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tenfourfox/security/nss/lib/ckfw/nssmkey/mobject.c
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ckmk.h"
#include "nssbase.h"
#include "secdert.h" /* for DER_INTEGER */
#include "string.h"
/* asn1 encoder (to build pkcs#8 blobs) */
#include <seccomon.h>
#include <secitem.h>
#include <blapit.h>
#include <secoid.h>
#include <secasn1.h>
/* for importing the keys */
#include <CoreFoundation/CoreFoundation.h>
#include <security/SecImportExport.h>
/*
* nssmkey/mobject.c
*
* This file implements the NSSCKMDObject object for the
* "nssmkey" cryptoki module.
*/
const CK_ATTRIBUTE_TYPE certAttrs[] = {
CKA_CLASS,
CKA_TOKEN,
CKA_PRIVATE,
CKA_MODIFIABLE,
CKA_LABEL,
CKA_CERTIFICATE_TYPE,
CKA_SUBJECT,
CKA_ISSUER,
CKA_SERIAL_NUMBER,
CKA_VALUE
};
const PRUint32 certAttrsCount = NSS_CKMK_ARRAY_SIZE(certAttrs);
/* private keys, for now only support RSA */
const CK_ATTRIBUTE_TYPE privKeyAttrs[] = {
CKA_CLASS,
CKA_TOKEN,
CKA_PRIVATE,
CKA_MODIFIABLE,
CKA_LABEL,
CKA_KEY_TYPE,
CKA_DERIVE,
CKA_LOCAL,
CKA_SUBJECT,
CKA_SENSITIVE,
CKA_DECRYPT,
CKA_SIGN,
CKA_SIGN_RECOVER,
CKA_UNWRAP,
CKA_EXTRACTABLE,
CKA_ALWAYS_SENSITIVE,
CKA_NEVER_EXTRACTABLE,
CKA_MODULUS,
CKA_PUBLIC_EXPONENT,
};
const PRUint32 privKeyAttrsCount = NSS_CKMK_ARRAY_SIZE(privKeyAttrs);
/* public keys, for now only support RSA */
const CK_ATTRIBUTE_TYPE pubKeyAttrs[] = {
CKA_CLASS,
CKA_TOKEN,
CKA_PRIVATE,
CKA_MODIFIABLE,
CKA_LABEL,
CKA_KEY_TYPE,
CKA_DERIVE,
CKA_LOCAL,
CKA_SUBJECT,
CKA_ENCRYPT,
CKA_VERIFY,
CKA_VERIFY_RECOVER,
CKA_WRAP,
CKA_MODULUS,
CKA_PUBLIC_EXPONENT,
};
const PRUint32 pubKeyAttrsCount = NSS_CKMK_ARRAY_SIZE(pubKeyAttrs);
static const CK_BBOOL ck_true = CK_TRUE;
static const CK_BBOOL ck_false = CK_FALSE;
static const CK_CERTIFICATE_TYPE ckc_x509 = CKC_X_509;
static const CK_KEY_TYPE ckk_rsa = CKK_RSA;
static const CK_OBJECT_CLASS cko_certificate = CKO_CERTIFICATE;
static const CK_OBJECT_CLASS cko_private_key = CKO_PRIVATE_KEY;
static const CK_OBJECT_CLASS cko_public_key = CKO_PUBLIC_KEY;
static const NSSItem ckmk_trueItem = {
(void *)&ck_true, (PRUint32)sizeof(CK_BBOOL) };
static const NSSItem ckmk_falseItem = {
(void *)&ck_false, (PRUint32)sizeof(CK_BBOOL) };
static const NSSItem ckmk_x509Item = {
(void *)&ckc_x509, (PRUint32)sizeof(CK_CERTIFICATE_TYPE) };
static const NSSItem ckmk_rsaItem = {
(void *)&ckk_rsa, (PRUint32)sizeof(CK_KEY_TYPE) };
static const NSSItem ckmk_certClassItem = {
(void *)&cko_certificate, (PRUint32)sizeof(CK_OBJECT_CLASS) };
static const NSSItem ckmk_privKeyClassItem = {
(void *)&cko_private_key, (PRUint32)sizeof(CK_OBJECT_CLASS) };
static const NSSItem ckmk_pubKeyClassItem = {
(void *)&cko_public_key, (PRUint32)sizeof(CK_OBJECT_CLASS) };
static const NSSItem ckmk_emptyItem = {
(void *)&ck_true, 0};
/*
* these are utilities. The chould be moved to a new utilities file.
*/
#ifdef DEBUG
static void
itemdump(char *str, void *data, int size, CK_RV error)
{
unsigned char *ptr = (unsigned char *)data;
int i;
fprintf(stderr,str);
for (i=0; i < size; i++) {
fprintf(stderr,"%02x ",(unsigned int) ptr[i]);
}
fprintf(stderr," (error = %d)\n", (int ) error);
}
#endif
/*
* unwrap a single DER value
* now that we have util linked in, we should probably use
* the ANS1_Decoder for this work...
*/
unsigned char *
nss_ckmk_DERUnwrap
(
unsigned char *src,
int size,
int *outSize,
unsigned char **next
)
{
unsigned char *start = src;
unsigned int len = 0;
/* initialize error condition return values */
*outSize = 0;
if (next) {
*next = src;
}
if (size < 2) {
return start;
}
src ++ ; /* skip the tag -- should check it against an expected value! */
len = (unsigned) *src++;
if (len & 0x80) {
int count = len & 0x7f;
len =0;
if (count+2 > size) {
return start;
}
while (count-- > 0) {
len = (len << 8) | (unsigned) *src++;
}
}
if (len + (src-start) > (unsigned int)size) {
return start;
}
if (next) {
*next = src+len;
}
*outSize = len;
return src;
}
/*
* get an attribute from a template. Value is returned in NSS item.
* data for the item is owned by the template.
*/
CK_RV
nss_ckmk_GetAttribute
(
CK_ATTRIBUTE_TYPE type,
CK_ATTRIBUTE *template,
CK_ULONG templateSize,
NSSItem *item
)
{
CK_ULONG i;
for (i=0; i < templateSize; i++) {
if (template[i].type == type) {
item->data = template[i].pValue;
item->size = template[i].ulValueLen;
return CKR_OK;
}
}
return CKR_TEMPLATE_INCOMPLETE;
}
/*
* get an attribute which is type CK_ULONG.
*/
CK_ULONG
nss_ckmk_GetULongAttribute
(
CK_ATTRIBUTE_TYPE type,
CK_ATTRIBUTE *template,
CK_ULONG templateSize,
CK_RV *pError
)
{
NSSItem item;
*pError = nss_ckmk_GetAttribute(type, template, templateSize, &item);
if (CKR_OK != *pError) {
return (CK_ULONG) 0;
}
if (item.size != sizeof(CK_ULONG)) {
*pError = CKR_ATTRIBUTE_VALUE_INVALID;
return (CK_ULONG) 0;
}
return *(CK_ULONG *)item.data;
}
/*
* get an attribute which is type CK_BBOOL.
