52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#ifndef _GPXE_CHAP_H
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#define _GPXE_CHAP_H
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/** @file
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*
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* CHAP protocol
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*
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*/
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#include <stdint.h>
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#include <gpxe/md5.h>
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struct crypto_algorithm;
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/** A CHAP response */
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struct chap_response {
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/** Digest algorithm used for the response */
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struct crypto_algorithm *digest;
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/** Context used by the digest algorithm */
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uint8_t *digest_context;
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/** CHAP response */
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uint8_t *response;
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/** Length of CHAP response */
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size_t response_len;
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};
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extern int chap_init ( struct chap_response *chap,
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struct crypto_algorithm *digest );
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extern void chap_update ( struct chap_response *chap, const void *data,
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size_t len );
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extern void chap_respond ( struct chap_response *chap );
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extern void chap_finish ( struct chap_response *chap );
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/**
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* Add identifier data to the CHAP challenge
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*
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* @v chap CHAP response
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* @v identifier CHAP identifier
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*
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* The CHAP identifier is the first byte of the CHAP challenge. This
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* function is a notational convenience for calling chap_update() for
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* the identifier byte.
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*/
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static inline void chap_set_identifier ( struct chap_response *chap,
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unsigned int identifier ) {
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uint8_t ident_byte = identifier;
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chap_update ( chap, &ident_byte, sizeof ( ident_byte ) );
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}
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#endif /* _GPXE_CHAP_H */
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