2016-09-07 06:58:24 -03:00
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/* SHA3 module
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*
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* This module provides an interface to the SHA3 algorithm
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*
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* See below for information about the original code this module was
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* based upon. Additional work performed by:
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*
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* Andrew Kuchling (amk@amk.ca)
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* Greg Stein (gstein@lyra.org)
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* Trevor Perrin (trevp@trevp.net)
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* Gregory P. Smith (greg@krypto.org)
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*
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* Copyright (C) 2012-2016 Christian Heimes (christian@python.org)
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* Licensed to PSF under a Contributor Agreement.
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*
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*/
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#include "Python.h"
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#include "pystrhex.h"
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#include "../hashlib.h"
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/* **************************************************************************
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* SHA-3 (Keccak) and SHAKE
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*
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* The code is based on KeccakCodePackage from 2016-04-23
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* commit 647f93079afc4ada3d23737477a6e52511ca41fd
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*
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* The reference implementation is altered in this points:
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* - C++ comments are converted to ANSI C comments.
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* - all function names are mangled
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* - typedef for UINT64 is commented out.
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* - brg_endian.h is removed
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*
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* *************************************************************************/
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#ifdef __sparc
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/* opt64 uses un-aligned memory access that causes a BUS error with msg
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* 'invalid address alignment' on SPARC. */
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#define KeccakOpt 32
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2016-09-07 07:42:47 -03:00
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#elif PY_BIG_ENDIAN
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/* opt64 is not yet supported on big endian platforms */
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#define KeccakOpt 32
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2016-09-07 06:58:24 -03:00
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#elif SIZEOF_VOID_P == 8 && defined(PY_UINT64_T)
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2016-09-07 07:42:47 -03:00
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/* opt64 works only on little-endian 64bit platforms with unsigned int64 */
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2016-09-07 06:58:24 -03:00
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#define KeccakOpt 64
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#else
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/* opt32 is used for the remaining 32 and 64bit platforms */
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#define KeccakOpt 32
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#endif
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#if KeccakOpt == 64 && defined(PY_UINT64_T)
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/* 64bit platforms with unsigned int64 */
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typedef PY_UINT64_T UINT64;
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typedef unsigned char UINT8;
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#endif
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/* replacement for brg_endian.h */
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#define IS_LITTLE_ENDIAN 1234
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#define IS_BIG_ENDIAN 4321
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#if PY_LITTLE_ENDIAN
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#define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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#endif
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#if PY_BIG_ENDIAN
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#define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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#endif
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/* mangle names */
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#define KeccakF1600_FastLoop_Absorb _PySHA3_KeccakF1600_FastLoop_Absorb
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#define Keccak_HashFinal _PySHA3_Keccak_HashFinal
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#define Keccak_HashInitialize _PySHA3_Keccak_HashInitialize
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#define Keccak_HashSqueeze _PySHA3_Keccak_HashSqueeze
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#define Keccak_HashUpdate _PySHA3_Keccak_HashUpdate
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#define KeccakP1600_AddBytes _PySHA3_KeccakP1600_AddBytes
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#define KeccakP1600_AddBytesInLane _PySHA3_KeccakP1600_AddBytesInLane
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#define KeccakP1600_AddLanes _PySHA3_KeccakP1600_AddLanes
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#define KeccakP1600_ExtractAndAddBytes _PySHA3_KeccakP1600_ExtractAndAddBytes
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#define KeccakP1600_ExtractAndAddBytesInLane _PySHA3_KeccakP1600_ExtractAndAddBytesInLane
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#define KeccakP1600_ExtractAndAddLanes _PySHA3_KeccakP1600_ExtractAndAddLanes
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#define KeccakP1600_ExtractBytes _PySHA3_KeccakP1600_ExtractBytes
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#define KeccakP1600_ExtractBytesInLane _PySHA3_KeccakP1600_ExtractBytesInLane
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#define KeccakP1600_ExtractLanes _PySHA3_KeccakP1600_ExtractLanes
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#define KeccakP1600_Initialize _PySHA3_KeccakP1600_Initialize
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#define KeccakP1600_OverwriteBytes _PySHA3_KeccakP1600_OverwriteBytes
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#define KeccakP1600_OverwriteBytesInLane _PySHA3_KeccakP1600_OverwriteBytesInLane
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#define KeccakP1600_OverwriteLanes _PySHA3_KeccakP1600_OverwriteLanes
