diff options
Diffstat (limited to 'security/nss/lib/ssl/prelib.c')
| -rw-r--r-- | security/nss/lib/ssl/prelib.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/security/nss/lib/ssl/prelib.c b/security/nss/lib/ssl/prelib.c new file mode 100644 index 000000000..1c7351a39 --- /dev/null +++ b/security/nss/lib/ssl/prelib.c @@ -0,0 +1,251 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil -*- */ + +/* + * Functions used by https servers to send (download) pre-encrypted files + * over SSL connections that use Fortezza ciphersuites. + * + * The contents of this file are subject to the Mozilla Public + * License Version 1.1 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS + * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or + * implied. See the License for the specific language governing + * rights and limitations under the License. + * + * The Original Code is the Netscape security libraries. + * + * The Initial Developer of the Original Code is Netscape + * Communications Corporation. Portions created by Netscape are + * Copyright (C) 1994-2000 Netscape Communications Corporation. All + * Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the + * terms of the GNU General Public License Version 2 or later (the + * "GPL"), in which case the provisions of the GPL are applicable + * instead of those above. If you wish to allow use of your + * version of this file only under the terms of the GPL and not to + * allow others to use your version of this file under the MPL, + * indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by + * the GPL. If you do not delete the provisions above, a recipient + * may use your version of this file under either the MPL or the + * GPL. + * + * $Id$ + */ + +#include "cert.h" +#include "ssl.h" +#include "keyhi.h" +#include "secitem.h" +#include "sslimpl.h" +#include "pkcs11t.h" +#include "preenc.h" +#include "pk11func.h" + +static unsigned char fromHex(char x) { + if ((x >= '0') && (x <= '9')) return x-'0'; + if ((x >= 'a') && (x <= 'f')) return x-'a'+10; + return x-'A'+10; +} + +PEHeader *SSL_PreencryptedStreamToFile(PRFileDesc *fd, PEHeader *inHeader, + int *headerSize) +{ + PK11SymKey *key, *tek, *Ks; + sslSocket *ss; + PK11SlotInfo *slot; + CK_TOKEN_INFO info; + int oldHeaderSize; + PEHeader *header; + SECStatus rv; + SECItem item; + int i; + + if (fd == NULL) { + /* XXX set an error */ + return NULL; + } + + ss = ssl_FindSocket(fd); + if (ss == NULL) { + return NULL; + } + + PORT_Assert(ss->ssl3 != NULL); + if (ss->ssl3 == NULL) { + return NULL; + } + + if (GetInt2(inHeader->magic) != PRE_MAGIC) { + return NULL; + } + + oldHeaderSize = GetInt2(inHeader->len); + header = (PEHeader *) PORT_ZAlloc(oldHeaderSize); + if (header == NULL) { + return NULL; + } + + switch (GetInt2(inHeader->type)) { + case PRE_FORTEZZA_FILE: + case PRE_FORTEZZA_GEN_STREAM: + case PRE_FIXED_FILE: + case PRE_RSA_FILE: + default: + *headerSize = oldHeaderSize; + PORT_Memcpy(header,inHeader,oldHeaderSize); + return header; + + case PRE_FORTEZZA_STREAM: + *headerSize = PE_BASE_HEADER_LEN + sizeof(PEFortezzaHeader); + PutInt2(header->magic,PRE_MAGIC); + PutInt2(header->len,*headerSize); + PutInt2(header->type, PRE_FORTEZZA_FILE); + PORT_Memcpy(header->version,inHeader->version,sizeof(header->version)); + PORT_Memcpy(header->u.fortezza.hash,inHeader->u.fortezza.hash, + sizeof(header->u.fortezza.hash)); + PORT_Memcpy(header->u.fortezza.iv,inHeader->u.fortezza.iv, + sizeof(header->u.fortezza.iv)); + + /* get