X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/sha512.h diff --git a/sha512.h b/sha512.h deleted file mode 100644 index f727e82..0000000 --- a/sha512.h +++ /dev/null @@ -1,173 +0,0 @@ -/* -*-c-*- - * - * $Id$ - * - * Implementation of the SHA-512 hash function - * - * (c) 2000 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. - */ - -/*----- Notes on the SHA-512 hash function --------------------------------* - * - * SHA-1 (Secure Hash Algorithm) was designed by the NSA, for use with the - * Digital Signature Algorithm. This is an evolution with a larger output - * size, intended to provide security commensurate with 256-bit AES. At the - * time of writing, SHA-512 is very new, and can't be trusted too far. There - * is also a truncated version, SHA-384, which provides security commensurate - * with 192-bit AES. - */ - -#ifndef CATACOMB_SHA512_H -#define CATACOMB_SHA512_H -#define CATACOMB_SHA384_H - -#ifdef __cplusplus - extern "C" { -#endif - -/*----- Header files ------------------------------------------------------*/ - -#include - -#ifndef CATACOMB_GHASH_H -# include "ghash.h" -#endif - -/*----- Magic numbers -----------------------------------------------------*/ - -#define SHA512_BUFSZ 128 -#define SHA512_HASHSZ 64 -#define SHA512_STATESZ 64 - -#define SHA384_BUFSZ 128 -#define SHA384_HASHSZ 48 -#define SHA384_STATESZ 64 - -/*----- Data structures ---------------------------------------------------*/ - -typedef struct sha512_ctx { - kludge64 a, b, c, d, e, f, g, h; /* Chaining variables */ - uint32 nh, nl; /* Byte count so far */ - unsigned off; /* Offset into buffer */ - octet buf[SHA512_BUFSZ]; /* Accumulation buffer */ -} sha512_ctx, sha384_ctx; - -/*----- Functions provided ------------------------------------------------*/ - -/* --- @sha512_compress@, @sha384_compress@ --- * - * - * Arguments: @sha512_ctx *ctx@ = pointer to context block - * @const void *sbuf@ = pointer to buffer of appropriate size - * - * Returns: --- - * - * Use: SHA-512 compression function. - */ - -extern void sha512_compress(sha512_ctx */*ctx*/, const void */*sbuf*/); -#define sha384_compress sha512_compress - -/* --- @sha512_init@, @sha384_init@ --- * - * - * Arguments: @sha512_ctx *ctx@ = pointer to context block to initialize - * - * Returns: --- - * - * Use: Initializes a context block ready for hashing. - */ - -extern void sha512_init(sha512_ctx */*ctx*/); -extern void sha384_init(sha512_ctx */*ctx*/); - -/* --- @sha512_set@, @sha384_set@ --- * - * - * Arguments: @sha512_ctx *ctx@ = pointer to context block - * @const void *buf@ = pointer to state buffer - * @unsigned long count@ = current count of bytes processed - * - * Returns: --- - * - * Use: Initializes a context block from a given state. This is - * useful in cases where the initial hash state is meant to be - * secret, e.g., for NMAC and HMAC support. - */ - -extern void sha512_set(sha512_ctx */*ctx*/, const void */*buf*/, - unsigned long /*count*/); -#define sha384_set sha512_set - -/* --- @sha512_hash@, @sha384_hash@ --- * - * - * Arguments: @sha512_ctx *ctx@ = pointer to context block - * @const void *buf@ = buffer of data to hash - * @size_t sz@ = size of buffer to hash - * - * Returns: --- - * - * Use: Hashes a buffer of data. The buffer may be of any size and - * alignment. - */ - -extern void sha512_hash(sha512_ctx */*ctx*/, - const void */*buf*/, size_t /*sz*/); -#define sha384_hash sha512_hash - -/* --- @sha512_done@, @sha384_done@ --- * - * - * Arguments: @sha512_ctx *ctx@ = pointer to context block - * @void *hash@ = pointer to output buffer - * - * Returns: --- - * - * Use: Returns the hash of the data read so far. - */ - -extern void sha512_done(sha512_ctx */*ctx*/, void */*hash*/); -extern void sha384_done(sha512_ctx */*ctx*/, void */*hash*/); - -/* --- @sha512_state@, @sha384_state@ --- * - * - * Arguments: @sha512_ctx *ctx@ = pointer to context - * @void *state@ = pointer to buffer for current state - * - * Returns: Number of bytes written to the hash function so far. - * - * Use: Returns the current state of the hash function such that - * it can be passed to @sha512_set@. - */ - -extern unsigned long sha512_state(sha512_ctx */*ctx*/, void */*state*/); -#define sha384_state sha512_state - -/*----- Generic hash interface --------------------------------------------*/ - -extern const gchash sha512; -extern const gchash sha384; - -/*----- That's all, folks -------------------------------------------------*/ - -#ifdef __cplusplus - } -#endif - -#endif