CERTAVA *
CERT_CopyAVA(PLArenaPool *arena, CERTAVA *from)
{
CERTAVA *ava;
int rv;
ava = (CERTAVA *)PORT_ArenaZAlloc(arena, sizeof(CERTAVA));
if (ava) {
rv = SECITEM_CopyItem(arena, &ava->type, &from->type);
if (rv)
goto loser;
rv = SECITEM_CopyItem(arena, &ava->value, &from->value);
if (rv)
goto loser;
}
return ava;
loser:
return 0;
}
/*
* NSS_CMSAttribute_Create - create an attribute
*
* if value is NULL, the attribute won't have a value. It can be added later
* with NSS_CMSAttribute_AddValue.
*/
NSSCMSAttribute *
NSS_CMSAttribute_Create(PRArenaPool *poolp, SECOidTag oidtag, SECItem *value, PRBool encoded)
{
NSSCMSAttribute *attr;
SECItem *copiedvalue;
void *mark;
PORT_Assert (poolp != NULL);
mark = PORT_ArenaMark (poolp);
attr = (NSSCMSAttribute *)PORT_ArenaZAlloc(poolp, sizeof(NSSCMSAttribute));
if (attr == NULL)
goto loser;
attr->typeTag = SECOID_FindOIDByTag(oidtag);
if (attr->typeTag == NULL)
goto loser;
if (SECITEM_CopyItem(poolp, &(attr->type), &(attr->typeTag->oid)) != SECSuccess)
goto loser;
if (value != NULL) {
if ((copiedvalue = SECITEM_ArenaDupItem(poolp, value)) == NULL)
goto loser;
if (NSS_CMSArray_Add(poolp, (void ***)&(attr->values), (void *)copiedvalue) != SECSuccess)
goto loser;
}
attr->encoded = encoded;
PORT_ArenaUnmark (poolp, mark);
return attr;
loser:
PORT_Assert (mark != NULL);
PORT_ArenaRelease (poolp, mark);
return NULL;
}
/* allocate space for a PFX structure and set up initial
* arena pool. pfx structure is cleared and a pointer to
* the new structure is returned.
*/
SEC_PKCS12AuthenticatedSafe *
sec_pkcs12_new_asafe(PLArenaPool *poolp)
{
SEC_PKCS12AuthenticatedSafe *asafe = NULL;
void *mark;
mark = PORT_ArenaMark(poolp);
asafe = (SEC_PKCS12AuthenticatedSafe *)PORT_ArenaZAlloc(poolp,
sizeof(SEC_PKCS12AuthenticatedSafe));
if(asafe == NULL)
goto loser;
asafe->poolp = poolp;
PORT_Memset(&asafe->old_baggage, 0, sizeof(SEC_PKCS7ContentInfo));
PORT_ArenaUnmark(poolp, mark);
return asafe;
loser:
PORT_ArenaRelease(poolp, mark);
return NULL;
}
/* allocate space for a PFX structure and set up initial
* arena pool. pfx structure is cleared and a pointer to
* the new structure is returned.
*/
SEC_PKCS12PFXItem *
sec_pkcs12_new_pfx(void)
{
SEC_PKCS12PFXItem *pfx = NULL;
PLArenaPool *poolp = NULL;
poolp = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE); /* XXX Different size? */
if(poolp == NULL)
goto loser;
pfx = (SEC_PKCS12PFXItem *)PORT_ArenaZAlloc(poolp,
sizeof(SEC_PKCS12PFXItem));
if(pfx == NULL)
goto loser;
pfx->poolp = poolp;
return pfx;
loser:
PORT_FreeArena(poolp, PR_TRUE);
return NULL;
}
/*
* SecCmsMessageCreate - create a CMS message object
*
* "poolp" - arena to allocate memory from, or NULL if new arena should be created
*/
SecCmsMessageRef
SecCmsMessageCreate(void)
{
PLArenaPool *poolp;
SecCmsMessageRef cmsg;
poolp = PORT_NewArena (1024); /* XXX what is right value? */
if (poolp == NULL)
return NULL;
cmsg = (SecCmsMessageRef)PORT_ArenaZAlloc (poolp, sizeof(SecCmsMessage));
if (cmsg == NULL) {
PORT_FreeArena(poolp, PR_FALSE);
return NULL;
}
cmsg->poolp = poolp;
cmsg->contentInfo.cmsg = cmsg;
cmsg->refCount = 1;
return cmsg;
}
/* compute the thumbprint of the DER cert and create a digest info
* to store it in and return the digest info.
* a return of NULL indicates an error.
*/
SGNDigestInfo *
sec_pkcs12_compute_thumbprint(SECItem *der_cert)
{
SGNDigestInfo *thumb = NULL;
SECItem digest;
PRArenaPool *temparena = NULL;
SECStatus rv = SECFailure;
if(der_cert == NULL)
return NULL;
temparena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if(temparena == NULL) {
return NULL;
}
digest.data = (unsigned char *)PORT_ArenaZAlloc(temparena,
sizeof(unsigned char) *
SHA1_LENGTH);
/* digest data and create digest info */
if(digest.data != NULL) {
digest.len = SHA1_LENGTH;
rv = PK11_HashBuf(SEC_OID_SHA1, digest.data, der_cert->data,
der_cert->len);
if(rv == SECSuccess) {
thumb = SGN_CreateDigestInfo(SEC_OID_SHA1,
digest.data,
digest.len);
} else {
PORT_SetError(SEC_ERROR_NO_MEMORY);
}
} else {
PORT_SetError(SEC_ERROR_NO_MEMORY);
}
PORT_FreeArena(temparena, PR_TRUE);
return thumb;
}
/*
* NSS_CMSMessage_Create - create a CMS message object
*
* "poolp" - arena to allocate memory from, or NULL if new arena should be created
*/
NSSCMSMessage *
NSS_CMSMessage_Create(PLArenaPool *poolp)
{
void *mark = NULL;
NSSCMSMessage *cmsg;
PRBool poolp_is_ours = PR_FALSE;
if (poolp == NULL) {
poolp = PORT_NewArena (1024); /* XXX what is right value? */
if (poolp == NULL)
return NULL;
poolp_is_ours = PR_TRUE;
}
if (!poolp_is_ours)
mark = PORT_ArenaMark(poolp);
cmsg = (NSSCMSMessage *)PORT_ArenaZAlloc (poolp, sizeof(NSSCMSMessage));
if (cmsg == NULL) {
if (!poolp_is_ours) {
if (mark) {
PORT_ArenaRelease(poolp, mark);
}
} else
PORT_FreeArena(poolp, PR_FALSE);
return NULL;
}
NSS_CMSContentInfo_Private_Init(&(cmsg->contentInfo));
cmsg->poolp = poolp;
cmsg->poolp_is_ours = poolp_is_ours;
cmsg->refCount = 1;
if (mark)
PORT_ArenaUnmark(poolp, mark);
return cmsg;
}
SECStatus
NSS_CMSSignedData_AddDigest(PLArenaPool *poolp,
NSSCMSSignedData *sigd,
SECOidTag digestalgtag,
SECItem *digest)
{
SECAlgorithmID *digestalg;
void *mark;
if (!sigd || !poolp) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
mark = PORT_ArenaMark(poolp);
digestalg = PORT_ArenaZAlloc(poolp, sizeof(SECAlgorithmID));
if (digestalg == NULL)
goto loser;
if (SECOID_SetAlgorithmID(poolp, digestalg, digestalgtag, NULL) != SECSuccess) /* no params */
goto loser;
if (NSS_CMSArray_Add(poolp, (void ***)&(sigd->digestAlgorithms),
(void *)digestalg) != SECSuccess ||
/* even if digest is NULL, add dummy to have same-size array */
NSS_CMSArray_Add(poolp, (void ***)&(sigd->digests),
(void *)digest) != SECSuccess) {
goto loser;
}
PORT_ArenaUnmark(poolp, mark);
return SECSuccess;
loser:
PORT_ArenaRelease(poolp, mark);
return SECFailure;
}
static
CERTCertificate *createEmptyCertificate(void)
{
PLArenaPool *arena = 0;
CERTCertificate *c = 0;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if ( !arena ) {
return 0;
}
c = (CERTCertificate *) PORT_ArenaZAlloc(arena, sizeof(CERTCertificate));
if (c) {
c->referenceCount = 1;
c->arena = arena;
} else {
PORT_FreeArena(arena,PR_TRUE);
}
return c;
}
CERTAVA *
CERT_CreateAVAFromSECItem(PRArenaPool *arena, SECOidTag kind, int valueType,
SECItem *value)
{
CERTAVA *ava;
int rv;
unsigned maxLen;
ava = (CERTAVA*) PORT_ArenaZAlloc(arena, sizeof(CERTAVA));
if (ava) {
rv = SetupAVAType(arena, kind, &ava->type, &maxLen);
if (rv) {
/* Illegal AVA type */
return NULL;
}