*/
CK_BBOOL
nss_ckmk_GetBoolAttribute
(
CK_ATTRIBUTE_TYPE type,
CK_ATTRIBUTE *template,
CK_ULONG templateSize,
CK_BBOOL defaultBool
)
{
NSSItem item;
CK_RV error;
error = nss_ckmk_GetAttribute(type, template, templateSize, &item);
if (CKR_OK != error) {
return defaultBool;
}
if (item.size != sizeof(CK_BBOOL)) {
return defaultBool;
}
return *(CK_BBOOL *)item.data;
}
/*
* get an attribute as a NULL terminated string. Caller is responsible to
* free the string.
*/
char *
nss_ckmk_GetStringAttribute
(
CK_ATTRIBUTE_TYPE type,
CK_ATTRIBUTE *template,
CK_ULONG templateSize,
CK_RV *pError
)
{
NSSItem item;
char *str;
/* get the attribute */
*pError = nss_ckmk_GetAttribute(type, template, templateSize, &item);
if (CKR_OK != *pError) {
return (char *)NULL;
}
/* make sure it is null terminated */
str = nss_ZNEWARRAY(NULL, char, item.size+1);
if ((char *)NULL == str) {
*pError = CKR_HOST_MEMORY;
return (char *)NULL;
}
nsslibc_memcpy(str, item.data, item.size);
str[item.size] = 0;
return str;
}
/*
* Apple doesn't seem to have a public interface to the DER encoder,
* wip out a quick one for integers only (anything more complicated,
* we should use one of the 3 in lib/util). -- especially since we
* now link with it.
*/
static CK_RV
ckmk_encodeInt(NSSItem *dest, void *src, int srcLen)
{
int dataLen = srcLen;
int lenLen = 1;
int encLen;
int isSigned = 0;
int offset = 0;
unsigned char *data = NULL;
int i;
if (*(unsigned char *)src & 0x80) {
dataLen++;
isSigned = 1;
}
/* calculate the length of the length specifier */
/* (NOTE: destroys dataLen value) */
if (dataLen > 0x7f) {
do {
lenLen++;
dataLen >>= 8;
} while (dataLen);
}
/* calculate our total length */
dataLen = isSigned + srcLen;
encLen = 1 + lenLen + dataLen;
data = nss_ZNEWARRAY(NULL, unsigned char, encLen);
if ((unsigned char *)NULL == data) {
return CKR_HOST_MEMORY;
}
data[0] = DER_INTEGER;
if (1 == lenLen) {
data[1] = dataLen;
} else {
data[1] = 0x80 + lenLen;
for (i=0; i < lenLen; i++) {
data[i+1] = ((dataLen >> ((lenLen-i-1)*8)) & 0xff);
}
}
offset = lenLen+1;
if (isSigned) {
data[offset++] = 0;
}
nsslibc_memcpy(&data[offset], src, srcLen);
dest->data = data;
dest->size = encLen;
return CKR_OK;
}
/*
* Get a Keyring attribute. If content is set to true, then we get the
* content, not the attribute.
*/
static CK_RV
ckmk_GetCommonAttribute
(
ckmkInternalObject *io,
SecItemAttr itemAttr,
PRBool content,
NSSItem *item,
char *dbString
)
{
SecKeychainAttributeList *attrList = NULL;
SecKeychainAttributeInfo attrInfo;
PRUint32 len = 0;
PRUint32 dataLen = 0;
PRUint32 attrFormat = 0;
void *dataVal = 0;
void *out = NULL;
CK_RV error = CKR_OK;
OSStatus macErr;
attrInfo.count = 1;
attrInfo.tag = &itemAttr;
attrInfo.format = &attrFormat;
macErr = SecKeychainItemCopyAttributesAndData(io->u.item.itemRef,
&attrInfo, NULL, &attrList, &len, &out);
if (noErr != macErr) {
CKMK_MACERR(dbString, macErr);
return CKR_ATTRIBUTE_TYPE_INVALID;
}
dataLen = content ? len : attrList->attr->length;
dataVal = content ? out : attrList->attr->data;
/* Apple's documentation says this value is DER Encoded, but it clearly isn't
* der encode it before we ship it back off to NSS
*/
if ( kSecSerialNumberItemAttr == itemAttr ) {
error = ckmk_encodeInt(item, dataVal, dataLen);
goto loser; /* logically 'done' if error == CKR_OK */
}
item->data = nss_ZNEWARRAY(NULL, char, dataLen);
if (NULL == item->data) {
error = CKR_HOST_MEMORY;
goto loser;
}
nsslibc_memcpy(item->data, dataVal, dataLen);
item->size = dataLen;
loser:
SecKeychainItemFreeAttributesAndData(attrList, out);
return error;
}
/*
* change an attribute (does not operate on the content).
*/
static CK_RV
ckmk_updateAttribute
(
SecKeychainItemRef itemRef,
SecItemAttr itemAttr,
void *data,
PRUint32 len,
char *dbString
)
{
SecKeychainAttributeList attrList;
SecKeychainAttribute attrAttr;
OSStatus macErr;
CK_RV error = CKR_OK;
attrList.count = 1;
attrList.attr = &attrAttr;
attrAttr.tag = itemAttr;
attrAttr.data = data;
attrAttr.length = len;
macErr = SecKeychainItemModifyAttributesAndData(itemRef, &attrList, 0, NULL);
if (noErr != macErr) {
CKMK_MACERR(dbString, macErr);
error = CKR_ATTRIBUTE_TYPE_INVALID;
}
return error;
}
/*
* get an attribute (does not operate on the content)
*/
static CK_RV
ckmk_GetDataAttribute
(
ckmkInternalObject *io,
SecItemAttr itemAttr,
NSSItem *item,
char *dbString
)
{
return ckmk_GetCommonAttribute(io, itemAttr, PR_FALSE, item, dbString);
}
/*
* get an attribute we know is a BOOL.
*/
static CK_RV
ckmk_GetBoolAttribute
(
ckmkInternalObject *io,
SecItemAttr itemAttr,
NSSItem *item,
char *dbString
)
{
SecKeychainAttribute attr;
SecKeychainAttributeList attrList;
CK_BBOOL *boolp = NULL;
PRUint32 len = 0;;
void *out = NULL;
CK_RV error = CKR_OK;
OSStatus macErr;
attr.tag = itemAttr;
attr.length = 0;
attr.data = NULL;
attrList.count = 1;
attrList.attr = &attr;
boolp = nss_ZNEW(NULL, CK_BBOOL);
if ((CK_BBOOL *)NULL == boolp) {
error = CKR_HOST_MEMORY;
goto loser;
}
macErr = SecKeychainItemCopyContent(io->u.item.itemRef, NULL,
&attrList, &len, &out);
if (noErr != macErr) {
CKMK_MACERR(dbString, macErr);
error = CKR_ATTRIBUTE_TYPE_INVALID;
goto loser;
}
if (sizeof(PRUint32) != attr.length) {
error = CKR_ATTRIBUTE_TYPE_INVALID;
goto loser;
}
*boolp = *(PRUint32 *)attr.data ? 1 : 0;
item->data = boolp;
boolp = NULL;
item->size = sizeof(CK_BBOOL);
loser:
nss_ZFreeIf(boolp);
SecKeychainItemFreeContent(&attrList, out);
return error;
}
/*
* macros for fetching attributes into a cache and returning the
* appropriate value. These operate inside switch statements
*/
#define CKMK_HANDLE_ITEM(func, io, type, loc, item, error, str) \
if (0 == (item)->loc.size) { \
error = func(io, type, &(item)->loc, str); \
} \
return (CKR_OK == (error)) ? &(item)->loc : NULL;
#define CKMK_HANDLE_OPT_ITEM(func, io, type, loc, item, error, str) \
if (0 == (item)->loc.size) { \
(void) func(io, type, &(item)->loc, str); \
} \
return &(item)->loc ;
#define CKMK_HANDLE_BOOL_ITEM(io, type, loc, item, error, str) \
CKMK_HANDLE_ITEM(ckmk_GetBoolAttribute, io, type, loc, item, error, str)
#define CKMK_HANDLE_DATA_ITEM(io, type, loc, item, error, str) \
CKMK_HANDLE_ITEM(ckmk_GetDataAttribute, io, type, loc, item, error, str)
#define CKMK_HANDLE_OPT_DATA_ITEM(io, type, loc, item, error, str) \
CKMK_HANDLE_OPT_ITEM(ckmk_GetDataAttribute, io, type, loc, item, error, str)
/*
* fetch the unique identifier for each object type.
