  offsetof(CERTSubjectPublicKeyInfo,subjectPublicKey), },
     { 0, }
 };
 const SEC_ASN1Template CERT_PublicKeyAndChallengeTemplate[] =
 {
     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTPublicKeyAndChallenge) },
     { SEC_ASN1_ANY, offsetof(CERTPublicKeyAndChallenge,spki) },
     { SEC_ASN1_IA5_STRING, offsetof(CERTPublicKeyAndChallenge,challenge) },
     { 0 }
 };
 const SEC_ASN1Template SECKEY_RSAPublicKeyTemplate[] = {
     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SECKEYPublicKey) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPublicKey,u.rsa.modulus), },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPublicKey,u.rsa.publicExponent), },
     { 0, }
 };
 static const SEC_ASN1Template seckey_PointerToAlgorithmIDTemplate[] = {
     { SEC_ASN1_POINTER | SEC_ASN1_XTRN, 0,
       SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) }
 };
 /* Parameters for SEC_OID_PKCS1_RSA_PSS_SIGNATURE */
 const SEC_ASN1Template SECKEY_RSAPSSParamsTemplate[] =
 {
     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SECKEYRSAPSSParams) },
     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_EXPLICIT |
           SEC_ASN1_CONTEXT_SPECIFIC | 0,
           offsetof(SECKEYRSAPSSParams, hashAlg),
           seckey_PointerToAlgorithmIDTemplate },
     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_EXPLICIT |
           SEC_ASN1_CONTEXT_SPECIFIC | 1,
           offsetof(SECKEYRSAPSSParams, maskAlg),
           seckey_PointerToAlgorithmIDTemplate },
     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_EXPLICIT |
           SEC_ASN1_XTRN | SEC_ASN1_CONTEXT_SPECIFIC | 2,
           offsetof(SECKEYRSAPSSParams, saltLength),
           SEC_ASN1_SUB(SEC_IntegerTemplate) },
     { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_EXPLICIT |
           SEC_ASN1_XTRN | SEC_ASN1_CONTEXT_SPECIFIC | 3,
           offsetof(SECKEYRSAPSSParams, trailerField),
           SEC_ASN1_SUB(SEC_IntegerTemplate) },
     { 0 }
 };
 const SEC_ASN1Template SECKEY_DSAPublicKeyTemplate[] = {
     { SEC_ASN1_INTEGER, offsetof(SECKEYPublicKey,u.dsa.publicValue), },
     { 0, }
 };
 const SEC_ASN1Template SECKEY_PQGParamsTemplate[] = {
     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SECKEYPQGParams) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPQGParams,prime) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPQGParams,subPrime) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPQGParams,base) },
     { 0, }
 };
 const SEC_ASN1Template SECKEY_DHPublicKeyTemplate[] = {
     { SEC_ASN1_INTEGER, offsetof(SECKEYPublicKey,u.dh.publicValue), },
     { 0, }
 };
 const SEC_ASN1Template SECKEY_DHParamKeyTemplate[] = {
     { SEC_ASN1_SEQUENCE,  0, NULL, sizeof(SECKEYPublicKey) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPublicKey,u.dh.prime), },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPublicKey,u.dh.base), },
     /* XXX chrisk: this needs to be expanded for decoding of j and validationParms (RFC2459 7.3.2) */
     { SEC_ASN1_SKIP_REST },
     { 0, }
 };
 SEC_ASN1_CHOOSER_IMPLEMENT(SECKEY_DSAPublicKeyTemplate)
 SEC_ASN1_CHOOSER_IMPLEMENT(SECKEY_RSAPublicKeyTemplate)
 SEC_ASN1_CHOOSER_IMPLEMENT(SECKEY_RSAPSSParamsTemplate)
 SEC_ASN1_CHOOSER_IMPLEMENT(CERT_SubjectPublicKeyInfoTemplate)
 /*
  * See bugzilla bug 125359
  * 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.
  */
 static void
 prepare_rsa_pub_key_for_asn1(SECKEYPublicKey *pubk)
 {
     pubk->u.rsa.modulus.type = siUnsignedInteger;
     pubk->u.rsa.publicExponent.type = siUnsignedInteger;
 }
 static void
 prepare_dsa_pub_key_for_asn1(SECKEYPublicKey *pubk)
 {
     pubk->u.dsa.publicValue.type = siUnsignedInteger;
 }
 static void
 prepare_pqg_params_for_asn1(SECKEYPQGParams *params)
 {
     params->prime.type = siUnsignedInteger;
     params->subPrime.type = siUnsignedInteger;
     params->base.type = siUnsignedInteger;
 }
 static void
 prepare_dh_pub_key_for_asn1(SECKEYPublicKey *pubk)
 {
     pubk->u.dh.prime.type = siUnsignedInteger;
     pubk->u.dh.base.type = siUnsignedInteger;
     pubk->u.dh.publicValue.type = siUnsignedInteger;
 }
 /* Create an RSA key pair is any slot able to do so.
 ** The created keys are "session" (temporary), not "token" (permanent),
 ** and they are "sensitive", which makes them costly to move to another token.
 */
 SECKEYPrivateKey *
 SECKEY_CreateRSAPrivateKey(int keySizeInBits,SECKEYPublicKey **pubk, void *cx)
 {
     SECKEYPrivateKey *privk;
     PK11RSAGenParams param;
     PK11SlotInfo *slot = PK11_GetBestSlot(CKM_RSA_PKCS_KEY_PAIR_GEN,cx);
     if (!slot) {
 	return NULL;
     }
     param.keySizeInBits = keySizeInBits;
     param.pe = 65537L;
     privk = PK11_GenerateKeyPair(slot,CKM_RSA_PKCS_KEY_PAIR_GEN,&param,pubk,
 					PR_FALSE, PR_TRUE, cx);
     PK11_FreeSlot(slot);
     return(privk);
 }
 /* Create a DH key pair in any slot able to do so,
 ** This is a "session" (temporary), not "token" (permanent) key.
 ** Because of the high probability that this key will need to be moved to
 ** another token, and the high cost of moving "sensitive" keys, we attempt
 ** to create this key pair without the "sensitive" attribute, but revert to
 ** creating a "sensitive" key if necessary.
 */
 SECKEYPrivateKey *
 SECKEY_CreateDHPrivateKey(SECKEYDHParams *param, SECKEYPublicKey **pubk, void *cx)
 {
     SECKEYPrivateKey *privk;
     PK11SlotInfo *slot;
     if (!param || !param->base.data || !param->prime.data ||
         param->prime.len < 512/8 || param->base.len == 0 ||
         param->base.len > param->prime.len + 1 ||
 	(param->base.len == 1 && param->base.data[0] == 0)) {
 	PORT_SetError(SEC_ERROR_INVALID_ARGS);
 	return NULL;
     }
     slot = PK11_GetBestSlot(CKM_DH_PKCS_KEY_PAIR_GEN,cx);
     if (!slot) {
 	return NULL;
     }
     privk = PK11_GenerateKeyPair(slot, CKM_DH_PKCS_KEY_PAIR_GEN, param,
                                  pubk, PR_FALSE, PR_FALSE, cx);
     if (!privk)
 	privk = PK11_GenerateKeyPair(slot, CKM_DH_PKCS_KEY_PAIR_GEN, param,
 	                             pubk, PR_FALSE, PR_TRUE, cx);
     PK11_FreeSlot(slot);
     return(privk);
