Change the NSS and NSPR source tree to the new directory structure to be

mozilla/security/nss/lib/pk11wrap/pk11cxt.c

Index: mozilla/security/nss/lib/pk11wrap/pk11cxt.c
===================================================================
--- mozilla/security/nss/lib/pk11wrap/pk11cxt.c	(revision 191424)
+++ mozilla/security/nss/lib/pk11wrap/pk11cxt.c	(working copy)
@@ -1,1039 +0,0 @@
-/* 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/. */
-/*
- * This file PK11Contexts which are  used in multipart hashing, 
- * encryption/decryption, and signing/verication operations.
- */
-
-#include "seccomon.h"
-#include "secmod.h"
-#include "nssilock.h"
-#include "secmodi.h"
-#include "secmodti.h"
-#include "pkcs11.h"
-#include "pk11func.h"
-#include "secitem.h"
-#include "secoid.h" 
-#include "sechash.h"
-#include "secerr.h"
-
-static const SECItem pk11_null_params = { 0 };
-
-/**********************************************************************
- *
- *                   Now Deal with Crypto Contexts
- *
- **********************************************************************/
-
-/*
- * the monitors...
- */
-void
-PK11_EnterContextMonitor(PK11Context *cx) {
-    /* if we own the session and our slot is ThreadSafe, only monitor
-     * the Context */
-    if ((cx->ownSession) && (cx->slot->isThreadSafe)) {
-	/* Should this use monitors instead? */
-	PZ_Lock(cx->sessionLock);
-    } else {
-	PK11_EnterSlotMonitor(cx->slot);
-    }
-}
-
-void
-PK11_ExitContextMonitor(PK11Context *cx) {
-    /* if we own the session and our slot is ThreadSafe, only monitor
-     * the Context */
-    if ((cx->ownSession) && (cx->slot->isThreadSafe)) {
-	/* Should this use monitors instead? */
-	PZ_Unlock(cx->sessionLock);
-    } else {
-	PK11_ExitSlotMonitor(cx->slot);
-    }
-}
-
-/*
- * Free up a Cipher Context
- */
-void
-PK11_DestroyContext(PK11Context *context, PRBool freeit)
-{
-    pk11_CloseSession(context->slot,context->session,context->ownSession);
-    /* initialize the critical fields of the context */
-    if (context->savedData != NULL ) PORT_Free(context->savedData);
-    if (context->key) PK11_FreeSymKey(context->key);
-    if (context->param && context->param != &pk11_null_params)
-	SECITEM_FreeItem(context->param, PR_TRUE);
-    if (context->sessionLock) PZ_DestroyLock(context->sessionLock);
-    PK11_FreeSlot(context->slot);
-    if (freeit) PORT_Free(context);
-}
-
-/*
- * save the current context. Allocate Space if necessary.
- */
-static unsigned char *
-pk11_saveContextHelper(PK11Context *context, unsigned char *buffer, 
-                       unsigned long *savedLength)
-{
-    CK_RV crv;
-
-    /* If buffer is NULL, this will get the length */
-    crv = PK11_GETTAB(context->slot)->C_GetOperationState(context->session,
-                                                          (CK_BYTE_PTR)buffer,
-                                                          savedLength);
-    if (!buffer || (crv == CKR_BUFFER_TOO_SMALL)) {
-	/* the given buffer wasn't big enough (or was NULL), but we 
-	 * have the length, so try again with a new buffer and the 
-	 * correct length
-	 */
-	unsigned long bufLen = *savedLength;
-	buffer = PORT_Alloc(bufLen);
-	if (buffer == NULL) {
-	    return (unsigned char *)NULL;
-	}