*/
static void
ckmk_FetchHashKey
(
ckmkInternalObject *io
)
{
NSSItem *key = &io->hashKey;
if (io->objClass == CKO_CERTIFICATE) {
ckmk_GetCommonAttribute(io, kSecCertEncodingItemAttr,
PR_TRUE, key, "Fetching HashKey (cert)");
} else {
ckmk_GetCommonAttribute(io, kSecKeyLabel,
PR_FALSE, key, "Fetching HashKey (key)");
}
}
/*
* Apple mucks with the actual subject and issuer, so go fetch
* the real ones ourselves.
*/
static void
ckmk_fetchCert
(
ckmkInternalObject *io
)
{
CK_RV error;
unsigned char * cert, *next;
int certSize, thisEntrySize;
error = ckmk_GetCommonAttribute(io, kSecCertEncodingItemAttr, PR_TRUE,
&io->u.item.derCert, "Fetching Value (cert)");
if (CKR_OK != error) {
return;
}
/* unwrap the cert bundle */
cert = nss_ckmk_DERUnwrap((unsigned char *)io->u.item.derCert.data,
io->u.item.derCert.size,
&certSize, NULL);
/* unwrap the cert itself */
/* cert == certdata */
cert = nss_ckmk_DERUnwrap(cert, certSize, &certSize, NULL);
/* skip the optional version */
if ((cert[0] & 0xa0) == 0xa0) {
nss_ckmk_DERUnwrap(cert, certSize, &thisEntrySize, &next);
certSize -= next - cert;
cert = next;
}
/* skip the serial number */
nss_ckmk_DERUnwrap(cert, certSize, &thisEntrySize, &next);
certSize -= next - cert;
cert = next;
/* skip the OID */
nss_ckmk_DERUnwrap(cert, certSize, &thisEntrySize, &next);
certSize -= next - cert;
cert = next;
/* save the (wrapped) issuer */
io->u.item.issuer.data = cert;
nss_ckmk_DERUnwrap(cert, certSize, &thisEntrySize, &next);
io->u.item.issuer.size = next - cert;
certSize -= io->u.item.issuer.size;
cert = next;
/* skip the OID */
nss_ckmk_DERUnwrap(cert, certSize, &thisEntrySize, &next);
certSize -= next - cert;
cert = next;
/* save the (wrapped) subject */
io->u.item.subject.data = cert;
nss_ckmk_DERUnwrap(cert, certSize, &thisEntrySize, &next);
io->u.item.subject.size = next - cert;
certSize -= io->u.item.subject.size;
cert = next;
}
static void
ckmk_fetchModulus
(
ckmkInternalObject *io
)
{
NSSItem item;
PRInt32 modLen;
CK_RV error;
/* we can't reliably get the modulus for private keys through CSSM (sigh).
* For NSS this is OK because we really only use this to get the modulus
* length (unless we are trying to get a public key from a private keys,
* something CSSM ALSO does not do!).
*/
error = ckmk_GetDataAttribute(io, kSecKeyKeySizeInBits, &item,
"Key Fetch Modulus");
if (CKR_OK != error) {
return;
}
modLen = *(PRInt32 *)item.data;
modLen = modLen/8; /* convert from bits to bytes */
nss_ZFreeIf(item.data);
io->u.item.modulus.data = nss_ZNEWARRAY(NULL, char, modLen);
if (NULL == io->u.item.modulus.data) {
return;
}
*(char *)io->u.item.modulus.data = 0x80; /* fake NSS out or it will
* drop the first byte */
io->u.item.modulus.size = modLen;
return;
}
const NSSItem *
ckmk_FetchCertAttribute
(
ckmkInternalObject *io,
CK_ATTRIBUTE_TYPE type,
CK_RV *pError
)
{
ckmkItemObject *item = &io->u.item;
*pError = CKR_OK;
switch(type) {
case CKA_CLASS:
return &ckmk_certClassItem;
case CKA_TOKEN:
case CKA_MODIFIABLE:
return &ckmk_trueItem;
case CKA_PRIVATE:
return &ckmk_falseItem;
case CKA_CERTIFICATE_TYPE:
return &ckmk_x509Item;
case CKA_LABEL:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecLabelItemAttr, label, item, *pError,
"Cert:Label attr")
case CKA_SUBJECT:
/* OK, well apple does provide an subject and issuer attribute, but they
* decided to cannonicalize that value. Probably a good move for them,
* but makes it useless for most users of PKCS #11.. Get the real subject
* from the certificate */
if (0 == item->derCert.size) {
ckmk_fetchCert(io);
}
return &item->subject;
case CKA_ISSUER:
if (0 == item->derCert.size) {
ckmk_fetchCert(io);
}
return &item->issuer;
case CKA_SERIAL_NUMBER:
CKMK_HANDLE_DATA_ITEM(io, kSecSerialNumberItemAttr, serial, item, *pError,
"Cert:Serial Number attr")
case CKA_VALUE:
if (0 == item->derCert.size) {
ckmk_fetchCert(io);
}
return &item->derCert;
case CKA_ID:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecPublicKeyHashItemAttr, id, item, *pError,
"Cert:ID attr")
default:
*pError = CKR_ATTRIBUTE_TYPE_INVALID;
break;
}
return NULL;
}
const NSSItem *
ckmk_FetchPubKeyAttribute
(
ckmkInternalObject *io,
CK_ATTRIBUTE_TYPE type,
CK_RV *pError
)
{
ckmkItemObject *item = &io->u.item;
*pError = CKR_OK;
switch(type) {
case CKA_CLASS:
return &ckmk_pubKeyClassItem;
case CKA_TOKEN:
case CKA_LOCAL:
return &ckmk_trueItem;
case CKA_KEY_TYPE:
return &ckmk_rsaItem;
case CKA_LABEL:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecKeyPrintName, label, item, *pError,
"PubKey:Label attr")
case CKA_ENCRYPT:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyEncrypt, encrypt, item, *pError,
"PubKey:Encrypt attr")
case CKA_VERIFY:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyVerify, verify, item, *pError,
"PubKey:Verify attr")
case CKA_VERIFY_RECOVER:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyVerifyRecover, verifyRecover,
item, *pError, "PubKey:VerifyRecover attr")
case CKA_PRIVATE:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyPrivate, private, item, *pError,
"PubKey:Private attr")
case CKA_MODIFIABLE:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyModifiable, modify, item, *pError,
"PubKey:Modify attr")
case CKA_DERIVE:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyDerive, derive, item, *pError,
"PubKey:Derive attr")
case CKA_WRAP:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyWrap, wrap, item, *pError,
"PubKey:Wrap attr")
case CKA_SUBJECT:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecSubjectItemAttr, subject, item, *pError,
"PubKey:Subect attr")
case CKA_MODULUS:
return &ckmk_emptyItem;
case CKA_PUBLIC_EXPONENT:
return &ckmk_emptyItem;