 }
 /* Create an EC key pair in any slot able to do so,
 ** This is a "session" (temporary), not "token" (permanent) key.
 ** Because of the high probability that this key will need to be moved to
 ** another token, and the high cost of moving "sensitive" keys, we attempt
 ** to create this key pair without the "sensitive" attribute, but revert to
 ** creating a "sensitive" key if necessary.
 */
 SECKEYPrivateKey *
 SECKEY_CreateECPrivateKey(SECKEYECParams *param, SECKEYPublicKey **pubk, void *cx)
 {
     SECKEYPrivateKey *privk;
     PK11SlotInfo *slot = PK11_GetBestSlot(CKM_EC_KEY_PAIR_GEN,cx);
     if (!slot) {
 	return NULL;
     }
     privk = PK11_GenerateKeyPairWithOpFlags(slot, CKM_EC_KEY_PAIR_GEN,
                         param, pubk,
                         PK11_ATTR_SESSION | PK11_ATTR_INSENSITIVE |
                         PK11_ATTR_PUBLIC,
                         CKF_DERIVE, CKF_DERIVE|CKF_SIGN,cx);
     if (!privk)
         privk = PK11_GenerateKeyPairWithOpFlags(slot, CKM_EC_KEY_PAIR_GEN,
                         param, pubk,
                         PK11_ATTR_SESSION | PK11_ATTR_SENSITIVE |
                         PK11_ATTR_PRIVATE,
                         CKF_DERIVE, CKF_DERIVE|CKF_SIGN,cx);
     PK11_FreeSlot(slot);
     return(privk);
 }
 void
 SECKEY_DestroyPrivateKey(SECKEYPrivateKey *privk)
 {
     if (privk) {
 	if (privk->pkcs11Slot) {
 	    if (privk->pkcs11IsTemp) {
 	    	PK11_DestroyObject(privk->pkcs11Slot,privk->pkcs11ID);
 	    }
 	    PK11_FreeSlot(privk->pkcs11Slot);
 	}
     	if (privk->arena) {
 	    PORT_FreeArena(privk->arena, PR_TRUE);
 	}
     }
 }
 void
 SECKEY_DestroyPublicKey(SECKEYPublicKey *pubk)
 {
     if (pubk) {
 	if (pubk->pkcs11Slot) {
 	    if (!PK11_IsPermObject(pubk->pkcs11Slot,pubk->pkcs11ID)) {
 		PK11_DestroyObject(pubk->pkcs11Slot,pubk->pkcs11ID);
 	    }
 	    PK11_FreeSlot(pubk->pkcs11Slot);
 	}
     	if (pubk->arena) {
 	    PORT_FreeArena(pubk->arena, PR_FALSE);
 	}
     }
 }
 SECStatus
 SECKEY_CopySubjectPublicKeyInfo(PLArenaPool *arena,
 			     CERTSubjectPublicKeyInfo *to,
 			     CERTSubjectPublicKeyInfo *from)
 {
     SECStatus rv;
     SECItem spk;
     rv = SECOID_CopyAlgorithmID(arena, &to->algorithm, &from->algorithm);
     if (rv == SECSuccess) {
 	/*
 	 * subjectPublicKey is a bit string, whose length is in bits.
 	 * Convert the length from bits to bytes for SECITEM_CopyItem.
 	 */
 	spk = from->subjectPublicKey;
 	DER_ConvertBitString(&spk);
 	rv = SECITEM_CopyItem(arena, &to->subjectPublicKey, &spk);
 	/* Set the length back to bits. */
 	if (rv == SECSuccess) {
 	    to->subjectPublicKey.len = from->subjectPublicKey.len;
 	}
     }
     return rv;
 }
 /* Procedure to update the pqg parameters for a cert's public key.
  * pqg parameters only need to be updated for DSA certificates.
  * The procedure uses calls to itself recursively to update a certificate
  * issuer's pqg parameters.  Some important rules are:
  *    - Do nothing if the cert already has PQG parameters.
  *    - If the cert does not have PQG parameters, obtain them from the issuer.
  *    - A valid cert chain cannot have a DSA cert without
  *      pqg parameters that has a parent that is not a DSA cert.  */
 static SECStatus
 seckey_UpdateCertPQGChain(CERTCertificate * subjectCert, int count)
 {
     SECStatus rv;
     SECOidData *oid=NULL;
     int tag;
     CERTSubjectPublicKeyInfo * subjectSpki=NULL;
     CERTSubjectPublicKeyInfo * issuerSpki=NULL;
     CERTCertificate *issuerCert = NULL;
     rv = SECSuccess;
     /* increment cert chain length counter*/
     count++;
     /* check if cert chain length exceeds the maximum length*/
     if (count > CERT_MAX_CERT_CHAIN) {
 	return SECFailure;
     }
     oid = SECOID_FindOID(&subjectCert->subjectPublicKeyInfo.algorithm.algorithm);
     if (oid != NULL) {
         tag = oid->offset;
         /* Check if cert has a DSA or EC public key. If not, return
          * success since no PQG params need to be updated.
 	 *
 	 * Question: do we really need to do this for EC keys. They don't have
 	 * PQG parameters, but they do have parameters. The question is does
 	 * the child cert inherit thost parameters for EC from the parent, or
 	 * do we always include those parameters in each cert.
 	 */
 	if ( (tag != SEC_OID_ANSIX9_DSA_SIGNATURE) &&
              (tag != SEC_OID_ANSIX9_DSA_SIGNATURE_WITH_SHA1_DIGEST) &&
              (tag != SEC_OID_NIST_DSA_SIGNATURE_WITH_SHA224_DIGEST) &&
              (tag != SEC_OID_NIST_DSA_SIGNATURE_WITH_SHA256_DIGEST) &&
              (tag != SEC_OID_BOGUS_DSA_SIGNATURE_WITH_SHA1_DIGEST) &&
              (tag != SEC_OID_SDN702_DSA_SIGNATURE) &&
              (tag != SEC_OID_ANSIX962_EC_PUBLIC_KEY) ) {
             return SECSuccess;
         }
     } else {
         return SECFailure;  /* return failure if oid is NULL */
     }
     /* if cert has PQG parameters, return success */
     subjectSpki=&subjectCert->subjectPublicKeyInfo;
     if (subjectSpki->algorithm.parameters.len != 0) {
         return SECSuccess;
     }
     /* check if the cert is self-signed */
     if (subjectCert->isRoot) {
       /* fail since cert is self-signed and has no pqg params. */
 	return SECFailure;
     }
     /* get issuer cert */
     issuerCert = CERT_FindCertIssuer(subjectCert, PR_Now(), certUsageAnyCA);
     if ( ! issuerCert ) {
 	return SECFailure;
     }
     /* if parent is not DSA, return failure since
        we don't allow this case. */
     oid = SECOID_FindOID(&issuerCert->subjectPublicKeyInfo.algorithm.algorithm);
     if (oid != NULL) {
         tag = oid->offset;
         /* Check if issuer cert has a DSA public key. If not,
          * return failure.   */
 	if ( (tag != SEC_OID_ANSIX9_DSA_SIGNATURE) &&
              (tag != SEC_OID_ANSIX9_DSA_SIGNATURE_WITH_SHA1_DIGEST) &&
              (tag != SEC_OID_NIST_DSA_SIGNATURE_WITH_SHA224_DIGEST) &&
              (tag != SEC_OID_NIST_DSA_SIGNATURE_WITH_SHA256_DIGEST) &&
              (tag != SEC_OID_BOGUS_DSA_SIGNATURE_WITH_SHA1_DIGEST) &&
              (tag != SEC_OID_SDN702_DSA_SIGNATURE) &&
              (tag != SEC_OID_ANSIX962_EC_PUBLIC_KEY) ) {
             rv = SECFailure;
             goto loser;
         }
     } else {
         rv = SECFailure;  /* return failure if oid is NULL */
         goto loser;
     }
     /* at this point the subject cert has no pqg parameters and the
      * issuer cert has a DSA public key.  Update the issuer's
      * pqg parameters with a recursive call to this same function. */
     rv = seckey_UpdateCertPQGChain(issuerCert, count);
     if (rv != SECSuccess) {
         rv = SECFailure;
         goto loser;
     }
     /* ensure issuer has pqg parameters */
     issuerSpki=&issuerCert->subjectPublicKeyInfo;
     if (issuerSpki->algorithm.parameters.len == 0) {
         rv = SECFailure;
     }
     /* if update was successful and pqg params present, then copy the
      * parameters to the subject cert's key. */
     if (rv == SECSuccess) {
         rv = SECITEM_CopyItem(subjectCert->arena,
                               &subjectSpki->algorithm.parameters,
 	   		      &issuerSpki->algorithm.parameters);
     }
 loser:
     if (issuerCert) {
         CERT_DestroyCertificate(issuerCert);
     }
     return rv;
 }
 SECStatus
 SECKEY_UpdateCertPQG(CERTCertificate * subjectCert)
 {
     if (!subjectCert) {
         PORT_SetError(SEC_ERROR_INVALID_ARGS);
 	return SECFailure;
     }
     return seckey_UpdateCertPQGChain(subjectCert,0);
 }
 /* Decode the DSA PQG parameters.  The params could be stored in two
  * possible formats, the old fortezza-only wrapped format or
  * the normal standard format.  Store the decoded parameters in
  * a V3 certificate data structure.  */
 static SECStatus
 seckey_DSADecodePQG(PLArenaPool *arena, SECKEYPublicKey *pubk,
                     const SECItem *params) {
     SECStatus rv;
     SECItem newparams;
     if (params == NULL) return SECFailure;
     if (params->data == NULL) return SECFailure;
     PORT_Assert(arena);
     /* make a copy of the data into the arena so QuickDER output is valid */
     rv = SECITEM_CopyItem(arena, &newparams, params);
     /* Check if params use the standard format.
