+++ /dev/null
-/* Copyright (c) 1998,2011,2014 Apple Inc. All Rights Reserved.
- *
- * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
- * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
- * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
- * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
- * INC. ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
- * EXPOSE YOU TO LIABILITY.
- ***************************************************************************
- *
- * feeCipherFile.c - general cipherfile support
- *
- * Revision History
- * ----------------
- * 05 Feb 97 at Apple
- * Added CFE_FEED and CFE_FEEDExp types.
- * 24 Oct 96 at NeXT
- * Created.
- */
-
-#include "feeCipherFile.h"
-#include "falloc.h"
-#include "feeFEEDExp.h"
-#include "feeFEED.h"
-#include "feeDebug.h"
-#include "CipherFileFEED.h"
-#include "CipherFileDES.h"
-
-
-/*
- * Create a cipherfile of specified cipherFileEncrType.
- */
-feeReturn createCipherFile(feePubKey sendPrivKey,
- feePubKey recvPubKey,
- cipherFileEncrType encrType,
- const unsigned char *plainText,
- unsigned plainTextLen,
- int genSig, // 1 ==> generate signature
- int doEnc64, // 1 ==> perform enc64
- unsigned userData, // for caller's convenience
- unsigned char **cipherFileData, // RETURNED
- unsigned *cipherFileDataLen) // RETURNED
-{
- feeReturn frtn = FR_Success;
- feeCipherFile cipherFile = NULL;
- unsigned char *cipherData = NULL;
- unsigned cipherDataLen;
-
- /*
- * Dispatch to encrType-specific code.
- */
- switch(encrType) {
- case CFE_RandDES:
- frtn = createRandDES(sendPrivKey,
- recvPubKey,
- plainText,
- plainTextLen,
- genSig,
- userData,
- &cipherFile);
- break;
- case CFE_PublicDES:
- frtn = createPubDES(sendPrivKey,
- recvPubKey,
- plainText,
- plainTextLen,
- genSig,
- userData,
- &cipherFile);
- break;
- case CFE_FEED:
- frtn = createFEED(sendPrivKey,
- recvPubKey,
- plainText,
- plainTextLen,
- genSig,
- userData,
- &cipherFile);
- break;
- case CFE_FEEDExp:
- frtn = createFEEDExp(sendPrivKey,
- recvPubKey,
- plainText,
- plainTextLen,
- genSig,
- userData,
- &cipherFile);
- break;
- default:
- frtn = FR_Unimplemented;
- break;
- }
-
- if(frtn) {
- goto out;
- }
-
- /*
- * Common logic for all encrTypes
- */
-
- /*
- * Get the cipherfile's raw data
- */
- frtn = feeCFileDataRepresentation(cipherFile,
- (const unsigned char **)&cipherData,
- &cipherDataLen);
- if(frtn) {
- goto out;
- }
-
- /*
- * Optionally encode in 64-char ASCII
- */
- if(doEnc64) {
- *cipherFileData = enc64(cipherData,
- cipherDataLen,
- cipherFileDataLen);
- ffree(cipherData);
- if(*cipherFileData == NULL) {
- frtn = FR_Internal;
- ffree(cipherData);
- goto out;
- }
- }
- else {
- *cipherFileData = cipherData;
- *cipherFileDataLen = cipherDataLen;
- }
-out:
- /* free stuff */
- if(cipherFile) {
- feeCFileFree(cipherFile);
- }
- return frtn;
-}
-
-/*
- * Parse a cipherfile.
- *
- * sendPubKey only needed for cipherFileEncrType CFE_RandDES if signature
- * is present. If sendPubKey is present, it will be used for signature
- * validation rather than the embedded sender's public key.
- */
-feeReturn parseCipherFile(feePubKey recvPrivKey,
- feePubKey sendPubKey,
- const unsigned char *cipherFileData,
- unsigned cipherFileDataLen,
- int doDec64, // 1 ==> perform dec64
- cipherFileEncrType *encrType, // RETURNED
- unsigned char **plainText, // RETURNED
- unsigned *plainTextLen, // RETURNED
- feeSigStatus *sigStatus, // RETURNED
- unsigned *userData) // RETURNED
-{
- feeReturn frtn;
- unsigned char *cipherData = NULL;
- unsigned cipherDataLen;
- int freeCipherData = 0;
- feeCipherFile cipherFile = NULL;
-
- *plainText = NULL;
- *plainTextLen = 0;
-
- if(recvPrivKey == NULL) { // always required
- frtn = FR_BadPubKey;
- goto out;
- }
-
- /*
- * First, optional dec64()
- */
- if(doDec64) {
- cipherData = dec64(cipherFileData,
- cipherFileDataLen,
- &cipherDataLen);
- if(cipherData == NULL) {
- frtn = FR_BadEnc64;
- goto out;
- }
- else {
- freeCipherData = 1;
- }
- }
- else {
- cipherData = (unsigned char *)cipherFileData;
- cipherDataLen = cipherFileDataLen;
- }
-
- /*
- * Cons up a feeCipherFile object.
- */
- frtn = feeCFileNewFromDataRep(cipherData,
- cipherDataLen,
- &cipherFile);
- if(frtn) {
- goto out;
- }
- *encrType = feeCFileEncrType(cipherFile);
- *userData = feeCFileUserData(cipherFile);
- frtn = decryptCipherFile(cipherFile,
- recvPrivKey,
- sendPubKey,
- plainText,
- plainTextLen,
- sigStatus);
-
-out:
- /* free stuff */
-
- if(cipherData && freeCipherData) {
- ffree(cipherData);
- }
- if(cipherFile) {
- feeCFileFree(cipherFile);
- }
- return frtn;
-}
-
-/*
- * Decrypt a feeCipherFile obtained via feeCFileNewFromDataRep().
- * recvPrivKey is required in all cases. If sendPubKey is present,
- * sendPubKey - rather than the embedded sender's public key - will be
- * used for signature validation.
- */
-feeReturn decryptCipherFile(feeCipherFile cipherFile,
- feePubKey recvPrivKey, // required
- feePubKey sendPubKey, // optional, for signature
- unsigned char **plainText, // malloc'd & RETURNED
- unsigned *plainTextLen, // RETURNED
- feeSigStatus *sigStatus) // RETURNED
-{
- cipherFileEncrType encrType = feeCFileEncrType(cipherFile);
- feeReturn frtn;
-
- *plainText = NULL;
- *plainTextLen = 0;
-
- /*
- * Dispatch to encrType-specific code.
- */
- switch(encrType) {
- case CFE_RandDES:
- frtn = decryptRandDES(cipherFile,
- recvPrivKey,
- sendPubKey,
- plainText,
- plainTextLen,
- sigStatus);
- break;
- case CFE_PublicDES:
- frtn = decryptPubDES(cipherFile,
- recvPrivKey,
- sendPubKey,
- plainText,
- plainTextLen,
- sigStatus);
- break;
- case CFE_FEED:
- frtn = decryptFEED(cipherFile,
- recvPrivKey,
- sendPubKey,
- plainText,
- plainTextLen,
- sigStatus);
- break;
- case CFE_FEEDExp:
- frtn = decryptFEEDExp(cipherFile,
- recvPrivKey,
- sendPubKey,
- plainText,
- plainTextLen,
- sigStatus);
- break;
- default:
- frtn = FR_Unimplemented;
- break;
- }
- return frtn;
-}
projects / apple / security.git / blobdiff