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#define KeccakP1600_OverwriteWithZeroes _PySHA3_KeccakP1600_OverwriteWithZeroes
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#define KeccakP1600_Permute_12rounds _PySHA3_KeccakP1600_Permute_12rounds
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#define KeccakP1600_Permute_24rounds _PySHA3_KeccakP1600_Permute_24rounds
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#define KeccakWidth1600_Sponge _PySHA3_KeccakWidth1600_Sponge
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#define KeccakWidth1600_SpongeAbsorb _PySHA3_KeccakWidth1600_SpongeAbsorb
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#define KeccakWidth1600_SpongeAbsorbLastFewBits _PySHA3_KeccakWidth1600_SpongeAbsorbLastFewBits
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#define KeccakWidth1600_SpongeInitialize _PySHA3_KeccakWidth1600_SpongeInitialize
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#define KeccakWidth1600_SpongeSqueeze _PySHA3_KeccakWidth1600_SpongeSqueeze
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#if KeccakOpt == 32
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#define KeccakP1600_AddByte _PySHA3_KeccakP1600_AddByte
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#define KeccakP1600_Permute_Nrounds _PySHA3_KeccakP1600_Permute_Nrounds
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#define KeccakP1600_SetBytesInLaneToZero _PySHA3_KeccakP1600_SetBytesInLaneToZero
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#endif
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/* we are only interested in KeccakP1600 */
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#define KeccakP200_excluded 1
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#define KeccakP400_excluded 1
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#define KeccakP800_excluded 1
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/* inline all Keccak dependencies */
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#include "kcp/KeccakHash.h"
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#include "kcp/KeccakSponge.h"
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#include "kcp/KeccakHash.c"
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#include "kcp/KeccakSponge.c"
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#if KeccakOpt == 64
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#include "kcp/KeccakP-1600-opt64.c"
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#elif KeccakOpt == 32
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#include "kcp/KeccakP-1600-inplace32BI.c"
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#endif
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#define SHA3_MAX_DIGESTSIZE 64 /* 64 Bytes (512 Bits) for 224 to 512 */
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2016-09-08 10:04:38 -03:00
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#define SHA3_LANESIZE (20 * 8) /* ExtractLane needs max uint64_t[20] extra. */
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2016-09-07 06:58:24 -03:00
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#define SHA3_state Keccak_HashInstance
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#define SHA3_init Keccak_HashInitialize
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#define SHA3_process Keccak_HashUpdate
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#define SHA3_done Keccak_HashFinal
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#define SHA3_squeeze Keccak_HashSqueeze
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#define SHA3_copystate(dest, src) memcpy(&(dest), &(src), sizeof(SHA3_state))
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/*[clinic input]
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module _sha3
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class _sha3.sha3_224 "SHA3object *" "&SHA3_224typ"
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class _sha3.sha3_256 "SHA3object *" "&SHA3_256typ"
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class _sha3.sha3_384 "SHA3object *" "&SHA3_384typ"
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class _sha3.sha3_512 "SHA3object *" "&SHA3_512typ"
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class _sha3.shake_128 "SHA3object *" "&SHAKE128type"
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class _sha3.shake_256 "SHA3object *" "&SHAKE256type"
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[clinic start generated code]*/
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/*[clinic end generated code: output=da39a3ee5e6b4b0d input=b8a53680f370285a]*/
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/* The structure for storing SHA3 info */
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typedef struct {
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PyObject_HEAD
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SHA3_state hash_state;
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#ifdef WITH_THREAD
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PyThread_type_lock lock;
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#endif
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} SHA3object;
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static PyTypeObject SHA3_224type;
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static PyTypeObject SHA3_256type;
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static PyTypeObject SHA3_384type;
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static PyTypeObject SHA3_512type;
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#ifdef PY_WITH_KECCAK
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static PyTypeObject Keccak_224type;
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static PyTypeObject Keccak_256type;
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static PyTypeObject Keccak_384type;
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static PyTypeObject Keccak_512type;
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#endif
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static PyTypeObject SHAKE128type;
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static PyTypeObject SHAKE256type;
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#include "clinic/sha3module.c.h"
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static SHA3object *
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newSHA3object(PyTypeObject *type)
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{
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SHA3object *newobj;
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newobj = (SHA3object *)PyObject_New(SHA3object, type);
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if (newobj == NULL) {
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return NULL;
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}
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#ifdef WITH_THREAD
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newobj->lock = NULL;
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#endif
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return newobj;
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}
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/*[clinic input]
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@classmethod
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_sha3.sha3_224.__new__ as py_sha3_new
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string as data: object = NULL
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Return a new SHA3 hash object with a hashbit length of 28 bytes.
