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#ifndef CSUM_FILE_H
#define CSUM_FILE_H
/* A SHA1-protected file */
struct sha1file {
int fd, error;
unsigned long offset;
SHA_CTX ctx;
unsigned char buffer[8192];
};
extern struct sha1file *sha1create(const char *fmt, ...);
extern int sha1close(struct sha1file *);
extern int sha1write(struct sha1file *, void *, unsigned int);
extern int sha1write_compressed(struct sha1file *, void *, unsigned int);
#endif
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