md4.h File Reference

Structures and prototypes for our local MD4 implementation. More...

#include <freeradius-devel/build.h>
#include <freeradius-devel/missing.h>
#include <inttypes.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>

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Data Structures
struct	fr_md4_funcs_t

Macros
#define	fr_md4_ctx_alloc()   fr_md4_funcs->alloc()
	Allocation function for MD4 digest context.
#define	fr_md4_ctx_copy(_dst, _src)   fr_md4_funcs->copy(_dst, _src)
	Copy the contents of a ctx.
#define	fr_md4_ctx_free(_ctx)   fr_md4_funcs->free(_ctx)
	Free function for MD4 digest ctx.
#define	fr_md4_ctx_reset(_ctx)   fr_md4_funcs->reset(_ctx)
	Reset the ctx to allow reuse.
#define	fr_md4_final(_out, _ctx)   fr_md4_funcs->final(_out, _ctx)
	Finalise the ctx, producing the digest.
#define	fr_md4_update(_ctx, _in, _inlen)   fr_md4_funcs->update(_ctx, _in, _inlen)
	Ingest plaintext into the digest.
#define	MD4_DIGEST_LENGTH   16

Typedefs
typedef fr_md4_ctx_t *(*	fr_md4_ctx_alloc_t) (void)
typedef void(*	fr_md4_ctx_copy_t) (fr_md4_ctx_t *dst, fr_md4_ctx_t const *src)
typedef void(*	fr_md4_ctx_free_t) (fr_md4_ctx_t **ctx)
typedef void(*	fr_md4_ctx_reset_t) (fr_md4_ctx_t *ctx)
typedef void	fr_md4_ctx_t
typedef void(*	fr_md4_final_t) (uint8_t out[static MD4_DIGEST_LENGTH], fr_md4_ctx_t *ctx)
typedef void(*	fr_md4_update_t) (fr_md4_ctx_t *ctx, uint8_t const *in, size_t inlen)

Functions
void	fr_md4_calc (uint8_t out[static MD4_DIGEST_LENGTH], uint8_t const *in, size_t inlen)
	Perform a single digest operation on a single input buffer.
fr_md4_ctx_t *	fr_md4_ctx_alloc_from_list (void)
	Allocate an md4 context from a free list.
void	fr_md4_ctx_free_from_list (fr_md4_ctx_t **ctx)
	Release an md4 context back to a free list.

Variables
fr_md4_funcs_t const *	fr_md4_funcs
	Swap a single pointer, so all functions get swapped as an atomic operation.

Detailed Description

Structures and prototypes for our local MD4 implementation.

Note

license is LGPL, but largely derived from a public domain source.

Structures and declarations for md4.

Definition in file md4.h.

---

Data Structure Documentation

fr_md4_funcs_t

struct fr_md4_funcs_t

Definition at line 39 of file md4.h.

Data Fields
fr_md4_ctx_alloc_t	alloc
fr_md4_ctx_copy_t	copy
fr_md4_final_t	final
fr_md4_ctx_free_t	free
fr_md4_ctx_reset_t	reset
fr_md4_update_t	update

Macro Definition Documentation

fr_md4_ctx_alloc

#define fr_md4_ctx_alloc

(

)

fr_md4_funcs->alloc()

Allocation function for MD4 digest context.

Returns

• An MD4 ctx.
• NULL if out of memory.

Definition at line 71 of file md4.h.

fr_md4_ctx_copy

#define fr_md4_ctx_copy	(		_dst,
			_src
	)		fr_md4_funcs->copy(_dst, _src)

Copy the contents of a ctx.

Parameters

[in]	dst	Where to copy the context to.
[in]	src	Where to copy the context from.

Definition at line 63 of file md4.h.

fr_md4_ctx_free

#define fr_md4_ctx_free

(

_ctx

)

fr_md4_funcs->free(_ctx)

Free function for MD4 digest ctx.