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[clinic start generated code]*/
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static PyObject *
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py_sha3_new_impl(PyTypeObject *type, PyObject *data)
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/*[clinic end generated code: output=8d5c34279e69bf09 input=d7c582b950a858b6]*/
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{
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SHA3object *self = NULL;
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Py_buffer buf = {NULL, NULL};
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HashReturn res;
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self = newSHA3object(type);
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if (self == NULL) {
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goto error;
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}
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if (type == &SHA3_224type) {
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res = Keccak_HashInitialize_SHA3_224(&self->hash_state);
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} else if (type == &SHA3_256type) {
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res = Keccak_HashInitialize_SHA3_256(&self->hash_state);
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} else if (type == &SHA3_384type) {
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res = Keccak_HashInitialize_SHA3_384(&self->hash_state);
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} else if (type == &SHA3_512type) {
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res = Keccak_HashInitialize_SHA3_512(&self->hash_state);
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#ifdef PY_WITH_KECCAK
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} else if (type == &Keccak_224type) {
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res = Keccak_HashInitialize(&self->hash_state, 1152, 448, 224, 0x01);
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} else if (type == &Keccak_256type) {
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res = Keccak_HashInitialize(&self->hash_state, 1088, 512, 256, 0x01);
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} else if (type == &Keccak_384type) {
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res = Keccak_HashInitialize(&self->hash_state, 832, 768, 384, 0x01);
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} else if (type == &Keccak_512type) {
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res = Keccak_HashInitialize(&self->hash_state, 576, 1024, 512, 0x01);
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#endif
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} else if (type == &SHAKE128type) {
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res = Keccak_HashInitialize_SHAKE128(&self->hash_state);
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} else if (type == &SHAKE256type) {
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res = Keccak_HashInitialize_SHAKE256(&self->hash_state);
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} else {
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PyErr_BadInternalCall();
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goto error;
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}
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if (data) {
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GET_BUFFER_VIEW_OR_ERROR(data, &buf, goto error);
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#ifdef WITH_THREAD
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if (buf.len >= HASHLIB_GIL_MINSIZE) {
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/* invariant: New objects can't be accessed by other code yet,
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* thus it's safe to release the GIL without locking the object.
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*/
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Py_BEGIN_ALLOW_THREADS
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res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
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Py_END_ALLOW_THREADS
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}
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else {
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res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
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}
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#else
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res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
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#endif
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if (res != SUCCESS) {
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PyErr_SetString(PyExc_RuntimeError,
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"internal error in SHA3 Update()");
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goto error;
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}
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PyBuffer_Release(&buf);
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}
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return (PyObject *)self;
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error:
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if (self) {
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Py_DECREF(self);
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}
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if (data && buf.obj) {
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PyBuffer_Release(&buf);
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}
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return NULL;
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}
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/* Internal methods for a hash object */
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static void
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SHA3_dealloc(SHA3object *self)
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{
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#ifdef WITH_THREAD
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if (self->lock) {
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PyThread_free_lock(self->lock);
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}
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#endif
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PyObject_Del(self);
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}
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/* External methods for a hash object */
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/*[clinic input]
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_sha3.sha3_224.copy
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Return a copy of the hash object.
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[clinic start generated code]*/
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static PyObject *
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_sha3_sha3_224_copy_impl(SHA3object *self)
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/*[clinic end generated code: output=6c537411ecdcda4c input=93a44aaebea51ba8]*/
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{
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SHA3object *newobj;
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if ((newobj = newSHA3object(Py_TYPE(self))) == NULL) {
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return NULL;
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}
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ENTER_HASHLIB(self);
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SHA3_copystate(newobj->hash_state, self->hash_state);
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LEAVE_HASHLIB(self);
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return (PyObject *)newobj;
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}
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/*[clinic input]
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_sha3.sha3_224.digest
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Return the digest value as a string of binary data.