-	crv = PK11_GETTAB(context->slot)->C_GetOperationState(
-	                                                  context->session,
-                                                          (CK_BYTE_PTR)buffer,
-                                                          savedLength);
-	if (crv != CKR_OK) {
-	    PORT_ZFree(buffer, bufLen);
-	}
-    }
-    if (crv != CKR_OK) {
-	PORT_SetError( PK11_MapError(crv) );
-	return (unsigned char *)NULL;
-    }
-    return buffer;
-}
-
-void *
-pk11_saveContext(PK11Context *context, void *space, unsigned long *savedLength)
-{
-    return pk11_saveContextHelper(context, 
-                                  (unsigned char *)space, savedLength);
-}
-
-/*
- * restore the current context
- */
-SECStatus
-pk11_restoreContext(PK11Context *context,void *space, unsigned long savedLength)
-{
-    CK_RV crv;
-    CK_OBJECT_HANDLE objectID = (context->key) ? context->key->objectID:
-			CK_INVALID_HANDLE;
-
-    PORT_Assert(space != NULL);
-    if (space == NULL) {
-	PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
-	return SECFailure;
-    }
-    crv = PK11_GETTAB(context->slot)->C_SetOperationState(context->session,
-        (CK_BYTE_PTR)space, savedLength, objectID, 0);
-    if (crv != CKR_OK) {
-       PORT_SetError( PK11_MapError(crv));
-       return SECFailure;
-   }
-   return SECSuccess;
-}
-
-SECStatus pk11_Finalize(PK11Context *context);
-
-/*
- * Context initialization. Used by all flavors of CreateContext
- */
-static SECStatus 
-pk11_context_init(PK11Context *context, CK_MECHANISM *mech_info)
-{
-    CK_RV crv;
-    PK11SymKey *symKey = context->key;
-    SECStatus rv = SECSuccess;
-
-    switch (context->operation) {
-    case CKA_ENCRYPT:
-	crv=PK11_GETTAB(context->slot)->C_EncryptInit(context->session,
-				mech_info, symKey->objectID);
-	break;
-    case CKA_DECRYPT:
-	if (context->fortezzaHack) {
-	    CK_ULONG count = 0;;
-	    /* generate the IV for fortezza */
-	    crv=PK11_GETTAB(context->slot)->C_EncryptInit(context->session,
-				mech_info, symKey->objectID);
-	    if (crv != CKR_OK) break;
-	    PK11_GETTAB(context->slot)->C_EncryptFinal(context->session,
-				NULL, &count);
-	}
-	crv=PK11_GETTAB(context->slot)->C_DecryptInit(context->session,
-				mech_info, symKey->objectID);
-	break;
-    case CKA_SIGN:
-	crv=PK11_GETTAB(context->slot)->C_SignInit(context->session,
-				mech_info, symKey->objectID);
-	break;
-    case CKA_VERIFY:
-	crv=PK11_GETTAB(context->slot)->C_SignInit(context->session,
-				mech_info, symKey->objectID);
-	break;
-    case CKA_DIGEST:
-	crv=PK11_GETTAB(context->slot)->C_DigestInit(context->session,
-				mech_info);
-	break;
-    default:
-	crv = CKR_OPERATION_NOT_INITIALIZED;
-	break;
-    }
-
-    if (crv != CKR_OK) {
-        PORT_SetError( PK11_MapError(crv) );
-        return SECFailure;
-    }
-
-    /*
-     * handle session starvation case.. use our last session to multiplex
-     */
-    if (!context->ownSession) {
-	context->savedData = pk11_saveContext(context,context->savedData,
-				&context->savedLength);
-	if (context->savedData == NULL) rv = SECFailure;
-	/* clear out out session for others to use */
-	pk11_Finalize(context);
-    }
-    return rv;
-}
-
-
-/*
- * Common Helper Function do come up with a new context.
