+++ /dev/null
-/* -*-c-*-
- *
- * $Id: tlsprf.h,v 1.2 2004/04/08 01:36:15 mdw Exp $
- *
- * The TLS pseudo-random function
- *
- * (c) 2001 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of Catacomb.
- *
- * Catacomb is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * Catacomb is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with Catacomb; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-#ifndef CATACOMB_TLSPRF_H
-#define CATACOMB_TLSPRF_H
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#ifndef CATACOMB_GMAC_H
-# include "gmac.h"
-#endif
-
-#ifndef CATACOMB_GRAND_H
-# include "grand.h"
-#endif
-
-/*----- Data structures ---------------------------------------------------*/
-
-typedef struct tlsdx_ctx {
- gmac *k; /* The MAC key to use */
- size_t hashsz; /* Size of hash outputs */
- ghash *i, *o; /* Inner and outer hash contexts */
- const octet *sd; /* Pointer to seed buffer */
- size_t sdsz; /* Size of the seed buffer */
- octet *p; /* Pointer to buffered output */
- size_t sz; /* Bytes remaining in buffer */
- octet *ai; /* Pointer to inner result */
-} tlsdx_ctx;
-
-typedef struct tlsprf_ctx {
- tlsdx_ctx px, py;
-} tlsprf_ctx;
-
-/*----- The data expansion function ---------------------------------------*/
-
-/* --- @tlsdx_init@ --- *
- *
- * Arguments: @tlsdx_ctx *c@ = pointer to a context
- * @gmac *m@ = pointer to a generic MAC instance
- * @const void *sd@ = pointer to the seed block
- * @size_t sdsz@ = size of the seed block
- *
- * Returns: ---
- *
- * Use: Initializes a context for the TLS data expansion function.
- * This doesn't take ownership of the MAC instance or the seed
- * memory, nor does it allocate copies.
- */
-
-extern void tlsdx_init(tlsdx_ctx */*c*/, gmac */*m*/,
- const void */*sd*/, size_t /*sdsz*/);
-
-/* --- @tlsdx_encrypt@ --- *
- *
- * Arguments: @tlsdx_ctx *c@ = pointer to a context
- * @const void *src@ = pointer to source data
- * @void *dest@ = pointer to destination buffer
- * @size_t sz@ = size of buffer
- *
- * Returns: ---
- *
- * Use: Encrypts data using the TLS data expansion function. If the
- * destination pointer is null, the generator is spun and no
- * output is produced; if the source pointer is null, raw output
- * from the generator is written; otherwise, the source data is
- * XORed with the generator output.
- */
-
-extern void tlsdx_encrypt(tlsdx_ctx */*c*/, const void */*src*/,
- void */*dest*/, size_t /*sz*/);
-
-/* --- @tlsdx_free@ --- *
- *
- * Arguments: @tlsdx_ctx *c@ = pointer to the context block
- *
- * Returns: ---
- *
- * Use: Frees a context for the TLS data expansion function
- */
-
-extern void tlsdx_free(tlsdx_ctx */*c*/);
-
-/* ---@tlsdx_rand@ --- *
- *
- * Arguments: @const gcmac *mc@ = MAC function to use
- * @const void *k@ = pointer to the key material
- * @size_t ksz@ = size of the key material
- * @const void *sd@ = pointer to the seed material
- * @size_t sdsz@ = size of the seed material
- *
- * Returns: Pointer to generic random number generator interface.
- *
- * Use: Creates a generic generator which does TLS data expansion.
- */
-
-extern grand *tlsdx_rand(const gcmac */*mc*/,
- const void */*k*/, size_t /*ksz*/,
- const void */*sd*/, size_t /*sdsz*/);
-
-/* --- The actual very paranoid PRF ---------------------------------------*/
-
-/* --- @tlsprf_init@ --- *
- *
- * Arguments: @tlsprf_ctx *c@ = pointer to context block
- * @const gcmac *mcx, *mcy@ = left and right MAC functions
- * @const void *k@ = pointer to the key material
- * @size_t ksz@ = size of the key material
- * @const void *sd@ = pointer to the seed material
- * @size_t sdsz@ = size of the seed material
- *
- * Returns: ---
- *
- * Use: Initializes a TLS PRF context.
- */
-
-extern void tlsprf_init(tlsprf_ctx */*c*/,
- const gcmac */*mcx*/, const gcmac */*mcy*/,
- const void */*k*/, size_t /*ksz*/,
- const void */*sd*/, size_t /*sdsz*/);
-
-/* --- @tlsprf_encrypt@ --- *
- *
- * Arguments: @tlsprf_ctx *c@ = pointer to a context
- * @const void *src@ = pointer to source data
- * @void *dest@ = pointer to destination buffer
- * @size_t sz@ = size of buffer
- *
- * Returns: ---
- *
- * Use: Encrypts data using the TLS pseudo-random function. If the
- * destination pointer is null, the generator is spun and no
- * output is produced; if the source pointer is null, raw output
- * from the generator is written; otherwise, the source data is
- * XORed with the generator output.
- */
-
-extern void tlsprf_encrypt(tlsprf_ctx */*c*/,
- const void */*src*/, void */*dest*/,
- size_t /*sz*/);
-
-/* --- @tlsprf_free@ --- *
- *
- * Arguments: @tlsprf_ctx *c@ = pointer to a context
- *
- * Returns: ---
- *
- * Use: Frees a TLS PRF context.
- */
-
-extern void tlsprf_free(tlsprf_ctx */*c*/);
-
-/* ---@tlsprf_rand@ --- *
- *
- * Arguments: @const gcmac *mcx, *mcy@ = MAC function to use
- * @const void *k@ = pointer to the key material
- * @size_t ksz@ = size of the key material
- * @const void *sd@ = pointer to the seed material
- * @size_t sdsz@ = size of the seed material
- *
- * Returns: Pointer to generic random number generator interface.
- *
- * Use: Creates a generic generator which does TLS data expansion.
- */
-
-extern grand *tlsprf_rand(const gcmac */*mcx*/, const gcmac */*mcy*/,
- const void */*k*/, size_t /*ksz*/,
- const void */*sd*/, size_t /*sdsz*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
- }
-#endif
-
-#endif
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