      * The value 0xa1 will appear in the first byte of the parameter data
      * if the PQG parameters are not using the standard format.  This
      * code should be changed to use a better method to detect non-standard
      * parameters.    */
     if ((newparams.data[0] != 0xa1) &&
         (newparams.data[0] != 0xa0)) {
         if (SECSuccess == rv) {
              /* PQG params are in the standard format */
              prepare_pqg_params_for_asn1(&pubk->u.dsa.params);
              rv = SEC_QuickDERDecodeItem(arena, &pubk->u.dsa.params,
                                  SECKEY_PQGParamsTemplate,
                                  &newparams);
         }
     } else {
         if (SECSuccess == rv) {
             /* else the old fortezza-only wrapped format is used. */
             PORT_SetError(SEC_ERROR_BAD_DER);
             rv = SECFailure;
         }
     }
     return rv;
 }
 /* Function used to make an oid tag to a key type */
 KeyType
 seckey_GetKeyType (SECOidTag tag) {
     KeyType keyType;
     switch (tag) {
       case SEC_OID_X500_RSA_ENCRYPTION:
       case SEC_OID_PKCS1_RSA_ENCRYPTION:
 	keyType = rsaKey;
 	break;
       case SEC_OID_PKCS1_RSA_PSS_SIGNATURE:
 	keyType = rsaPssKey;
 	break;
       case SEC_OID_PKCS1_RSA_OAEP_ENCRYPTION:
 	keyType = rsaOaepKey;
 	break;
       case SEC_OID_ANSIX9_DSA_SIGNATURE:
 	keyType = dsaKey;
 	break;
       case SEC_OID_MISSI_KEA_DSS_OLD:
       case SEC_OID_MISSI_KEA_DSS:
       case SEC_OID_MISSI_DSS_OLD:
       case SEC_OID_MISSI_DSS:
 	keyType = fortezzaKey;
 	break;
       case SEC_OID_MISSI_KEA:
       case SEC_OID_MISSI_ALT_KEA:
 	keyType = keaKey;
 	break;
       case SEC_OID_X942_DIFFIE_HELMAN_KEY:
 	keyType = dhKey;
 	break;
       case SEC_OID_ANSIX962_EC_PUBLIC_KEY:
 	keyType = ecKey;
 	break;
       /* accommodate applications that hand us a signature type when they
 	* should be handing us a cipher type */
       case SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION:
       case SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION:
       case SEC_OID_PKCS1_SHA224_WITH_RSA_ENCRYPTION:
       case SEC_OID_PKCS1_SHA256_WITH_RSA_ENCRYPTION:
       case SEC_OID_PKCS1_SHA384_WITH_RSA_ENCRYPTION:
       case SEC_OID_PKCS1_SHA512_WITH_RSA_ENCRYPTION:
 	keyType = rsaKey;
 	break;
       default:
 	keyType = nullKey;
     }
     return keyType;
 }
 /* Function used to determine what kind of cert we are dealing with. */
 KeyType
 CERT_GetCertKeyType (const CERTSubjectPublicKeyInfo *spki)
 {
     return seckey_GetKeyType(SECOID_GetAlgorithmTag(&spki->algorithm));
 }
 static SECKEYPublicKey *
 seckey_ExtractPublicKey(const CERTSubjectPublicKeyInfo *spki)
 {
     SECKEYPublicKey *pubk;
     SECItem os, newOs, newParms;
     SECStatus rv;
     PLArenaPool *arena;
     SECOidTag tag;
     arena = PORT_NewArena (DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL)
 	return NULL;
     pubk = (SECKEYPublicKey *) PORT_ArenaZAlloc(arena, sizeof(SECKEYPublicKey));
     if (pubk == NULL) {
 	PORT_FreeArena (arena, PR_FALSE);
 	return NULL;
     }
     pubk->arena = arena;
     pubk->pkcs11Slot = 0;
     pubk->pkcs11ID = CK_INVALID_HANDLE;
     /* Convert bit string length from bits to bytes */
     os = spki->subjectPublicKey;
     DER_ConvertBitString (&os);
     tag = SECOID_GetAlgorithmTag(&spki->algorithm);
     /* copy the DER into the arena, since Quick DER returns data that points
        into the DER input, which may get freed by the caller */
     rv = SECITEM_CopyItem(arena, &newOs, &os);
     if ( rv == SECSuccess )
     switch ( tag ) {
       case SEC_OID_X500_RSA_ENCRYPTION:
       case SEC_OID_PKCS1_RSA_ENCRYPTION:
 	pubk->keyType = rsaKey;
 	prepare_rsa_pub_key_for_asn1(pubk);
         rv = SEC_QuickDERDecodeItem(arena, pubk, SECKEY_RSAPublicKeyTemplate, &newOs);
 	if (rv == SECSuccess)
 	    return pubk;
 	break;
       case SEC_OID_ANSIX9_DSA_SIGNATURE:
       case SEC_OID_SDN702_DSA_SIGNATURE:
 	pubk->keyType = dsaKey;
 	prepare_dsa_pub_key_for_asn1(pubk);
 	rv = SEC_QuickDERDecodeItem(arena, pubk, SECKEY_DSAPublicKeyTemplate, &newOs);
 	if (rv != SECSuccess) break;
         rv = seckey_DSADecodePQG(arena, pubk,
                                  &spki->algorithm.parameters);
 	if (rv == SECSuccess) return pubk;
 	break;
       case SEC_OID_X942_DIFFIE_HELMAN_KEY:
 	pubk->keyType = dhKey;
 	prepare_dh_pub_key_for_asn1(pubk);
 	rv = SEC_QuickDERDecodeItem(arena, pubk, SECKEY_DHPublicKeyTemplate, &newOs);
 	if (rv != SECSuccess) break;
         /* copy the DER into the arena, since Quick DER returns data that points
            into the DER input, which may get freed by the caller */
         rv = SECITEM_CopyItem(arena, &newParms, &spki->algorithm.parameters);
         if ( rv != SECSuccess )
             break;
         rv = SEC_QuickDERDecodeItem(arena, pubk, SECKEY_DHParamKeyTemplate,
                                  &newParms);
 	if (rv == SECSuccess) return pubk;
 	break;
       case SEC_OID_ANSIX962_EC_PUBLIC_KEY:
 	pubk->keyType = ecKey;
 	pubk->u.ec.size = 0;
 	/* Since PKCS#11 directly takes the DER encoding of EC params
 	 * and public value, we don't need any decoding here.
 	 */
         rv = SECITEM_CopyItem(arena, &pubk->u.ec.DEREncodedParams,
 	    &spki->algorithm.parameters);
         if ( rv != SECSuccess )
             break;
         rv = SECITEM_CopyItem(arena, &pubk->u.ec.publicValue, &newOs);
 	if (rv == SECSuccess) return pubk;
 	break;
       default:
 	PORT_SetError(SEC_ERROR_UNSUPPORTED_KEYALG);
 	rv = SECFailure;
 	break;
     }
     SECKEY_DestroyPublicKey (pubk);
     return NULL;
 }
 /* required for JSS */
 SECKEYPublicKey *
 SECKEY_ExtractPublicKey(const CERTSubjectPublicKeyInfo *spki)
 {
     return seckey_ExtractPublicKey(spki);
 }
 SECKEYPublicKey *
 CERT_ExtractPublicKey(CERTCertificate *cert)
 {
     SECStatus rv;
     if (!cert) {
         PORT_SetError(SEC_ERROR_INVALID_ARGS);
 	return NULL;
     }
     rv = SECKEY_UpdateCertPQG(cert);
     if (rv != SECSuccess) return NULL;
     return seckey_ExtractPublicKey(&cert->subjectPublicKeyInfo);
 }
 int
 SECKEY_ECParamsToKeySize(const SECItem *encodedParams)
 {
     SECOidTag tag;
     SECItem oid = { siBuffer, NULL, 0};
     /* The encodedParams data contains 0x06 (SEC_ASN1_OBJECT_ID),
      * followed by the length of the curve oid and the curve oid.