- */
-static PK11Context *pk11_CreateNewContextInSlot(CK_MECHANISM_TYPE type,
-     PK11SlotInfo *slot, CK_ATTRIBUTE_TYPE operation, PK11SymKey *symKey,
-							     SECItem *param)
-{
-    CK_MECHANISM mech_info;
-    PK11Context *context;
-    SECStatus rv;
-	
-    PORT_Assert(slot != NULL);
-    if (!slot || (!symKey && ((operation != CKA_DIGEST) || 
-	                      (type == CKM_SKIPJACK_CBC64)))) {
-	PORT_SetError(SEC_ERROR_INVALID_ARGS);
-	return NULL;
-    }
-    context = (PK11Context *) PORT_Alloc(sizeof(PK11Context));
-    if (context == NULL) {
-	return NULL;
-    }
-
-    /* now deal with the fortezza hack... the fortezza hack is an attempt
-     * to get around the issue of the card not allowing you to do a FORTEZZA
-     * LoadIV/Encrypt, which was added because such a combination could be
-     * use to circumvent the key escrow system. Unfortunately SSL needs to
-     * do this kind of operation, so in SSL we do a loadIV (to verify it),
-     * Then GenerateIV, and through away the first 8 bytes on either side
-     * of the connection.*/
-    context->fortezzaHack = PR_FALSE;
-    if (type == CKM_SKIPJACK_CBC64) {
-	if (symKey->origin == PK11_OriginFortezzaHack) {
-	    context->fortezzaHack = PR_TRUE;
-	}
-    }
-
-    /* initialize the critical fields of the context */
-    context->operation = operation;
-    context->key = symKey ? PK11_ReferenceSymKey(symKey) : NULL;
-    context->slot = PK11_ReferenceSlot(slot);
-    context->session = pk11_GetNewSession(slot,&context->ownSession);
-    context->cx = symKey ? symKey->cx : NULL;
-    /* get our session */
-    context->savedData = NULL;
-
-    /* save the parameters so that some digesting stuff can do multiple
-     * begins on a single context */
-    context->type = type;
-    if (param) {
-	if (param->len > 0) {
-	    context->param = SECITEM_DupItem(param);
-	} else {
-	    context->param = (SECItem *)&pk11_null_params;
-	}
-    } else {
-	PORT_SetError(SEC_ERROR_INVALID_ARGS);
-	context->param = NULL;
-    }
-    context->init = PR_FALSE;
-    context->sessionLock = PZ_NewLock(nssILockPK11cxt);
-    if ((context->param == NULL) || (context->sessionLock == NULL)) {
-	PK11_DestroyContext(context,PR_TRUE);
-	return NULL;
-    }
-
-    mech_info.mechanism = type;
-    mech_info.pParameter = param->data;
-    mech_info.ulParameterLen = param->len;
-    PK11_EnterContextMonitor(context);
-    rv = pk11_context_init(context,&mech_info);
-    PK11_ExitContextMonitor(context);
-
-    if (rv != SECSuccess) {
-	PK11_DestroyContext(context,PR_TRUE);
-	return NULL;
-    }
-    context->init = PR_TRUE;
-    return context;
-}
-
-
-/*
- * put together the various PK11_Create_Context calls used by different
- * parts of libsec.
- */
-PK11Context *
-__PK11_CreateContextByRawKey(PK11SlotInfo *slot, CK_MECHANISM_TYPE type,
-     PK11Origin origin, CK_ATTRIBUTE_TYPE operation, SECItem *key, 
-						SECItem *param, void *wincx)
-{
-    PK11SymKey *symKey = NULL;
-    PK11Context *context = NULL;
-
-    /* first get a slot */
-    if (slot == NULL) {
-	slot = PK11_GetBestSlot(type,wincx);
-	if (slot == NULL) {
-	    PORT_SetError( SEC_ERROR_NO_MODULE );
-	    goto loser;
-	}
-    } else {
-	PK11_ReferenceSlot(slot);
-    }
-
-    /* now import the key */
-    symKey = PK11_ImportSymKey(slot, type, origin, operation,  key, wincx);
-    if (symKey == NULL) goto loser;
-
-    context = PK11_CreateContextBySymKey(type, operation, symKey, param);
-
-loser:
-    if (symKey) {
-        PK11_FreeSymKey(symKey);
-    }
-    if (slot) {
-        PK11_FreeSlot(slot);
-    }
-
-    return context;
-}
-
-PK11Context *
-PK11_CreateContextByRawKey(PK11SlotInfo *slot, CK_MECHANISM_TYPE type,
-     PK11Origin origin, CK_ATTRIBUTE_TYPE operation, SECItem *key, 
-						SECItem *param, void *wincx)
-{
-    return __PK11_CreateContextByRawKey(slot, type, origin, operation,
-                                        key, param, wincx);
-}
-
-
-/*
- * Create a context from a key. We really should make sure we aren't using
- * the same key in multiple session!
- */
-PK11Context *
-PK11_CreateContextBySymKey(CK_MECHANISM_TYPE type,CK_ATTRIBUTE_TYPE operation,
-			PK11SymKey *symKey, SECItem *param)
-{
-    PK11SymKey *newKey;
-    PK11Context *context;
-
-    /* if this slot doesn't support the mechanism, go to a slot that does */
-    newKey = pk11_ForceSlot(symKey,type,operation);
-    if (newKey == NULL) {
-	PK11_ReferenceSymKey(symKey);
-    } else {
-	symKey = newKey;
-    }
-
-
-    /* Context Adopts the symKey.... */
-    context = pk11_CreateNewContextInSlot(type, symKey->slot, operation, symKey,
-							     param);
-    PK11_FreeSymKey(symKey);
-    return context;
-}
-
-/*
- * Digest contexts don't need keys, but the do need to find a slot.
