Exemple #1
0
static PyObject *
py_sha3_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
    SHA3object *self = NULL;
    Py_buffer buf = {NULL, NULL};
    HashReturn res;
    PyObject *data = NULL;

    if (!_PyArg_NoKeywords(_PyType_Name(type), kwargs)) {
        return NULL;
    }
    if (!PyArg_UnpackTuple(args, _PyType_Name(type), 0, 1, &data)) {
        return NULL;
    }

    self = newSHA3object(type);
    if (self == NULL) {
        goto error;
    }

    if (type == &SHA3_224type) {
        res = Keccak_HashInitialize_SHA3_224(&self->hash_state);
    } else if (type == &SHA3_256type) {
        res = Keccak_HashInitialize_SHA3_256(&self->hash_state);
    } else if (type == &SHA3_384type) {
        res = Keccak_HashInitialize_SHA3_384(&self->hash_state);
    } else if (type == &SHA3_512type) {
        res = Keccak_HashInitialize_SHA3_512(&self->hash_state);
#ifdef PY_WITH_KECCAK
    } else if (type == &Keccak_224type) {
        res = Keccak_HashInitialize(&self->hash_state, 1152, 448, 224, 0x01);
    } else if (type == &Keccak_256type) {
        res = Keccak_HashInitialize(&self->hash_state, 1088, 512, 256, 0x01);
    } else if (type == &Keccak_384type) {
        res = Keccak_HashInitialize(&self->hash_state, 832, 768, 384, 0x01);
    } else if (type == &Keccak_512type) {
        res = Keccak_HashInitialize(&self->hash_state, 576, 1024, 512, 0x01);
#endif
    } else if (type == &SHAKE128type) {
        res = Keccak_HashInitialize_SHAKE128(&self->hash_state);
    } else if (type == &SHAKE256type) {
        res = Keccak_HashInitialize_SHAKE256(&self->hash_state);
    } else {
        PyErr_BadInternalCall();
        goto error;
    }

    if (data) {
        GET_BUFFER_VIEW_OR_ERROR(data, &buf, goto error);
        if (buf.len >= HASHLIB_GIL_MINSIZE) {
            /* invariant: New objects can't be accessed by other code yet,
             * thus it's safe to release the GIL without locking the object.
             */
            Py_BEGIN_ALLOW_THREADS
            res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
            Py_END_ALLOW_THREADS
        }
        else {
static void BLS_HASHIT(ECP_ZZZ *P,char *m)
{
	int i;
    sha3 hs;
	char h[MODBYTES_XXX];
    octet HM= {0,sizeof(h),h};
	SHA3_init(&hs,SHAKE256);
    for (i=0;m[i]!=0;i++) SHA3_process(&hs,m[i]);
    SHA3_shake(&hs,HM.val,MODBYTES_XXX);
	HM.len=MODBYTES_XXX;
	ECP_ZZZ_mapit(P,&HM);
}
Exemple #3
0
static PyObject *
py_sha3_new_impl(PyTypeObject *type, PyObject *data)
/*[clinic end generated code: output=8d5c34279e69bf09 input=d7c582b950a858b6]*/
{
    SHA3object *self = NULL;
    Py_buffer buf = {NULL, NULL};
    HashReturn res;

    self = newSHA3object(type);
    if (self == NULL) {
        goto error;
    }

    if (type == &SHA3_224type) {
        res = Keccak_HashInitialize_SHA3_224(&self->hash_state);
    } else if (type == &SHA3_256type) {
        res = Keccak_HashInitialize_SHA3_256(&self->hash_state);
    } else if (type == &SHA3_384type) {
        res = Keccak_HashInitialize_SHA3_384(&self->hash_state);
    } else if (type == &SHA3_512type) {
        res = Keccak_HashInitialize_SHA3_512(&self->hash_state);
#ifdef PY_WITH_KECCAK
    } else if (type == &Keccak_224type) {
        res = Keccak_HashInitialize(&self->hash_state, 1152, 448, 224, 0x01);
    } else if (type == &Keccak_256type) {
        res = Keccak_HashInitialize(&self->hash_state, 1088, 512, 256, 0x01);
    } else if (type == &Keccak_384type) {
        res = Keccak_HashInitialize(&self->hash_state, 832, 768, 384, 0x01);
    } else if (type == &Keccak_512type) {
        res = Keccak_HashInitialize(&self->hash_state, 576, 1024, 512, 0x01);
#endif
    } else if (type == &SHAKE128type) {
        res = Keccak_HashInitialize_SHAKE128(&self->hash_state);
    } else if (type == &SHAKE256type) {
        res = Keccak_HashInitialize_SHAKE256(&self->hash_state);
    } else {
        PyErr_BadInternalCall();
        goto error;
    }

    if (data) {
        GET_BUFFER_VIEW_OR_ERROR(data, &buf, goto error);
#ifdef WITH_THREAD
        if (buf.len >= HASHLIB_GIL_MINSIZE) {
            /* invariant: New objects can't be accessed by other code yet,
             * thus it's safe to release the GIL without locking the object.
             */
            Py_BEGIN_ALLOW_THREADS
            res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
            Py_END_ALLOW_THREADS
        }
        else {
Exemple #4
0
        PyErr_BadInternalCall();
        goto error;
    }

    if (data) {
        GET_BUFFER_VIEW_OR_ERROR(data, &buf, goto error);
        if (buf.len >= HASHLIB_GIL_MINSIZE) {
            /* invariant: New objects can't be accessed by other code yet,
             * thus it's safe to release the GIL without locking the object.
             */
            Py_BEGIN_ALLOW_THREADS
            res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
            Py_END_ALLOW_THREADS
        }
        else {
            res = SHA3_process(&self->hash_state, buf.buf, buf.len * 8);
        }
        if (res != SUCCESS) {
            PyErr_SetString(PyExc_RuntimeError,
                            "internal error in SHA3 Update()");
            goto error;
        }
        PyBuffer_Release(&buf);
    }

    return (PyObject *)self;

  error:
    if (self) {
        Py_DECREF(self);
    }