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52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef CTR_H
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#define CTR_H 1
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#include "blapii.h"
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/* This structure is defined in this header because both ctr.c and gcm.c
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* need it. */
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struct CTRContextStr {
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freeblCipherFunc cipher;
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void *context;
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unsigned char counter[MAX_BLOCK_SIZE];
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unsigned char buffer[MAX_BLOCK_SIZE];
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unsigned long counterBits;
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unsigned int bufPtr;
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};
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typedef struct CTRContextStr CTRContext;
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SECStatus CTR_InitContext(CTRContext *ctr, void *context,
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freeblCipherFunc cipher, const unsigned char *param,
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unsigned int blocksize);
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/*
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* The context argument is the inner cipher context to use with cipher. The
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* CTRContext does not own context. context needs to remain valid for as long
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* as the CTRContext is valid.
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*
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* The cipher argument is a block cipher in the ECB encrypt mode.
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*/
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CTRContext * CTR_CreateContext(void *context, freeblCipherFunc cipher,
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const unsigned char *param, unsigned int blocksize);
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void CTR_DestroyContext(CTRContext *ctr, PRBool freeit);
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SECStatus CTR_Update(CTRContext *ctr, unsigned char *outbuf,
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unsigned int *outlen, unsigned int maxout,
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const unsigned char *inbuf, unsigned int inlen,
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unsigned int blocksize);
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#ifdef USE_HW_AES
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SECStatus CTR_Update_HW_AES(CTRContext *ctr, unsigned char *outbuf,
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unsigned int *outlen, unsigned int maxout,
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const unsigned char *inbuf, unsigned int inlen,
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unsigned int blocksize);
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#endif
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#endif
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