rv = SetupAVAValue(arena, valueType, value, &ava->value, maxLen);
if (rv) {
/* Illegal value type */
return NULL;
}
}
return ava;
}
static PQGParams *
decode_pqg_params(char *aStr)
{
unsigned char *buf = nullptr;
unsigned int len;
PLArenaPool *arena = nullptr;
PQGParams *params = nullptr;
SECStatus status;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (!arena)
return nullptr;
params = static_cast<PQGParams*>(PORT_ArenaZAlloc(arena, sizeof(PQGParams)));
if (!params)
goto loser;
params->arena = arena;
buf = ATOB_AsciiToData(aStr, &len);
if ((!buf) || (len == 0))
goto loser;
status = SEC_ASN1Decode(arena, params, SECKEY_PQGParamsTemplate, (const char*)buf, len);
if (status != SECSuccess)
goto loser;
return params;
loser:
if (arena) {
PORT_FreeArena(arena, false);
}
if (buf) {
PR_Free(buf);
}
return nullptr;
}
static char *
nssutil_formatValue(PRArenaPool *arena, char *value, char quote)
{
char *vp,*vp2,*retval;
int size = 0, escapes = 0;
for (vp=value; *vp ;vp++) {
if ((*vp == quote) || (*vp == NSSUTIL_ARG_ESCAPE)) escapes++;
size++;
}
if (arena) {
retval = PORT_ArenaZAlloc(arena,size+escapes+1);
} else {
retval = PORT_ZAlloc(size+escapes+1);
}
if (retval == NULL) return NULL;
vp2 = retval;
for (vp=value; *vp; vp++) {
if ((*vp == quote) || (*vp == NSSUTIL_ARG_ESCAPE))
*vp2++ = NSSUTIL_ARG_ESCAPE;
*vp2++ = *vp;
}
return retval;
}
static long
smime_choose_cipher(CERTCertificate *scert, CERTCertificate **rcerts)
{
PLArenaPool *poolp;
long chosen_cipher;
int *cipher_abilities;
int *cipher_votes;
int strong_mapi;
int rcount, mapi, max;
if (smime_policy_bits == 0) {
PORT_SetError(SEC_ERROR_BAD_EXPORT_ALGORITHM);
return -1;
}
chosen_cipher = SMIME_RC2_CBC_40; /* the default, LCD */
poolp = PORT_NewArena(1024); /* XXX what is right value? */
if (poolp == NULL)
goto done;
cipher_abilities = (int *)PORT_ArenaZAlloc(poolp,
smime_symmetric_count * sizeof(int));
if (cipher_abilities == NULL)
goto done;
cipher_votes = (int *)PORT_ArenaZAlloc(poolp,
smime_symmetric_count * sizeof(int));
if (cipher_votes == NULL)
goto done;
/*
* XXX Should have a #define somewhere which specifies default
* strong cipher. (Or better, a way to configure.)
*/
/* Make triple-DES the strong cipher. */
strong_mapi = smime_mapi_by_cipher(SMIME_DES_EDE3_168);
PORT_Assert(strong_mapi >= 0);
for (rcount = 0; rcerts[rcount] != NULL; rcount++) {
SECItem *profile;
smime_capability **caps;
int capi, pref;
SECStatus dstat;
pref = smime_symmetric_count;
profile = CERT_FindSMimeProfile(rcerts[rcount]);
if (profile != NULL && profile->data != NULL && profile->len > 0) {
caps = NULL;
dstat = SEC_QuickDERDecodeItem(poolp, &caps,
smime_capabilities_template,
profile);
if (dstat == SECSuccess && caps != NULL) {
for (capi = 0; caps[capi] != NULL; capi++) {
smime_fill_capability(caps[capi]);
mapi = smime_mapi_by_cipher(caps[capi]->cipher);
if (mapi >= 0) {
cipher_abilities[mapi]++;
cipher_votes[mapi] += pref;
--pref;
}
}
}
} else {
SECKEYPublicKey *key;
unsigned int pklen_bits;
/*
* XXX This is probably only good for RSA keys. What I would
* really like is a function to just say; Is the public key in
* this cert an export-length key? Then I would not have to
* know things like the value 512, or the kind of key, or what
* a subjectPublicKeyInfo is, etc.
*/
key = CERT_ExtractPublicKey(rcerts[rcount]);
if (key != NULL) {
pklen_bits = SECKEY_PublicKeyStrength(key) * 8;
SECKEY_DestroyPublicKey(key);
if (pklen_bits > 512) {
cipher_abilities[strong_mapi]++;
cipher_votes[strong_mapi] += pref;
}
}
}
if (profile != NULL)
SECITEM_FreeItem(profile, PR_TRUE);
}
max = 0;
for (mapi = 0; mapi < smime_symmetric_count; mapi++) {
if (cipher_abilities[mapi] != rcount)
continue;
if (!smime_cipher_allowed(smime_cipher_maps[mapi].cipher))
continue;
if (cipher_votes[mapi] > max) {
chosen_cipher = smime_cipher_maps[mapi].cipher;
max = cipher_votes[mapi];
} /* XXX else if a tie, let scert break it? */
}
done:
if (poolp != NULL)
PORT_FreeArena(poolp, PR_FALSE);
return chosen_cipher;
}
NSSCMSRecipientInfo *
nss_cmsrecipientinfo_create(NSSCMSMessage *cmsg,
NSSCMSRecipientIDSelector type,
CERTCertificate *cert,
SECKEYPublicKey *pubKey,
SECItem *subjKeyID,
void* pwfn_arg,
SECItem* DERinput)
{
NSSCMSRecipientInfo *ri;
void *mark;
SECOidTag certalgtag;
SECStatus rv = SECSuccess;
NSSCMSRecipientEncryptedKey *rek;
NSSCMSOriginatorIdentifierOrKey *oiok;
unsigned long version;
SECItem *dummy;
PLArenaPool *poolp;
CERTSubjectPublicKeyInfo *spki, *freeSpki = NULL;
NSSCMSRecipientIdentifier *rid;
extern const SEC_ASN1Template NSSCMSRecipientInfoTemplate[];
if (!cmsg) {
/* a CMSMessage wasn't supplied, create a fake one to hold the pwfunc
* and a private arena pool */
cmsg = NSS_CMSMessage_Create(NULL);
cmsg->pwfn_arg = pwfn_arg;
/* mark it as a special cms message */
cmsg->contentInfo.contentTypeTag = (SECOidData *)&fakeContent;
}
poolp = cmsg->poolp;
mark = PORT_ArenaMark(poolp);
ri = (NSSCMSRecipientInfo *)PORT_ArenaZAlloc(poolp, sizeof(NSSCMSRecipientInfo));
if (ri == NULL)
goto loser;
ri->cmsg = cmsg;
if (DERinput) {
/* decode everything from DER */
SECItem newinput;
SECStatus rv = SECITEM_CopyItem(poolp, &newinput, DERinput);
if (SECSuccess != rv)
goto loser;
rv = SEC_QuickDERDecodeItem(poolp, ri, NSSCMSRecipientInfoTemplate, &newinput);
if (SECSuccess != rv)
goto loser;
}
switch (type) {
case NSSCMSRecipientID_IssuerSN:
{
ri->cert = CERT_DupCertificate(cert);
if (NULL == ri->cert)
goto loser;
spki = &(cert->subjectPublicKeyInfo);
break;
}
case NSSCMSRecipientID_SubjectKeyID:
{
PORT_Assert(pubKey);
spki = freeSpki = SECKEY_CreateSubjectPublicKeyInfo(pubKey);
break;
}
case NSSCMSRecipientID_BrandNew:
goto done;
break;
default:
/* unkown type */
goto loser;
break;
}
certalgtag = SECOID_GetAlgorithmTag(&(spki->algorithm));
rid = &ri->ri.keyTransRecipientInfo.recipientIdentifier;
switch (certalgtag) {
case SEC_OID_PKCS1_RSA_ENCRYPTION:
ri->recipientInfoType = NSSCMSRecipientInfoID_KeyTrans;
rid->identifierType = type;
if (type == NSSCMSRecipientID_IssuerSN) {
rid->id.issuerAndSN = CERT_GetCertIssuerAndSN(poolp, cert);
if (rid->id.issuerAndSN == NULL) {
break;
}
} else if (type == NSSCMSRecipientID_SubjectKeyID){
NSSCMSKeyTransRecipientInfoEx *riExtra;
rid->id.subjectKeyID = PORT_ArenaNew(poolp, SECItem);
if (rid->id.subjectKeyID == NULL) {
rv = SECFailure;
PORT_SetError(SEC_ERROR_NO_MEMORY);
break;
}
SECITEM_CopyItem(poolp, rid->id.subjectKeyID, subjKeyID);
if (rid->id.subjectKeyID->data == NULL) {
rv = SECFailure;
PORT_SetError(SEC_ERROR_NO_MEMORY);
break;
}
riExtra = &ri->ri.keyTransRecipientInfoEx;
