totp.h File Reference

#include <freeradius-devel/server/request.h>

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Data Structures
struct	fr_totp_t

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). More...

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Data Structure Documentation

fr_totp_t

struct fr_totp_t

Definition at line 33 of file totp.h.

Data Fields
uint32_t	lookback_interval	interval in seconds between steps
uint32_t	lookback_steps	number of steps to look back
uint32_t	otp_length	forced to 6 or 8
uint32_t	time_step	seconds

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 decrypt.
[in]	keylen	Length of key field.
[in]	totp	TOTP password entered by the user.

Returns

• 0 On Success
• -1 On Failure

Definition at line 70 of file totp.c.

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