- * Macing should use PK11_CreateContextBySymKey.
- */
-PK11Context *
-PK11_CreateDigestContext(SECOidTag hashAlg)
-{
-    /* digesting has to work without authentication to the slot */
-    CK_MECHANISM_TYPE type;
-    PK11SlotInfo *slot;
-    PK11Context *context;
-    SECItem param;
-
-    type = PK11_AlgtagToMechanism(hashAlg);
-    slot = PK11_GetBestSlot(type, NULL);
-    if (slot == NULL) {
-	PORT_SetError( SEC_ERROR_NO_MODULE );
-	return NULL;
-    }
-
-    /* maybe should really be PK11_GenerateNewParam?? */
-    param.data = NULL;
-    param.len = 0;
-    param.type = 0;
-
-    context = pk11_CreateNewContextInSlot(type, slot, CKA_DIGEST, NULL, &param);
-    PK11_FreeSlot(slot);
-    return context;
-}
-
-/*
- * create a new context which is the clone of the state of old context.
- */
-PK11Context * PK11_CloneContext(PK11Context *old)
-{
-     PK11Context *newcx;
-     PRBool needFree = PR_FALSE;
-     SECStatus rv = SECSuccess;
-     void *data;
-     unsigned long len;
-
-     newcx = pk11_CreateNewContextInSlot(old->type, old->slot, old->operation,
-						old->key, old->param);
-     if (newcx == NULL) return NULL;
-
-     /* now clone the save state. First we need to find the save state
-      * of the old session. If the old context owns it's session,
-      * the state needs to be saved, otherwise the state is in saveData. */
-     if (old->ownSession) {
-        PK11_EnterContextMonitor(old);
-	data=pk11_saveContext(old,NULL,&len);
-        PK11_ExitContextMonitor(old);
-	needFree = PR_TRUE;
-     } else {
-	data = old->savedData;
-	len = old->savedLength;
-     }
-
-     if (data == NULL) {
-	PK11_DestroyContext(newcx,PR_TRUE);
-	return NULL;
-     }
-
-     /* now copy that state into our new context. Again we have different
-      * work if the new context owns it's own session. If it does, we
-      * restore the state gathered above. If it doesn't, we copy the
-      * saveData pointer... */
-     if (newcx->ownSession) {
-        PK11_EnterContextMonitor(newcx);
-	rv = pk11_restoreContext(newcx,data,len);
-        PK11_ExitContextMonitor(newcx);
-     } else {
-	PORT_Assert(newcx->savedData != NULL);
-	if ((newcx->savedData == NULL) || (newcx->savedLength < len)) {
-	    PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
-	    rv = SECFailure;
-	} else {
-	    PORT_Memcpy(newcx->savedData,data,len);
-	    newcx->savedLength = len;
-	}
-    }
-
-    if (needFree) PORT_Free(data);
-
-    if (rv != SECSuccess) {
-	PK11_DestroyContext(newcx,PR_TRUE);
-	return NULL;
-    }
-    return newcx;
-}
-
-/*
- * save the current context state into a variable. Required to make FORTEZZA
- * work.
- */
-SECStatus
-PK11_SaveContext(PK11Context *cx,unsigned char *save,int *len, int saveLength)
-{
-    unsigned char * data = NULL;
-    CK_ULONG length = saveLength;
-
-    if (cx->ownSession) {
-        PK11_EnterContextMonitor(cx);
-	data = pk11_saveContextHelper(cx, save, &length);
-        PK11_ExitContextMonitor(cx);
-	if (data) *len = length;
-    } else if ((unsigned) saveLength >= cx->savedLength) {
-	data = (unsigned char*)cx->savedData;
-	if (cx->savedData) {
-	    PORT_Memcpy(save,cx->savedData,cx->savedLength);
-	}
-	*len = cx->savedLength;
-    }
-    if (data != NULL) {
-	if (cx->ownSession) {
-	    PORT_ZFree(data, length);
-	}
-	return SECSuccess;
-    } else {
-	return SECFailure;
-    }
-}
-
-/* same as above, but may allocate the return buffer. */
-unsigned char *
-PK11_SaveContextAlloc(PK11Context *cx,
-                      unsigned char *preAllocBuf, unsigned int pabLen,
-                      unsigned int *stateLen)
-{
-    unsigned char *stateBuf = NULL;
-    unsigned long length = (unsigned long)pabLen;
-
-    if (cx->ownSession) {
-        PK11_EnterContextMonitor(cx);
-	stateBuf = pk11_saveContextHelper(cx, preAllocBuf, &length);
-        PK11_ExitContextMonitor(cx);
-	*stateLen = (stateBuf != NULL) ? length : 0;
-    } else {
-	if (pabLen < cx->savedLength) {
-	    stateBuf = (unsigned char *)PORT_Alloc(cx->savedLength);
-	    if (!stateBuf) {
-		return (unsigned char *)NULL;
-	    }
-	} else {
-	    stateBuf = preAllocBuf;
-	}
-	if (cx->savedData) {
-	    PORT_Memcpy(stateBuf, cx->savedData, cx->savedLength);
-	}
-	*stateLen = cx->savedLength;
-    }
-    return stateBuf;
-}
-
-/*
- * restore the context state into a new running context. Also required for
- * FORTEZZA .