case CKA_ID:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecKeyLabel, id, item, *pError,
"PubKey:ID attr")
default:
*pError = CKR_ATTRIBUTE_TYPE_INVALID;
break;
}
return NULL;
}
const NSSItem *
ckmk_FetchPrivKeyAttribute
(
ckmkInternalObject *io,
CK_ATTRIBUTE_TYPE type,
CK_RV *pError
)
{
ckmkItemObject *item = &io->u.item;
*pError = CKR_OK;
switch(type) {
case CKA_CLASS:
return &ckmk_privKeyClassItem;
case CKA_TOKEN:
case CKA_LOCAL:
return &ckmk_trueItem;
case CKA_SENSITIVE:
case CKA_EXTRACTABLE: /* will probably move in the future */
case CKA_ALWAYS_SENSITIVE:
case CKA_NEVER_EXTRACTABLE:
return &ckmk_falseItem;
case CKA_KEY_TYPE:
return &ckmk_rsaItem;
case CKA_LABEL:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecKeyPrintName, label, item, *pError,
"PrivateKey:Label attr")
case CKA_DECRYPT:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyDecrypt, decrypt, item, *pError,
"PrivateKey:Decrypt attr")
case CKA_SIGN:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeySign, sign, item, *pError,
"PrivateKey:Sign attr")
case CKA_SIGN_RECOVER:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeySignRecover, signRecover, item, *pError,
"PrivateKey:Sign Recover attr")
case CKA_PRIVATE:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyPrivate, private, item, *pError,
"PrivateKey:Private attr")
case CKA_MODIFIABLE:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyModifiable, modify, item, *pError,
"PrivateKey:Modify attr")
case CKA_DERIVE:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyDerive, derive, item, *pError,
"PrivateKey:Derive attr")
case CKA_UNWRAP:
CKMK_HANDLE_BOOL_ITEM(io, kSecKeyUnwrap, unwrap, item, *pError,
"PrivateKey:Unwrap attr")
case CKA_SUBJECT:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecSubjectItemAttr, subject, item, *pError,
"PrivateKey:Subject attr")
case CKA_MODULUS:
if (0 == item->modulus.size) {
ckmk_fetchModulus(io);
}
return &item->modulus;
case CKA_PUBLIC_EXPONENT:
return &ckmk_emptyItem;
#ifdef notdef
/* the following are sensitive attributes. We could implement them for
* sensitive keys using the key export function, but it's better to
* just support wrap through this token. That will more reliably allow us
* to export any private key that is truly exportable.
*/
case CKA_PRIVATE_EXPONENT:
CKMK_HANDLE_DATA_ITEM(io, kSecPrivateExponentItemAttr, privateExponent,
item, *pError)
case CKA_PRIME_1:
CKMK_HANDLE_DATA_ITEM(io, kSecPrime1ItemAttr, prime1, item, *pError)
case CKA_PRIME_2:
CKMK_HANDLE_DATA_ITEM(io, kSecPrime2ItemAttr, prime2, item, *pError)
case CKA_EXPONENT_1:
CKMK_HANDLE_DATA_ITEM(io, kSecExponent1ItemAttr, exponent1, item, *pError)
case CKA_EXPONENT_2:
CKMK_HANDLE_DATA_ITEM(io, kSecExponent2ItemAttr, exponent2, item, *pError)
case CKA_COEFFICIENT:
CKMK_HANDLE_DATA_ITEM(io, kSecCoefficientItemAttr, coefficient,
item, *pError)
#endif
case CKA_ID:
CKMK_HANDLE_OPT_DATA_ITEM(io, kSecKeyLabel, id, item, *pError,
"PrivateKey:ID attr")
default:
*pError = CKR_ATTRIBUTE_TYPE_INVALID;
return NULL;
}
}
const NSSItem *
nss_ckmk_FetchAttribute
(
ckmkInternalObject *io,
CK_ATTRIBUTE_TYPE type,
CK_RV *pError
)
{
CK_ULONG i;
const NSSItem * value = NULL;
if (io->type == ckmkRaw) {
for( i = 0; i < io->u.raw.n; i++ ) {
if( type == io->u.raw.types[i] ) {
return &io->u.raw.items[i];
}
}
*pError = CKR_ATTRIBUTE_TYPE_INVALID;
return NULL;
}
/* deal with the common attributes */
switch (io->objClass) {
case CKO_CERTIFICATE:
value = ckmk_FetchCertAttribute(io, type, pError);
break;
case CKO_PRIVATE_KEY:
value = ckmk_FetchPrivKeyAttribute(io, type, pError);
break;
case CKO_PUBLIC_KEY:
value = ckmk_FetchPubKeyAttribute(io, type, pError);
break;
default:
*pError = CKR_OBJECT_HANDLE_INVALID;
return NULL;
}
#ifdef DEBUG
if (CKA_ID == type) {
itemdump("id: ", value->data, value->size, *pError);
}
#endif
return value;
}
static void
ckmk_removeObjectFromHash
(
ckmkInternalObject *io
);
/*
*
* These are the MSObject functions we need to implement
*
* Finalize - unneeded (actually we should clean up the hashtables)
* Destroy
* IsTokenObject - CK_TRUE
* GetAttributeCount
* GetAttributeTypes
* GetAttributeSize
* GetAttribute
* SetAttribute
* GetObjectSize
*/
static CK_RV
ckmk_mdObject_Destroy
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance
)
{
ckmkInternalObject *io = (ckmkInternalObject *)mdObject->etc;
OSStatus macErr;
if (ckmkRaw == io->type) {
/* there is not 'object write protected' error, use the next best thing */
return CKR_TOKEN_WRITE_PROTECTED;
}
/* This API is done well. The following 4 lines are the complete apple
* specific part of this implementation */
macErr = SecKeychainItemDelete(io->u.item.itemRef);
if (noErr != macErr) {
CKMK_MACERR("Delete object", macErr);
}
/* remove it from the hash */
ckmk_removeObjectFromHash(io);
/* free the puppy.. */
nss_ckmk_DestroyInternalObject(io);
return CKR_OK;
}
static CK_BBOOL
ckmk_mdObject_IsTokenObject
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance
)
{
return CK_TRUE;
}
static CK_ULONG
ckmk_mdObject_GetAttributeCount
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance,
CK_RV *pError
)
{
ckmkInternalObject *io = (ckmkInternalObject *)mdObject->etc;
if (ckmkRaw == io->type) {
return io->u.raw.n;
}
switch (io->objClass) {
case CKO_CERTIFICATE:
return certAttrsCount;
case CKO_PUBLIC_KEY:
return pubKeyAttrsCount;
case CKO_PRIVATE_KEY:
return privKeyAttrsCount;
default:
break;
}
return 0;
}
static CK_RV
ckmk_mdObject_GetAttributeTypes
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance,
CK_ATTRIBUTE_TYPE_PTR typeArray,
CK_ULONG ulCount
)
{
ckmkInternalObject *io = (ckmkInternalObject *)mdObject->etc;
CK_ULONG i;
CK_RV error = CKR_OK;
const CK_ATTRIBUTE_TYPE *attrs = NULL;