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[clinic start generated code]*/
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static PyObject *
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_sha3_sha3_224_digest_impl(SHA3object *self)
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/*[clinic end generated code: output=fd531842e20b2d5b input=a5807917d219b30e]*/
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{
|
2016-09-08 08:35:00 -03:00
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unsigned char digest[SHA3_MAX_DIGESTSIZE + SHA3_LANESIZE];
|
2016-09-07 06:58:24 -03:00
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SHA3_state temp;
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HashReturn res;
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ENTER_HASHLIB(self);
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SHA3_copystate(temp, self->hash_state);
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LEAVE_HASHLIB(self);
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res = SHA3_done(&temp, digest);
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if (res != SUCCESS) {
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PyErr_SetString(PyExc_RuntimeError, "internal error in SHA3 Final()");
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return NULL;
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}
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return PyBytes_FromStringAndSize((const char *)digest,
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self->hash_state.fixedOutputLength / 8);
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}
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/*[clinic input]
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_sha3.sha3_224.hexdigest
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Return the digest value as a string of hexadecimal digits.
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[clinic start generated code]*/
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static PyObject *
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_sha3_sha3_224_hexdigest_impl(SHA3object *self)
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|
|
|
/*[clinic end generated code: output=75ad03257906918d input=2d91bb6e0d114ee3]*/
|
|
|
|
{
|
2016-09-08 08:35:00 -03:00
|
|
|
unsigned char digest[SHA3_MAX_DIGESTSIZE + SHA3_LANESIZE];
|
2016-09-07 06:58:24 -03:00
|
|
|
SHA3_state temp;
|
|
|
|
HashReturn res;
|
|
|
|
|
|
|
|
/* Get the raw (binary) digest value */
|
|
|
|
ENTER_HASHLIB(self);
|
|
|
|
SHA3_copystate(temp, self->hash_state);
|
|
|
|
LEAVE_HASHLIB(self);
|
|
|
|
res = SHA3_done(&temp, digest);
|
|
|
|
if (res != SUCCESS) {
|
|
|
|
PyErr_SetString(PyExc_RuntimeError, "internal error in SHA3 Final()");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return _Py_strhex((const char *)digest,
|
|
|
|
self->hash_state.fixedOutputLength / 8);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*[clinic input]
|
|
|
|
_sha3.sha3_224.update
|
|
|
|
|
|
|
|
obj: object
|
|
|
|
/
|
|
|
|
|
|
|
|
Update this hash object's state with the provided string.
|
|
|
|
[clinic start generated code]*/
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
_sha3_sha3_224_update(SHA3object *self, PyObject *obj)
|
|
|
|
/*[clinic end generated code: output=06721d55b483e0af input=be44bf0d1c279791]*/
