inc/md5.h File Reference

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Data Structures
struct	md5_context
Defines
#define	uint8   unsigned char
#define	uint32   unsigned long int
#define	uint64   unsigned long long int
Functions
void	md5_starts (struct md5_context *ctx)
void	md5_update (struct md5_context *ctx, uint8 *input, uint32 length)
void	md5_finish (struct md5_context *ctx, uint8 digest[16])

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Define Documentation

#define uint32   unsigned long int

Definition at line 5 of file md5.h.

Referenced by md5_finish(), md5_process(), and md5_update().

#define uint64   unsigned long long int

Definition at line 6 of file md5.h.

#define uint8   unsigned char

Definition at line 4 of file md5.h.

Referenced by md5_finish().

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Function Documentation

void md5_finish	(	struct md5_context *	ctx,
		uint8	digest[16]
	)

Definition at line 201 of file md5.c.

References md5_padding, md5_update(), PUT_UINT32, md5_context::total, uint32, and uint8.

{
    uint32 last, padn;
    uint8 msglen[8];

    PUT_UINT32( (uint32) ((ctx->total <<  3) & 0xFFFFFFFF), msglen, 0 );
    PUT_UINT32( (uint32) ((ctx->total >> 29) & 0xFFFFFFFF), msglen, 4 );

    last = (uint32) (ctx->total & 0x3F);
    padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );

    md5_update( ctx, md5_padding, padn );
    md5_update( ctx, msglen, 8 );

    PUT_UINT32( ctx->state[0], digest,  0 );
    PUT_UINT32( ctx->state[1], digest,  4 );
    PUT_UINT32( ctx->state[2], digest,  8 );
    PUT_UINT32( ctx->state[3], digest, 12 );
}

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void md5_starts

(

struct md5_context *

ctx

)

Definition at line 28 of file md5.c.

References md5_context::state, and md5_context::total.

{
    ctx->total = 0;
    ctx->state[0] = 0x67452301;
    ctx->state[1] = 0xEFCDAB89;
    ctx->state[2] = 0x98BADCFE;
    ctx->state[3] = 0x10325476;
}

void md5_update	(	struct md5_context *	ctx,
		uint8 *	input,
		uint32	length
	)

Definition at line 160 of file md5.c.

References md5_context::buffer, md5_process(), md5_context::total, and uint32.

Referenced by md5_finish().

{
    uint32 left, fill;

    if( ! length ) return;

    left = (uint32) (ctx->total & 0x3F);
    fill = 64 - left;

    ctx->total += length;

    if( left && length >= fill )
    {
        memcpy( (void *) (ctx->buffer + left), (void *) input, fill );
        md5_process( ctx, ctx->buffer );
        length -= fill;
        input  += fill;
        left = 0;
    }

    while( length >= 64 )
    {
        md5_process( ctx, input );
        length -= 64;
        input  += 64;
    }

    if( length )
    {
        memcpy( (void *) (ctx->buffer + left), (void *) input, length );
    }
}

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