md.cpp File Reference

MD4 / MD5 / HMAC-MD5 implementation (see md.h). Little-endian word order. More...

#include "crypto/hash/md.h"
#include "crypto/crypto_opt.h"
#include "server/mmgr/secure.h"
#include "shared_primitives/endian.h"
#include <string.h>

Go to the source code of this file.

Classes
struct	MdCtx

Macros
#define	F4(X, Y, Z)   (((X) & (Y)) | (~(X) & (Z)))
#define	G4(X, Y, Z)   (((X) & (Y)) | ((X) & (Z)) | ((Y) & (Z)))
#define	H4(X, Y, Z)   ((X) ^ (Y) ^ (Z))
#define	R1(A, B, C, D, K, S)   A = rotl((uint32_t)(A + F4(B, C, D) + x[K]), S)
#define	R2(A, B, C, D, K, S)   A = rotl((uint32_t)(A + G4(B, C, D) + x[K] + 0x5a827999u), S)
#define	R3(A, B, C, D, K, S)   A = rotl((uint32_t)(A + H4(B, C, D) + x[K] + 0x6ed9eba1u), S)

Typedefs
using	md_compress_fn = void(*)(uint32_t[4], const uint8_t[64])

Functions
MdCtx *	pc_md_wants (void)
	Storage this module wants for one MD4/MD5 context.
void	pc_md5_init (MdCtx *c)
void	pc_md4_init (MdCtx *c)
void	pc_md5_update (MdCtx *c, const uint8_t *data, size_t len)
void	pc_md5_final (MdCtx *c, uint8_t out[16])
void	pc_md4_update (MdCtx *c, const uint8_t *data, size_t len)
void	pc_md4_final (MdCtx *c, uint8_t out[16])
void	md5 (const uint8_t *data, size_t len, uint8_t out[16])
	One-shot MD5.
void	md4 (const uint8_t *data, size_t len, uint8_t out[16])
	One-shot MD4 (the NT-hash primitive).
void	pc_hmac_md5 (const uint8_t *key, size_t key_len, const uint8_t *msg, size_t msg_len, uint8_t out[16])
	HMAC-MD5 (RFC 2104): the NTLMv2 MAC primitive.

Detailed Description

MD4 / MD5 / HMAC-MD5 implementation (see md.h). Little-endian word order.

Definition in file md.cpp.

Macro Definition Documentation

F4

#define F4	(		X,
			Y,
			Z
	)		(((X) & (Y)) | (~(X) & (Z)))

G4

#define G4	(		X,
			Y,
			Z
	)		(((X) & (Y)) | ((X) & (Z)) | ((Y) & (Z)))

H4

#define H4	(		X,
			Y,
			Z
	)		((X) ^ (Y) ^ (Z))

R1

#define R1	(		A,
			B,
			C,
			D,
			K,
			S
	)		A = rotl((uint32_t)(A + F4(B, C, D) + x[K]), S)

R2

#define R2	(		A,
			B,
			C,
			D,
			K,
			S
	)		A = rotl((uint32_t)(A + G4(B, C, D) + x[K] + 0x5a827999u), S)

R3

#define R3	(		A,
			B,
			C,
			D,
			K,
			S
	)		A = rotl((uint32_t)(A + H4(B, C, D) + x[K] + 0x6ed9eba1u), S)

Typedef Documentation

md_compress_fn

using md_compress_fn = void (*)(uint32_t[4], const uint8_t[64])

Definition at line 204 of file md.cpp.

Function Documentation

pc_md_wants()

MdCtx * pc_md_wants

(

void

)

Storage this module wants for one MD4/MD5 context.

The type is opaque, so a consumer cannot size it - this module owns the definition and therefore owns the allocation. Call inside a SecureScope: the scope states how long the caller needs the resource, and the pool wipes the digest state when that scope ends. MD4/MD5 here carry NTLM password and session-key material, so the storage comes from the secure pool.

Returns

a context to pass to pc_md4_init() / pc_md5_init(), or nullptr if the pool could not satisfy it.

Definition at line 28 of file md.cpp.

References pc_span::buf, pc_secure_span(), and pc_span_ok().

pc_md5_init()

void pc_md5_init

(

MdCtx *

c

)

Definition at line 103 of file md.cpp.

References MdCtx::bits, MdCtx::buf_len, and MdCtx::state.

Referenced by md5(), and pc_hmac_md5().

pc_md4_init()

void pc_md4_init

(

MdCtx *

c

)

Definition at line 192 of file md.cpp.

References MdCtx::bits, MdCtx::buf_len, and MdCtx::state.

Referenced by md4().

pc_md5_update()

void pc_md5_update	(	MdCtx *	c,
		const uint8_t *	data,
		size_t	len
	)

Definition at line 250 of file md.cpp.

Referenced by md5(), and pc_hmac_md5().

pc_md5_final()

void pc_md5_final	(	MdCtx *	c,
		uint8_t	out[16]
	)

Definition at line 254 of file md.cpp.

Referenced by md5(), and pc_hmac_md5().

pc_md4_update()

void pc_md4_update	(	MdCtx *	c,
		const uint8_t *	data,
		size_t	len
	)

Definition at line 258 of file md.cpp.

Referenced by md4().

pc_md4_final()

void pc_md4_final	(	MdCtx *	c,
		uint8_t	out[16]
	)

Definition at line 262 of file md.cpp.

Referenced by md4().

md5()

void md5	(	const uint8_t *	data,
		size_t	len,
		uint8_t	out[16]
	)

One-shot MD5.

Definition at line 267 of file md.cpp.

References pc_md5_final(), pc_md5_init(), and pc_md5_update().

Referenced by pc_hmac_md5().

md4()

void md4	(	const uint8_t *	data,
		size_t	len,
		uint8_t	out[16]
	)

One-shot MD4 (the NT-hash primitive).

Definition at line 274 of file md.cpp.

References pc_md4_final(), pc_md4_init(), and pc_md4_update().

pc_hmac_md5()

void pc_hmac_md5	(	const uint8_t *	key,
		size_t	key_len,
		const uint8_t *	msg,
		size_t	msg_len,
		uint8_t	out[16]
	)

HMAC-MD5 (RFC 2104): the NTLMv2 MAC primitive.

Definition at line 284 of file md.cpp.

References md5(), pc_md5_final(), pc_md5_init(), and pc_md5_update().