|
|
|
|
{
|
|
|
|
Py_buffer buf;
|
|
|
|
HashReturn res;
|
|
|
|
|
|
|
|
GET_BUFFER_VIEW_OR_ERROUT(obj, &buf);
|
|
|
|
|
|
|
|
/* add new data, the function takes the length in bits not bytes */
|
|
|
|
#ifdef WITH_THREAD
|
|
|
|
if (self->lock == NULL && buf.len >= HASHLIB_GIL_MINSIZE) {
|
|
|
|
self->lock = PyThread_allocate_lock();
|
|
|
|
}
|
|
|
|
/* Once a lock exists all code paths must be synchronized. We have to
|
|
|
|
* release the GIL even for small buffers as acquiring the lock may take
|
|
|
|
* an unlimited amount of time when another thread updates this object
|
|
|
|
* with lots of data. */
|
|
|
|
if (self->lock) {
|
|
|
|
Py_BEGIN_ALLOW_THREADS
|
|
|
|
PyThread_acquire_lock(self->lock, 1);
|
|
|
|
res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
|
|
|
|
PyThread_release_lock(self->lock);
|
|
|
|
Py_END_ALLOW_THREADS
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (res != SUCCESS) {
|
|
|
|
PyBuffer_Release(&buf);
|
|
|
|
PyErr_SetString(PyExc_RuntimeError,
|
|
|
|
"internal error in SHA3 Update()");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
PyBuffer_Release(&buf);
|
2017-01-23 03:47:21 -04:00
|
|
|
Py_RETURN_NONE;
|
2016-09-07 06:58:24 -03:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static PyMethodDef SHA3_methods[] = {
|
|
|
|
_SHA3_SHA3_224_COPY_METHODDEF
|
|
|
|
_SHA3_SHA3_224_DIGEST_METHODDEF
|
|
|
|
_SHA3_SHA3_224_HEXDIGEST_METHODDEF
|
|
|
|
_SHA3_SHA3_224_UPDATE_METHODDEF
|
|
|
|
{NULL, NULL} /* sentinel */
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
SHA3_get_block_size(SHA3object *self, void *closure)
|
|
|
|
{
|
|
|
|
int rate = self->hash_state.sponge.rate;
|
|
|
|
return PyLong_FromLong(rate / 8);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
SHA3_get_name(SHA3object *self, void *closure)
|
|
|
|
{
|
|
|
|
PyTypeObject *type = Py_TYPE(self);
|
|
|
|
if (type == &SHA3_224type) {
|
|
|
|
return PyUnicode_FromString("sha3_224");
|
|
|
|
} else if (type == &SHA3_256type) {
|
|
|
|
return PyUnicode_FromString("sha3_256");
|
|
|
|
} else if (type == &SHA3_384type) {
|
|
|
|
return PyUnicode_FromString("sha3_384");
|
|
|
|
} else if (type == &SHA3_512type) {
|
|
|
|
return PyUnicode_FromString("sha3_512");
|
|
|
|
#ifdef PY_WITH_KECCAK
|
|
|
|
} else if (type == &Keccak_224type) {
|
|
|
|
return PyUnicode_FromString("keccak_224");
|
|
|
|
} else if (type == &Keccak_256type) {
|
|
|
|
return PyUnicode_FromString("keccak_256");
|
|
|
|
} else if (type == &Keccak_384type) {
|
|
|
|
return PyUnicode_FromString("keccak_384");
|
|
|
|
} else if (type == &Keccak_512type) {
|
|
|
|
return PyUnicode_FromString("keccak_512");
|
|
|
|
#endif
|
|
|
|
} else if (type == &SHAKE128type) {
|
|
|
|
return PyUnicode_FromString("shake_128");
|
|
|
|
} else if (type == &SHAKE256type) {
|
|
|
|
return PyUnicode_FromString("shake_256");
|
|
|
|
} else {
|
|
|
|
PyErr_BadInternalCall();
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
SHA3_get_digest_size(SHA3object *self, void *closure)
|
|
|
|
{
|
|
|
|
return PyLong_FromLong(self->hash_state.fixedOutputLength / 8);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
SHA3_get_capacity_bits(SHA3object *self, void *closure)
|
|
|
|
{
|
|
|
|
int capacity = 1600 - self->hash_state.sponge.rate;
|
|
|
|
return PyLong_FromLong(capacity);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