      */
     oid.len = encodedParams->data[1];
     oid.data = encodedParams->data + 2;
     if ((tag = SECOID_FindOIDTag(&oid)) == SEC_OID_UNKNOWN)
 	return 0;
     switch (tag) {
     case SEC_OID_SECG_EC_SECP112R1:
     case SEC_OID_SECG_EC_SECP112R2:
         return 112;
     case SEC_OID_SECG_EC_SECT113R1:
     case SEC_OID_SECG_EC_SECT113R2:
 	return 113;
     case SEC_OID_SECG_EC_SECP128R1:
     case SEC_OID_SECG_EC_SECP128R2:
 	return 128;
     case SEC_OID_SECG_EC_SECT131R1:
     case SEC_OID_SECG_EC_SECT131R2:
 	return 131;
     case SEC_OID_SECG_EC_SECP160K1:
     case SEC_OID_SECG_EC_SECP160R1:
     case SEC_OID_SECG_EC_SECP160R2:
 	return 160;
     case SEC_OID_SECG_EC_SECT163K1:
     case SEC_OID_SECG_EC_SECT163R1:
     case SEC_OID_SECG_EC_SECT163R2:
     case SEC_OID_ANSIX962_EC_C2PNB163V1:
     case SEC_OID_ANSIX962_EC_C2PNB163V2:
     case SEC_OID_ANSIX962_EC_C2PNB163V3:
 	return 163;
     case SEC_OID_ANSIX962_EC_C2PNB176V1:
 	return 176;
     case SEC_OID_ANSIX962_EC_C2TNB191V1:
     case SEC_OID_ANSIX962_EC_C2TNB191V2:
     case SEC_OID_ANSIX962_EC_C2TNB191V3:
     case SEC_OID_ANSIX962_EC_C2ONB191V4:
     case SEC_OID_ANSIX962_EC_C2ONB191V5:
 	return 191;
     case SEC_OID_SECG_EC_SECP192K1:
     case SEC_OID_ANSIX962_EC_PRIME192V1:
     case SEC_OID_ANSIX962_EC_PRIME192V2:
     case SEC_OID_ANSIX962_EC_PRIME192V3:
 	return 192;
     case SEC_OID_SECG_EC_SECT193R1:
     case SEC_OID_SECG_EC_SECT193R2:
 	return 193;
     case SEC_OID_ANSIX962_EC_C2PNB208W1:
 	return 208;
     case SEC_OID_SECG_EC_SECP224K1:
     case SEC_OID_SECG_EC_SECP224R1:
 	return 224;
     case SEC_OID_SECG_EC_SECT233K1:
     case SEC_OID_SECG_EC_SECT233R1:
 	return 233;
     case SEC_OID_SECG_EC_SECT239K1:
     case SEC_OID_ANSIX962_EC_C2TNB239V1:
     case SEC_OID_ANSIX962_EC_C2TNB239V2:
     case SEC_OID_ANSIX962_EC_C2TNB239V3:
     case SEC_OID_ANSIX962_EC_C2ONB239V4:
     case SEC_OID_ANSIX962_EC_C2ONB239V5:
     case SEC_OID_ANSIX962_EC_PRIME239V1:
     case SEC_OID_ANSIX962_EC_PRIME239V2:
     case SEC_OID_ANSIX962_EC_PRIME239V3:
 	return 239;
     case SEC_OID_SECG_EC_SECP256K1:
     case SEC_OID_ANSIX962_EC_PRIME256V1:
 	return 256;
     case SEC_OID_ANSIX962_EC_C2PNB272W1:
 	return 272;
     case SEC_OID_SECG_EC_SECT283K1:
     case SEC_OID_SECG_EC_SECT283R1:
 	return 283;
     case SEC_OID_ANSIX962_EC_C2PNB304W1:
 	return 304;
     case SEC_OID_ANSIX962_EC_C2TNB359V1:
 	return 359;
     case SEC_OID_ANSIX962_EC_C2PNB368W1:
 	return 368;
     case SEC_OID_SECG_EC_SECP384R1:
 	return 384;
     case SEC_OID_SECG_EC_SECT409K1:
     case SEC_OID_SECG_EC_SECT409R1:
 	return 409;
     case SEC_OID_ANSIX962_EC_C2TNB431R1:
 	return 431;
     case SEC_OID_SECG_EC_SECP521R1:
 	return 521;
     case SEC_OID_SECG_EC_SECT571K1:
     case SEC_OID_SECG_EC_SECT571R1:
 	return 571;
     default:
 	PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
 	return 0;
     }
 }
 int
 SECKEY_ECParamsToBasePointOrderLen(const SECItem *encodedParams)
 {
     SECOidTag tag;
     SECItem oid = { siBuffer, NULL, 0};
     /* The encodedParams data contains 0x06 (SEC_ASN1_OBJECT_ID),
      * followed by the length of the curve oid and the curve oid.
      */
     oid.len = encodedParams->data[1];
     oid.data = encodedParams->data + 2;
     if ((tag = SECOID_FindOIDTag(&oid)) == SEC_OID_UNKNOWN)
 	return 0;
     switch (tag) {
     case SEC_OID_SECG_EC_SECP112R1:
         return 112;
     case SEC_OID_SECG_EC_SECP112R2:
         return 110;
     case SEC_OID_SECG_EC_SECT113R1:
     case SEC_OID_SECG_EC_SECT113R2:
 	return 113;
     case SEC_OID_SECG_EC_SECP128R1:
 	return 128;
     case SEC_OID_SECG_EC_SECP128R2:
 	return 126;
     case SEC_OID_SECG_EC_SECT131R1:
     case SEC_OID_SECG_EC_SECT131R2:
 	return 131;
     case SEC_OID_SECG_EC_SECP160K1:
     case SEC_OID_SECG_EC_SECP160R1:
     case SEC_OID_SECG_EC_SECP160R2:
 	return 161;
     case SEC_OID_SECG_EC_SECT163K1:
 	return 163;
     case SEC_OID_SECG_EC_SECT163R1:
 	return 162;
     case SEC_OID_SECG_EC_SECT163R2:
     case SEC_OID_ANSIX962_EC_C2PNB163V1:
 	return 163;
     case SEC_OID_ANSIX962_EC_C2PNB163V2:
     case SEC_OID_ANSIX962_EC_C2PNB163V3:
 	return 162;
     case SEC_OID_ANSIX962_EC_C2PNB176V1:
 	return 161;
     case SEC_OID_ANSIX962_EC_C2TNB191V1:
 	return 191;
     case SEC_OID_ANSIX962_EC_C2TNB191V2:
 	return 190;
     case SEC_OID_ANSIX962_EC_C2TNB191V3:
 	return 189;
     case SEC_OID_ANSIX962_EC_C2ONB191V4:
 	return 191;
     case SEC_OID_ANSIX962_EC_C2ONB191V5:
 	return 188;
     case SEC_OID_SECG_EC_SECP192K1:
     case SEC_OID_ANSIX962_EC_PRIME192V1:
     case SEC_OID_ANSIX962_EC_PRIME192V2:
     case SEC_OID_ANSIX962_EC_PRIME192V3:
 	return 192;
     case SEC_OID_SECG_EC_SECT193R1:
     case SEC_OID_SECG_EC_SECT193R2:
 	return 193;
     case SEC_OID_ANSIX962_EC_C2PNB208W1:
 	return 193;
     case SEC_OID_SECG_EC_SECP224K1:
 	return 225;
     case SEC_OID_SECG_EC_SECP224R1:
 	return 224;
     case SEC_OID_SECG_EC_SECT233K1:
 	return 232;
     case SEC_OID_SECG_EC_SECT233R1:
 	return 233;
     case SEC_OID_SECG_EC_SECT239K1:
     case SEC_OID_ANSIX962_EC_C2TNB239V1:
 	return 238;
     case SEC_OID_ANSIX962_EC_C2TNB239V2:
 	return 237;
     case SEC_OID_ANSIX962_EC_C2TNB239V3:
 	return 236;
     case SEC_OID_ANSIX962_EC_C2ONB239V4:
 	return 238;
     case SEC_OID_ANSIX962_EC_C2ONB239V5:
 	return 237;
     case SEC_OID_ANSIX962_EC_PRIME239V1:
     case SEC_OID_ANSIX962_EC_PRIME239V2:
     case SEC_OID_ANSIX962_EC_PRIME239V3:
 	return 239;
     case SEC_OID_SECG_EC_SECP256K1:
     case SEC_OID_ANSIX962_EC_PRIME256V1:
 	return 256;
     case SEC_OID_ANSIX962_EC_C2PNB272W1:
 	return 257;
     case SEC_OID_SECG_EC_SECT283K1:
 	return 281;
     case SEC_OID_SECG_EC_SECT283R1:
 	return 282;
     case SEC_OID_ANSIX962_EC_C2PNB304W1:
 	return 289;
     case SEC_OID_ANSIX962_EC_C2TNB359V1:
 	return 353;
     case SEC_OID_ANSIX962_EC_C2PNB368W1:
 	return 353;
     case SEC_OID_SECG_EC_SECP384R1:
 	return 384;
     case SEC_OID_SECG_EC_SECT409K1:
 	return 407;
     case SEC_OID_SECG_EC_SECT409R1:
 	return 409;
     case SEC_OID_ANSIX962_EC_C2TNB431R1:
 	return 418;
     case SEC_OID_SECG_EC_SECP521R1:
 	return 521;
     case SEC_OID_SECG_EC_SECT571K1:
     case SEC_OID_SECG_EC_SECT571R1:
 	return 570;
     default:
 	PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
 	return 0;
     }
 }
 /* returns key strength in bytes (not bits) */
 unsigned
 SECKEY_PublicKeyStrength(const SECKEYPublicKey *pubk)
 {
     unsigned char b0;
     unsigned size;
