Security-55471.tar.gz

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

diff --git a/sec/Security/SecOTRSessionPriv.h b/sec/Security/SecOTRSessionPriv.h
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+++ b/sec/Security/SecOTRSessionPriv.h
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+//
+//  SecOTRSessionPriv.h
+//  libsecurity_libSecOTR
+//
+//  Created by Mitch Adler on 2/23/11.
+//  Copyright 2011 Apple Inc. All rights reserved.
+//
+
+#ifndef _SECOTRSESSIONPRIV_H_
+#define _SECOTRSESSIONPRIV_H_
+
+#include <CoreFoundation/CFBase.h>
+#include <CoreFoundation/CFRuntime.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>
+
+__BEGIN_DECLS
+
+typedef enum {
+    kIdle,
+    kAwaitingDHKey,
+    kAwaitingRevealSignature,
+    kAwaitingSignature,
+    kDone
+} SecOTRAuthState;
+
+struct _SecOTRCacheElement {
+    SecOTRFullDHKeyRef _fullKey;
+    uint8_t _fullKeyHash[CCSHA1_OUTPUT_SIZE];
+    SecOTRPublicDHKeyRef _publicKey;
+    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
+
+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;
+};
+
+void SecOTRGetIncomingBytes(CFDataRef incomingMessage, CFMutableDataRef decodedBytes);
+void SecOTRPrepareOutgoingBytes(CFMutableDataRef destinationMessage, CFMutableDataRef protectedMessage);
+
+__END_DECLS
+
+#endif