SHA3_get_rate_bits(SHA3object *self, void *closure)
|
|
|
|
{
|
|
|
|
unsigned int rate = self->hash_state.sponge.rate;
|
|
|
|
return PyLong_FromLong(rate);
|
|
|
|
}
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
SHA3_get_suffix(SHA3object *self, void *closure)
|
|
|
|
{
|
|
|
|
unsigned char suffix[2];
|
|
|
|
suffix[0] = self->hash_state.delimitedSuffix;
|
|
|
|
suffix[1] = 0;
|
|
|
|
return PyBytes_FromStringAndSize((const char *)suffix, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static PyGetSetDef SHA3_getseters[] = {
|
|
|
|
{"block_size", (getter)SHA3_get_block_size, NULL, NULL, NULL},
|
|
|
|
{"name", (getter)SHA3_get_name, NULL, NULL, NULL},
|
|
|
|
{"digest_size", (getter)SHA3_get_digest_size, NULL, NULL, NULL},
|
|
|
|
{"_capacity_bits", (getter)SHA3_get_capacity_bits, NULL, NULL, NULL},
|
|
|
|
{"_rate_bits", (getter)SHA3_get_rate_bits, NULL, NULL, NULL},
|
|
|
|
{"_suffix", (getter)SHA3_get_suffix, NULL, NULL, NULL},
|
|
|
|
{NULL} /* Sentinel */
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
#define SHA3_TYPE(type_obj, type_name, type_doc, type_methods) \
|
|
|
|
static PyTypeObject type_obj = { \
|
|
|
|
PyVarObject_HEAD_INIT(NULL, 0) \
|
|
|
|
type_name, /* tp_name */ \
|
|
|
|
sizeof(SHA3object), /* tp_size */ \
|
|
|
|
0, /* tp_itemsize */ \
|
|
|
|
/* methods */ \
|
|
|
|
(destructor)SHA3_dealloc, /* tp_dealloc */ \
|
|
|
|
0, /* tp_print */ \
|
|
|
|
0, /* tp_getattr */ \
|
|
|
|
0, /* tp_setattr */ \
|
|
|
|
0, /* tp_reserved */ \
|
|
|
|
0, /* tp_repr */ \
|
|
|
|
0, /* tp_as_number */ \
|
|
|
|
0, /* tp_as_sequence */ \
|
|
|
|
0, /* tp_as_mapping */ \
|
|
|
|
0, /* tp_hash */ \
|
|
|
|
0, /* tp_call */ \
|
|
|
|
0, /* tp_str */ \
|
|
|
|
0, /* tp_getattro */ \
|
|
|
|
0, /* tp_setattro */ \
|
|
|
|
0, /* tp_as_buffer */ \
|
|
|
|
Py_TPFLAGS_DEFAULT, /* tp_flags */ \
|
|
|
|
type_doc, /* tp_doc */ \
|
|
|
|
0, /* tp_traverse */ \
|
|
|
|
0, /* tp_clear */ \
|
|
|
|
0, /* tp_richcompare */ \
|
|
|
|
0, /* tp_weaklistoffset */ \
|
|
|
|
0, /* tp_iter */ \
|
|
|
|
0, /* tp_iternext */ \
|
|
|
|
type_methods, /* tp_methods */ \
|
|
|
|
NULL, /* tp_members */ \
|
|
|
|
SHA3_getseters, /* tp_getset */ \
|
|
|
|
0, /* tp_base */ \
|
|
|
|
0, /* tp_dict */ \
|
|
|
|
0, /* tp_descr_get */ \
|
|
|
|
0, /* tp_descr_set */ \
|
|
|
|
0, /* tp_dictoffset */ \
|
|
|
|
0, /* tp_init */ \
|
|
|
|
0, /* tp_alloc */ \
|
|
|
|
py_sha3_new, /* tp_new */ \
|
|
|
|
}
|
|
|
|
|
|
|
|
PyDoc_STRVAR(sha3_256__doc__,
|
|
|
|
"sha3_256([string]) -> SHA3 object\n\
|
|
|
|
\n\
|
|
|
|
Return a new SHA3 hash object with a hashbit length of 32 bytes.");
|
|
|
|
|
|
|
|
PyDoc_STRVAR(sha3_384__doc__,
|
|
|
|
"sha3_384([string]) -> SHA3 object\n\
|
|
|
|
\n\
|
|
|
|
Return a new SHA3 hash object with a hashbit length of 48 bytes.");
|
|
|
|
|
|
|
|
PyDoc_STRVAR(sha3_512__doc__,
|
|
|
|
"sha3_512([string]) -> SHA3 object\n\
|
|
|
|
\n\
|
|
|
|
Return a new SHA3 hash object with a hashbit length of 64 bytes.");
|
|
|
|
|
|
|
|
SHA3_TYPE(SHA3_224type, "_sha3.sha3_224", py_sha3_new__doc__, SHA3_methods);
|
|
|
|
SHA3_TYPE(SHA3_256type, "_sha3.sha3_256", sha3_256__doc__, SHA3_methods);
|
|
|
|
SHA3_TYPE(SHA3_384type, "_sha3.sha3_384", sha3_384__doc__, SHA3_methods);
|
|
|
|
SHA3_TYPE(SHA3_512type, "_sha3.sha3_512", sha3_512__doc__, SHA3_methods);
|
|
|
|
|
|
|
|
#ifdef PY_WITH_KECCAK
