121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
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#ifndef MUPDF_FITZ_CRYPT_H
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#define MUPDF_FITZ_CRYPT_H
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#include "mupdf/fitz/system.h"
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/* md5 digests */
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typedef struct fz_md5_s fz_md5;
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/*
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Structure definition is public to enable stack
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based allocation. Do not access the members directly.
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*/
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struct fz_md5_s
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{
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unsigned int state[4];
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unsigned int count[2];
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unsigned char buffer[64];
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};
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void fz_md5_init(fz_md5 *state);
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void fz_md5_update(fz_md5 *state, const unsigned char *input, size_t inlen);
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void fz_md5_final(fz_md5 *state, unsigned char digest[16]);
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/* sha-256 digests */
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typedef struct fz_sha256_s fz_sha256;
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/*
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Structure definition is public to enable stack
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based allocation. Do not access the members directly.
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*/
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struct fz_sha256_s
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{
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unsigned int state[8];
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unsigned int count[2];
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union {
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unsigned char u8[64];
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unsigned int u32[16];
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} buffer;
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};
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void fz_sha256_init(fz_sha256 *state);
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void fz_sha256_update(fz_sha256 *state, const unsigned char *input, size_t inlen);
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void fz_sha256_final(fz_sha256 *state, unsigned char digest[32]);
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/* sha-512 digests */
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typedef struct fz_sha512_s fz_sha512;
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/*
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Structure definition is public to enable stack
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based allocation. Do not access the members directly.
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*/
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struct fz_sha512_s
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{
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uint64_t state[8];
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unsigned int count[2];
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union {
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unsigned char u8[128];
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uint64_t u64[16];
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} buffer;
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};
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void fz_sha512_init(fz_sha512 *state);
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void fz_sha512_update(fz_sha512 *state, const unsigned char *input, size_t inlen);
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void fz_sha512_final(fz_sha512 *state, unsigned char digest[64]);
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/* sha-384 digests */
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typedef struct fz_sha512_s fz_sha384;
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void fz_sha384_init(fz_sha384 *state);
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void fz_sha384_update(fz_sha384 *state, const unsigned char *input, size_t inlen);
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void fz_sha384_final(fz_sha384 *state, unsigned char digest[64]);
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/* arc4 crypto */
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typedef struct fz_arc4_s fz_arc4;
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/*
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Structure definition is public to enable stack
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based allocation. Do not access the members directly.
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*/
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struct fz_arc4_s
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{
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unsigned x;
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unsigned y;
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unsigned char state[256];
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};
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void fz_arc4_init(fz_arc4 *state, const unsigned char *key, size_t len);
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void fz_arc4_encrypt(fz_arc4 *state, unsigned char *dest, const unsigned char *src, size_t len);
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/* AES block cipher implementation from XYSSL */
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typedef struct fz_aes_s fz_aes;
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#define FZ_AES_DECRYPT 0
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#define FZ_AES_ENCRYPT 1
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/*
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Structure definition is public to enable stack
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based allocation. Do not access the members directly.
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*/
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struct fz_aes_s
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{
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int nr; /* number of rounds */
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unsigned long *rk; /* AES round keys */
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unsigned long buf[68]; /* unaligned data */
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};
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int fz_aes_setkey_enc( fz_aes *ctx, const unsigned char *key, int keysize );
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int fz_aes_setkey_dec( fz_aes *ctx, const unsigned char *key, int keysize );
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void fz_aes_crypt_cbc( fz_aes *ctx, int mode, size_t length,
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unsigned char iv[16],
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const unsigned char *input,
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unsigned char *output );
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#endif
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