CK_ULONG size = ckmk_mdObject_GetAttributeCount(
mdObject, fwObject, mdSession, fwSession,
mdToken, fwToken, mdInstance, fwInstance, &error);
if( size != ulCount ) {
return CKR_BUFFER_TOO_SMALL;
}
if (io->type == ckmkRaw) {
attrs = io->u.raw.types;
} else switch(io->objClass) {
case CKO_CERTIFICATE:
attrs = certAttrs;
break;
case CKO_PUBLIC_KEY:
attrs = pubKeyAttrs;
break;
case CKO_PRIVATE_KEY:
attrs = privKeyAttrs;
break;
default:
return CKR_OK;
}
for( i = 0; i < size; i++) {
typeArray[i] = attrs[i];
}
return CKR_OK;
}
static CK_ULONG
ckmk_mdObject_GetAttributeSize
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance,
CK_ATTRIBUTE_TYPE attribute,
CK_RV *pError
)
{
ckmkInternalObject *io = (ckmkInternalObject *)mdObject->etc;
const NSSItem *b;
b = nss_ckmk_FetchAttribute(io, attribute, pError);
if ((const NSSItem *)NULL == b) {
return 0;
}
return b->size;
}
static CK_RV
ckmk_mdObject_SetAttribute
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance,
CK_ATTRIBUTE_TYPE attribute,
NSSItem *value
)
{
ckmkInternalObject *io = (ckmkInternalObject *)mdObject->etc;
SecKeychainItemRef itemRef;
if (io->type == ckmkRaw) {
return CKR_TOKEN_WRITE_PROTECTED;
}
itemRef = io->u.item.itemRef;
switch (io->objClass) {
case CKO_PRIVATE_KEY:
case CKO_PUBLIC_KEY:
switch (attribute) {
case CKA_ID:
ckmk_updateAttribute(itemRef, kSecKeyLabel,
value->data, value->size, "Set Attr Key ID");
#ifdef DEBUG
itemdump("key id: ", value->data, value->size, CKR_OK);
#endif
break;
case CKA_LABEL:
ckmk_updateAttribute(itemRef, kSecKeyPrintName, value->data,
value->size, "Set Attr Key Label");
break;
default:
break;
}
break;
case CKO_CERTIFICATE:
switch (attribute) {
case CKA_ID:
ckmk_updateAttribute(itemRef, kSecPublicKeyHashItemAttr,
value->data, value->size, "Set Attr Cert ID");
break;
case CKA_LABEL:
ckmk_updateAttribute(itemRef, kSecLabelItemAttr, value->data,
value->size, "Set Attr Cert Label");
break;
default:
break;
}
break;
default:
break;
}
return CKR_OK;
}
static NSSCKFWItem
ckmk_mdObject_GetAttribute
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance,
CK_ATTRIBUTE_TYPE attribute,
CK_RV *pError
)
{
NSSCKFWItem mdItem;
ckmkInternalObject *io = (ckmkInternalObject *)mdObject->etc;
mdItem.needsFreeing = PR_FALSE;
mdItem.item = (NSSItem*)nss_ckmk_FetchAttribute(io, attribute, pError);
return mdItem;
}
static CK_ULONG
ckmk_mdObject_GetObjectSize
(
NSSCKMDObject *mdObject,
NSSCKFWObject *fwObject,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance,
CK_RV *pError
)
{
CK_ULONG rv = 1;
/* size is irrelevant to this token */
return rv;
}
static const NSSCKMDObject
ckmk_prototype_mdObject = {
(void *)NULL, /* etc */
NULL, /* Finalize */
ckmk_mdObject_Destroy,
ckmk_mdObject_IsTokenObject,
ckmk_mdObject_GetAttributeCount,
ckmk_mdObject_GetAttributeTypes,
ckmk_mdObject_GetAttributeSize,
ckmk_mdObject_GetAttribute,
NULL, /* FreeAttribute */
ckmk_mdObject_SetAttribute,
ckmk_mdObject_GetObjectSize,
(void *)NULL /* null terminator */
};
static nssHash *ckmkInternalObjectHash = NULL;
NSS_IMPLEMENT NSSCKMDObject *
nss_ckmk_CreateMDObject
(
NSSArena *arena,
ckmkInternalObject *io,
CK_RV *pError
)
{
if ((nssHash *)NULL == ckmkInternalObjectHash) {
ckmkInternalObjectHash = nssHash_CreateItem(NULL, 10);
}
if (ckmkItem == io->type) {
/* the hash key, not a cryptographic key */
NSSItem *key = &io->hashKey;
ckmkInternalObject *old_o = NULL;
if (key->size == 0) {
ckmk_FetchHashKey(io);
}
old_o = (ckmkInternalObject *)
nssHash_Lookup(ckmkInternalObjectHash, key);
if (!old_o) {
nssHash_Add(ckmkInternalObjectHash, key, io);
} else if (old_o != io) {
nss_ckmk_DestroyInternalObject(io);
io = old_o;
}
}
if ( (void*)NULL == io->mdObject.etc) {
(void) nsslibc_memcpy(&io->mdObject,&ckmk_prototype_mdObject,
sizeof(ckmk_prototype_mdObject));
io->mdObject.etc = (void *)io;
}
return &io->mdObject;
}
static void
ckmk_removeObjectFromHash
(
ckmkInternalObject *io
)
{
NSSItem *key = &io->hashKey;
if ((nssHash *)NULL == ckmkInternalObjectHash) {
return;
}
if (key->size == 0) {
ckmk_FetchHashKey(io);
}
nssHash_Remove(ckmkInternalObjectHash, key);
return;
}
void
nss_ckmk_DestroyInternalObject
(
ckmkInternalObject *io
)
{
switch (io->type) {
case ckmkRaw:
return;
case ckmkItem:
nss_ZFreeIf(io->u.item.modify.data);
nss_ZFreeIf(io->u.item.private.data);
nss_ZFreeIf(io->u.item.encrypt.data);
nss_ZFreeIf(io->u.item.decrypt.data);
nss_ZFreeIf(io->u.item.derive.data);
nss_ZFreeIf(io->u.item.sign.data);
nss_ZFreeIf(io->u.item.signRecover.data);
nss_ZFreeIf(io->u.item.verify.data);
nss_ZFreeIf(io->u.item.verifyRecover.data);
nss_ZFreeIf(io->u.item.wrap.data);
nss_ZFreeIf(io->u.item.unwrap.data);
nss_ZFreeIf(io->u.item.label.data);
/*nss_ZFreeIf(io->u.item.subject.data); */
/*nss_ZFreeIf(io->u.item.issuer.data); */
nss_ZFreeIf(io->u.item.serial.data);
nss_ZFreeIf(io->u.item.modulus.data);
nss_ZFreeIf(io->u.item.exponent.data);
nss_ZFreeIf(io->u.item.privateExponent.data);
nss_ZFreeIf(io->u.item.prime1.data);
nss_ZFreeIf(io->u.item.prime2.data);
nss_ZFreeIf(io->u.item.exponent1.data);
nss_ZFreeIf(io->u.item.exponent2.data);
nss_ZFreeIf(io->u.item.coefficient.data);
break;
}
nss_ZFreeIf(io);
return;
}
static ckmkInternalObject *
nss_ckmk_NewInternalObject
(
CK_OBJECT_CLASS objClass,
SecKeychainItemRef itemRef,
SecItemClass itemClass,
CK_RV *pError
)
{
ckmkInternalObject *io = nss_ZNEW(NULL, ckmkInternalObject);
if ((ckmkInternalObject *)NULL == io) {
*pError = CKR_HOST_MEMORY;
return io;
}
io->type = ckmkItem;
io->objClass = objClass;
io->u.item.itemRef = itemRef;
io->u.item.itemClass = itemClass;
return io;
}
/*
* Apple doesn't alway have a default keyChain set by the OS, use the
* SearchList to try to find one.