riExtra->version = 0;
riExtra->pubKey = SECKEY_CopyPublicKey(pubKey);
if (riExtra->pubKey == NULL) {
rv = SECFailure;
PORT_SetError(SEC_ERROR_NO_MEMORY);
break;
}
} else {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
break;
case SEC_OID_X942_DIFFIE_HELMAN_KEY: /* dh-public-number */
PORT_Assert(type == NSSCMSRecipientID_IssuerSN);
if (type != NSSCMSRecipientID_IssuerSN) {
rv = SECFailure;
break;
}
/* a key agreement op */
ri->recipientInfoType = NSSCMSRecipientInfoID_KeyAgree;
if (ri->ri.keyTransRecipientInfo.recipientIdentifier.id.issuerAndSN == NULL) {
rv = SECFailure;
break;
}
/* we do not support the case where multiple recipients
* share the same KeyAgreeRecipientInfo and have multiple RecipientEncryptedKeys
* in this case, we would need to walk all the recipientInfos, take the
* ones that do KeyAgreement algorithms and join them, algorithm by algorithm
* Then, we'd generate ONE ukm and OriginatorIdentifierOrKey */
/* only epheremal-static Diffie-Hellman is supported for now
* this is the only form of key agreement that provides potential anonymity
* of the sender, plus we do not have to include certs in the message */
/* force single recipientEncryptedKey for now */
if ((rek = NSS_CMSRecipientEncryptedKey_Create(poolp)) == NULL) {
rv = SECFailure;
break;
}
/* hardcoded IssuerSN choice for now */
rek->recipientIdentifier.identifierType = NSSCMSKeyAgreeRecipientID_IssuerSN;
if ((rek->recipientIdentifier.id.issuerAndSN = CERT_GetCertIssuerAndSN(poolp, cert)) == NULL) {
rv = SECFailure;
break;
}
oiok = &(ri->ri.keyAgreeRecipientInfo.originatorIdentifierOrKey);
/* see RFC2630 12.3.1.1 */
oiok->identifierType = NSSCMSOriginatorIDOrKey_OriginatorPublicKey;
rv = NSS_CMSArray_Add(poolp, (void ***)&ri->ri.keyAgreeRecipientInfo.recipientEncryptedKeys,
(void *)rek);
break;
default:
/* other algorithms not supported yet */
/* NOTE that we do not support any KEK algorithm */
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
rv = SECFailure;
break;
}
if (rv == SECFailure)
goto loser;
/* set version */
switch (ri->recipientInfoType) {
case NSSCMSRecipientInfoID_KeyTrans:
if (ri->ri.keyTransRecipientInfo.recipientIdentifier.identifierType == NSSCMSRecipientID_IssuerSN)
version = NSS_CMS_KEYTRANS_RECIPIENT_INFO_VERSION_ISSUERSN;
else
version = NSS_CMS_KEYTRANS_RECIPIENT_INFO_VERSION_SUBJKEY;
dummy = SEC_ASN1EncodeInteger(poolp, &(ri->ri.keyTransRecipientInfo.version), version);
if (dummy == NULL)
goto loser;
break;
case NSSCMSRecipientInfoID_KeyAgree:
dummy = SEC_ASN1EncodeInteger(poolp, &(ri->ri.keyAgreeRecipientInfo.version),
NSS_CMS_KEYAGREE_RECIPIENT_INFO_VERSION);
if (dummy == NULL)
goto loser;
break;
case NSSCMSRecipientInfoID_KEK:
/* NOTE: this cannot happen as long as we do not support any KEK algorithm */
dummy = SEC_ASN1EncodeInteger(poolp, &(ri->ri.kekRecipientInfo.version),
NSS_CMS_KEK_RECIPIENT_INFO_VERSION);
if (dummy == NULL)
goto loser;
break;
}
done:
PORT_ArenaUnmark (poolp, mark);
if (freeSpki)
SECKEY_DestroySubjectPublicKeyInfo(freeSpki);
return ri;
loser:
if (ri && ri->cert) {
CERT_DestroyCertificate(ri->cert);
}
if (freeSpki) {
SECKEY_DestroySubjectPublicKeyInfo(freeSpki);
}
PORT_ArenaRelease (poolp, mark);
if (cmsg->contentInfo.contentTypeTag == &fakeContent) {
NSS_CMSMessage_Destroy(cmsg);
}
return NULL;
}
static int
sm_encrypt(CamelCipherContext *context, const char *userid, GPtrArray *recipients, CamelMimePart *ipart, CamelMimePart *opart, CamelException *ex)
{
struct _CamelSMIMEContextPrivate *p = ((CamelSMIMEContext *)context)->priv;
/*NSSCMSRecipientInfo **recipient_infos;*/
CERTCertificate **recipient_certs = NULL;
NSSCMSContentInfo *cinfo;
PK11SymKey *bulkkey = NULL;
SECOidTag bulkalgtag;
int bulkkeysize, i;
CK_MECHANISM_TYPE type;
PK11SlotInfo *slot;
PLArenaPool *poolp;
NSSCMSMessage *cmsg = NULL;
NSSCMSEnvelopedData *envd;
NSSCMSEncoderContext *enc = NULL;
CamelStreamMem *mem;
CamelStream *ostream = NULL;
CamelDataWrapper *dw;
CamelContentType *ct;
poolp = PORT_NewArena(1024);
if (poolp == NULL) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, g_strerror (ENOMEM));
return -1;
}
/* Lookup all recipients certs, for later working */
recipient_certs = (CERTCertificate **)PORT_ArenaZAlloc(poolp, sizeof(*recipient_certs[0])*(recipients->len + 1));
if (recipient_certs == NULL) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, g_strerror (ENOMEM));
goto fail;
}
for (i=0;i<recipients->len;i++) {
recipient_certs[i] = CERT_FindCertByNicknameOrEmailAddr(p->certdb, recipients->pdata[i]);
if (recipient_certs[i] == NULL) {
camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot find certificate for `%s'"), recipients->pdata[i]);
goto fail;
}
}
/* Find a common algorithm, probably 3DES anyway ... */
if (NSS_SMIMEUtil_FindBulkAlgForRecipients(recipient_certs, &bulkalgtag, &bulkkeysize) != SECSuccess) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot find common bulk encryption algorithm"));
goto fail;
}
/* Generate a new bulk key based on the common algorithm - expensive */
type = PK11_AlgtagToMechanism(bulkalgtag);
slot = PK11_GetBestSlot(type, context);
if (slot == NULL) {
/* PORT_GetError(); ?? */
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot allocate slot for encryption bulk key"));
goto fail;
}
bulkkey = PK11_KeyGen(slot, type, NULL, bulkkeysize/8, context);
PK11_FreeSlot(slot);
/* Now we can start building the message */
/* msg->envelopedData->data */
cmsg = NSS_CMSMessage_Create(NULL);
if (cmsg == NULL) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot create CMS Message"));
goto fail;
}
envd = NSS_CMSEnvelopedData_Create(cmsg, bulkalgtag, bulkkeysize);
if (envd == NULL) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot create CMS Enveloped data"));
goto fail;
}
cinfo = NSS_CMSMessage_GetContentInfo(cmsg);
if (NSS_CMSContentInfo_SetContent_EnvelopedData(cmsg, cinfo, envd) != SECSuccess) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot attach CMS Enveloped data"));
goto fail;
}
cinfo = NSS_CMSEnvelopedData_GetContentInfo(envd);
if (NSS_CMSContentInfo_SetContent_Data(cmsg, cinfo, NULL, PR_FALSE) != SECSuccess) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot attach CMS data object"));
goto fail;
}
/* add recipient certs */
for (i=0;recipient_certs[i];i++) {
NSSCMSRecipientInfo *ri = NSS_CMSRecipientInfo_Create(cmsg, recipient_certs[i]);
if (ri == NULL) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot create CMS Recipient information"));
goto fail;
}