- */
-SECStatus
-PK11_RestoreContext(PK11Context *cx,unsigned char *save,int len)
-{
-    SECStatus rv = SECSuccess;
-    if (cx->ownSession) {
-        PK11_EnterContextMonitor(cx);
-	pk11_Finalize(cx);
-	rv = pk11_restoreContext(cx,save,len);
-        PK11_ExitContextMonitor(cx);
-    } else {
-	PORT_Assert(cx->savedData != NULL);
-	if ((cx->savedData == NULL) || (cx->savedLength < (unsigned) len)) {
-	    PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
-	    rv = SECFailure;
-	} else {
-	    PORT_Memcpy(cx->savedData,save,len);
-	    cx->savedLength = len;
-	}
-    }
-    return rv;
-}
-
-/*
- * This is  to get FIPS compliance until we can convert
- * libjar to use PK11_ hashing functions. It returns PR_FALSE
- * if we can't get a PK11 Context.
- */
-PRBool
-PK11_HashOK(SECOidTag algID) {
-    PK11Context *cx;
-
-    cx = PK11_CreateDigestContext(algID);
-    if (cx == NULL) return PR_FALSE;
-    PK11_DestroyContext(cx, PR_TRUE);
-    return PR_TRUE;
-}
-
-
-
-/*
- * start a new digesting or Mac'ing operation on this context
- */
-SECStatus PK11_DigestBegin(PK11Context *cx)
-{
-    CK_MECHANISM mech_info;
-    SECStatus rv;
-
-    if (cx->init == PR_TRUE) {
-	return SECSuccess;
-    }
-
-    /*
-     * make sure the old context is clear first
-     */
-    PK11_EnterContextMonitor(cx);
-    pk11_Finalize(cx);
-
-    mech_info.mechanism = cx->type;
-    mech_info.pParameter = cx->param->data;
-    mech_info.ulParameterLen = cx->param->len;
-    rv = pk11_context_init(cx,&mech_info);
-    PK11_ExitContextMonitor(cx);
-
-    if (rv != SECSuccess) {
-	return SECFailure;
-    }
-    cx->init = PR_TRUE;
-    return SECSuccess;
-}
-
-SECStatus
-PK11_HashBuf(SECOidTag hashAlg, unsigned char *out, const unsigned char *in,
-								PRInt32 len) {
-    PK11Context *context;
-    unsigned int max_length;
-    unsigned int out_length;
-    SECStatus rv;
-
-    /* len will be passed to PK11_DigestOp as unsigned. */
-    if (len < 0) {
-        PORT_SetError(SEC_ERROR_INVALID_ARGS);
-        return SECFailure;
-    }
-
-    context = PK11_CreateDigestContext(hashAlg);
-    if (context == NULL) return SECFailure;
-
-    rv = PK11_DigestBegin(context);
-    if (rv != SECSuccess) {
-	PK11_DestroyContext(context, PR_TRUE);
-	return rv;
-    }
-
-    rv = PK11_DigestOp(context, in, len);
-    if (rv != SECSuccess) {
-	PK11_DestroyContext(context, PR_TRUE);
-	return rv;
-    }
-
-    /* XXX This really should have been an argument to this function! */
-    max_length = HASH_ResultLenByOidTag(hashAlg);
-    PORT_Assert(max_length);
-    if (!max_length)
-    	max_length = HASH_LENGTH_MAX;
-
-    rv = PK11_DigestFinal(context,out,&out_length,max_length);
-    PK11_DestroyContext(context, PR_TRUE);
-    return rv;
-}
-
-
-/*
- * execute a bulk encryption operation
- */
-SECStatus
-PK11_CipherOp(PK11Context *context, unsigned char * out, int *outlen, 
-				int maxout, const unsigned char *in, int inlen)
-{
-    CK_RV crv = CKR_OK;
-    CK_ULONG length = maxout;
-    CK_ULONG offset =0;
-    SECStatus rv = SECSuccess;
-    unsigned char *saveOut = out;
-    unsigned char *allocOut = NULL;
-
-    /* if we ran out of session, we need to restore our previously stored
-     * state.
