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* sha1.h - SHA1 Secure Hash Algorithm used for CHAP authentication.
* copied from the Linux kernel's Cryptographic API and slightly adjusted to
* fit IET's needs
* This file is (c) 2004 Xiranet Communications GmbH <>
* and licensed under the GPL.
#ifndef SHA1_H
#define SHA1_H
#include <sys/types.h>
#include <string.h>
#include <inttypes.h>
struct sha1_ctx {
uint64_t count;
uint32_t state[5];
uint8_t buffer[64];
void sha1_init(void *ctx);
void sha1_update(void *ctx, const uint8_t *data, unsigned int len);
void sha1_final(void* ctx, uint8_t *out);
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