Parameters

[in]

ctx

MD4 ctx to free. If the shared ctx is passed in then the ctx is reset but not freed.

Definition at line 78 of file md4.h.

fr_md4_ctx_reset

#define fr_md4_ctx_reset

(

_ctx

)

fr_md4_funcs->reset(_ctx)

Reset the ctx to allow reuse.

Parameters

[in]

ctx

To reuse.

Definition at line 56 of file md4.h.

fr_md4_final

#define fr_md4_final	(		_out,
			_ctx
	)		fr_md4_funcs->final(_out, _ctx)

Finalise the ctx, producing the digest.

Parameters

[out]	out	The MD4 digest.
[in]	ctx	To finalise.

Definition at line 93 of file md4.h.

fr_md4_update

#define fr_md4_update	(		_ctx,
			_in,
			_inlen
	)		fr_md4_funcs->update(_ctx, _in, _inlen)

Ingest plaintext into the digest.

Parameters

[in]	ctx	To ingest data into.
[in]	in	Data to ingest.
[in]	inlen	Length of data to ingest.

Definition at line 86 of file md4.h.

MD4_DIGEST_LENGTH

#define MD4_DIGEST_LENGTH   16

Definition at line 25 of file md4.h.

Typedef Documentation

fr_md4_ctx_alloc_t

typedef fr_md4_ctx_t *(* fr_md4_ctx_alloc_t) (void)

Definition at line 34 of file md4.h.

fr_md4_ctx_copy_t

typedef void(* fr_md4_ctx_copy_t) (fr_md4_ctx_t *dst, fr_md4_ctx_t const *src)

Definition at line 33 of file md4.h.

fr_md4_ctx_free_t

typedef void(* fr_md4_ctx_free_t) (fr_md4_ctx_t **ctx)

Definition at line 35 of file md4.h.

fr_md4_ctx_reset_t

typedef void(* fr_md4_ctx_reset_t) (fr_md4_ctx_t *ctx)

Definition at line 32 of file md4.h.

fr_md4_ctx_t

typedef void fr_md4_ctx_t

Definition at line 28 of file md4.h.

fr_md4_final_t

typedef void(* fr_md4_final_t) (uint8_t out[static MD4_DIGEST_LENGTH], fr_md4_ctx_t *ctx)

Definition at line 37 of file md4.h.

fr_md4_update_t

typedef void(* fr_md4_update_t) (fr_md4_ctx_t *ctx, uint8_t const *in, size_t inlen)

Definition at line 36 of file md4.h.

Function Documentation

fr_md4_calc()

void fr_md4_calc	(	uint8_t	out[static MD4_DIGEST_LENGTH],
		uint8_t const *	in,
		size_t	inlen
	)

Perform a single digest operation on a single input buffer.

Perform a single digest operation on a single input buffer.

Parameters

[out]	out	Where to write the MD4 digest. Must be a minimum of MD4_DIGEST_LENGTH.
[in]	in	Data to hash.
[in]	inlen	Length of the data.

Definition at line 515 of file md4.c.

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fr_md4_ctx_alloc_from_list()

fr_md4_ctx_t * fr_md4_ctx_alloc_from_list

(

void

)

Allocate an md4 context from a free list.

Allocate an md4 context from a free list.

Returns

• An MD4 ctx.
• NULL if out of memory.

Definition at line 541 of file md4.c.

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fr_md4_ctx_free_from_list()

void fr_md4_ctx_free_from_list

(

fr_md4_ctx_t **

ctx

)

Release an md4 context back to a free list.

Release an md4 context back to a free list.

Parameters

[in]

ctx

MD4 ctx to free. If the shared ctx is passed in then the ctx is reset but not freed.

Definition at line 586 of file md4.c.

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Variable Documentation

fr_md4_funcs

fr_md4_funcs_t const* fr_md4_funcs

extern

Swap a single pointer, so all functions get swapped as an atomic operation.

Definition at line 53 of file md4.c.