|
|
|
|
PyDoc_STRVAR(keccak_224__doc__,
|
|
|
|
"keccak_224([string]) -> Keccak object\n\
|
|
|
|
\n\
|
|
|
|
Return a new Keccak hash object with a hashbit length of 28 bytes.");
|
|
|
|
|
|
|
|
PyDoc_STRVAR(keccak_256__doc__,
|
|
|
|
"keccak_256([string]) -> Keccak object\n\
|
|
|
|
\n\
|
|
|
|
Return a new Keccak hash object with a hashbit length of 32 bytes.");
|
|
|
|
|
|
|
|
PyDoc_STRVAR(keccak_384__doc__,
|
|
|
|
"keccak_384([string]) -> Keccak object\n\
|
|
|
|
\n\
|
|
|
|
Return a new Keccak hash object with a hashbit length of 48 bytes.");
|
|
|
|
|
|
|
|
PyDoc_STRVAR(keccak_512__doc__,
|
|
|
|
"keccak_512([string]) -> Keccak object\n\
|
|
|
|
\n\
|
|
|
|
Return a new Keccak hash object with a hashbit length of 64 bytes.");
|
|
|
|
|
|
|
|
SHA3_TYPE(Keccak_224type, "_sha3.keccak_224", keccak_224__doc__, SHA3_methods);
|
|
|
|
SHA3_TYPE(Keccak_256type, "_sha3.keccak_256", keccak_256__doc__, SHA3_methods);
|
|
|
|
SHA3_TYPE(Keccak_384type, "_sha3.keccak_384", keccak_384__doc__, SHA3_methods);
|
|
|
|
SHA3_TYPE(Keccak_512type, "_sha3.keccak_512", keccak_512__doc__, SHA3_methods);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
_SHAKE_digest(SHA3object *self, unsigned long digestlen, int hex)
|
|
|
|
{
|
|
|
|
unsigned char *digest = NULL;
|
|
|
|
SHA3_state temp;
|
|
|
|
int res;
|
|
|
|
PyObject *result = NULL;
|
|
|
|
|
2016-09-08 08:35:00 -03:00
|
|
|
/* ExtractLane needs at least SHA3_MAX_DIGESTSIZE + SHA3_LANESIZE and
|
|
|
|
* SHA3_LANESIZE extra space.
|
|
|
|
*/
|
2016-09-08 10:04:38 -03:00
|
|
|
digest = (unsigned char*)PyMem_Malloc(digestlen + SHA3_LANESIZE);
|
2016-09-08 08:35:00 -03:00
|
|
|
if (digest == NULL) {
|
2016-09-07 06:58:24 -03:00
|
|
|
return PyErr_NoMemory();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get the raw (binary) digest value */
|
|
|
|
ENTER_HASHLIB(self);
|
|
|
|
SHA3_copystate(temp, self->hash_state);
|
|
|
|
LEAVE_HASHLIB(self);
|
|
|
|
res = SHA3_done(&temp, NULL);
|
|
|
|
if (res != SUCCESS) {
|
|
|
|
PyErr_SetString(PyExc_RuntimeError, "internal error in SHA3 done()");
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
res = SHA3_squeeze(&temp, digest, digestlen * 8);
|
|
|
|
if (res != SUCCESS) {
|
|
|
|
PyErr_SetString(PyExc_RuntimeError, "internal error in SHA3 Squeeze()");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
if (hex) {
|
|
|
|
result = _Py_strhex((const char *)digest, digestlen);
|
|
|
|
} else {
|
|
|
|
result = PyBytes_FromStringAndSize((const char *)digest,
|
|
|
|
digestlen);
|
|
|
|
}
|
|
|
|
error:
|
|
|
|
if (digest != NULL) {
|
|
|
|
PyMem_Free(digest);
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*[clinic input]
|
|
|
|
_sha3.shake_128.digest
|
|
|
|
|
|
|
|
length: unsigned_long(bitwise=True)
|
|
|
|
\
|
|
|
|
|
|
|
|
Return the digest value as a string of binary data.
|
|
|
|
[clinic start generated code]*/
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
_sha3_shake_128_digest_impl(SHA3object *self, unsigned long length)
|
|
|
|
/*[clinic end generated code: output=2313605e2f87bb8f input=608c8ca80ae9d115]*/
|
|
|
|
{
|
|
|
|
return _SHAKE_digest(self, length, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*[clinic input]
|
|
|
|
_sha3.shake_128.hexdigest
|
|
|
|
|
|
|
|
length: unsigned_long(bitwise=True)
|
|
|
|
\
|
|
|
|
|
|
|
|
Return the digest value as a string of hexadecimal digits.
