-/* 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.
- ***************************************************************************
- *
- * NSCipherFile.m - ObjC wrapper for feeCipherFile
- *
- * Revision History
- * ----------------
- * 28 Oct 96 at NeXT
- * Created.
- */
-
-#import "NSCipherFile.h"
-#import "feeCipherFile.h"
-#import "falloc.h"
-#import "NSFEEPublicKeyPrivate.h" /* for -feePubKey */
-
-/*
- * Private instance data.
- */
-typedef struct {
- feeCipherFile cfile;
-} _cfPriv;
-
-@implementation NSCipherFile
-
-- (void)dealloc
-{
- if(_priv) {
- _cfPriv *cfPriv = _priv;
- if(cfPriv->cfile) {
- feeCFileFree(cfPriv->cfile);
- }
- }
- [super dealloc];
-}
-
-/*
- * Alloc and return an autoreleased NSCipherFile object associated with
- * the specified data.
- */
-+ newFromCipherText : (NSData *)cipherText
- encrType : (cipherFileEncrType)encrType
- sendPubKeyData : (NSData *)sendPubKeyData
- otherKeyData : (NSData *)otherKeyData
- sigData : (NSData *)sigData // optional; nil means no signature
- userData : (unsigned)userData // for caller's convenience
-{
- NSCipherFile *result;
- _cfPriv *cfPriv;
-
- result = [[self alloc] autorelease];
- result->_priv = cfPriv = fmalloc(sizeof(_cfPriv));
- cfPriv->cfile = feeCFileNewFromCipherText(encrType,
- [cipherText bytes],
- [cipherText length],
- [sendPubKeyData bytes],
- [sendPubKeyData length],
- [otherKeyData bytes],
- [otherKeyData length],
- [sigData bytes],
- [sigData length],
- userData);
- if(cfPriv->cfile) {
- return result;
- }
- else {
- return nil;
- }
-}
-
-/*
- * Obtain the contents of a feeCipherFile as NSData.
- */
-- (NSData *)dataRepresentation
-{
- _cfPriv *cfPriv = _priv;
- NSData *result;
- const unsigned char *rep;
- unsigned repLen;
- feeReturn frtn;
-
- if(cfPriv == NULL) {
- return nil;
- }
- frtn = feeCFileDataRepresentation(cfPriv->cfile,
- &rep,
- &repLen);
- if(frtn) {
- return nil;
- }
- result = [NSData dataWithBytesNoCopy:(unsigned char *)rep
- length:repLen];
- return result;
-}
-
-/*
- * Alloc and return an autoreleased NSCipherFile object given a data
- * representation.
- */
-+ newFromDataRepresentation : (NSData *)dataRep
-{
- NSCipherFile *result;
- _cfPriv *cfPriv;
- feeReturn frtn;
-
- result = [[self alloc] autorelease];
- result->_priv = cfPriv = fmalloc(sizeof(_cfPriv));
- frtn = feeCFileNewFromDataRep([dataRep bytes],
- [dataRep length],
- &cfPriv->cfile);
- if(frtn) {
- return nil;
- }
- else {
- return result;
- }
-}
-
-/*
- * Given an NSCipherFile object, obtain its constituent parts.
- */
-- (cipherFileEncrType)encryptionType
-{
- _cfPriv *cfPriv = _priv;
-
- if(cfPriv == NULL) {
- return CFE_Other;
- }
- return feeCFileEncrType(cfPriv->cfile);
-}
-
-- (NSData *)cipherText
-{
- _cfPriv *cfPriv = _priv;
- const unsigned char *ctext;
- unsigned ctextLen;
-
- if(cfPriv == NULL) {
- return nil;
- }
- ctext = feeCFileCipherText(cfPriv->cfile, &ctextLen);
- return [NSData dataWithBytesNoCopy:(unsigned char *)ctext
- length:ctextLen];
-}
-
-- (NSData *)sendPubKeyData
-{
- _cfPriv *cfPriv = _priv;
- const unsigned char *key;
- unsigned keyLen;
-
- if(cfPriv == NULL) {
- return nil;
- }
- key = feeCFileSendPubKeyData(cfPriv->cfile, &keyLen);
- if(key) {
- return [NSData dataWithBytesNoCopy:(unsigned char *)key
- length:keyLen];
- }
- else {
- return nil;
- }
-}
-
-- (NSData *)otherKeyData
-{
- _cfPriv *cfPriv = _priv;
- const unsigned char *key;
- unsigned keyLen;
-
- if(cfPriv == NULL) {
- return nil;
- }
- key = feeCFileOtherKeyData(cfPriv->cfile, &keyLen);
- if(key) {
- return [NSData dataWithBytesNoCopy:(unsigned char *)key
- length:keyLen];
- }
- else {
- return nil;
- }
-}
-
-- (NSData *)sigData
-{
- _cfPriv *cfPriv = _priv;
- const unsigned char *sig;
- unsigned sigLen;
-
- if(cfPriv == NULL) {
- return nil;
- }
- sig = feeCFileSigData(cfPriv->cfile, &sigLen);
- if(sig) {
- return [NSData dataWithBytesNoCopy:(unsigned char *)sig
- length:sigLen];
- }
- else {
- return nil;
- }
-}
-
-- (unsigned)userData
-{
- _cfPriv *cfPriv = _priv;
-
- if(cfPriv == NULL) {
- return 0;
- }
- return feeCFileUserData(cfPriv->cfile);
-}
-
-/*
- * High-level cipherFile support.