*/
static CK_RV
ckmk_GetSafeDefaultKeychain
(
SecKeychainRef *keychainRef
)
{
OSStatus macErr;
CFArrayRef searchList = 0;
CK_RV error = CKR_OK;
macErr = SecKeychainCopyDefault(keychainRef);
if (noErr != macErr) {
int searchCount = 0;
if (errSecNoDefaultKeychain != macErr) {
CKMK_MACERR("Getting default key chain", macErr);
error = CKR_GENERAL_ERROR;
goto loser;
}
/* ok, we don't have a default key chain, find one */
macErr = SecKeychainCopySearchList(&searchList);
if (noErr != macErr) {
CKMK_MACERR("failed to find a keyring searchList", macErr);
error = CKR_DEVICE_REMOVED;
goto loser;
}
searchCount = CFArrayGetCount(searchList);
if (searchCount < 1) {
error = CKR_DEVICE_REMOVED;
goto loser;
}
*keychainRef =
(SecKeychainRef)CFRetain(CFArrayGetValueAtIndex(searchList, 0));
if (0 == *keychainRef) {
error = CKR_DEVICE_REMOVED;
goto loser;
}
/* should we set it as default? */
}
loser:
if (0 != searchList) {
CFRelease(searchList);
}
return error;
}
static ckmkInternalObject *
nss_ckmk_CreateCertificate
(
NSSCKFWSession *fwSession,
CK_ATTRIBUTE_PTR pTemplate,
CK_ULONG ulAttributeCount,
CK_RV *pError
)
{
NSSItem value;
ckmkInternalObject *io = NULL;
OSStatus macErr;
SecCertificateRef certRef;
SecKeychainItemRef itemRef;
SecKeychainRef keychainRef;
CSSM_DATA certData;
*pError = nss_ckmk_GetAttribute(CKA_VALUE, pTemplate,
ulAttributeCount, &value);
if (CKR_OK != *pError) {
goto loser;
}
certData.Data = value.data;
certData.Length = value.size;
macErr = SecCertificateCreateFromData(&certData, CSSM_CERT_X_509v3,
CSSM_CERT_ENCODING_BER, &certRef);
if (noErr != macErr) {
CKMK_MACERR("Create cert from data Failed", macErr);
*pError = CKR_GENERAL_ERROR; /* need to map macErr */
goto loser;
}
*pError = ckmk_GetSafeDefaultKeychain(&keychainRef);
if (CKR_OK != *pError) {
goto loser;
}
macErr = SecCertificateAddToKeychain( certRef, keychainRef);
itemRef = (SecKeychainItemRef) certRef;
if (errSecDuplicateItem != macErr) {
NSSItem keyID = { NULL, 0 };
char *nickname = NULL;
CK_RV dummy;
if (noErr != macErr) {
CKMK_MACERR("Add cert to keychain Failed", macErr);
*pError = CKR_GENERAL_ERROR; /* need to map macErr */
goto loser;
}
/* these two are optional */
nickname = nss_ckmk_GetStringAttribute(CKA_LABEL, pTemplate,
ulAttributeCount, &dummy);
/* we've added a new one, update the attributes in the key ring */
if (nickname) {
ckmk_updateAttribute(itemRef, kSecLabelItemAttr, nickname,
strlen(nickname)+1, "Modify Cert Label");
nss_ZFreeIf(nickname);
}
dummy = nss_ckmk_GetAttribute(CKA_ID, pTemplate,
ulAttributeCount, &keyID);
if (CKR_OK == dummy) {
dummy = ckmk_updateAttribute(itemRef, kSecPublicKeyHashItemAttr,
keyID.data, keyID.size, "Modify Cert ID");
}
}
io = nss_ckmk_NewInternalObject(CKO_CERTIFICATE, itemRef,
kSecCertificateItemClass, pError);
if ((ckmkInternalObject *)NULL != io) {
itemRef = 0;
}
loser:
if (0 != itemRef) {
CFRelease(itemRef);
}
if (0 != keychainRef) {
CFRelease(keychainRef);
}
return io;
}
/*
* PKCS #8 attributes
*/
struct ckmk_AttributeStr {
SECItem attrType;
SECItem *attrValue;
};
typedef struct ckmk_AttributeStr ckmk_Attribute;
/*
** A PKCS#8 private key info object
*/
struct PrivateKeyInfoStr {
PLArenaPool *arena;
SECItem version;
SECAlgorithmID algorithm;
SECItem privateKey;
ckmk_Attribute **attributes;
};
typedef struct PrivateKeyInfoStr PrivateKeyInfo;
const SEC_ASN1Template ckmk_RSAPrivateKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(RSAPrivateKey) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,version) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,modulus) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,publicExponent) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,privateExponent) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,prime1) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,prime2) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,exponent1) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,exponent2) },
{ SEC_ASN1_INTEGER, offsetof(RSAPrivateKey,coefficient) },
{ 0 }
};
const SEC_ASN1Template ckmk_AttributeTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(ckmk_Attribute) },
{ SEC_ASN1_OBJECT_ID, offsetof(ckmk_Attribute, attrType) },
{ SEC_ASN1_SET_OF, offsetof(ckmk_Attribute, attrValue),
SEC_AnyTemplate },
{ 0 }
};
const SEC_ASN1Template ckmk_SetOfAttributeTemplate[] = {
{ SEC_ASN1_SET_OF, 0, ckmk_AttributeTemplate },
};
SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
/* ASN1 Templates for new decoder/encoder */
const SEC_ASN1Template ckmk_PrivateKeyInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(PrivateKeyInfo) },
{ SEC_ASN1_INTEGER, offsetof(PrivateKeyInfo,version) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(PrivateKeyInfo,algorithm),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_OCTET_STRING, offsetof(PrivateKeyInfo,privateKey) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(PrivateKeyInfo, attributes), ckmk_SetOfAttributeTemplate },
{ 0 }
};
#define CKMK_PRIVATE_KEY_INFO_VERSION 0
static CK_RV
ckmk_CreateRSAKeyBlob
(
RSAPrivateKey *lk,
NSSItem *keyBlob
)
