/*
* Lookup a certificate in the database by name
*/
CERTCertificate *
CERT_FindCertByNameString(CERTCertDBHandle *handle, char *nameStr)
{
CERTName *name;
SECItem *nameItem;
CERTCertificate *cert = NULL;
PRArenaPool *arena = NULL;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if ( arena == NULL ) {
goto loser;
}
name = CERT_AsciiToName(nameStr);
if ( name ) {
nameItem = SEC_ASN1EncodeItem (arena, NULL, (void *)name,
CERT_NameTemplate);
if ( nameItem != NULL ) {
cert = CERT_FindCertByName(handle, nameItem);
}
CERT_DestroyName(name);
}
loser:
if ( arena ) {
PORT_FreeArena(arena, PR_FALSE);
}
return(cert);
}
static CERTSignedCrl *
FindCRL(CERTCertDBHandle *certHandle, char *name, int type)
{
CERTSignedCrl *crl = NULL;
CERTCertificate *cert = NULL;
SECItem derName;
derName.data = NULL;
derName.len = 0;
cert = CERT_FindCertByNicknameOrEmailAddr(certHandle, name);
if (!cert) {
CERTName *certName = NULL;
PLArenaPool *arena = NULL;
SECStatus rv = SECSuccess;
certName = CERT_AsciiToName(name);
if (certName) {
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (arena) {
SECItem *nameItem =
SEC_ASN1EncodeItem(arena, NULL, (void *)certName,
SEC_ASN1_GET(CERT_NameTemplate));
if (nameItem) {
rv = SECITEM_CopyItem(NULL, &derName, nameItem);
}
PORT_FreeArena(arena, PR_FALSE);
}
CERT_DestroyName(certName);
}
if (rv != SECSuccess) {
SECU_PrintError(progName, "SECITEM_CopyItem failed, out of memory");
return ((CERTSignedCrl *)NULL);
}
if (!derName.len || !derName.data) {
SECU_PrintError(progName, "could not find certificate named '%s'", name);
return ((CERTSignedCrl *)NULL);
}
} else {
SECITEM_CopyItem(NULL, &derName, &cert->derSubject);
CERT_DestroyCertificate(cert);
}
crl = SEC_FindCrlByName(certHandle, &derName, type);
if (crl == NULL)
SECU_PrintError(progName, "could not find %s's CRL", name);
if (derName.data) {
SECITEM_FreeItem(&derName, PR_FALSE);
}
return (crl);
}
/******************************************************************
*
* m a k e _ c e r t _ r e q u e s t
*/
static CERTCertificateRequest*
make_cert_request(char *subject, SECKEYPublicKey *pubk)
{
CERTName * subj;
CERTSubjectPublicKeyInfo * spki;
CERTCertificateRequest * req;
/* Create info about public key */
spki = SECKEY_CreateSubjectPublicKeyInfo(pubk);
if (!spki) {
SECU_PrintError(progName, "unable to create subject public key");
exit (ERRX);
}
subj = CERT_AsciiToName (subject);
if (subj == NULL) {
FatalError("Invalid data in certificate description");
}
/* Generate certificate request */
req = CERT_CreateCertificateRequest(subj, spki, 0);
if (!req) {
SECU_PrintError(progName, "unable to make certificate request");
exit (ERRX);
}
SECKEY_DestroySubjectPublicKeyInfo(spki);
CERT_DestroyName(subj);
if (verbosity >= 0) {
PR_fprintf(outputFD, "certificate request generated\n");
}
return req;
}
static nsresult
GetAttestationCertificate(const UniquePK11SlotInfo& aSlot,
/*out*/ UniqueSECKEYPrivateKey& aAttestPrivKey,
/*out*/ UniqueCERTCertificate& aAttestCert,
const nsNSSShutDownPreventionLock& locker)
{
MOZ_ASSERT(aSlot);
if (NS_WARN_IF(!aSlot)) {
return NS_ERROR_INVALID_ARG;
}
UniqueSECKEYPublicKey pubKey;
// Construct an ephemeral keypair for this Attestation Certificate
nsresult rv = GenEcKeypair(aSlot, aAttestPrivKey, pubKey, locker);
if (NS_WARN_IF(NS_FAILED(rv) || !aAttestPrivKey || !pubKey)) {
MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
("Failed to gen keypair, NSS error #%d", PORT_GetError()));
return NS_ERROR_FAILURE;
}
// Construct the Attestation Certificate itself