- */
-
-/*
- * Create a cipherfile of specified cipherFileEncrType for given plaintext.
- */
-+(feeReturn)createCipherFileForPrivKey : (NSFEEPublicKey *)sendPrivKey
- recvPubKey : (NSFEEPublicKey *)recvPubKey
- encrType : (cipherFileEncrType)encrType
- plainText : (NSData *)plainText
- genSig : (BOOL)genSig
- doEnc64 : (BOOL)doEnc64 // YES ==> perform enc64
- userData : (unsigned)userData // for caller's convenience
- cipherFileData : (NSData **)cipherFileData // RETURNED
-{
- feeReturn frtn;
- unsigned char *cfileData;
- unsigned cfileDataLen;
- feePubKey privKey = NULL;
-
- if(sendPrivKey) {
- privKey = [sendPrivKey feePubKey];
- }
- frtn = createCipherFile(privKey,
- [recvPubKey feePubKey],
- encrType,
- [plainText bytes],
- [plainText length],
- genSig,
- doEnc64,
- userData,
- &cfileData,
- &cfileDataLen);
- if(frtn) {
- return frtn;
- }
- *cipherFileData =
- [NSData dataWithBytesNoCopy:(unsigned char *)cfileData
- length:cfileDataLen];
- return frtn;
-}
-
-/*
- * Parse and decrypt a data representation of an NSCipherFile object.
- */
-+ (feeReturn)parseCipherFileData : (NSFEEPublicKey *)recvPrivKey
- sendPubKey : (NSFEEPublicKey *)sendPubKey
- cipherFileData : (NSData *)cipherFileData
- doDec64 : (BOOL)doDec64
- encrType : (cipherFileEncrType *)encrType // RETURNED
- plainText : (NSData **)plainText // RETURNED
- sigStatus : (feeSigStatus *)sigStatus // RETURNED
- sigSigner : (NSString **)sigSigner // RETURNED
- userData : (unsigned *)userData // RETURNED
-{
- feeReturn frtn;
- unsigned char *ptext;
- unsigned ptextLen;
- feeUnichar *signer;
- unsigned signerLen;
- feePubKey _pubKey = NULL;
-
- if(recvPrivKey == nil) {
- return FR_IllegalArg; // always required
- }
- if(sendPubKey) {
- _pubKey = [sendPubKey feePubKey];
- }
-
- frtn = parseCipherFile([recvPrivKey feePubKey],
- _pubKey,
- [cipherFileData bytes],
- [cipherFileData length],
- doDec64,
- encrType,
- &ptext,
- &ptextLen,
- sigStatus,
- &signer,
- &signerLen,
- userData);
- if(frtn) {
- return frtn;
- }
- *plainText = [NSData dataWithBytesNoCopy:ptext length:ptextLen];
- *sigSigner = [NSString stringWithCharacters:signer length:signerLen];
- ffree(signer);
- return frtn;
-}
-
-/*
- * Parse and decrypt an NSCipherFile object obtained via
- * +newFromDataRepresentation.
- *
- * 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)decryptCipherFileData : (NSFEEPublicKey *)recvPrivKey
- sendPubKey : (NSFEEPublicKey *)sendPubKey
- plainText : (NSData **)plainText // RETURNED
- sigStatus : (feeSigStatus *)sigStatus // RETURNED
- sigSigner : (NSString **)sigSigner // RETURNED
-{
- _cfPriv *cfPriv = _priv;
- feeReturn frtn;
- unsigned char *ptext;
- unsigned ptextLen;
- feeUnichar *signer;
- unsigned signerLen;
- feePubKey _pubKey = NULL;
-
- if(cfPriv == NULL) {
- return FR_IllegalArg;
- }
- if(recvPrivKey == nil) {
- return FR_IllegalArg; // always required
- }
- if(sendPubKey) {
- _pubKey = [sendPubKey feePubKey];
- }
-
- frtn = decryptCipherFile(cfPriv->cfile,
- [recvPrivKey feePubKey],
- _pubKey,
- &ptext,
- &ptextLen,
- sigStatus,
- &signer,
- &signerLen);
- if(frtn) {
- return frtn;
- }
- *plainText = [NSData dataWithBytesNoCopy:ptext length:ptextLen];
- *sigSigner = [NSString stringWithCharacters:signer length:signerLen];
- ffree(signer);
- return frtn;
-
-}
-@end
projects / apple / security.git / blobdiff