     /* interpret modulus length as key strength */
     if (!pubk)
     	goto loser;
     switch (pubk->keyType) {
     case rsaKey:
 	if (!pubk->u.rsa.modulus.data) break;
     	b0 = pubk->u.rsa.modulus.data[0];
     	return b0 ? pubk->u.rsa.modulus.len : pubk->u.rsa.modulus.len - 1;
     case dsaKey:
 	if (!pubk->u.dsa.publicValue.data) break;
     	b0 = pubk->u.dsa.publicValue.data[0];
     	return b0 ? pubk->u.dsa.publicValue.len :
 	    pubk->u.dsa.publicValue.len - 1;
     case dhKey:
 	if (!pubk->u.dh.publicValue.data) break;
     	b0 = pubk->u.dh.publicValue.data[0];
     	return b0 ? pubk->u.dh.publicValue.len :
 	    pubk->u.dh.publicValue.len - 1;
     case ecKey:
 	/* Get the key size in bits and adjust */
 	size =	SECKEY_ECParamsToKeySize(&pubk->u.ec.DEREncodedParams);
 	return (size + 7)/8;
     default:
 	break;
     }
 loser:
     PORT_SetError(SEC_ERROR_INVALID_KEY);
     return 0;
 }
 /* returns key strength in bits */
 unsigned
 SECKEY_PublicKeyStrengthInBits(const SECKEYPublicKey *pubk)
 {
     unsigned size;
     switch (pubk->keyType) {
     case rsaKey:
     case dsaKey:
     case dhKey:
 	return SECKEY_PublicKeyStrength(pubk) * 8; /* 1 byte = 8 bits */
     case ecKey:
 	size = SECKEY_ECParamsToKeySize(&pubk->u.ec.DEREncodedParams);
 	return size;
     default:
 	break;
     }
     PORT_SetError(SEC_ERROR_INVALID_KEY);
     return 0;
 }
 /* returns signature length in bytes (not bits) */
 unsigned
 SECKEY_SignatureLen(const SECKEYPublicKey *pubk)
 {
     unsigned char b0;
     unsigned size;
     switch (pubk->keyType) {
     case rsaKey:
     	b0 = pubk->u.rsa.modulus.data[0];
     	return b0 ? pubk->u.rsa.modulus.len : pubk->u.rsa.modulus.len - 1;
     case dsaKey:
 	return pubk->u.dsa.params.subPrime.len * 2;
     case ecKey:
 	/* Get the base point order length in bits and adjust */
 	size =	SECKEY_ECParamsToBasePointOrderLen(
 		&pubk->u.ec.DEREncodedParams);
 	return ((size + 7)/8) * 2;
     default:
 	break;
     }
     PORT_SetError(SEC_ERROR_INVALID_KEY);
     return 0;
 }
 SECKEYPrivateKey *
 SECKEY_CopyPrivateKey(const SECKEYPrivateKey *privk)
 {
     SECKEYPrivateKey *copyk;
     PLArenaPool *arena;
     if (!privk || !privk->pkcs11Slot) {
 	PORT_SetError(SEC_ERROR_INVALID_ARGS);
 	return NULL;
     }
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL) {
 	return NULL;
     }
     copyk = (SECKEYPrivateKey *) PORT_ArenaZAlloc (arena, sizeof (SECKEYPrivateKey));
     if (copyk) {
 	copyk->arena = arena;
 	copyk->keyType = privk->keyType;
 	/* copy the PKCS #11 parameters */
 	copyk->pkcs11Slot = PK11_ReferenceSlot(privk->pkcs11Slot);
 	/* if the key we're referencing was a temparary key we have just
 	 * created, that we want to go away when we're through, we need
 	 * to make a copy of it */
 	if (privk->pkcs11IsTemp) {
 	    copyk->pkcs11ID =
 			PK11_CopyKey(privk->pkcs11Slot,privk->pkcs11ID);
 	    if (copyk->pkcs11ID == CK_INVALID_HANDLE) goto fail;
 	} else {
 	    copyk->pkcs11ID = privk->pkcs11ID;
 	}
 	copyk->pkcs11IsTemp = privk->pkcs11IsTemp;
 	copyk->wincx = privk->wincx;
 	copyk->staticflags = privk->staticflags;
 	return copyk;
     } else {
 	PORT_SetError (SEC_ERROR_NO_MEMORY);
     }
 fail:
     PORT_FreeArena (arena, PR_FALSE);
     return NULL;
 }
 SECKEYPublicKey *
 SECKEY_CopyPublicKey(const SECKEYPublicKey *pubk)
 {
     SECKEYPublicKey *copyk;
     PLArenaPool *arena;
     SECStatus rv = SECSuccess;
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL) {
 	PORT_SetError (SEC_ERROR_NO_MEMORY);
 	return NULL;
     }
     copyk = (SECKEYPublicKey *) PORT_ArenaZAlloc (arena, sizeof (SECKEYPublicKey));
     if (!copyk) {
         PORT_FreeArena (arena, PR_FALSE);
         PORT_SetError (SEC_ERROR_NO_MEMORY);
         return NULL;
     }
     copyk->arena = arena;
     copyk->keyType = pubk->keyType;
     if (pubk->pkcs11Slot &&
         PK11_IsPermObject(pubk->pkcs11Slot,pubk->pkcs11ID)) {
         copyk->pkcs11Slot = PK11_ReferenceSlot(pubk->pkcs11Slot);
         copyk->pkcs11ID = pubk->pkcs11ID;
     } else {
         copyk->pkcs11Slot = NULL;	/* go get own reference */
         copyk->pkcs11ID = CK_INVALID_HANDLE;
     }
     switch (pubk->keyType) {
       case rsaKey:
           rv = SECITEM_CopyItem(arena, &copyk->u.rsa.modulus,
                                 &pubk->u.rsa.modulus);
           if (rv == SECSuccess) {
               rv = SECITEM_CopyItem (arena, &copyk->u.rsa.publicExponent,
                                      &pubk->u.rsa.publicExponent);
               if (rv == SECSuccess)
                   return copyk;
           }
           break;
       case dsaKey:
           rv = SECITEM_CopyItem(arena, &copyk->u.dsa.publicValue,
                                 &pubk->u.dsa.publicValue);
           if (rv != SECSuccess) break;
           rv = SECITEM_CopyItem(arena, &copyk->u.dsa.params.prime,
                                 &pubk->u.dsa.params.prime);
           if (rv != SECSuccess) break;
           rv = SECITEM_CopyItem(arena, &copyk->u.dsa.params.subPrime,
                                 &pubk->u.dsa.params.subPrime);
           if (rv != SECSuccess) break;
           rv = SECITEM_CopyItem(arena, &copyk->u.dsa.params.base,
                                 &pubk->u.dsa.params.base);
           break;
       case dhKey:
           rv = SECITEM_CopyItem(arena,&copyk->u.dh.prime,&pubk->u.dh.prime);
           if (rv != SECSuccess) break;
           rv = SECITEM_CopyItem(arena,&copyk->u.dh.base,&pubk->u.dh.base);
           if (rv != SECSuccess) break;
           rv = SECITEM_CopyItem(arena, &copyk->u.dh.publicValue,
                                 &pubk->u.dh.publicValue);
           break;
       case ecKey:
           copyk->u.ec.size = pubk->u.ec.size;
           rv = SECITEM_CopyItem(arena,&copyk->u.ec.DEREncodedParams,
                                 &pubk->u.ec.DEREncodedParams);
           if (rv != SECSuccess) break;
           rv = SECITEM_CopyItem(arena,&copyk->u.ec.publicValue,
                                 &pubk->u.ec.publicValue);
           break;
       case nullKey:
           return copyk;
       default:
           PORT_SetError(SEC_ERROR_INVALID_KEY);
           rv = SECFailure;
           break;
     }
     if (rv == SECSuccess)
         return copyk;
     SECKEY_DestroyPublicKey (copyk);
     return NULL;
 }
 SECKEYPublicKey *
 SECKEY_ConvertToPublicKey(SECKEYPrivateKey *privk)
 {
     SECKEYPublicKey *pubk;
     PLArenaPool *arena;
     CERTCertificate *cert;
     SECStatus rv;
     /*
      * First try to look up the cert.