if (NSS_CMSEnvelopedData_AddRecipient(envd, ri) != SECSuccess) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot add CMS Recipient information"));
goto fail;
}
}
/* dump it out */
ostream = camel_stream_mem_new();
enc = NSS_CMSEncoder_Start(cmsg,
sm_write_stream, ostream,
NULL, NULL,
NULL, NULL,
sm_decrypt_key, bulkkey,
NULL, NULL);
if (enc == NULL) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot create encoder context"));
goto fail;
}
/* FIXME: Stream the input */
/* FIXME: Canonicalise the input? */
mem = (CamelStreamMem *)camel_stream_mem_new();
camel_data_wrapper_write_to_stream((CamelDataWrapper *)ipart, (CamelStream *)mem);
if (NSS_CMSEncoder_Update(enc, (char *) mem->buffer->data, mem->buffer->len) != SECSuccess) {
NSS_CMSEncoder_Cancel(enc);
camel_object_unref(mem);
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Failed to add data to encoder"));
goto fail;
}
camel_object_unref(mem);
if (NSS_CMSEncoder_Finish(enc) != SECSuccess) {
camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Failed to encode data"));
goto fail;
}
PK11_FreeSymKey(bulkkey);
NSS_CMSMessage_Destroy(cmsg);
for (i=0;recipient_certs[i];i++)
CERT_DestroyCertificate(recipient_certs[i]);
PORT_FreeArena(poolp, PR_FALSE);
dw = camel_data_wrapper_new();
camel_data_wrapper_construct_from_stream(dw, ostream);
camel_object_unref(ostream);
dw->encoding = CAMEL_TRANSFER_ENCODING_BINARY;
ct = camel_content_type_new("application", "x-pkcs7-mime");
camel_content_type_set_param(ct, "name", "smime.p7m");
camel_content_type_set_param(ct, "smime-type", "enveloped-data");
camel_data_wrapper_set_mime_type_field(dw, ct);
camel_content_type_unref(ct);
camel_medium_set_content_object((CamelMedium *)opart, dw);
camel_object_unref(dw);
camel_mime_part_set_disposition(opart, "attachment");
camel_mime_part_set_filename(opart, "smime.p7m");
camel_mime_part_set_description(opart, "S/MIME Encrypted Message");
camel_mime_part_set_encoding(opart, CAMEL_TRANSFER_ENCODING_BASE64);
return 0;
fail:
if (ostream)
camel_object_unref(ostream);
if (cmsg)
NSS_CMSMessage_Destroy(cmsg);
if (bulkkey)
PK11_FreeSymKey(bulkkey);
if (recipient_certs) {
for (i=0;recipient_certs[i];i++)
CERT_DestroyCertificate(recipient_certs[i]);
}
PORT_FreeArena(poolp, PR_FALSE);
return -1;
}
/*
* SecCmsDigestContextFinishMultiple - finish the digests and put them
* into an array of CSSM_DATAs (allocated on poolp)
*/
OSStatus
SecCmsDigestContextFinishMultiple(SecCmsDigestContextRef cmsdigcx, SecArenaPoolRef poolp,
CSSM_DATA_PTR **digestsp)
{
CSSM_CC_HANDLE digobj;
CSSM_DATA_PTR *digests, digest;
int i;
void *mark;
OSStatus rv = SECFailure;
/* no contents? do not update digests */
if (digestsp == NULL || !cmsdigcx->saw_contents) {
for (i = 0; i < cmsdigcx->digcnt; i++)
if (cmsdigcx->digobjs[i])
CSSM_DeleteContext(cmsdigcx->digobjs[i]);
rv = SECSuccess;
if (digestsp)
*digestsp = NULL;
goto cleanup;
}
mark = PORT_ArenaMark ((PLArenaPool *)poolp);
/* allocate digest array & CSSM_DATAs on arena */
digests = (CSSM_DATA_PTR *)PORT_ArenaAlloc((PLArenaPool *)poolp, (cmsdigcx->digcnt+1) * sizeof(CSSM_DATA_PTR));
digest = (CSSM_DATA_PTR)PORT_ArenaZAlloc((PLArenaPool *)poolp, cmsdigcx->digcnt * sizeof(CSSM_DATA));
if (digests == NULL || digest == NULL) {
goto loser;
}
for (i = 0; i < cmsdigcx->digcnt; i++, digest++) {
digobj = cmsdigcx->digobjs[i];
CSSM_QUERY_SIZE_DATA dataSize;
rv = CSSM_QuerySize(digobj, CSSM_FALSE, 1, &dataSize);
if (rv != CSSM_OK)
{
goto loser;
}
int diglength = dataSize.SizeOutputBlock;
if (digobj)
{
digest->Data = (unsigned char*)PORT_ArenaAlloc((PLArenaPool *)poolp, diglength);
if (digest->Data == NULL)
goto loser;
digest->Length = diglength;
rv = CSSM_DigestDataFinal(digobj, digest);
if (rv != CSSM_OK)
{
goto loser;
}
CSSM_DeleteContext(digobj);
}
else
{
digest->Data = NULL;
digest->Length = 0;
}
digests[i] = digest;
}
digests[i] = NULL;
*digestsp = digests;
rv = SECSuccess;
loser:
if (rv == SECSuccess)
PORT_ArenaUnmark((PLArenaPool *)poolp, mark);
else
PORT_ArenaRelease((PLArenaPool *)poolp, mark);
cleanup:
if (cmsdigcx->digcnt > 0) {
PORT_Free(cmsdigcx->digobjs);
}
PORT_Free(cmsdigcx);
return rv;
}
NSSLOWKEYPublicKey *
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;
#ifndef NSS_DISABLE_ECC
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 = EC_CopyParams(arena, &(pubk->u.ec.ecParams),
&(privk->u.ec.ecParams));
if (rv == SECSuccess) return pubk;
}
break;
#endif /* NSS_DISABLE_ECC */
/* No Fortezza in Low Key implementations (Fortezza keys aren't
* stored in our data base */
default:
break;
}
PORT_FreeArena (arena, PR_FALSE);
return NULL;
}
SECStatus
DH_GenParam(int primeLen, DHParams **params)
{
PLArenaPool *arena;
DHParams *dhparams;
unsigned char *pb = NULL;
unsigned char *ab = NULL;
unsigned long counter = 0;
mp_int p, q, a, h, psub1, test;
mp_err err = MP_OKAY;
SECStatus rv = SECSuccess;
if (!params || primeLen < 0) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
arena = PORT_NewArena(NSS_FREEBL_DEFAULT_CHUNKSIZE);
if (!arena) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
dhparams = (DHParams *)PORT_ArenaZAlloc(arena, sizeof(DHParams));
if (!dhparams) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
PORT_FreeArena(arena, PR_TRUE);
return SECFailure;
}
dhparams->arena = arena;
MP_DIGITS(&p) = 0;
MP_DIGITS(&q) = 0;
MP_DIGITS(&a) = 0;
MP_DIGITS(&h) = 0;
MP_DIGITS(&psub1) = 0;
MP_DIGITS(&test) = 0;
CHECK_MPI_OK( mp_init(&p) );
CHECK_MPI_OK( mp_init(&q) );
CHECK_MPI_OK( mp_init(&a) );
CHECK_MPI_OK( mp_init(&h) );
CHECK_MPI_OK( mp_init(&psub1) );
CHECK_MPI_OK( mp_init(&test) );
/* generate prime with MPI, uses Miller-Rabin to generate strong prime. */
pb = PORT_Alloc(primeLen);
CHECK_SEC_OK( RNG_GenerateGlobalRandomBytes(pb, primeLen) );
pb[0] |= 0x80; /* set high-order bit */
pb[primeLen-1] |= 0x01; /* set low-order bit */
CHECK_MPI_OK( mp_read_unsigned_octets(&p, pb, primeLen) );
CHECK_MPI_OK( mpp_make_prime(&p, primeLen * 8, PR_TRUE, &counter) );
/* construct Sophie-Germain prime q = (p-1)/2. */
CHECK_MPI_OK( mp_sub_d(&p, 1, &psub1) );
CHECK_MPI_OK( mp_div_2(&psub1, &q) );
/* construct a generator from the prime. */
ab = PORT_Alloc(primeLen);
/* generate a candidate number a in p's field */
CHECK_SEC_OK( RNG_GenerateGlobalRandomBytes(ab, primeLen) );
CHECK_MPI_OK( mp_read_unsigned_octets(&a, ab, primeLen) );
/* force a < p (note that quot(a/p) <= 1) */
if ( mp_cmp(&a, &p) > 0 )
CHECK_MPI_OK( mp_sub(&a, &p, &a) );
do {
/* check that a is in the range [2..p-1] */
if ( mp_cmp_d(&a, 2) < 0 || mp_cmp(&a, &psub1) >= 0) {
/* a is outside of the allowed range. Set a=3 and keep going. */