the kea context from the session */ + tek = ss->ssl3->fortezza.tek; + if (tek == NULL) { + PORT_Free(header); + return NULL; + } + + + /* get the slot and the serial number */ + slot = PK11_GetSlotFromKey(tek); + if (slot == NULL) { + PORT_Free(header); + return NULL; + } + rv = PK11_GetTokenInfo(slot,&info); + if (rv != SECSuccess) { + PORT_Free(header); + PK11_FreeSlot(slot); + return NULL; + } + + /* Look up the Token Fixed Key */ + Ks = PK11_FindFixedKey(slot, CKM_SKIPJACK_WRAP, NULL, ss->pkcs11PinArg); + PK11_FreeSlot(slot); + if (Ks == NULL) { + PORT_Free(header); + return NULL; + } + + /* unwrap the key with the TEK */ + item.data = inHeader->u.fortezza.key; + item.len = sizeof(inHeader->u.fortezza.key); + key = PK11_UnwrapSymKey(tek,CKM_SKIPJACK_WRAP, + NULL, &item, CKM_SKIPJACK_CBC64, CKA_DECRYPT, 0); + if (key == NULL) { + PORT_Free(header); + PK11_FreeSymKey(Ks); + return NULL; + } + + /* rewrap with the local Ks */ + item.data = header->u.fortezza.key; + item.len = sizeof(header->u.fortezza.key); + rv = PK11_WrapSymKey(CKM_SKIPJACK_WRAP, NULL, Ks, key, &item); + PK11_FreeSymKey(Ks); + PK11_FreeSymKey(key); + if (rv != SECSuccess) { + PORT_Free(header); + return NULL; + } + + /* copy our local serial number into header */ + for (i=0; i < sizeof(header->u.fortezza.serial); i++) { + header->u.fortezza.serial[i] = + (fromHex(info.serialNumber[i*2]) << 4) | + fromHex(info.serialNumber[i*2 + 1]); + } + break; + case PRE_FIXED_STREAM: + /* not implemented yet */ + PORT_Free(header); + return NULL; + } + + return(header); +} + +/* + * this one needs to allocate space and work for RSA & FIXED key files as well + */ +PEHeader *SSL_PreencryptedFileToStream(PRFileDesc *fd, PEHeader *header, + int *headerSize) +{ + PK11SymKey *key, *tek, *Ks; + sslSocket *ss; + PK11SlotInfo *slot; + SECStatus rv; + SECItem item; + + *headerSize = 0; /* hack */ + + if (fd == NULL) { + /* XXX set an error */ + return NULL; + } + + ss = ssl_FindSocket(fd); + if (ss == NULL) { + return NULL; + } + + PORT_Assert(ss->ssl3 != NULL); + if (ss->ssl3 == NULL) { + return NULL; + } + + /* get the kea context from the session */ + tek = ss->ssl3->fortezza.tek; + if (tek == NULL) { + return NULL; + } + + slot = PK11_GetSlotFromKey(tek); + if (slot == NULL) return NULL; + Ks = PK11_FindFixedKey(slot, CKM_SKIPJACK_WRAP, NULL, PK11_GetWindow(tek)); + PK11_FreeSlot(slot); + if (Ks == NULL) return NULL; + + + /* unwrap with the local Ks */ + item.data = header->u.fortezza.key; + item.len = sizeof(header->u.fortezza.key); + /* rewrap the key with the TEK */ + key = PK11_UnwrapSymKey(Ks,CKM_SKIPJACK_WRAP, + NULL, &item, CKM_SKIPJACK_CBC64, CKA_DECRYPT, 0); + if (key == NULL) { + PK11_FreeSymKey(Ks); + return NULL; + } + + rv = PK11_WrapSymKey(CKM_SKIPJACK_WRAP, NULL, tek, key, &item); + PK11_FreeSymKey(Ks); + PK11_FreeSymKey(key); + if (rv != SECSuccess) { + return NULL; + } + + /* copy over our local serial number */ + PORT_Memset(header->u.fortezza.serial,0,sizeof(header->u.fortezza.serial)); + + /* change type to stream */ + PutInt2(header->type, PRE_FORTEZZA_STREAM); + + return(header); +} + + |