1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/nss/lib/freebl/ctr.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,51 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef CTR_H
1.9 +#define CTR_H 1
1.10 +
1.11 +#include "blapii.h"
1.12 +
1.13 +/* This structure is defined in this header because both ctr.c and gcm.c
1.14 + * need it. */
1.15 +struct CTRContextStr {
1.16 + freeblCipherFunc cipher;
1.17 + void *context;
1.18 + unsigned char counter[MAX_BLOCK_SIZE];
1.19 + unsigned char buffer[MAX_BLOCK_SIZE];
1.20 + unsigned long counterBits;
1.21 + unsigned int bufPtr;
1.22 +};
1.23 +
1.24 +typedef struct CTRContextStr CTRContext;
1.25 +
1.26 +SECStatus CTR_InitContext(CTRContext *ctr, void *context,
1.27 + freeblCipherFunc cipher, const unsigned char *param,
1.28 + unsigned int blocksize);
1.29 +
1.30 +/*
1.31 + * The context argument is the inner cipher context to use with cipher. The
1.32 + * CTRContext does not own context. context needs to remain valid for as long
1.33 + * as the CTRContext is valid.
1.34 + *
1.35 + * The cipher argument is a block cipher in the ECB encrypt mode.
1.36 + */
1.37 +CTRContext * CTR_CreateContext(void *context, freeblCipherFunc cipher,
1.38 + const unsigned char *param, unsigned int blocksize);
1.39 +
1.40 +void CTR_DestroyContext(CTRContext *ctr, PRBool freeit);
1.41 +
1.42 +SECStatus CTR_Update(CTRContext *ctr, unsigned char *outbuf,
1.43 + unsigned int *outlen, unsigned int maxout,
1.44 + const unsigned char *inbuf, unsigned int inlen,
1.45 + unsigned int blocksize);
1.46 +
1.47 +#ifdef USE_HW_AES
1.48 +SECStatus CTR_Update_HW_AES(CTRContext *ctr, unsigned char *outbuf,
1.49 + unsigned int *outlen, unsigned int maxout,
1.50 + const unsigned char *inbuf, unsigned int inlen,
1.51 + unsigned int blocksize);
1.52 +#endif
1.53 +
1.54 +#endif
