totp.c File Reference

Common function for TOTP validation. More...

#include <freeradius-devel/util/sha1.h>
#include <freeradius-devel/util/debug.h>
#include "totp.h"

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Functions
int	fr_totp_cmp (fr_totp_t const *cfg, request_t *request, time_t now, uint8_t const *key, size_t keylen, char const *totp)
	Implement RFC 6238 TOTP algorithm (HMAC-SHA1).

Detailed Description

Common function for TOTP validation.

Id

ae5bde98857e9d72d6a9217452c9e9658b3359b0

Copyright

2023 The FreeRADIUS server project

Definition in file totp.c.

Function Documentation

fr_totp_cmp()

int fr_totp_cmp	(	fr_totp_t const *	cfg,
		request_t *	request,
		time_t	now,
		uint8_t const *	key,
		size_t	keylen,
		char const *	totp
	)

Implement RFC 6238 TOTP algorithm (HMAC-SHA1).

Appendix B has test vectors.  Note that the test vectors are
for 8-character challenges, and not for 6 character
challenges!

Parameters

[in]	cfg	Instance of fr_totp_t
[in]	request	The current request
[in]	now	The current time
[in]	key	Key to encrypt.
[in]	keylen	Length of key field.
[in]	totp	TOTP password entered by the user.

Returns

• 0 On Success
• -1 On Failure
• -2 On incorrect arguments

Definition at line 71 of file totp.c.

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