{
PrivateKeyInfo *pki = NULL;
PLArenaPool *arena = NULL;
SECOidTag algorithm = SEC_OID_UNKNOWN;
void *dummy;
SECStatus rv;
SECItem *encodedKey = NULL;
CK_RV error = CKR_OK;
arena = PORT_NewArena(2048); /* XXX different size? */
if(!arena) {
error = CKR_HOST_MEMORY;
goto loser;
}
pki = (PrivateKeyInfo*)PORT_ArenaZAlloc(arena, sizeof(PrivateKeyInfo));
if(!pki) {
error = CKR_HOST_MEMORY;
goto loser;
}
pki->arena = arena;
dummy = SEC_ASN1EncodeItem(arena, &pki->privateKey, lk,
ckmk_RSAPrivateKeyTemplate);
algorithm = SEC_OID_PKCS1_RSA_ENCRYPTION;
if (!dummy) {
error = CKR_DEVICE_ERROR; /* should map NSS SECError */
goto loser;
}
rv = SECOID_SetAlgorithmID(arena, &pki->algorithm, algorithm,
(SECItem*)NULL);
if (rv != SECSuccess) {
error = CKR_DEVICE_ERROR; /* should map NSS SECError */
goto loser;
}
dummy = SEC_ASN1EncodeInteger(arena, &pki->version,
CKMK_PRIVATE_KEY_INFO_VERSION);
if (!dummy) {
error = CKR_DEVICE_ERROR; /* should map NSS SECError */
goto loser;
}
encodedKey = SEC_ASN1EncodeItem(NULL, NULL, pki,
ckmk_PrivateKeyInfoTemplate);
if (!encodedKey) {
error = CKR_DEVICE_ERROR;
goto loser;
}
keyBlob->data = nss_ZNEWARRAY(NULL, char, encodedKey->len);
if (NULL == keyBlob->data) {
error = CKR_HOST_MEMORY;
goto loser;
}
nsslibc_memcpy(keyBlob->data, encodedKey->data, encodedKey->len);
keyBlob->size = encodedKey->len;
loser:
if(arena) {
PORT_FreeArena(arena, PR_TRUE);
}
if (encodedKey) {
SECITEM_FreeItem(encodedKey, PR_TRUE);
}
return error;
}
/*
* There MUST be a better way to do this. For now, find the key based on the
* default name Apple gives it once we import.
*/
#define IMPORTED_NAME "Imported Private Key"
static CK_RV
ckmk_FindImportedKey
(
SecKeychainRef keychainRef,
SecItemClass itemClass,
SecKeychainItemRef *outItemRef
)
{
OSStatus macErr;
SecKeychainSearchRef searchRef = 0;
SecKeychainItemRef newItemRef;
macErr = SecKeychainSearchCreateFromAttributes(keychainRef, itemClass,
NULL, &searchRef);
if (noErr != macErr) {
CKMK_MACERR("Can't search for Key", macErr);
return CKR_GENERAL_ERROR;
}
while (noErr == SecKeychainSearchCopyNext(searchRef, &newItemRef)) {
SecKeychainAttributeList *attrList = NULL;
SecKeychainAttributeInfo attrInfo;
SecItemAttr itemAttr = kSecKeyPrintName;
PRUint32 attrFormat = 0;
OSStatus macErr;
attrInfo.count = 1;
attrInfo.tag = &itemAttr;
attrInfo.format = &attrFormat;
macErr = SecKeychainItemCopyAttributesAndData(newItemRef,
&attrInfo, NULL, &attrList, NULL, NULL);
if (noErr == macErr) {
if (nsslibc_memcmp(attrList->attr->data, IMPORTED_NAME,
attrList->attr->length, NULL) == 0) {
*outItemRef = newItemRef;
CFRelease (searchRef);
SecKeychainItemFreeAttributesAndData(attrList, NULL);
return CKR_OK;
}
SecKeychainItemFreeAttributesAndData(attrList, NULL);
}
CFRelease(newItemRef);
}
CFRelease (searchRef);
return CKR_GENERAL_ERROR; /* we can come up with something better! */
}
static ckmkInternalObject *
nss_ckmk_CreatePrivateKey
(
NSSCKFWSession *fwSession,
CK_ATTRIBUTE_PTR pTemplate,
CK_ULONG ulAttributeCount,
CK_RV *pError
)
{
NSSItem attribute;
RSAPrivateKey lk;
NSSItem keyID;
char *nickname = NULL;
ckmkInternalObject *io = NULL;
CK_KEY_TYPE keyType;
OSStatus macErr;
SecKeychainItemRef itemRef = 0;
NSSItem keyBlob = { NULL, 0 };
CFDataRef dataRef = 0;
SecExternalFormat inputFormat = kSecFormatBSAFE;
/*SecExternalFormat inputFormat = kSecFormatOpenSSL; */
SecExternalItemType itemType = kSecItemTypePrivateKey;
SecKeyImportExportParameters keyParams ;
SecKeychainRef targetKeychain = 0;
unsigned char zero = 0;
CK_RV error;
keyParams.version = SEC_KEY_IMPORT_EXPORT_PARAMS_VERSION;
keyParams.flags = 0;
keyParams.passphrase = 0;
keyParams.alertTitle = 0;
keyParams.alertPrompt = 0;
keyParams.accessRef = 0; /* default */
keyParams.keyUsage = 0; /* will get filled in */
keyParams.keyAttributes = CSSM_KEYATTR_PERMANENT; /* will get filled in */
keyType = nss_ckmk_GetULongAttribute
(CKA_KEY_TYPE, pTemplate, ulAttributeCount, pError);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
if (CKK_RSA != keyType) {
*pError = CKR_ATTRIBUTE_VALUE_INVALID;
return (ckmkInternalObject *)NULL;
}
if (nss_ckmk_GetBoolAttribute(CKA_DECRYPT,
pTemplate, ulAttributeCount, CK_TRUE)) {
keyParams.keyUsage |= CSSM_KEYUSE_DECRYPT;
}
if (nss_ckmk_GetBoolAttribute(CKA_UNWRAP,
pTemplate, ulAttributeCount, CK_TRUE)) {
keyParams.keyUsage |= CSSM_KEYUSE_UNWRAP;
}
if (nss_ckmk_GetBoolAttribute(CKA_SIGN,
pTemplate, ulAttributeCount, CK_TRUE)) {
keyParams.keyUsage |= CSSM_KEYUSE_SIGN;
}
if (nss_ckmk_GetBoolAttribute(CKA_DERIVE,
pTemplate, ulAttributeCount, CK_FALSE)) {
keyParams.keyUsage |= CSSM_KEYUSE_DERIVE;
}
if (nss_ckmk_GetBoolAttribute(CKA_SENSITIVE,
pTemplate, ulAttributeCount, CK_TRUE)) {
keyParams.keyAttributes |= CSSM_KEYATTR_SENSITIVE;
}
if (nss_ckmk_GetBoolAttribute(CKA_EXTRACTABLE,
pTemplate, ulAttributeCount, CK_TRUE)) {
keyParams.keyAttributes |= CSSM_KEYATTR_EXTRACTABLE;
}
lk.version.type = siUnsignedInteger;
lk.version.data = &zero;
lk.version.len = 1;
*pError = nss_ckmk_GetAttribute(CKA_MODULUS, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.modulus.type = siUnsignedInteger;