UniqueCERTName subjectName(CERT_AsciiToName(kAttestCertSubjectName.get()));
if (NS_WARN_IF(!subjectName)) {
MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
("Failed to set subject name, NSS error #%d", PORT_GetError()));
return NS_ERROR_FAILURE;
}
UniqueCERTSubjectPublicKeyInfo spki(
SECKEY_CreateSubjectPublicKeyInfo(pubKey.get()));
if (NS_WARN_IF(!spki)) {
MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
("Failed to set SPKI, NSS error #%d", PORT_GetError()));
return NS_ERROR_FAILURE;
}
UniqueCERTCertificateRequest certreq(
CERT_CreateCertificateRequest(subjectName.get(), spki.get(), nullptr));
if (NS_WARN_IF(!certreq)) {
MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
("Failed to gen CSR, NSS error #%d", PORT_GetError()));
return NS_ERROR_FAILURE;
}
PRTime now = PR_Now();
PRTime notBefore = now - kExpirationSlack;
PRTime notAfter = now + kExpirationLife;
UniqueCERTValidity validity(CERT_CreateValidity(notBefore, notAfter));
if (NS_WARN_IF(!validity)) {
MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
("Failed to gen validity, NSS error #%d", PORT_GetError()));
return NS_ERROR_FAILURE;
}
unsigned long serial;
unsigned char* serialBytes =
mozilla::BitwiseCast<unsigned char*, unsigned long*>(&serial);
SECStatus srv = PK11_GenerateRandomOnSlot(aSlot.get(), serialBytes,
sizeof(serial));
if (NS_WARN_IF(srv != SECSuccess)) {
MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
("Failed to gen serial, NSS error #%d", PORT_GetError()));
return NS_ERROR_FAILURE;
}
// Ensure that the most significant bit isn't set (which would
// indicate a negative number, which isn't valid for serial
// numbers).
serialBytes[0] &= 0x7f;
// Also ensure that the least significant bit on the most
// significant byte is set (to prevent a leading zero byte,
// which also wouldn't be valid).
serialBytes[0] |= 0x01;
aAttestCert = UniqueCERTCertificate(
CERT_CreateCertificate(serial, subjectName.get(), validity.get(),
certreq.get()));
if (NS_WARN_IF(!aAttestCert)) {
MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
("Failed to gen certificate, NSS error #%d", PORT_GetError()));
return NS_ERROR_FAILURE;
}
PLArenaPool* arena = aAttestCert->arena;
srv = SECOID_SetAlgorithmID(arena, &aAttestCert->signature,
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE,
/* wincx */ nullptr);
if (NS_WARN_IF(srv != SECSuccess)) {
return NS_ERROR_FAILURE;
}
// Set version to X509v3.
*(aAttestCert->version.data) = SEC_CERTIFICATE_VERSION_3;
aAttestCert->version.len = 1;
SECItem innerDER = { siBuffer, nullptr, 0 };
if (NS_WARN_IF(!SEC_ASN1EncodeItem(arena, &innerDER, aAttestCert.get(),
SEC_ASN1_GET(CERT_CertificateTemplate)))) {
return NS_ERROR_FAILURE;
}
SECItem* signedCert = PORT_ArenaZNew(arena, SECItem);
if (NS_WARN_IF(!signedCert)) {
return NS_ERROR_FAILURE;
}
srv = SEC_DerSignData(arena, signedCert, innerDER.data, innerDER.len,
aAttestPrivKey.get(),
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE);
if (NS_WARN_IF(srv != SECSuccess)) {
return NS_ERROR_FAILURE;
}
aAttestCert->derCert = *signedCert;
MOZ_LOG(gNSSTokenLog, LogLevel::Debug,
("U2F Soft Token attestation certificate generated."));
return NS_OK;
}
nsresult Generate()
{
nsresult rv;
// Get the key slot for generation later
UniquePK11SlotInfo slot(PK11_GetInternalKeySlot());
if (!slot) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Remove existing certs with this name (if any)
rv = RemoveExisting();
if (NS_FAILED(rv)) {
return rv;
}
// Generate a new cert
NS_NAMED_LITERAL_CSTRING(commonNamePrefix, "CN=");
