Hashes

MD5 Digest Functions. More...

Collaboration diagram for Hashes:

Data Structures
struct	_MD5CONTEXT
struct	MD5CONTEXT
	MD5 context structure. More...
Defines
#define	byteReverse(buf, len)
#define	F1(x, y, z)   (z ^ (x & (y ^ z)))
#define	F2(x, y, z)   F1(z, x, y)
#define	F3(x, y, z)   (x ^ y ^ z)
#define	F4(x, y, z)   (y ^ (x | ~z))
#define	MD5STEP(f, w, x, y, z, data, s)   ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
Typedefs
typedef struct _MD5CONTEXT	MD5CONTEXT
Functions
void	NutMD5Init (MD5CONTEXT *context)
	Start MD5 accumulation.
void	NutMD5Update (MD5CONTEXT *context, uint8_t CONST *buf, uint32_t len)
	Update MD5 context.
void	NutMD5Final (MD5CONTEXT *context, uint8_t digest[16])
	Final wrapup, calculate MD5 digest.

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Detailed Description

MD5 Digest Functions.

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Define Documentation

#define byteReverse	(		buf,
			len
	)

Definition at line 66 of file md5.c.

Referenced by NutMD5Final(), and NutMD5Update().

#define F1	(		x,
			y,
			z
	)		(z ^ (x & (y ^ z)))

Definition at line 85 of file md5.c.

#define F2	(		x,
			y,
			z
	)		F1(z, x, y)

Definition at line 86 of file md5.c.

#define F3	(		x,
			y,
			z
	)		(x ^ y ^ z)

Definition at line 87 of file md5.c.

#define F4	(		x,
			y,
			z
	)		(y ^ (x | ~z))

Definition at line 88 of file md5.c.

#define MD5STEP	(		f,
			w,
			x,
			y,
			z,
			data,
			s
	)		( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )

Definition at line 91 of file md5.c.

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Typedef Documentation

typedef struct _MD5CONTEXT MD5CONTEXT

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Function Documentation

void NutMD5Init

(

MD5CONTEXT *

context

)

Start MD5 accumulation.

Start MD5 accumulation, set bit count to 0 and buffer to mysterious initialization constants. Call this function to initialize every new MD5 calculation.

Parameters:

context

Points to the md5 context buffer.

Definition at line 192 of file md5.c.

void NutMD5Update	(	MD5CONTEXT *	context,
		uint8_t CONST *	buf,
		uint32_t	len
	)

Update MD5 context.

Update context to reflect the concatenation of another data buffer.

Parameters:

context	Points to the md5 context buffer.
buf	Points to the data buffer
len	Length of the data buffer

Definition at line 213 of file md5.c.

References byteReverse, and memcpy().

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void NutMD5Final	(	MD5CONTEXT *	context,
		uint8_t	digest[16]
	)

Final wrapup, calculate MD5 digest.

Final wrapup - pad to 64-byte boundary with the bit pattern 1 0* (64-bit count of bits processed, MSB-first) Fill in the digest into digest buffer

Parameters:

context	Points to the md5 context buffer.
digest	Points to the digest buffer, which must be 16 bytes long

Definition at line 275 of file md5.c.

References byteReverse, memcpy(), and memset().

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