mp_set(&a, 3);
}
/* if a**q mod p != 1 then a is a generator */
CHECK_MPI_OK( mp_exptmod(&a, &q, &p, &test) );
if ( mp_cmp_d(&test, 1) != 0 )
break;
/* increment the candidate and try again. */
CHECK_MPI_OK( mp_add_d(&a, 1, &a) );
} while (PR_TRUE);
MPINT_TO_SECITEM(&p, &dhparams->prime, arena);
MPINT_TO_SECITEM(&a, &dhparams->base, arena);
*params = dhparams;
cleanup:
mp_clear(&p);
mp_clear(&q);
mp_clear(&a);
mp_clear(&h);
mp_clear(&psub1);
mp_clear(&test);
if (pb) PORT_ZFree(pb, primeLen);
if (ab) PORT_ZFree(ab, primeLen);
if (err) {
MP_TO_SEC_ERROR(err);
rv = SECFailure;
}
if (rv)
PORT_FreeArena(arena, PR_TRUE);
return rv;
}
static void ListCRLNames (CERTCertDBHandle *certHandle, int crlType, PRBool deletecrls)
{
CERTCrlHeadNode *crlList = NULL;
CERTCrlNode *crlNode = NULL;
CERTName *name = NULL;
PLArenaPool *arena = NULL;
SECStatus rv;
do {
arena = PORT_NewArena (SEC_ASN1_DEFAULT_ARENA_SIZE);
if (arena == NULL) {
fprintf(stderr, "%s: fail to allocate memory\n", progName);
break;
}
name = PORT_ArenaZAlloc (arena, sizeof(*name));
if (name == NULL) {
fprintf(stderr, "%s: fail to allocate memory\n", progName);
break;
}
name->arena = arena;
rv = SEC_LookupCrls (certHandle, &crlList, crlType);
if (rv != SECSuccess) {
fprintf(stderr, "%s: fail to look up CRLs (%s)\n", progName,
SECU_Strerror(PORT_GetError()));
break;
}
/* just in case */
if (!crlList)
break;
crlNode = crlList->first;
fprintf (stdout, "\n");
fprintf (stdout, "\n%-40s %-5s\n\n", "CRL names", "CRL Type");
while (crlNode) {
char* asciiname = NULL;
CERTCertificate *cert = NULL;
if (crlNode->crl && &crlNode->crl->crl.derName) {
cert = CERT_FindCertByName(certHandle,
&crlNode->crl->crl.derName);
if (!cert) {
SECU_PrintError(progName, "could not find signing "
"certificate in database");
}
}
if (cert) {
char* certName = NULL;
if (cert->nickname && PORT_Strlen(cert->nickname) > 0) {
certName = cert->nickname;
} else if (cert->emailAddr && PORT_Strlen(cert->emailAddr) > 0) {
certName = cert->emailAddr;
}
if (certName) {
asciiname = PORT_Strdup(certName);
}
CERT_DestroyCertificate(cert);
}
if (!asciiname) {
name = &crlNode->crl->crl.name;
if (!name){
SECU_PrintError(progName, "fail to get the CRL "
"issuer name");
continue;
}
asciiname = CERT_NameToAscii(name);
}
fprintf (stdout, "%-40s %-5s\n", asciiname, "CRL");
if (asciiname) {
PORT_Free(asciiname);
}
if ( PR_TRUE == deletecrls) {
CERTSignedCrl* acrl = NULL;
SECItem* issuer = &crlNode->crl->crl.derName;
acrl = SEC_FindCrlByName(certHandle, issuer, crlType);
if (acrl)
{
SEC_DeletePermCRL(acrl);
SEC_DestroyCrl(acrl);
}
}
crlNode = crlNode->next;
}
} while (0);
if (crlList)
PORT_FreeArena (crlList->arena, PR_FALSE);
PORT_FreeArena (arena, PR_FALSE);
}
err_t RSA_signature_verify_nss(const struct RSA_public_key *k
, const u_char *hash_val, size_t hash_len
,const u_char *sig_val, size_t sig_len)
{
SECKEYPublicKey *publicKey;
PRArenaPool *arena;
SECStatus retVal = SECSuccess;
SECItem nss_n, nss_e;
SECItem signature, data;
chunk_t n,e;
/*Converting n and e to form public key in SECKEYPublicKey data structure*/
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (arena == NULL) {
PORT_SetError (SEC_ERROR_NO_MEMORY);
return "10" "NSS error: Not enough memory to create arena";
}
publicKey = (SECKEYPublicKey *) PORT_ArenaZAlloc (arena, sizeof (SECKEYPublicKey));
if (!publicKey) {
PORT_FreeArena (arena, PR_FALSE);
PORT_SetError (SEC_ERROR_NO_MEMORY);
return "11" "NSS error: Not enough memory to create publicKey";
}
publicKey->arena = arena;
publicKey->keyType = rsaKey;
publicKey->pkcs11Slot = NULL;
publicKey->pkcs11ID = CK_INVALID_HANDLE;
/* Converting n(modulus) and e(exponent) from mpz_t form to chunk_t */
n = mpz_to_n_autosize(&k->n);
e = mpz_to_n_autosize(&k->e);
/*Converting n and e to nss_n and nss_e*/
nss_n.data = n.ptr;
nss_n.len = (unsigned int)n.len;
nss_n.type = siBuffer;
nss_e.data = e.ptr;
nss_e.len = (unsigned int)e.len;
nss_e.type = siBuffer;
retVal = SECITEM_CopyItem(arena, &publicKey->u.rsa.modulus, &nss_n);
if (retVal == SECSuccess) {
retVal = SECITEM_CopyItem (arena, &publicKey->u.rsa.publicExponent, &nss_e);
}
if(retVal != SECSuccess) {
pfree(n.ptr);
pfree(e.ptr);
SECKEY_DestroyPublicKey (publicKey);
return "12" "NSS error: Not able to copy modulus or exponent or both while forming SECKEYPublicKey structure";
}
signature.type = siBuffer;
signature.data = DISCARD_CONST(unsigned char *, sig_val);
signature.len = (unsigned int)sig_len;
data.len = (unsigned int)sig_len;
data.data = alloc_bytes(data.len, "NSS decrypted signature");
data.type = siBuffer;
if(PK11_VerifyRecover(publicKey, &signature, &data, osw_return_nss_password_file_info()) == SECSuccess ) {
DBG(DBG_CRYPT,DBG_dump("NSS RSA verify: decrypted sig: ", data.data, data.len));
}
else {
DBG(DBG_CRYPT,DBG_log("NSS RSA verify: decrypting signature is failed"));
return "13" "NSS error: Not able to decrypt";
}
if(memcmp(data.data+data.len-hash_len, hash_val, hash_len)!=0) {
pfree(data.data);
loglog(RC_LOG_SERIOUS, "RSA Signature NOT verified");
return "14" "NSS error: Not able to verify";
}
DBG(DBG_CRYPT,DBG_dump("NSS RSA verify: hash value: ", hash_val, hash_len));
pfree(data.data);
pfree(n.ptr);
pfree(e.ptr);
SECKEY_DestroyPublicKey (publicKey);
DBG(DBG_CRYPT, DBG_log("RSA Signature verified"));
return NULL;
}
/* create a new external bag which is appended onto the list
* of bags in baggage. the bag is created in the same arena
* as baggage
*/
SEC_PKCS12BaggageItem *
sec_pkcs12_create_external_bag(SEC_PKCS12Baggage *luggage)
{
void *dummy, *mark;
SEC_PKCS12BaggageItem *bag;
if(luggage == NULL) {
return NULL;
}
mark = PORT_ArenaMark(luggage->poolp);
/* allocate space for null terminated bag list */
if(luggage->bags == NULL) {
luggage->bags=(SEC_PKCS12BaggageItem**)PORT_ArenaZAlloc(luggage->poolp,
sizeof(SEC_PKCS12BaggageItem *));
if(luggage->bags == NULL) {
goto loser;
}
luggage->luggage_size = 0;
}
/* grow the list */
dummy = PORT_ArenaGrow(luggage->poolp, luggage->bags,
sizeof(SEC_PKCS12BaggageItem *) * (luggage->luggage_size + 1),
sizeof(SEC_PKCS12BaggageItem *) * (luggage->luggage_size + 2));
if(dummy == NULL) {
goto loser;
}
luggage->bags = (SEC_PKCS12BaggageItem**)dummy;
luggage->bags[luggage->luggage_size] =
(SEC_PKCS12BaggageItem *)PORT_ArenaZAlloc(luggage->poolp,
sizeof(SEC_PKCS12BaggageItem));
if(luggage->bags[luggage->luggage_size] == NULL) {
goto loser;
}
/* create new bag and append it to the end */
bag = luggage->bags[luggage->luggage_size];
bag->espvks = (SEC_PKCS12ESPVKItem **)PORT_ArenaZAlloc(
