99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1994-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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#ifndef __obscure_h__
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#define __obscure_h__ 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned char SSMObscureBool;
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typedef struct SSMObscureObjectStr SSMObscureObject;
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/*
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** Create a new Obscuring object
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*/
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extern SSMObscureObject * SSMObscure_Create(SSMObscureBool IsServer);
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/* Prepare initial buffer with initial message to send to other side to
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** establish cryptographic * synchronization.
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**
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** If buf is NULL, function returns the size of the buffer that
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** the caller needs to allocate for sending the initial message.
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**
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** If buf is non-null, function returns the number of bytes of data filled
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** into buf, the amount that the caller should then send to the other side.
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**
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*/
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extern int SSMObscure_SendInit( SSMObscureObject * obj,
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void * buf);
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/*
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** Obscure "len" bytes in "buf" before sending it.
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*/
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extern int SSMObscure_Send( SSMObscureObject * obj,
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void * buf,
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unsigned int len);
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/*
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** UnObscure "len" bytes in "buf" after receiving it.
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** This function may absorb some or all of the received bytes, leaving
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** fewer bytes (possibly none) in the buffer for the application to use
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** than were in the buffer when the function was called.
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** Function returns the number of bytes of unobscured data remaining in
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** buf. Zero means all data was used internally and no data remains
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** for application use. Negative number means error occurred.
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*/
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extern int SSMObscure_Recv( SSMObscureObject * obj,
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void * buf,
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unsigned int len);
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/* like _Recv, but returns a flag telling when all initialization info has
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** been received.
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*/
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extern int SSMObscure_RecvInit( SSMObscureObject * obj,
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void * buf,
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unsigned int len,
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SSMObscureBool * done);
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/*
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** Destroy the Obscure Object
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*/
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extern int SSMObscure_Destroy(SSMObscureObject * obj);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __obscure_h__ */
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