Security-57336.1.9.tar.gz

[apple/security.git] / OSX / sec / Security / SecOTRSessionPriv.h

diff --git a/OSX/sec/Security/SecOTRSessionPriv.h b/OSX/sec/Security/SecOTRSessionPriv.h
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+/*
+ * Copyright (c) 2011-2014 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+#ifndef _SECOTRSESSIONPRIV_H_
+#define _SECOTRSESSIONPRIV_H_
+
+#include <CoreFoundation/CFBase.h>
+#include <CoreFoundation/CFRuntime.h>
+#include <CoreFoundation/CFDate.h>
+
+#include <Security/SecOTR.h>
+#include <corecrypto/ccn.h>
+#include <corecrypto/ccmode.h>
+#include <corecrypto/ccsha1.h>
+
+#include <CommonCrypto/CommonDigest.h>
+
+#include <dispatch/dispatch.h>
+
+#include <Security/SecOTRMath.h>
+#include <Security/SecOTRDHKey.h>
+#include <Security/SecOTRSession.h>
+
+__BEGIN_DECLS
+
+typedef enum {
+    kIdle,
+    kAwaitingDHKey,
+    kAwaitingRevealSignature,
+    kAwaitingSignature,
+    kDone
+} SecOTRAuthState;
+
+struct _SecOTRCacheElement {
+    uint8_t _fullKeyHash[CCSHA1_OUTPUT_SIZE];
+    uint8_t _publicKeyHash[CCSHA1_OUTPUT_SIZE];
+
+    uint8_t _sendMacKey[kOTRMessageMacKeyBytes];
+    uint8_t _sendEncryptionKey[kOTRMessageKeyBytes];
+
+    uint8_t _receiveMacKey[kOTRMessageMacKeyBytes];
+    uint8_t _receiveEncryptionKey[kOTRMessageKeyBytes];
+
+    uint64_t _counter;
+    uint64_t _theirCounter;
+    
+};
+typedef struct _SecOTRCacheElement SecOTRCacheElement;
+
+#define kOTRKeyCacheSize 4
+#define kSecondsPerMinute 60
+
+struct _SecOTRSession {
+    CFRuntimeBase _base;
+    
+    SecOTRAuthState _state;
+    
+    SecOTRFullIdentityRef    _me;
+    SecOTRPublicIdentityRef  _them;
+    
+    uint8_t _r[kOTRAuthKeyBytes];
+    
+    CFDataRef _receivedDHMessage;
+    CFDataRef _receivedDHKeyMessage;
+
+    uint32_t _keyID;
+    SecOTRFullDHKeyRef _myKey;
+    SecOTRFullDHKeyRef _myNextKey;
+
+    uint32_t _theirKeyID;
+    SecOTRPublicDHKeyRef _theirPreviousKey;
+    SecOTRPublicDHKeyRef _theirKey;
+    
+    CFMutableDataRef _macKeysToExpose;
+
+    dispatch_queue_t _queue;
+
+    SecOTRCacheElement _keyCache[kOTRKeyCacheSize];
+    
+    bool _textOutput;
+    bool _compactAppleMessages;
+    bool _includeHashes;
+    uint64_t _stallSeconds;
+
+    bool _stallingTheirRoll;
+    CFAbsoluteTime _timeToRoll;
+    
+    bool _missedAck;
+    bool _receivedAck;
+};
+
+CFDataRef SecOTRCopyIncomingBytes(CFDataRef incomingMessage);
+void SecOTRPrepareOutgoingBytes(CFMutableDataRef destinationMessage, CFMutableDataRef protectedMessage);
+
+OSStatus SecOTRSetupInitialRemoteKey(SecOTRSessionRef session, SecOTRPublicDHKeyRef initialKey);
+void SOSOTRSRoll(SecOTRSessionRef session);
+int SecOTRSGetKeyID(SecOTRSessionRef session);
+int SecOTRSGetTheirKeyID(SecOTRSessionRef session);
+void SecOTRSKickTimeToRoll(SecOTRSessionRef session);
+
+__END_DECLS
+
+#endif