nsAutoCString subjectNameStr(commonNamePrefix + mNickname);
UniqueCERTName subjectName(CERT_AsciiToName(subjectNameStr.get()));
if (!subjectName) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Use the well-known NIST P-256 curve
SECOidData* curveOidData = SECOID_FindOIDByTag(SEC_OID_SECG_EC_SECP256R1);
if (!curveOidData) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Get key params from the curve
ScopedAutoSECItem keyParams(2 + curveOidData->oid.len);
keyParams.data[0] = SEC_ASN1_OBJECT_ID;
keyParams.data[1] = curveOidData->oid.len;
memcpy(keyParams.data + 2, curveOidData->oid.data, curveOidData->oid.len);
// Generate cert key pair
SECKEYPublicKey* tempPublicKey;
UniqueSECKEYPrivateKey privateKey(
PK11_GenerateKeyPair(slot.get(), CKM_EC_KEY_PAIR_GEN, &keyParams,
&tempPublicKey, true /* token */,
true /* sensitive */, nullptr));
UniqueSECKEYPublicKey publicKey(tempPublicKey);
tempPublicKey = nullptr;
if (!privateKey || !publicKey) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Create subject public key info and cert request
UniqueCERTSubjectPublicKeyInfo spki(
SECKEY_CreateSubjectPublicKeyInfo(publicKey.get()));
if (!spki) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
UniqueCERTCertificateRequest certRequest(
CERT_CreateCertificateRequest(subjectName.get(), spki.get(), nullptr));
if (!certRequest) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Valid from one day before to 1 year after
static const PRTime oneDay = PRTime(PR_USEC_PER_SEC)
* PRTime(60) // sec
* PRTime(60) // min
* PRTime(24); // hours
PRTime now = PR_Now();
PRTime notBefore = now - oneDay;
PRTime notAfter = now + (PRTime(365) * oneDay);
UniqueCERTValidity validity(CERT_CreateValidity(notBefore, notAfter));
if (!validity) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Generate random serial
unsigned long serial;
// This serial in principle could collide, but it's unlikely
rv = MapSECStatus(PK11_GenerateRandomOnSlot(
slot.get(), BitwiseCast<unsigned char*, unsigned long*>(&serial),
sizeof(serial)));
if (NS_FAILED(rv)) {
return rv;
}
// Create the cert from these pieces
UniqueCERTCertificate cert(
CERT_CreateCertificate(serial, subjectName.get(), validity.get(),
certRequest.get()));
if (!cert) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Update the cert version to X509v3
if (!cert->version.data) {
return NS_ERROR_INVALID_POINTER;
}
*(cert->version.data) = SEC_CERTIFICATE_VERSION_3;
cert->version.len = 1;
// Set cert signature algorithm
PLArenaPool* arena = cert->arena;
if (!arena) {
return NS_ERROR_INVALID_POINTER;
}
rv = MapSECStatus(
SECOID_SetAlgorithmID(arena, &cert->signature,
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE, 0));
if (NS_FAILED(rv)) {
return rv;
}
// Encode and self-sign the cert
UniqueSECItem certDER(
SEC_ASN1EncodeItem(nullptr, nullptr, cert.get(),
SEC_ASN1_GET(CERT_CertificateTemplate)));
if (!certDER) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
rv = MapSECStatus(
SEC_DerSignData(arena, &cert->derCert, certDER->data, certDER->len,
privateKey.get(),
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE));
if (NS_FAILED(rv)) {
return rv;
}
// Create a CERTCertificate from the signed data
UniqueCERTCertificate certFromDER(
CERT_NewTempCertificate(CERT_GetDefaultCertDB(), &cert->derCert, nullptr,
true /* perm */, true /* copyDER */));
if (!certFromDER) {
return mozilla::psm::GetXPCOMFromNSSError(PR_GetError());
}
// Save the cert in the DB
rv = MapSECStatus(PK11_ImportCert(slot.get(), certFromDER.get(),