lk.modulus.data = attribute.data;
lk.modulus.len = attribute.size;
*pError = nss_ckmk_GetAttribute(CKA_PUBLIC_EXPONENT, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.publicExponent.type = siUnsignedInteger;
lk.publicExponent.data = attribute.data;
lk.publicExponent.len = attribute.size;
*pError = nss_ckmk_GetAttribute(CKA_PRIVATE_EXPONENT, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.privateExponent.type = siUnsignedInteger;
lk.privateExponent.data = attribute.data;
lk.privateExponent.len = attribute.size;
*pError = nss_ckmk_GetAttribute(CKA_PRIME_1, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.prime1.type = siUnsignedInteger;
lk.prime1.data = attribute.data;
lk.prime1.len = attribute.size;
*pError = nss_ckmk_GetAttribute(CKA_PRIME_2, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.prime2.type = siUnsignedInteger;
lk.prime2.data = attribute.data;
lk.prime2.len = attribute.size;
*pError = nss_ckmk_GetAttribute(CKA_EXPONENT_1, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.exponent1.type = siUnsignedInteger;
lk.exponent1.data = attribute.data;
lk.exponent1.len = attribute.size;
*pError = nss_ckmk_GetAttribute(CKA_EXPONENT_2, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.exponent2.type = siUnsignedInteger;
lk.exponent2.data = attribute.data;
lk.exponent2.len = attribute.size;
*pError = nss_ckmk_GetAttribute(CKA_COEFFICIENT, pTemplate,
ulAttributeCount, &attribute);
if (CKR_OK != *pError) {
return (ckmkInternalObject *)NULL;
}
lk.coefficient.type = siUnsignedInteger;
lk.coefficient.data = attribute.data;
lk.coefficient.len = attribute.size;
/* ASN1 Encode the pkcs8 structure... look at softoken to see how this
* is done... */
error = ckmk_CreateRSAKeyBlob(&lk, &keyBlob);
if (CKR_OK != error) {
goto loser;
}
dataRef = CFDataCreate(NULL, (UInt8 *)keyBlob.data, keyBlob.size);
if (0 == dataRef) {
*pError = CKR_HOST_MEMORY;
goto loser;
}
*pError == ckmk_GetSafeDefaultKeychain(&targetKeychain);
if (CKR_OK != *pError) {
goto loser;
}
/* the itemArray that is returned is useless. the item does not
* is 'not on the key chain' so none of the modify calls work on it.
* It also has a key that isn't the same key as the one in the actual
* key chain. In short it isn't the item we want, and it gives us zero
* information about the item we want, so don't even bother with it...
*/
macErr = SecKeychainItemImport(dataRef, NULL, &inputFormat, &itemType, 0,
&keyParams, targetKeychain, NULL);
if (noErr != macErr) {
CKMK_MACERR("Import Private Key", macErr);
*pError = CKR_GENERAL_ERROR;
goto loser;
}
*pError = ckmk_FindImportedKey(targetKeychain,
CSSM_DL_DB_RECORD_PRIVATE_KEY,
&itemRef);
if (CKR_OK != *pError) {
#ifdef DEBUG
fprintf(stderr,"couldn't find key in keychain \n");
#endif
goto loser;
}
/* set the CKA_ID and the CKA_LABEL */
error = nss_ckmk_GetAttribute(CKA_ID, pTemplate,
ulAttributeCount, &keyID);
if (CKR_OK == error) {
error = ckmk_updateAttribute(itemRef, kSecKeyLabel,
keyID.data, keyID.size, "Modify Key ID");
#ifdef DEBUG
itemdump("key id: ", keyID.data, keyID.size, error);
#endif
}
nickname = nss_ckmk_GetStringAttribute(CKA_LABEL, pTemplate,
ulAttributeCount, &error);
if (nickname) {
ckmk_updateAttribute(itemRef, kSecKeyPrintName, nickname,
strlen(nickname)+1, "Modify Key Label");
} else {
#define DEFAULT_NICKNAME "NSS Imported Key"
ckmk_updateAttribute(itemRef, kSecKeyPrintName, DEFAULT_NICKNAME,
sizeof(DEFAULT_NICKNAME), "Modify Key Label");
}
io = nss_ckmk_NewInternalObject(CKO_PRIVATE_KEY, itemRef,
CSSM_DL_DB_RECORD_PRIVATE_KEY, pError);
if ((ckmkInternalObject *)NULL == io) {
CFRelease(itemRef);
}
return io;
loser:
/* free the key blob */
if (keyBlob.data) {
nss_ZFreeIf(keyBlob.data);
}
if (0 != targetKeychain) {
CFRelease(targetKeychain);
}
if (0 != dataRef) {
CFRelease(dataRef);
}
return io;
}
NSS_EXTERN NSSCKMDObject *
nss_ckmk_CreateObject
(
NSSCKFWSession *fwSession,
CK_ATTRIBUTE_PTR pTemplate,
CK_ULONG ulAttributeCount,
CK_RV *pError
)
{
CK_OBJECT_CLASS objClass;
ckmkInternalObject *io = NULL;
CK_BBOOL isToken;
/*
* only create token objects
*/
isToken = nss_ckmk_GetBoolAttribute(CKA_TOKEN, pTemplate,
ulAttributeCount, CK_FALSE);
if (!isToken) {
*pError = CKR_ATTRIBUTE_VALUE_INVALID;
return (NSSCKMDObject *) NULL;
}
/*
* only create keys and certs.
*/
objClass = nss_ckmk_GetULongAttribute(CKA_CLASS, pTemplate,
ulAttributeCount, pError);
if (CKR_OK != *pError) {
return (NSSCKMDObject *) NULL;
}
#ifdef notdef
if (objClass == CKO_PUBLIC_KEY) {
return CKR_OK; /* fake public key creation, happens as a side effect of
* private key creation */
}
#endif
if (objClass == CKO_CERTIFICATE) {
io = nss_ckmk_CreateCertificate(fwSession, pTemplate,
ulAttributeCount, pError);
} else if (objClass == CKO_PRIVATE_KEY) {
io = nss_ckmk_CreatePrivateKey(fwSession, pTemplate,
ulAttributeCount, pError);
} else {
*pError = CKR_ATTRIBUTE_VALUE_INVALID;
}
if ((ckmkInternalObject *)NULL == io) {
return (NSSCKMDObject *) NULL;
}
return nss_ckmk_CreateMDObject(NULL, io, pError);
}
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