-     */
-    PK11_EnterContextMonitor(context);
-    if (!context->ownSession) {
-        rv = pk11_restoreContext(context,context->savedData,
-							context->savedLength);
-	if (rv != SECSuccess) {
-	    PK11_ExitContextMonitor(context);
-	    return rv;
-	}
-    }
-
-    /*
-     * The fortezza hack is to send 8 extra bytes on the first encrypted and
-     * lose them on the first decrypt.
-     */
-    if (context->fortezzaHack) {
-	unsigned char random[8];
-	if (context->operation == CKA_ENCRYPT) {
-	    PK11_ExitContextMonitor(context);
-	    rv = PK11_GenerateRandom(random,sizeof(random));
-    	    PK11_EnterContextMonitor(context);
-
-	    /* since we are offseting the output, we can't encrypt back into
-	     * the same buffer... allocate a temporary buffer just for this
-	     * call. */
-	    allocOut = out = (unsigned char*)PORT_Alloc(maxout);
-	    if (out == NULL) {
-		PK11_ExitContextMonitor(context);
-		return SECFailure;
-	    }
-	    crv = PK11_GETTAB(context->slot)->C_EncryptUpdate(context->session,
-		random,sizeof(random),out,&length);
-
-	    out += length;
-	    maxout -= length;
-	    offset = length;
-	} else if (context->operation == CKA_DECRYPT) {
-	    length = sizeof(random);
-	    crv = PK11_GETTAB(context->slot)->C_DecryptUpdate(context->session,
-		(CK_BYTE_PTR)in,sizeof(random),random,&length);
-	    inlen -= length;
-	    in += length;
-	    context->fortezzaHack = PR_FALSE;
-	}
-    }
-
-    switch (context->operation) {
-    case CKA_ENCRYPT:
-	length = maxout;
-	crv=PK11_GETTAB(context->slot)->C_EncryptUpdate(context->session,
-							(CK_BYTE_PTR)in, inlen,
-							out, &length);
-	length += offset;
-	break;
-    case CKA_DECRYPT:
-	length = maxout;
-	crv=PK11_GETTAB(context->slot)->C_DecryptUpdate(context->session,
-							(CK_BYTE_PTR)in, inlen,
-							out, &length);
-	break;
-    default:
-	crv = CKR_OPERATION_NOT_INITIALIZED;
-	break;
-    }
-
-    if (crv != CKR_OK) {
-        PORT_SetError( PK11_MapError(crv) );
-	*outlen = 0;
-        rv = SECFailure;
-    } else {
-    	*outlen = length;
-    }
-
-    if (context->fortezzaHack) {
-	if (context->operation == CKA_ENCRYPT) {
-	    PORT_Assert(allocOut);
-	    PORT_Memcpy(saveOut, allocOut, length);
-	    PORT_Free(allocOut);
-	}
-	context->fortezzaHack = PR_FALSE;
-    }
-
-    /*
-     * handle session starvation case.. use our last session to multiplex
-     */
-    if (!context->ownSession) {
-	context->savedData = pk11_saveContext(context,context->savedData,
-				&context->savedLength);
-	if (context->savedData == NULL) rv = SECFailure;
-	
-	/* clear out out session for others to use */
-	pk11_Finalize(context);
-    }
-    PK11_ExitContextMonitor(context);
-    return rv;
-}
-
-/*
- * execute a digest/signature operation
- */
-SECStatus
-PK11_DigestOp(PK11Context *context, const unsigned char * in, unsigned inLen) 
-{
-    CK_RV crv = CKR_OK;
-    SECStatus rv = SECSuccess;
-
-    if (!in) {
-        PORT_SetError(SEC_ERROR_INVALID_ARGS);
-        return SECFailure;
-    }
-
-    /* if we ran out of session, we need to restore our previously stored
-     * state.