CK_INVALID_HANDLE, mNickname.get(),
false /* unused */));
if (NS_FAILED(rv)) {
return rv;
}
// We should now have cert in the DB, read it back in nsIX509Cert form
return GetFromDB();
}
/*
* FUNCTION: PKIX_PL_GeneralName_Create (see comments in pkix_pl_pki.h)
*/
PKIX_Error *
PKIX_PL_GeneralName_Create(
PKIX_UInt32 nameType,
PKIX_PL_String *stringRep,
PKIX_PL_GeneralName **pGName,
void *plContext)
{
PKIX_PL_X500Name *pkixDN = NULL;
PKIX_PL_OID *pkixOID = NULL;
SECItem *secItem = NULL;
char *asciiString = NULL;
PKIX_UInt32 length = 0;
PKIX_PL_GeneralName *genName = NULL;
CERTGeneralName *nssGenName = NULL;
CERTGeneralNameList *nssGenNameList = NULL;
CERTName *nssCertName = NULL;
PLArenaPool *arena = NULL;
PKIX_ENTER(GENERALNAME, "PKIX_PL_GeneralName_Create");
PKIX_NULLCHECK_TWO(pGName, stringRep);
PKIX_CHECK(PKIX_PL_String_GetEncoded
(stringRep,
PKIX_ESCASCII,
(void **)&asciiString,
&length,
plContext),
PKIX_STRINGGETENCODEDFAILED);
/* Create a temporary CERTGeneralName */
PKIX_GENERALNAME_DEBUG("\t\tCalling PL_strlen).\n");
length = PL_strlen(asciiString);
PKIX_GENERALNAME_DEBUG("\t\tCalling SECITEM_AllocItem).\n");
secItem = SECITEM_AllocItem(NULL, NULL, length);
PKIX_GENERALNAME_DEBUG("\t\tCalling PORT_Memcpy).\n");
(void) PORT_Memcpy(secItem->data, asciiString, length);
PKIX_CERT_DEBUG("\t\tCalling PORT_NewArena).\n");
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (arena == NULL) {
PKIX_ERROR(PKIX_OUTOFMEMORY);
}
PKIX_GENERALNAME_DEBUG("\t\tCalling CERT_NewGeneralName).\n");
nssGenName = CERT_NewGeneralName(arena, nameType);
if (nssGenName == NULL) {
PKIX_ERROR(PKIX_ALLOCATENEWCERTGENERALNAMEFAILED);
}
switch (nameType) {
case certRFC822Name:
case certDNSName:
case certURI:
nssGenName->name.other = *secItem;
break;
case certDirectoryName:
PKIX_CHECK(PKIX_PL_X500Name_Create
(stringRep, &pkixDN, plContext),
PKIX_X500NAMECREATEFAILED);
PKIX_GENERALNAME_DEBUG("\t\tCalling CERT_AsciiToName).\n");
nssCertName = CERT_AsciiToName(asciiString);
nssGenName->name.directoryName = *nssCertName;
break;
case certRegisterID:
PKIX_CHECK(PKIX_PL_OID_Create
(asciiString, &pkixOID, plContext),
PKIX_OIDCREATEFAILED);
nssGenName->name.other = *secItem;
break;
default:
/* including IPAddress, EDIPartyName, OtherName, X400Address */
PKIX_ERROR(PKIX_UNABLETOCREATEGENERALNAMEOFTHISTYPE);
}
/* create a PKIX_PL_GeneralName object */
PKIX_CHECK(PKIX_PL_Object_Alloc
(PKIX_GENERALNAME_TYPE,
sizeof (PKIX_PL_GeneralName),
(PKIX_PL_Object **)&genName,
plContext),
PKIX_COULDNOTCREATEOBJECT);
/* create a CERTGeneralNameList */
nssGenName->type = nameType;
PKIX_GENERALNAME_DEBUG("\t\tCalling CERT_CreateGeneralNameList).\n");
nssGenNameList = CERT_CreateGeneralNameList(nssGenName);
if (nssGenNameList == NULL) {
PKIX_ERROR(PKIX_CERTCREATEGENERALNAMELISTFAILED);
}
genName->nssGeneralNameList = nssGenNameList;
/* initialize fields */
genName->type = nameType;
genName->directoryName = pkixDN;
genName->OthName = NULL;
genName->other = secItem;
genName->oid = pkixOID;
*pGName = genName;
cleanup:
PKIX_FREE(asciiString);
if (nssCertName != NULL) {
PKIX_CERT_DEBUG("\t\tCalling CERT_DestroyName).\n");
CERT_DestroyName(nssCertName);
}
if (arena){ /* will free nssGenName */
PKIX_CERT_DEBUG("\t\tCalling PORT_FreeArena).\n");
PORT_FreeArena(arena, PR_FALSE);
}
if (PKIX_ERROR_RECEIVED){
PKIX_DECREF(pkixDN);
PKIX_DECREF(pkixOID);
PKIX_GENERALNAME_DEBUG("\t\tCalling SECITEM_FreeItem).\n");
if (secItem){
SECITEM_FreeItem(secItem, PR_TRUE);
secItem = NULL;
}
}
PKIX_RETURN(GENERALNAME);
}