      */
     cert = PK11_GetCertFromPrivateKey(privk);
     if (cert) {
 	pubk = CERT_ExtractPublicKey(cert);
 	CERT_DestroyCertificate(cert);
 	return pubk;
     }
     /* couldn't find the cert, build pub key by hand */
     arena = PORT_NewArena (DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL) {
 	PORT_SetError (SEC_ERROR_NO_MEMORY);
 	return NULL;
     }
     pubk = (SECKEYPublicKey *)PORT_ArenaZAlloc(arena,
 						   sizeof (SECKEYPublicKey));
     if (pubk == NULL) {
 	PORT_FreeArena(arena,PR_FALSE);
 	return NULL;
     }
     pubk->keyType = privk->keyType;
     pubk->pkcs11Slot = NULL;
     pubk->pkcs11ID = CK_INVALID_HANDLE;
     pubk->arena = arena;
     switch(privk->keyType) {
       case nullKey:
       case dhKey:
       case dsaKey:
 	/* Nothing to query, if the cert isn't there, we're done -- no way
 	 * to get the public key */
 	break;
       case rsaKey:
 	rv = PK11_ReadAttribute(privk->pkcs11Slot,privk->pkcs11ID,
 				CKA_MODULUS,arena,&pubk->u.rsa.modulus);
 	if (rv != SECSuccess)  break;
 	rv = PK11_ReadAttribute(privk->pkcs11Slot,privk->pkcs11ID,
 			CKA_PUBLIC_EXPONENT,arena,&pubk->u.rsa.publicExponent);
 	if (rv != SECSuccess)  break;
 	return pubk;
 	break;
     default:
 	break;
     }
     PORT_FreeArena (arena, PR_FALSE);
     return NULL;
 }
 static CERTSubjectPublicKeyInfo *
 seckey_CreateSubjectPublicKeyInfo_helper(SECKEYPublicKey *pubk)
 {
     CERTSubjectPublicKeyInfo *spki;
     PLArenaPool *arena;
     SECItem params = { siBuffer, NULL, 0 };
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL) {
 	PORT_SetError(SEC_ERROR_NO_MEMORY);
 	return NULL;
     }
     spki = (CERTSubjectPublicKeyInfo *) PORT_ArenaZAlloc(arena, sizeof (*spki));
     if (spki != NULL) {
 	SECStatus rv;
 	SECItem *rv_item;
 	spki->arena = arena;
 	switch(pubk->keyType) {
 	  case rsaKey:
 	    rv = SECOID_SetAlgorithmID(arena, &spki->algorithm,
 				     SEC_OID_PKCS1_RSA_ENCRYPTION, 0);
 	    if (rv == SECSuccess) {
 		/*
 		 * DER encode the public key into the subjectPublicKeyInfo.
 		 */
 		prepare_rsa_pub_key_for_asn1(pubk);
 		rv_item = SEC_ASN1EncodeItem(arena, &spki->subjectPublicKey,
 					     pubk, SECKEY_RSAPublicKeyTemplate);
 		if (rv_item != NULL) {
 		    /*
 		     * The stored value is supposed to be a BIT_STRING,
 		     * so convert the length.
 		     */
 		    spki->subjectPublicKey.len <<= 3;
 		    /*
 		     * We got a good one; return it.
 		     */
 		    return spki;
 		}
 	    }
 	    break;
 	  case dsaKey:
 	    /* DER encode the params. */
 	    prepare_pqg_params_for_asn1(&pubk->u.dsa.params);
 	    rv_item = SEC_ASN1EncodeItem(arena, &params, &pubk->u.dsa.params,
 					 SECKEY_PQGParamsTemplate);
 	    if (rv_item != NULL) {
 		rv = SECOID_SetAlgorithmID(arena, &spki->algorithm,
 					   SEC_OID_ANSIX9_DSA_SIGNATURE,
 					   &params);
 		if (rv == SECSuccess) {
 		    /*
 		     * DER encode the public key into the subjectPublicKeyInfo.
 		     */
 		    prepare_dsa_pub_key_for_asn1(pubk);
 		    rv_item = SEC_ASN1EncodeItem(arena, &spki->subjectPublicKey,
 						 pubk,
 						 SECKEY_DSAPublicKeyTemplate);
 		    if (rv_item != NULL) {
 			/*
 			 * The stored value is supposed to be a BIT_STRING,
 			 * so convert the length.
 			 */
 			spki->subjectPublicKey.len <<= 3;
 			/*
 			 * We got a good one; return it.
 			 */
 			return spki;
 		    }
 		}
 	    }
 	    SECITEM_FreeItem(&params, PR_FALSE);
 	    break;
 	  case ecKey:
 	    rv = SECITEM_CopyItem(arena, &params,
 				  &pubk->u.ec.DEREncodedParams);
 	    if (rv != SECSuccess) break;
 	    rv = SECOID_SetAlgorithmID(arena, &spki->algorithm,
 				       SEC_OID_ANSIX962_EC_PUBLIC_KEY,
 				       &params);
 	    if (rv != SECSuccess) break;
 	    rv = SECITEM_CopyItem(arena, &spki->subjectPublicKey,
 				  &pubk->u.ec.publicValue);
 	    if (rv == SECSuccess) {
 	        /*
 		 * The stored value is supposed to be a BIT_STRING,
 		 * so convert the length.
 		 */
 	        spki->subjectPublicKey.len <<= 3;
 		/*
 		 * We got a good one; return it.
