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/* This is DVIPDFMx, an eXtended version of DVIPDFM by Mark A. Wicks.
Copyright (C) 2003-2020 by Jin-Hwan Cho and Shunsaku Hirata,
the dvipdfmx project team.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _DPXCRYPT_H_
#define _DPXCRYPT_H_
#include <stdio.h>
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
/* libgcrypt md5 */
typedef struct {
uint32_t A, B, C, D; /* chaining variables */
size_t nblocks;
unsigned char buf[64];
int count;
} MD5_CONTEXT;
void MD5_init (MD5_CONTEXT *ctx);
void MD5_write(MD5_CONTEXT *ctx, const unsigned char *inbuf, unsigned int inlen);
void MD5_final(unsigned char *outbuf, MD5_CONTEXT *ctx);
typedef struct {
uint32_t h0,h1,h2,h3,h4,h5,h6,h7;
size_t nblocks;
unsigned char buf[64];
int count;
} SHA256_CONTEXT;
typedef struct
{
uint64_t h0, h1, h2, h3, h4, h5, h6, h7;
} SHA512_STATE;
typedef struct
{
SHA512_STATE state;
size_t nblocks;
unsigned char buf[128];
int count;
} SHA512_CONTEXT;
void SHA256_init (SHA256_CONTEXT *ctx);
void SHA256_write(SHA256_CONTEXT *ctx,
const unsigned char *inbuf, unsigned int inlen);
void SHA256_final(unsigned char *outbuf, SHA256_CONTEXT *ctx);
void SHA384_init (SHA512_CONTEXT *ctx);
#define SHA384_write(c,b,l) SHA512_write((c),(b),(l))
#define SHA384_final(b,c) SHA512_final((b),(c))
void SHA512_init (SHA512_CONTEXT *ctx);
void SHA512_write(SHA512_CONTEXT *ctx,
const unsigned char *inbuf, unsigned int inlen);
void SHA512_final(unsigned char *outbuf, SHA512_CONTEXT *ctx);
/* libgcrypt arcfour */
typedef struct {
int idx_i, idx_j;
unsigned char sbox[256];
} ARC4_CONTEXT;
#define AES_BLOCKSIZE 16
void ARC4 (ARC4_CONTEXT *ctx, unsigned int len, const unsigned char *inbuf, unsigned char *outbuf);
void ARC4_set_key (ARC4_CONTEXT *ctx, unsigned int keylen, const unsigned char *key);
void AES_ecb_encrypt (const unsigned char *key, size_t key_len,
const unsigned char *plain, size_t plain_len,
unsigned char **cipher, size_t *cipher_len);
void AES_cbc_encrypt (const unsigned char *key, size_t key_len,
const unsigned char *iv, int padding,
const unsigned char *plain, size_t plain_len,
unsigned char **cipher, size_t *cipher_len);
#endif /* _DPXCRYPT_H_ */
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