-     */
-    context->init = PR_FALSE;
-    PK11_EnterContextMonitor(context);
-    if (!context->ownSession) {
-        rv = pk11_restoreContext(context,context->savedData,
-							context->savedLength);
-	if (rv != SECSuccess) {
-	    PK11_ExitContextMonitor(context);
-	    return rv;
-	}
-    }
-
-    switch (context->operation) {
-    /* also for MAC'ing */
-    case CKA_SIGN:
-	crv=PK11_GETTAB(context->slot)->C_SignUpdate(context->session,
-						     (unsigned char *)in, 
-						     inLen);
-	break;
-    case CKA_VERIFY:
-	crv=PK11_GETTAB(context->slot)->C_VerifyUpdate(context->session,
-						       (unsigned char *)in, 
-						       inLen);
-	break;
-    case CKA_DIGEST:
-	crv=PK11_GETTAB(context->slot)->C_DigestUpdate(context->session,
-						       (unsigned char *)in, 
-						       inLen);
-	break;
-    default:
-	crv = CKR_OPERATION_NOT_INITIALIZED;
-	break;
-    }
-
-    if (crv != CKR_OK) {
-        PORT_SetError( PK11_MapError(crv) );
-        rv = SECFailure;
-    }
-
-    /*
-     * handle session starvation case.. use our last session to multiplex
-     */
-    if (!context->ownSession) {
-	context->savedData = pk11_saveContext(context,context->savedData,
-				&context->savedLength);
-	if (context->savedData == NULL) rv = SECFailure;
-	
-	/* clear out out session for others to use */
-	pk11_Finalize(context);
-    }
-    PK11_ExitContextMonitor(context);
-    return rv;
-}
-
-/*
- * Digest a key if possible./
- */
-SECStatus
-PK11_DigestKey(PK11Context *context, PK11SymKey *key)
-{
-    CK_RV crv = CKR_OK;
-    SECStatus rv = SECSuccess;
-    PK11SymKey *newKey = NULL;
-
-    if (!context || !key) {
-        PORT_SetError(SEC_ERROR_INVALID_ARGS);
-        return SECFailure;
-    }
-
-    /* if we ran out of session, we need to restore our previously stored
-     * state.
-     */
-    if (context->slot != key->slot) {
-	newKey = pk11_CopyToSlot(context->slot,CKM_SSL3_SHA1_MAC,CKA_SIGN,key);
-    } else {
-	newKey = PK11_ReferenceSymKey(key);
-    }
-
-    context->init = PR_FALSE;
-    PK11_EnterContextMonitor(context);
-    if (!context->ownSession) {
-        rv = pk11_restoreContext(context,context->savedData,
-							context->savedLength);
-	if (rv != SECSuccess) {
-	    PK11_ExitContextMonitor(context);
-            PK11_FreeSymKey(newKey);
-	    return rv;
-	}
-    }
-
-
-    if (newKey == NULL) {
-	crv = CKR_KEY_TYPE_INCONSISTENT;
-	if (key->data.data) {
-	    crv=PK11_GETTAB(context->slot)->C_DigestUpdate(context->session,
-					key->data.data,key->data.len);
-	}
-    } else {
-	crv=PK11_GETTAB(context->slot)->C_DigestKey(context->session,
-							newKey->objectID);
-    }
-
-    if (crv != CKR_OK) {
-        PORT_SetError( PK11_MapError(crv) );
-        rv = SECFailure;
-    }
-
-    /*
-     * handle session starvation case.. use our last session to multiplex
-     */
-    if (!context->ownSession) {
-	context->savedData = pk11_saveContext(context,context->savedData,
-				&context->savedLength);
-	if (context->savedData == NULL) rv = SECFailure;
-	
-	/* clear out out session for others to use */
-	pk11_Finalize(context);
-    }
-    PK11_ExitContextMonitor(context);
-    if (newKey) PK11_FreeSymKey(newKey);
-    return rv;
-}
-
-/*
- * externally callable version of the lowercase pk11_finalize().
- */
-SECStatus
-PK11_Finalize(PK11Context *context) {
-    SECStatus rv;
-
-    PK11_EnterContextMonitor(context);
-    rv = pk11_Finalize(context);
-    PK11_ExitContextMonitor(context);
-    return rv;
-}
-
-/*
- * clean up a cipher operation, so the session can be used by
- * someone new.