 		 */
 		return spki;
 	    }
 	    break;
 	  case dhKey: /* later... */
 	    break;
 	  default:
 	    break;
 	}
     } else {
 	PORT_SetError(SEC_ERROR_NO_MEMORY);
     }
     PORT_FreeArena(arena, PR_FALSE);
     return NULL;
 }
 CERTSubjectPublicKeyInfo *
 SECKEY_CreateSubjectPublicKeyInfo(const SECKEYPublicKey *pubk)
 {
     CERTSubjectPublicKeyInfo *spki;
     SECKEYPublicKey *tempKey;
     if (!pubk) {
         PORT_SetError(SEC_ERROR_INVALID_ARGS);
         return NULL;
     }
     tempKey = SECKEY_CopyPublicKey(pubk);
     if (!tempKey) {
         return NULL;
     }
     spki = seckey_CreateSubjectPublicKeyInfo_helper(tempKey);
     SECKEY_DestroyPublicKey(tempKey);
     return spki;
 }
 void
 SECKEY_DestroySubjectPublicKeyInfo(CERTSubjectPublicKeyInfo *spki)
 {
     if (spki && spki->arena) {
 	PORT_FreeArena(spki->arena, PR_FALSE);
     }
 }
 SECItem *
 SECKEY_EncodeDERSubjectPublicKeyInfo(const SECKEYPublicKey *pubk)
 {
     CERTSubjectPublicKeyInfo *spki=NULL;
     SECItem *spkiDER=NULL;
     /* get the subjectpublickeyinfo */
     spki = SECKEY_CreateSubjectPublicKeyInfo(pubk);
     if( spki == NULL ) {
 	goto finish;
     }
     /* DER-encode the subjectpublickeyinfo */
     spkiDER = SEC_ASN1EncodeItem(NULL /*arena*/, NULL/*dest*/, spki,
 					CERT_SubjectPublicKeyInfoTemplate);
     SECKEY_DestroySubjectPublicKeyInfo(spki);
 finish:
     return spkiDER;
 }
 CERTSubjectPublicKeyInfo *
 SECKEY_DecodeDERSubjectPublicKeyInfo(const SECItem *spkider)
 {
     PLArenaPool *arena;
     CERTSubjectPublicKeyInfo *spki;
     SECStatus rv;
     SECItem newSpkider;
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL) {
 	PORT_SetError(SEC_ERROR_NO_MEMORY);
 	return NULL;
     }
     spki = (CERTSubjectPublicKeyInfo *)
 		PORT_ArenaZAlloc(arena, sizeof (CERTSubjectPublicKeyInfo));
     if (spki != NULL) {
 	spki->arena = arena;
         /* copy the DER into the arena, since Quick DER returns data that points
            into the DER input, which may get freed by the caller */
         rv = SECITEM_CopyItem(arena, &newSpkider, spkider);
         if ( rv == SECSuccess ) {
             rv = SEC_QuickDERDecodeItem(arena,spki,
 				    CERT_SubjectPublicKeyInfoTemplate, &newSpkider);
         }
 	if (rv == SECSuccess)
 	    return spki;
     } else {
 	PORT_SetError(SEC_ERROR_NO_MEMORY);
     }
     PORT_FreeArena(arena, PR_FALSE);
     return NULL;
 }
 /*
  * Decode a base64 ascii encoded DER encoded subject public key info.
  */
 CERTSubjectPublicKeyInfo *
 SECKEY_ConvertAndDecodeSubjectPublicKeyInfo(const char *spkistr)
 {
     CERTSubjectPublicKeyInfo *spki;
     SECStatus rv;
     SECItem der;
     rv = ATOB_ConvertAsciiToItem(&der, spkistr);
     if (rv != SECSuccess)
 	return NULL;
     spki = SECKEY_DecodeDERSubjectPublicKeyInfo(&der);
     PORT_Free(der.data);
     return spki;
 }
 /*
  * Decode a base64 ascii encoded DER encoded public key and challenge
  * Verify digital signature and make sure challenge matches
  */
 CERTSubjectPublicKeyInfo *
 SECKEY_ConvertAndDecodePublicKeyAndChallenge(char *pkacstr, char *challenge,
 								void *wincx)
 {
     CERTSubjectPublicKeyInfo *spki = NULL;
     CERTPublicKeyAndChallenge pkac;
     SECStatus rv;
     SECItem signedItem;
     PLArenaPool *arena = NULL;
     CERTSignedData sd;
     SECItem sig;
     SECKEYPublicKey *pubKey = NULL;
     unsigned int len;
     signedItem.data = NULL;
     /* convert the base64 encoded data to binary */
     rv = ATOB_ConvertAsciiToItem(&signedItem, pkacstr);
     if (rv != SECSuccess) {
 	goto loser;
     }
     /* create an arena */
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL) {
 	goto loser;
     }
     /* decode the outer wrapping of signed data */
     PORT_Memset(&sd, 0, sizeof(CERTSignedData));
     rv = SEC_QuickDERDecodeItem(arena, &sd, CERT_SignedDataTemplate, &signedItem );
     if ( rv ) {
 	goto loser;
     }
     /* decode the public key and challenge wrapper */
     PORT_Memset(&pkac, 0, sizeof(CERTPublicKeyAndChallenge));
     rv = SEC_QuickDERDecodeItem(arena, &pkac, CERT_PublicKeyAndChallengeTemplate,
 			    &sd.data);
     if ( rv ) {
 	goto loser;
     }
     /* decode the subject public key info */
     spki = SECKEY_DecodeDERSubjectPublicKeyInfo(&pkac.spki);
     if ( spki == NULL ) {
 	goto loser;
     }
     /* get the public key */
     pubKey = seckey_ExtractPublicKey(spki);
     if ( pubKey == NULL ) {
 	goto loser;
     }
     /* check the signature */
     sig = sd.signature;
     DER_ConvertBitString(&sig);
     rv = VFY_VerifyDataWithAlgorithmID(sd.data.data, sd.data.len, pubKey, &sig,
 			&(sd.signatureAlgorithm), NULL, wincx);
     if ( rv != SECSuccess ) {
 	goto loser;
     }
     /* check the challenge */
     if ( challenge ) {
 	len = PORT_Strlen(challenge);
 	/* length is right */
 	if ( len != pkac.challenge.len ) {
 	    goto loser;
 	}
 	/* actual data is right */
 	if ( PORT_Memcmp(challenge, pkac.challenge.data, len) != 0 ) {
 	    goto loser;
 	}
     }
     goto done;
 loser:
     /* make sure that we return null if we got an error */
     if ( spki ) {
 	SECKEY_DestroySubjectPublicKeyInfo(spki);
     }
     spki = NULL;
 done:
     if ( signedItem.data ) {
 	PORT_Free(signedItem.data);
     }
     if ( arena ) {
 	PORT_FreeArena(arena, PR_FALSE);
     }
     if ( pubKey ) {
 	SECKEY_DestroyPublicKey(pubKey);
     }
     return spki;
 }
 void
 SECKEY_DestroyPrivateKeyInfo(SECKEYPrivateKeyInfo *pvk,
 			     PRBool freeit)
 {
     PLArenaPool *poolp;
     if(pvk != NULL) {
 	if(pvk->arena) {
 	    poolp = pvk->arena;
 	    /* zero structure since PORT_FreeArena does not support
 	     * this yet.
 	     */
 	    PORT_Memset(pvk->privateKey.data, 0, pvk->privateKey.len);
 	    PORT_Memset((char *)pvk, 0, sizeof(*pvk));
 	    if(freeit == PR_TRUE) {
 		PORT_FreeArena(poolp, PR_TRUE);
 	    } else {
 		pvk->arena = poolp;
 	    }
 	} else {
 	    SECITEM_ZfreeItem(&pvk->version, PR_FALSE);
 	    SECITEM_ZfreeItem(&pvk->privateKey, PR_FALSE);
 	    SECOID_DestroyAlgorithmID(&pvk->algorithm, PR_FALSE);
 	    PORT_Memset((char *)pvk, 0, sizeof(*pvk));
 	    if(freeit == PR_TRUE) {
 		PORT_Free(pvk);
 	    }
 	}
     }
 }
 void
 SECKEY_DestroyEncryptedPrivateKeyInfo(SECKEYEncryptedPrivateKeyInfo *epki,
 				      PRBool freeit)
 {
     PLArenaPool *poolp;
     if(epki != NULL) {
 	if(epki->arena) {
 	    poolp = epki->arena;
 	    /* zero structure since PORT_FreeArena does not support
 	     * this yet.
