apr_siphash.c File Reference

#include "apr_siphash.h"

Go to the source code of this file.

Macros
#define	ROTL64(x, n)   (((x) << (n)) | ((x) >> (64 - (n))))
#define	U8TO64_LE(p)
#define	U64TO8_LE(p, v)
#define	SIPROUND()
#define	SIPHASH(r, s, n, k)
#define	cROUNDS
#define	dROUNDS
#define	cROUNDS
#define	dROUNDS
#define	cROUNDS
#define	dROUNDS

Functions
	APU_DECLARE (apr_uint64_t)
	Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key.
	APU_DECLARE (void)
	Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC.

Macro Definition Documentation

cROUNDS [1/3]

#define cROUNDS

Value:

        for (i = 0; i < c; ++i) { \
            SIPROUND(); \
        }

cROUNDS [2/3]

#define cROUNDS

Value:

        SIPROUND(); \
        SIPROUND();

cROUNDS [3/3]

#define cROUNDS

Value:

        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND();

dROUNDS [1/3]

#define dROUNDS

Value:

        for (i = 0; i < d; ++i) { \
            SIPROUND(); \
        }

dROUNDS [2/3]

#define dROUNDS

Value:

        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND();

dROUNDS [3/3]

#define dROUNDS

Value:

        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND();

ROTL64

#define ROTL64	(		x,
			n
	)		(((x) << (n)) | ((x) >> (64 - (n))))

Definition at line 24 of file apr_siphash.c.

SIPHASH

#define SIPHASH	(		r,
			s,
			n,
			k
	)

Definition at line 56 of file apr_siphash.c.

SIPROUND

#define SIPROUND

(

)

Value:

do { \
    v0 += v1; v1=ROTL64(v1,13); v1 ^= v0; v0=ROTL64(v0,32); \
    v2 += v3; v3=ROTL64(v3,16); v3 ^= v2; \
    v0 += v3; v3=ROTL64(v3,21); v3 ^= v0; \
    v2 += v1; v1=ROTL64(v1,17); v1 ^= v2; v2=ROTL64(v2,32); \
} while(0)

Definition at line 48 of file apr_siphash.c.

U64TO8_LE

#define U64TO8_LE	(		p,
			v
	)

Value:

do { \
    (p)[0] = (unsigned char)((v)      ); \
    (p)[1] = (unsigned char)((v) >>  8); \
    (p)[2] = (unsigned char)((v) >> 16); \
    (p)[3] = (unsigned char)((v) >> 24); \
    (p)[4] = (unsigned char)((v) >> 32); \
    (p)[5] = (unsigned char)((v) >> 40); \
    (p)[6] = (unsigned char)((v) >> 48); \
    (p)[7] = (unsigned char)((v) >> 56); \
} while (0)

Definition at line 36 of file apr_siphash.c.

U8TO64_LE

#define U8TO64_LE

(

p

)

Value:

    (((apr_uint64_t)((p)[0])      ) | \
     ((apr_uint64_t)((p)[1]) <<  8) | \
     ((apr_uint64_t)((p)[2]) << 16) | \
     ((apr_uint64_t)((p)[3]) << 24) | \
     ((apr_uint64_t)((p)[4]) << 32) | \
     ((apr_uint64_t)((p)[5]) << 40) | \
     ((apr_uint64_t)((p)[6]) << 48) | \
     ((apr_uint64_t)((p)[7]) << 56))

Definition at line 26 of file apr_siphash.c.

Function Documentation

APU_DECLARE() [1/2]

APU_DECLARE

(

apr_uint64_t

)

Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key.

Computes SipHash-4-8, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key.

Parameters

src	The message to hash
len	The length of the message
key	The secret key

Returns

The hash value as a 64bit unsigned integer

Parameters

src	The message
len	The length of the message
key	The secret key

Returns

The hash value as a 64bit unsigned integer

Definition at line 98 of file apr_siphash.c.

APU_DECLARE() [2/2]

APU_DECLARE

(

void

)

Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC.

Return APR-util's version information information in a numeric form.

Parameters

pvsn	Pointer to a version structure for returning the version information.

Computes SipHash-4-8, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC.

Initialize the SHA digest

Parameters

context

The SHA context to initialize

Update the SHA digest

Parameters

context	The SHA1 context to update
input	The buffer to add to the SHA digest
inputLen	The length of the input buffer

Update the SHA digest with binary data

Parameters

context	The SHA1 context to update
input	The buffer to add to the SHA digest
inputLen	The length of the input buffer

Finish computing the SHA digest

Parameters

digest	the output buffer in which to store the digest
context	The context to finalize
out	The output buffer (or MAC)
src	The message
len	The length of the message
key	The secret key

Returns

The hash value as a 64bit unsigned integer

< use pool pre cleanup

Definition at line 121 of file apr_siphash.c.