RefPtr<DtlsIdentity> DtlsIdentity::Generate() {
UniquePK11SlotInfo slot(PK11_GetInternalSlot());
if (!slot) {
return nullptr;
}
uint8_t random_name[16];
SECStatus rv = PK11_GenerateRandomOnSlot(slot.get(), random_name,
sizeof(random_name));
if (rv != SECSuccess)
return nullptr;
std::string name;
char chunk[3];
for (size_t i = 0; i < sizeof(random_name); ++i) {
SprintfLiteral(chunk, "%.2x", random_name[i]);
name += chunk;
}
std::string subject_name_string = "CN=" + name;
UniqueCERTName subject_name(CERT_AsciiToName(subject_name_string.c_str()));
if (!subject_name) {
return nullptr;
}
unsigned char paramBuf[12]; // OIDs are small
SECItem ecdsaParams = { siBuffer, paramBuf, sizeof(paramBuf) };
SECOidData* oidData = SECOID_FindOIDByTag(SEC_OID_SECG_EC_SECP256R1);
if (!oidData || (oidData->oid.len > (sizeof(paramBuf) - 2))) {
return nullptr;
}
ecdsaParams.data[0] = SEC_ASN1_OBJECT_ID;
ecdsaParams.data[1] = oidData->oid.len;
memcpy(ecdsaParams.data + 2, oidData->oid.data, oidData->oid.len);
ecdsaParams.len = oidData->oid.len + 2;
SECKEYPublicKey *pubkey;
UniqueSECKEYPrivateKey private_key(
PK11_GenerateKeyPair(slot.get(),
CKM_EC_KEY_PAIR_GEN, &ecdsaParams, &pubkey,
PR_FALSE, PR_TRUE, nullptr));
if (private_key == nullptr)
return nullptr;
UniqueSECKEYPublicKey public_key(pubkey);
pubkey = nullptr;
UniqueCERTSubjectPublicKeyInfo spki(
SECKEY_CreateSubjectPublicKeyInfo(public_key.get()));
if (!spki) {
return nullptr;
}
UniqueCERTCertificateRequest certreq(
CERT_CreateCertificateRequest(subject_name.get(), spki.get(), nullptr));
if (!certreq) {
return nullptr;
}
// From 1 day before todayto 30 days after.
// This is a sort of arbitrary range designed to be valid
// now with some slack in case the other side expects
// some before expiry.
//
// Note: explicit casts necessary to avoid
// warning C4307: '*' : integral constant overflow
static const PRTime oneDay = PRTime(PR_USEC_PER_SEC)
* PRTime(60) // sec
* PRTime(60) // min
* PRTime(24); // hours
PRTime now = PR_Now();
PRTime notBefore = now - oneDay;
PRTime notAfter = now + (PRTime(30) * oneDay);
UniqueCERTValidity validity(CERT_CreateValidity(notBefore, notAfter));
if (!validity) {
return nullptr;
}
unsigned long serial;
// Note: This serial in principle could collide, but it's unlikely
rv = PK11_GenerateRandomOnSlot(slot.get(),
reinterpret_cast<unsigned char *>(&serial),
sizeof(serial));
if (rv != SECSuccess) {
return nullptr;
}
UniqueCERTCertificate certificate(
CERT_CreateCertificate(serial, subject_name.get(), validity.get(),
certreq.get()));
if (!certificate) {
return nullptr;
}
PLArenaPool *arena = certificate->arena;
rv = SECOID_SetAlgorithmID(arena, &certificate->signature,
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE, 0);
if (rv != SECSuccess)
return nullptr;
// Set version to X509v3.
*(certificate->version.data) = SEC_CERTIFICATE_VERSION_3;
certificate->version.len = 1;
SECItem innerDER;
innerDER.len = 0;
innerDER.data = nullptr;
if (!SEC_ASN1EncodeItem(arena, &innerDER, certificate.get(),
SEC_ASN1_GET(CERT_CertificateTemplate))) {
return nullptr;
}
SECItem *signedCert = PORT_ArenaZNew(arena, SECItem);
if (!signedCert) {
return nullptr;
}
rv = SEC_DerSignData(arena, signedCert, innerDER.data, innerDER.len,
private_key.get(),
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE);
if (rv != SECSuccess) {
return nullptr;
}
certificate->derCert = *signedCert;
RefPtr<DtlsIdentity> identity = new DtlsIdentity(Move(private_key),
Move(certificate),
ssl_kea_ecdh);
return identity.forget();
}