 	     */
 	    PORT_Memset(epki->encryptedData.data, 0, epki->encryptedData.len);
 	    PORT_Memset((char *)epki, 0, sizeof(*epki));
 	    if(freeit == PR_TRUE) {
 		PORT_FreeArena(poolp, PR_TRUE);
 	    } else {
 		epki->arena = poolp;
 	    }
 	} else {
 	    SECITEM_ZfreeItem(&epki->encryptedData, PR_FALSE);
 	    SECOID_DestroyAlgorithmID(&epki->algorithm, PR_FALSE);
 	    PORT_Memset((char *)epki, 0, sizeof(*epki));
 	    if(freeit == PR_TRUE) {
 		PORT_Free(epki);
 	    }
 	}
     }
 }
 SECStatus
 SECKEY_CopyPrivateKeyInfo(PLArenaPool *poolp,
 			  SECKEYPrivateKeyInfo *to,
 			  const SECKEYPrivateKeyInfo *from)
 {
     SECStatus rv = SECFailure;
     if((to == NULL) || (from == NULL)) {
 	return SECFailure;
     }
     rv = SECOID_CopyAlgorithmID(poolp, &to->algorithm, &from->algorithm);
     if(rv != SECSuccess) {
 	return SECFailure;
     }
     rv = SECITEM_CopyItem(poolp, &to->privateKey, &from->privateKey);
     if(rv != SECSuccess) {
 	return SECFailure;
     }
     rv = SECITEM_CopyItem(poolp, &to->version, &from->version);
     return rv;
 }
 SECStatus
 SECKEY_CopyEncryptedPrivateKeyInfo(PLArenaPool *poolp,
 				   SECKEYEncryptedPrivateKeyInfo *to,
 				   const SECKEYEncryptedPrivateKeyInfo *from)
 {
     SECStatus rv = SECFailure;
     if((to == NULL) || (from == NULL)) {
 	return SECFailure;
     }
     rv = SECOID_CopyAlgorithmID(poolp, &to->algorithm, &from->algorithm);
     if(rv != SECSuccess) {
 	return SECFailure;
     }
     rv = SECITEM_CopyItem(poolp, &to->encryptedData, &from->encryptedData);
     return rv;
 }
 KeyType
 SECKEY_GetPrivateKeyType(const SECKEYPrivateKey *privKey)
 {
    return privKey->keyType;
 }
 KeyType
 SECKEY_GetPublicKeyType(const SECKEYPublicKey *pubKey)
 {
    return pubKey->keyType;
 }
 SECKEYPublicKey*
 SECKEY_ImportDERPublicKey(const SECItem *derKey, CK_KEY_TYPE type)
 {
     SECKEYPublicKey *pubk = NULL;
     SECStatus rv = SECFailure;
     SECItem newDerKey;
     PLArenaPool *arena = NULL;
     if (!derKey) {
         return NULL;
     }
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if (arena == NULL) {
 	PORT_SetError(SEC_ERROR_NO_MEMORY);
         goto finish;
     }
     pubk = PORT_ArenaZNew(arena, SECKEYPublicKey);
     if (pubk == NULL) {
         goto finish;
     }
     pubk->arena = arena;
     rv = SECITEM_CopyItem(pubk->arena, &newDerKey, derKey);
     if (SECSuccess != rv) {
         goto finish;
     }
     pubk->pkcs11Slot = NULL;
     pubk->pkcs11ID = CK_INVALID_HANDLE;
     switch( type ) {
       case CKK_RSA:
 	prepare_rsa_pub_key_for_asn1(pubk);
         rv = SEC_QuickDERDecodeItem(pubk->arena, pubk, SECKEY_RSAPublicKeyTemplate, &newDerKey);
         pubk->keyType = rsaKey;
         break;
       case CKK_DSA:
 	prepare_dsa_pub_key_for_asn1(pubk);
         rv = SEC_QuickDERDecodeItem(pubk->arena, pubk, SECKEY_DSAPublicKeyTemplate, &newDerKey);
         pubk->keyType = dsaKey;
         break;
       case CKK_DH:
 	prepare_dh_pub_key_for_asn1(pubk);
         rv = SEC_QuickDERDecodeItem(pubk->arena, pubk, SECKEY_DHPublicKeyTemplate, &newDerKey);
         pubk->keyType = dhKey;
         break;
       default:
         rv = SECFailure;
         break;
     }
 finish:
     if (rv != SECSuccess) {
         if (arena != NULL) {
             PORT_FreeArena(arena, PR_FALSE);
         }
         pubk = NULL;
     }
     return pubk;
 }
 SECKEYPrivateKeyList*
 SECKEY_NewPrivateKeyList(void)
 {
     PLArenaPool *arena = NULL;
     SECKEYPrivateKeyList *ret = NULL;
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if ( arena == NULL ) {
         goto loser;
     }
     ret = (SECKEYPrivateKeyList *)PORT_ArenaZAlloc(arena,
                 sizeof(SECKEYPrivateKeyList));
     if ( ret == NULL ) {
         goto loser;
     }
     ret->arena = arena;
     PR_INIT_CLIST(&ret->list);
     return(ret);
 loser:
     if ( arena != NULL ) {
         PORT_FreeArena(arena, PR_FALSE);
     }
     return(NULL);
 }
 void
 SECKEY_DestroyPrivateKeyList(SECKEYPrivateKeyList *keys)
 {
     while( !PR_CLIST_IS_EMPTY(&keys->list) ) {
         SECKEY_RemovePrivateKeyListNode(
             (SECKEYPrivateKeyListNode*)(PR_LIST_HEAD(&keys->list)) );
     }
     PORT_FreeArena(keys->arena, PR_FALSE);
     return;
 }
 void
 SECKEY_RemovePrivateKeyListNode(SECKEYPrivateKeyListNode *node)
 {
     PR_ASSERT(node->key);
     SECKEY_DestroyPrivateKey(node->key);
     node->key = NULL;
     PR_REMOVE_LINK(&node->links);
     return;
 }
 SECStatus
 SECKEY_AddPrivateKeyToListTail( SECKEYPrivateKeyList *list,
                                 SECKEYPrivateKey *key)
 {
     SECKEYPrivateKeyListNode *node;
     node = (SECKEYPrivateKeyListNode *)PORT_ArenaZAlloc(list->arena,
                 sizeof(SECKEYPrivateKeyListNode));
     if ( node == NULL ) {
         goto loser;
     }
     PR_INSERT_BEFORE(&node->links, &list->list);
     node->key = key;
     return(SECSuccess);
 loser:
     return(SECFailure);
 }
 SECKEYPublicKeyList*
 SECKEY_NewPublicKeyList(void)
 {
     PLArenaPool *arena = NULL;
     SECKEYPublicKeyList *ret = NULL;
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if ( arena == NULL ) {
         goto loser;
     }
     ret = (SECKEYPublicKeyList *)PORT_ArenaZAlloc(arena,
                 sizeof(SECKEYPublicKeyList));
     if ( ret == NULL ) {
         goto loser;
     }
     ret->arena = arena;
     PR_INIT_CLIST(&ret->list);
     return(ret);
 loser:
     if ( arena != NULL ) {
         PORT_FreeArena(arena, PR_FALSE);
     }
     return(NULL);
 }
 void
 SECKEY_DestroyPublicKeyList(SECKEYPublicKeyList *keys)
 {
     while( !PR_CLIST_IS_EMPTY(&keys->list) ) {
         SECKEY_RemovePublicKeyListNode(
             (SECKEYPublicKeyListNode*)(PR_LIST_HEAD(&keys->list)) );
     }
     PORT_FreeArena(keys->arena, PR_FALSE);
     return;
 }
 void
 SECKEY_RemovePublicKeyListNode(SECKEYPublicKeyListNode *node)
 {
     PR_ASSERT(node->key);
     SECKEY_DestroyPublicKey(node->key);
     node->key = NULL;
     PR_REMOVE_LINK(&node->links);
     return;
 }
 SECStatus
 SECKEY_AddPublicKeyToListTail( SECKEYPublicKeyList *list,
                                 SECKEYPublicKey *key)
 {
     SECKEYPublicKeyListNode *node;
     node = (SECKEYPublicKeyListNode *)PORT_ArenaZAlloc(list->arena,
                 sizeof(SECKEYPublicKeyListNode));
     if ( node == NULL ) {
         goto loser;
     }
     PR_INSERT_BEFORE(&node->links, &list->list);
     node->key = key;
     return(SECSuccess);
 loser:
     return(SECFailure);
 }
 #define SECKEY_CacheAttribute(key, attribute) \
     if (CK_TRUE == PK11_HasAttributeSet(key->pkcs11Slot, key->pkcs11ID, attribute, PR_FALSE)) { \
         key->staticflags |= SECKEY_##attribute; \
     } else { \
         key->staticflags &= (~SECKEY_##attribute); \
     }
 SECStatus
 SECKEY_CacheStaticFlags(SECKEYPrivateKey* key)
 {
     SECStatus rv = SECFailure;
     if (key && key->pkcs11Slot && key->pkcs11ID) {
         key->staticflags |= SECKEY_Attributes_Cached;
         SECKEY_CacheAttribute(key, CKA_PRIVATE);
         SECKEY_CacheAttribute(key, CKA_ALWAYS_AUTHENTICATE);
         rv = SECSuccess;
     }
     return rv;
 }

The Tor Browser / annotate

security/nss/lib/cryptohi/seckey.c@b8a032363ba2 (annotated)

security/nss/lib/cryptohi/seckey.c