|
|
|
|
[clinic start generated code]*/
|
|
|
|
|
|
|
|
static PyObject *
|
|
|
|
_sha3_shake_128_hexdigest_impl(SHA3object *self, unsigned long length)
|
|
|
|
/*[clinic end generated code: output=bf8e2f1e490944a8 input=64e56b4760db4573]*/
|
|
|
|
{
|
|
|
|
return _SHAKE_digest(self, length, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static PyMethodDef SHAKE_methods[] = {
|
|
|
|
_SHA3_SHA3_224_COPY_METHODDEF
|
|
|
|
_SHA3_SHAKE_128_DIGEST_METHODDEF
|
|
|
|
_SHA3_SHAKE_128_HEXDIGEST_METHODDEF
|
|
|
|
_SHA3_SHA3_224_UPDATE_METHODDEF
|
|
|
|
{NULL, NULL} /* sentinel */
|
|
|
|
};
|
|
|
|
|
|
|
|
PyDoc_STRVAR(shake_128__doc__,
|
|
|
|
"shake_128([string]) -> SHAKE object\n\
|
|
|
|
\n\
|
|
|
|
Return a new SHAKE hash object.");
|
|
|
|
|
|
|
|
PyDoc_STRVAR(shake_256__doc__,
|
|
|
|
"shake_256([string]) -> SHAKE object\n\
|
|
|
|
\n\
|
|
|
|
Return a new SHAKE hash object.");
|
|
|
|
|
|
|
|
SHA3_TYPE(SHAKE128type, "_sha3.shake_128", shake_128__doc__, SHAKE_methods);
|
|
|
|
SHA3_TYPE(SHAKE256type, "_sha3.shake_256", shake_256__doc__, SHAKE_methods);
|
|
|
|
|
|
|
|
|
|
|
|
/* Initialize this module. */
|
|
|
|
static struct PyModuleDef _SHA3module = {
|
|
|
|
PyModuleDef_HEAD_INIT,
|
|
|
|
"_sha3",
|
|
|
|
NULL,
|
|
|
|
-1,
|
|
|
|
NULL,
|
|
|
|
NULL,
|
|
|
|
NULL,
|
|
|
|
NULL,
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
PyMODINIT_FUNC
|
|
|
|
PyInit__sha3(void)
|
|
|
|
{
|
|
|
|
PyObject *m = NULL;
|
|
|
|
|
2016-09-08 08:35:00 -03:00
|
|
|
if ((m = PyModule_Create(&_SHA3module)) == NULL) {
|
|
|
|
return NULL;
|
|
|
|
}
|
2016-09-07 06:58:24 -03:00
|
|
|
|
|
|
|
#define init_sha3type(name, type) \
|
|
|
|
do { \
|
|
|
|
Py_TYPE(type) = &PyType_Type; \
|
|
|
|
if (PyType_Ready(type) < 0) { \
|
|
|
|
goto error; \
|
|
|
|
} \
|
|
|
|
Py_INCREF((PyObject *)type); \
|
|
|
|
if (PyModule_AddObject(m, name, (PyObject *)type) < 0) { \
|
|
|
|
goto error; \
|
|
|
|
} \
|
|
|
|
} while(0)
|
|
|
|
|
|
|
|
init_sha3type("sha3_224", &SHA3_224type);
|
|
|
|
init_sha3type("sha3_256", &SHA3_256type);
|
|
|
|
init_sha3type("sha3_384", &SHA3_384type);
|
|
|
|
init_sha3type("sha3_512", &SHA3_512type);
|
|
|
|
#ifdef PY_WITH_KECCAK
|
|
|
|
init_sha3type("keccak_224", &Keccak_224type);
|
|
|
|
init_sha3type("keccak_256", &Keccak_256type);
|
|
|
|
init_sha3type("keccak_384", &Keccak_384type);
|
|
|
|
init_sha3type("keccak_512", &Keccak_512type);
|
|
|
|
#endif
|
|
|
|
init_sha3type("shake_128", &SHAKE128type);
|
|
|
|
init_sha3type("shake_256", &SHAKE256type);
|
|
|
|
|
|
|
|
#undef init_sha3type
|
|
|
|
|
|
|
|
if (PyModule_AddIntConstant(m, "keccakopt", KeccakOpt) < 0) {
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
if (PyModule_AddStringConstant(m, "implementation",
|
|
|
|
KeccakP1600_implementation) < 0) {
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
return m;
|
|
|
|
error:
|
|
|
|
Py_DECREF(m);
|
|
|
|
return NULL;
|
|
|
|
}
|