- */
-SECStatus
-pk11_Finalize(PK11Context *context)
-{
-    CK_ULONG count = 0;
-    CK_RV crv;
-    unsigned char stackBuf[256];
-    unsigned char *buffer = NULL;
-
-    if (!context->ownSession) {
-	return SECSuccess;
-    }
-
-finalize:
-    switch (context->operation) {
-    case CKA_ENCRYPT:
-	crv=PK11_GETTAB(context->slot)->C_EncryptFinal(context->session,
-	                                               buffer, &count);
-	break;
-    case CKA_DECRYPT:
-	crv = PK11_GETTAB(context->slot)->C_DecryptFinal(context->session,
-	                                                 buffer, &count);
-	break;
-    case CKA_SIGN:
-	crv=PK11_GETTAB(context->slot)->C_SignFinal(context->session,
-	                                            buffer, &count);
-	break;
-    case CKA_VERIFY:
-	crv=PK11_GETTAB(context->slot)->C_VerifyFinal(context->session,
-	                                              buffer, count);
-	break;
-    case CKA_DIGEST:
-	crv=PK11_GETTAB(context->slot)->C_DigestFinal(context->session,
-	                                              buffer, &count);
-	break;
-    default:
-	crv = CKR_OPERATION_NOT_INITIALIZED;
-	break;
-    }
-
-    if (crv != CKR_OK) {
-	if (buffer != stackBuf) {
-	    PORT_Free(buffer);
-	}
-	if (crv == CKR_OPERATION_NOT_INITIALIZED) {
-	    /* if there's no operation, it is finalized */
-	    return SECSuccess;
-	}
-        PORT_SetError( PK11_MapError(crv) );
-        return SECFailure;
-    }
-
-    /* try to finalize the session with a buffer */
-    if (buffer == NULL) { 
-	if (count <= sizeof stackBuf) {
-	    buffer = stackBuf;
-	} else {
-	    buffer = PORT_Alloc(count);
-	    if (buffer == NULL) {
-		PORT_SetError(SEC_ERROR_NO_MEMORY);
-		return SECFailure;
-	    }
-	}
-	goto finalize;
-    }
-    if (buffer != stackBuf) {
-	PORT_Free(buffer);
-    }
-    return SECSuccess;
-}
-
-/*
- *  Return the final digested or signed data...
- *  this routine can either take pre initialized data, or allocate data
- *  either out of an arena or out of the standard heap.
- */
-SECStatus
-PK11_DigestFinal(PK11Context *context,unsigned char *data, 
-			unsigned int *outLen, unsigned int length)
-{
-    CK_ULONG len;
-    CK_RV crv;
-    SECStatus rv;
-
-
-    /* if we ran out of session, we need to restore our previously stored
-     * state.
-     */
-    PK11_EnterContextMonitor(context);
-    if (!context->ownSession) {
-        rv = pk11_restoreContext(context,context->savedData,
-							context->savedLength);
-	if (rv != SECSuccess) {
-	    PK11_ExitContextMonitor(context);
-	    return rv;
-	}
-    }
-
-    len = length;
-    switch (context->operation) {
-    case CKA_SIGN:
-	crv=PK11_GETTAB(context->slot)->C_SignFinal(context->session,
-				data,&len);
-	break;
-    case CKA_VERIFY:
-	crv=PK11_GETTAB(context->slot)->C_VerifyFinal(context->session,
-				data,len);
-	break;
-    case CKA_DIGEST:
-	crv=PK11_GETTAB(context->slot)->C_DigestFinal(context->session,
-				data,&len);
-	break;
-    case CKA_ENCRYPT:
-	crv=PK11_GETTAB(context->slot)->C_EncryptFinal(context->session,
-				data, &len);
-	break;
-    case CKA_DECRYPT:
-	crv = PK11_GETTAB(context->slot)->C_DecryptFinal(context->session,
-				data, &len);
-	break;
-    default:
-	crv = CKR_OPERATION_NOT_INITIALIZED;
-	break;
-    }
-    PK11_ExitContextMonitor(context);
-
-    *outLen = (unsigned int) len;
-    context->init = PR_FALSE; /* allow Begin to start up again */
-
-
-    if (crv != CKR_OK) {
-        PORT_SetError( PK11_MapError(crv) );
-	return SECFailure;
-    }
-    return SECSuccess;
-}
-