luggage->poolp,
sizeof(SEC_PKCS12ESPVKItem *));
bag->unencSecrets = (SEC_PKCS12SafeBag **)PORT_ArenaZAlloc(
luggage->poolp,
sizeof(SEC_PKCS12SafeBag *));
if((bag->espvks == NULL) || (bag->unencSecrets == NULL)) {
goto loser;
}
bag->poolp = luggage->poolp;
luggage->luggage_size++;
luggage->bags[luggage->luggage_size] = NULL;
bag->espvks[0] = NULL;
bag->unencSecrets[0] = NULL;
bag->nEspvks = bag->nSecrets = 0;
PORT_ArenaUnmark(luggage->poolp, mark);
return bag;
loser:
PORT_ArenaRelease(luggage->poolp, mark);
PORT_SetError(SEC_ERROR_NO_MEMORY);
return NULL;
}
/*
* smime_choose_cipher - choose a cipher that works for all the recipients
*
* "scert" - sender's certificate
* "rcerts" - recipient's certificates
*/
static long
smime_choose_cipher(CERTCertificate *scert, CERTCertificate **rcerts)
{
PLArenaPool *poolp;
long cipher;
long chosen_cipher;
int *cipher_abilities;
int *cipher_votes;
int weak_mapi;
int strong_mapi;
int aes128_mapi;
int aes256_mapi;
int rcount, mapi, max, i;
chosen_cipher = SMIME_RC2_CBC_40; /* the default, LCD */
weak_mapi = smime_mapi_by_cipher(chosen_cipher);
aes128_mapi = smime_mapi_by_cipher(SMIME_AES_CBC_128);
aes256_mapi = smime_mapi_by_cipher(SMIME_AES_CBC_256);
poolp = PORT_NewArena (1024); /* XXX what is right value? */
if (poolp == NULL)
goto done;
cipher_abilities = (int *)PORT_ArenaZAlloc(poolp, smime_cipher_map_count * sizeof(int));
cipher_votes = (int *)PORT_ArenaZAlloc(poolp, smime_cipher_map_count * sizeof(int));
if (cipher_votes == NULL || cipher_abilities == NULL)
goto done;
/* Make triple-DES the strong cipher. */
strong_mapi = smime_mapi_by_cipher (SMIME_DES_EDE3_168);
/* walk all the recipient's certs */
for (rcount = 0; rcerts[rcount] != NULL; rcount++) {
SECItem *profile;
NSSSMIMECapability **caps;
int pref;
/* the first cipher that matches in the user's SMIME profile gets
* "smime_cipher_map_count" votes; the next one gets "smime_cipher_map_count" - 1
* and so on. If every cipher matches, the last one gets 1 (one) vote */
pref = smime_cipher_map_count;
/* find recipient's SMIME profile */
profile = CERT_FindSMimeProfile(rcerts[rcount]);
if (profile != NULL && profile->data != NULL && profile->len > 0) {
/* we have a profile (still DER-encoded) */
caps = NULL;
/* decode it */
if (SEC_QuickDERDecodeItem(poolp, &caps,
NSSSMIMECapabilitiesTemplate, profile) == SECSuccess &&
caps != NULL)
{
/* walk the SMIME capabilities for this recipient */
for (i = 0; caps[i] != NULL; i++) {
cipher = nss_SMIME_FindCipherForSMIMECap(caps[i]);
mapi = smime_mapi_by_cipher(cipher);
if (mapi >= 0) {
/* found the cipher */
cipher_abilities[mapi]++;
cipher_votes[mapi] += pref;
--pref;
}
}
}
} else {
/* no profile found - so we can only assume that the user can do
* the mandatory algorithms which are RC2-40 (weak crypto) and
* 3DES (strong crypto), unless the user has an elliptic curve
* key. For elliptic curve keys, RFC 5753 mandates support
* for AES 128 CBC. */
SECKEYPublicKey *key;
unsigned int pklen_bits;
KeyType key_type;
/*
* if recipient's public key length is > 512, vote for a strong cipher
* please not that the side effect of this is that if only one recipient
* has an export-level public key, the strong cipher is disabled.
*
* XXX This is probably only good for RSA keys. What I would
* really like is a function to just say; Is the public key in
* this cert an export-length key? Then I would not have to
* know things like the value 512, or the kind of key, or what
* a subjectPublicKeyInfo is, etc.
*/
key = CERT_ExtractPublicKey(rcerts[rcount]);
pklen_bits = 0;
key_type = nullKey;
if (key != NULL) {
pklen_bits = SECKEY_PublicKeyStrengthInBits (key);
key_type = SECKEY_GetPublicKeyType(key);
SECKEY_DestroyPublicKey (key);
key = NULL;
}
if (key_type == ecKey) {
/* While RFC 5753 mandates support for AES-128 CBC, should use
* AES 256 if user's key provides more than 128 bits of
* security strength so that symmetric key is not weak link. */
/* RC2-40 is not compatible with elliptic curve keys. */
chosen_cipher = SMIME_DES_EDE3_168;
if (pklen_bits > 256) {
cipher_abilities[aes256_mapi]++;
cipher_votes[aes256_mapi] += pref;
pref--;
}
cipher_abilities[aes128_mapi]++;
cipher_votes[aes128_mapi] += pref;
pref--;
cipher_abilities[strong_mapi]++;
cipher_votes[strong_mapi] += pref;
pref--;
} else {
if (pklen_bits > 512) {
/* cast votes for the strong algorithm */
cipher_abilities[strong_mapi]++;
cipher_votes[strong_mapi] += pref;
pref--;
}
/* always cast (possibly less) votes for the weak algorithm */
cipher_abilities[weak_mapi]++;
cipher_votes[weak_mapi] += pref;
}
}
if (profile != NULL)
SECITEM_FreeItem(profile, PR_TRUE);
}
/* find cipher that is agreeable by all recipients and that has the most votes */
max = 0;
for (mapi = 0; mapi < smime_cipher_map_count; mapi++) {
/* if not all of the recipients can do this, forget it */
if (cipher_abilities[mapi] != rcount)
continue;
/* if cipher is not enabled or not allowed by policy, forget it */
if (!smime_cipher_map[mapi].enabled || !smime_cipher_map[mapi].allowed)
continue;
/* now see if this one has more votes than the last best one */
if (cipher_votes[mapi] >= max) {
/* if equal number of votes, prefer the ones further down in the list */
/* with the expectation that these are higher rated ciphers */
chosen_cipher = smime_cipher_map[mapi].cipher;
max = cipher_votes[mapi];
}
}
/* if no common cipher was found, chosen_cipher stays at the default */
done:
if (poolp != NULL)
PORT_FreeArena (poolp, PR_FALSE);
return chosen_cipher;
}
SECItem *
SECITEM_AllocItem(PLArenaPool *arena, SECItem *item, unsigned int len)
{
SECItem *result = NULL;
void *mark = NULL;
if (arena != NULL) {
mark = PORT_ArenaMark(arena);
}
if (item == NULL) {
if (arena != NULL) {
result = PORT_ArenaZAlloc(arena, sizeof(SECItem));
} else {
result = PORT_ZAlloc(sizeof(SECItem));
}
if (result == NULL) {
goto loser;
}
} else {
PORT_Assert(item->data == NULL);
result = item;
}
result->len = len;
if (len) {
if (arena != NULL) {
result->data = PORT_ArenaAlloc(arena, len);
} else {
result->data = PORT_Alloc(len);
}
if (result->data == NULL) {
goto loser;
}
} else {
result->data = NULL;
}
if (mark) {
PORT_ArenaUnmark(arena, mark);
}
return(result);
loser:
if ( arena != NULL ) {
if (mark) {
PORT_ArenaRelease(arena, mark);
}
if (item != NULL) {
item->data = NULL;
item->len = 0;
}
} else {
if (result != NULL) {
SECITEM_FreeItem(result, (item == NULL) ? PR_TRUE : PR_FALSE);
}
/*
* If item is not NULL, the above has set item->data and
* item->len to 0.
*/
}
return(NULL);
}
/* MUST BE THREAD-SAFE */
static PK11SymKey *calc_dh_shared(const chunk_t g, /* converted to SECItem */
/*const*/ SECKEYPrivateKey *privk, /* NSS doesn't do const */
const struct oakley_group_desc *group,
const SECKEYPublicKey *local_pubk)
{
struct timeval tv0;
SECKEYPublicKey *remote_pubk;
SECItem nss_g;
PK11SymKey *dhshared;
PRArenaPool *arena;
SECStatus status;
unsigned int dhshared_len;
DBG(DBG_CRYPT,
DBG_log("Started DH shared-secret computation in NSS:"));
gettimeofday(&tv0, NULL);
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
passert(arena != NULL);
remote_pubk = (SECKEYPublicKey *)
PORT_ArenaZAlloc(arena, sizeof(SECKEYPublicKey));
remote_pubk->arena = arena;
remote_pubk->keyType = dhKey;
remote_pubk->pkcs11Slot = NULL;
remote_pubk->pkcs11ID = CK_INVALID_HANDLE;
nss_g.data = g.ptr;
nss_g.len = (unsigned int)g.len;
nss_g.type = siBuffer;
status = SECITEM_CopyItem(remote_pubk->arena, &remote_pubk->u.dh.prime,
&local_pubk->u.dh.prime);
passert(status == SECSuccess);
status = SECITEM_CopyItem(remote_pubk->arena, &remote_pubk->u.dh.base,
&local_pubk->u.dh.base);
passert(status == SECSuccess);
status = SECITEM_CopyItem(remote_pubk->arena,
&remote_pubk->u.dh.publicValue, &nss_g);
passert(status == SECSuccess);
dhshared = PK11_PubDerive(privk, remote_pubk, PR_FALSE, NULL, NULL,
CKM_DH_PKCS_DERIVE,
CKM_CONCATENATE_DATA_AND_BASE,
CKA_DERIVE, group->bytes,
lsw_return_nss_password_file_info());
passert(dhshared != NULL);
dhshared_len = PK11_GetKeyLength(dhshared);
if (group->bytes > dhshared_len) {
DBG(DBG_CRYPT,
DBG_log("Dropped %lu leading zeros",
group->bytes - dhshared_len));
chunk_t zeros;
PK11SymKey *newdhshared;
CK_KEY_DERIVATION_STRING_DATA string_params;
SECItem params;
zeros = hmac_pads(0x00, group->bytes - dhshared_len);
params.data = (unsigned char *)&string_params;
params.len = sizeof(string_params);
string_params.pData = zeros.ptr;
string_params.ulLen = zeros.len;
newdhshared = PK11_Derive(dhshared,
CKM_CONCATENATE_DATA_AND_BASE,
¶ms,
CKM_CONCATENATE_DATA_AND_BASE,
CKA_DERIVE, 0);
passert(newdhshared != NULL);
PK11_FreeSymKey(dhshared);
dhshared = newdhshared;
freeanychunk(zeros);
} else {
DBG(DBG_CRYPT,
DBG_log("Dropped no leading zeros %d", dhshared_len));
}
/* nss_symkey_log(dhshared, "dhshared"); */
DBG(DBG_CRYPT, {
struct timeval tv1;
unsigned long tv_diff;
gettimeofday(&tv1, NULL);
tv_diff = (tv1.tv_sec - tv0.tv_sec) * 1000000 +
(tv1.tv_usec - tv0.tv_usec);
DBG_log("calc_dh_shared(): time elapsed (%s): %ld usec",
enum_show(&oakley_group_names, group->group),
tv_diff);
});
SECItemArray *
SECITEM_AllocArray(PLArenaPool *arena, SECItemArray *array, unsigned int len)
{
SECItemArray *result = NULL;
void *mark = NULL;
if (array != NULL && array->items != NULL) {
PORT_Assert(0);
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
if (arena != NULL) {
mark = PORT_ArenaMark(arena);
}
if (array == NULL) {
if (arena != NULL) {
result = PORT_ArenaZAlloc(arena, sizeof(SECItemArray));
} else {
result = PORT_ZAlloc(sizeof(SECItemArray));
}
if (result == NULL) {
goto loser;
}
} else {
result = array;
}
result->len = len;
if (len) {
if (arena != NULL) {
result->items = PORT_ArenaZNewArray(arena, SECItem, len);
} else {
result->items = PORT_ZNewArray(SECItem, len);
}
if (result->items == NULL) {
goto loser;
}
} else {
result->items = NULL;
}
if (mark) {
PORT_ArenaUnmark(arena, mark);
}
return result;
loser:
if ( arena != NULL ) {
if (mark) {
PORT_ArenaRelease(arena, mark);
}
} else {
if (result != NULL && array == NULL) {
PORT_Free(result);
}
}
if (array != NULL) {
array->items = NULL;
array->len = 0;
}
return NULL;
}
SGNDigestInfo *
SGN_CreateDigestInfo(SECOidTag algorithm, const unsigned char *sig,
unsigned len)
{
SGNDigestInfo *di;
SECStatus rv;
PLArenaPool *arena;
SECItem *null_param;
SECItem dummy_value;
switch (algorithm) {
case SEC_OID_MD2:
case SEC_OID_MD5:
case SEC_OID_SHA1:
case SEC_OID_SHA224:
case SEC_OID_SHA256:
case SEC_OID_SHA384:
case SEC_OID_SHA512:
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
return NULL;
}
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (arena == NULL) {
return NULL;
}
di = (SGNDigestInfo *) PORT_ArenaZAlloc(arena, sizeof(SGNDigestInfo));
if (di == NULL) {
PORT_FreeArena(arena, PR_FALSE);
return NULL;
}
di->arena = arena;
/*
* PKCS #1 specifies that the AlgorithmID must have a NULL parameter
* (as opposed to no parameter at all).
*/
dummy_value.data = NULL;
dummy_value.len = 0;
null_param = SEC_ASN1EncodeItem(NULL, NULL, &dummy_value, SEC_NullTemplate);
if (null_param == NULL) {
goto loser;
}
rv = SECOID_SetAlgorithmID(arena, &di->digestAlgorithm, algorithm,
null_param);
SECITEM_FreeItem(null_param, PR_TRUE);
if (rv != SECSuccess) {
goto loser;
}
di->digest.data = (unsigned char *) PORT_ArenaAlloc(arena, len);
if (di->digest.data == NULL) {
goto loser;
}
di->digest.len = len;
PORT_Memcpy(di->digest.data, sig, len);
return di;
loser:
SGN_DestroyDigestInfo(di);
return NULL;
}
NSSLOWKEYPrivateKey *
nsslowkey_CopyPrivateKey(NSSLOWKEYPrivateKey *privKey)
{
NSSLOWKEYPrivateKey *returnKey = NULL;
SECStatus rv = SECFailure;
PLArenaPool *poolp;
if(!privKey) {
return NULL;
}
poolp = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if(!poolp) {
return NULL;
}
returnKey = (NSSLOWKEYPrivateKey*)PORT_ArenaZAlloc(poolp, sizeof(NSSLOWKEYPrivateKey));
if(!returnKey) {
rv = SECFailure;
goto loser;
}
returnKey->keyType = privKey->keyType;
returnKey->arena = poolp;
switch(privKey->keyType) {
case NSSLOWKEYRSAKey:
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.modulus),
&(privKey->u.rsa.modulus));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.version),
&(privKey->u.rsa.version));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.publicExponent),
&(privKey->u.rsa.publicExponent));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.privateExponent),
&(privKey->u.rsa.privateExponent));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.prime1),
&(privKey->u.rsa.prime1));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.prime2),
&(privKey->u.rsa.prime2));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.exponent1),
&(privKey->u.rsa.exponent1));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.exponent2),
&(privKey->u.rsa.exponent2));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.coefficient),
&(privKey->u.rsa.coefficient));
if(rv != SECSuccess) break;
break;
case NSSLOWKEYDSAKey:
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.publicValue),
&(privKey->u.dsa.publicValue));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.privateValue),
&(privKey->u.dsa.privateValue));
if(rv != SECSuccess) break;
returnKey->u.dsa.params.arena = poolp;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.params.prime),
&(privKey->u.dsa.params.prime));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.params.subPrime),
&(privKey->u.dsa.params.subPrime));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.params.base),
&(privKey->u.dsa.params.base));
if(rv != SECSuccess) break;
break;
case NSSLOWKEYDHKey:
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.publicValue),
&(privKey->u.dh.publicValue));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.privateValue),
&(privKey->u.dh.privateValue));
if(rv != SECSuccess) break;
returnKey->u.dsa.params.arena = poolp;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.prime),
&(privKey->u.dh.prime));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.base),
&(privKey->u.dh.base));
if(rv != SECSuccess) break;
break;
#ifndef NSS_DISABLE_ECC
case NSSLOWKEYECKey:
rv = SECITEM_CopyItem(poolp, &(returnKey->u.ec.version),
&(privKey->u.ec.version));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.ec.publicValue),
&(privKey->u.ec.publicValue));
if(rv != SECSuccess) break;
rv = SECITEM_CopyItem(poolp, &(returnKey->u.ec.privateValue),
&(privKey->u.ec.privateValue));
if(rv != SECSuccess) break;
returnKey->u.ec.ecParams.arena = poolp;
/* Copy the rest of the params */
rv = EC_CopyParams(poolp, &(returnKey->u.ec.ecParams),
&(privKey->u.ec.ecParams));
if (rv != SECSuccess) break;
break;
#endif /* NSS_DISABLE_ECC */
default:
rv = SECFailure;
}
loser:
if(rv != SECSuccess) {
PORT_FreeArena(poolp, PR_TRUE);
returnKey = NULL;
}
return returnKey;
}
static SECStatus
dsa_NewKeyExtended(const PQGParams *params, const SECItem * seed,
DSAPrivateKey **privKey)
{
mp_int p, g;
mp_int x, y;
mp_err err;
PRArenaPool *arena;
DSAPrivateKey *key;
/* Check args. */
if (!params || !privKey || !seed || !seed->data) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* Initialize an arena for the DSA key. */
arena = PORT_NewArena(NSS_FREEBL_DSA_DEFAULT_CHUNKSIZE);
if (!arena) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
key = (DSAPrivateKey *)PORT_ArenaZAlloc(arena, sizeof(DSAPrivateKey));
if (!key) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
PORT_FreeArena(arena, PR_TRUE);
return SECFailure;
}
key->params.arena = arena;
/* Initialize MPI integers. */
MP_DIGITS(&p) = 0;
MP_DIGITS(&g) = 0;
MP_DIGITS(&x) = 0;
MP_DIGITS(&y) = 0;
CHECK_MPI_OK( mp_init(&p) );
CHECK_MPI_OK( mp_init(&g) );
CHECK_MPI_OK( mp_init(&x) );
CHECK_MPI_OK( mp_init(&y) );
/* Copy over the PQG params */
CHECK_MPI_OK( SECITEM_CopyItem(arena, &key->params.prime,
¶ms->prime) );
CHECK_MPI_OK( SECITEM_CopyItem(arena, &key->params.subPrime,
¶ms->subPrime) );
CHECK_MPI_OK( SECITEM_CopyItem(arena, &key->params.base, ¶ms->base) );
/* Convert stored p, g, and received x into MPI integers. */
SECITEM_TO_MPINT(params->prime, &p);
SECITEM_TO_MPINT(params->base, &g);
OCTETS_TO_MPINT(seed->data, &x, seed->len);
/* Store x in private key */
SECITEM_AllocItem(arena, &key->privateValue, seed->len);
PORT_Memcpy(key->privateValue.data, seed->data, seed->len);
/* Compute public key y = g**x mod p */
CHECK_MPI_OK( mp_exptmod(&g, &x, &p, &y) );
/* Store y in public key */
MPINT_TO_SECITEM(&y, &key->publicValue, arena);
*privKey = key;
key = NULL;
cleanup:
mp_clear(&p);
mp_clear(&g);
mp_clear(&x);
mp_clear(&y);
if (key)
PORT_FreeArena(key->params.arena, PR_TRUE);
if (err) {
translate_mpi_error(err);
return SECFailure;
}
return SECSuccess;
}
/* Generates a new EC key pair. The private key is a supplied
* value and the public key is the result of performing a scalar
* point multiplication of that value with the curve's base point.
*/
SECStatus
ec_NewKey(ECParams *ecParams, ECPrivateKey **privKey,
const unsigned char *privKeyBytes, int privKeyLen)
{
SECStatus rv = SECFailure;
#ifndef NSS_DISABLE_ECC
PLArenaPool *arena;
ECPrivateKey *key;
mp_int k;
mp_err err = MP_OKAY;
int len;
#if EC_DEBUG
printf("ec_NewKey called\n");
#endif
MP_DIGITS(&k) = 0;
if (!ecParams || !privKey || !privKeyBytes || (privKeyLen < 0)) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* Initialize an arena for the EC key. */
if (!(arena = PORT_NewArena(NSS_FREEBL_DEFAULT_CHUNKSIZE)))
return SECFailure;
key = (ECPrivateKey *)PORT_ArenaZAlloc(arena, sizeof(ECPrivateKey));
if (!key) {
PORT_FreeArena(arena, PR_TRUE);
return SECFailure;
}
/* Set the version number (SEC 1 section C.4 says it should be 1) */
SECITEM_AllocItem(arena, &key->version, 1);
key->version.data[0] = 1;
/* Copy all of the fields from the ECParams argument to the
* ECParams structure within the private key.
*/
key->ecParams.arena = arena;
key->ecParams.type = ecParams->type;
key->ecParams.fieldID.size = ecParams->fieldID.size;
key->ecParams.fieldID.type = ecParams->fieldID.type;
if (ecParams->fieldID.type == ec_field_GFp) {
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.fieldID.u.prime,
&ecParams->fieldID.u.prime));
} else {
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.fieldID.u.poly,
&ecParams->fieldID.u.poly));
}
key->ecParams.fieldID.k1 = ecParams->fieldID.k1;
key->ecParams.fieldID.k2 = ecParams->fieldID.k2;
key->ecParams.fieldID.k3 = ecParams->fieldID.k3;
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.curve.a,
&ecParams->curve.a));
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.curve.b,
&ecParams->curve.b));
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.curve.seed,
&ecParams->curve.seed));
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.base,
&ecParams->base));
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.order,
&ecParams->order));
key->ecParams.cofactor = ecParams->cofactor;
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.DEREncoding,
&ecParams->DEREncoding));
key->ecParams.name = ecParams->name;
CHECK_SEC_OK(SECITEM_CopyItem(arena, &key->ecParams.curveOID,
&ecParams->curveOID));
len = (ecParams->fieldID.size + 7) >> 3;
SECITEM_AllocItem(arena, &key->publicValue, 2*len + 1);
len = ecParams->order.len;
SECITEM_AllocItem(arena, &key->privateValue, len);
/* Copy private key */
if (privKeyLen >= len) {
memcpy(key->privateValue.data, privKeyBytes, len);
} else {
memset(key->privateValue.data, 0, (len - privKeyLen));
memcpy(key->privateValue.data + (len - privKeyLen), privKeyBytes, privKeyLen);
}
/* Compute corresponding public key */
CHECK_MPI_OK( mp_init(&k) );
CHECK_MPI_OK( mp_read_unsigned_octets(&k, key->privateValue.data,
(mp_size) len) );
rv = ec_points_mul(ecParams, &k, NULL, NULL, &(key->publicValue));
if (rv != SECSuccess) goto cleanup;
*privKey = key;
cleanup:
mp_clear(&k);
if (rv)
PORT_FreeArena(arena, PR_TRUE);
#if EC_DEBUG
printf("ec_NewKey returning %s\n",
(rv == SECSuccess) ? "success" : "failure");
#endif
#else
PORT_SetError(SEC_ERROR_UNSUPPORTED_KEYALG);
#endif /* NSS_DISABLE_ECC */
return rv;
}
SECStatus
DH_NewKey(DHParams *params, DHPrivateKey **privKey)
{
PLArenaPool *arena;
DHPrivateKey *key;
mp_int g, xa, p, Ya;
mp_err err = MP_OKAY;
SECStatus rv = SECSuccess;
if (!params || !privKey) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
arena = PORT_NewArena(NSS_FREEBL_DEFAULT_CHUNKSIZE);
if (!arena) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
key = (DHPrivateKey *)PORT_ArenaZAlloc(arena, sizeof(DHPrivateKey));
if (!key) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
PORT_FreeArena(arena, PR_TRUE);
return SECFailure;
}
key->arena = arena;
MP_DIGITS(&g) = 0;
MP_DIGITS(&xa) = 0;
MP_DIGITS(&p) = 0;
MP_DIGITS(&Ya) = 0;
CHECK_MPI_OK( mp_init(&g) );
CHECK_MPI_OK( mp_init(&xa) );
CHECK_MPI_OK( mp_init(&p) );
CHECK_MPI_OK( mp_init(&Ya) );
/* Set private key's p */
CHECK_SEC_OK( SECITEM_CopyItem(arena, &key->prime, ¶ms->prime) );
SECITEM_TO_MPINT(key->prime, &p);
/* Set private key's g */
CHECK_SEC_OK( SECITEM_CopyItem(arena, &key->base, ¶ms->base) );
SECITEM_TO_MPINT(key->base, &g);
/* Generate private key xa */
SECITEM_AllocItem(arena, &key->privateValue,
dh_GetSecretKeyLen(params->prime.len));
CHECK_SEC_OK(RNG_GenerateGlobalRandomBytes(key->privateValue.data,
key->privateValue.len));
SECITEM_TO_MPINT( key->privateValue, &xa );
/* xa < p */
CHECK_MPI_OK( mp_mod(&xa, &p, &xa) );
/* Compute public key Ya = g ** xa mod p */
CHECK_MPI_OK( mp_exptmod(&g, &xa, &p, &Ya) );
MPINT_TO_SECITEM(&Ya, &key->publicValue, key->arena);
*privKey = key;
cleanup:
mp_clear(&g);
mp_clear(&xa);
mp_clear(&p);
mp_clear(&Ya);
if (err) {
MP_TO_SEC_ERROR(err);
rv = SECFailure;
}
if (rv) {
*privKey = NULL;
PORT_FreeArena(arena, PR_TRUE);
}
return rv;
}