diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Modules/sha256module.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Modules/sha256module.c Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,699 @@ +/* SHA256 module */ + +/* This module provides an interface to NIST's SHA-256 and SHA-224 Algorithms */ + +/* See below for information about the original code this module was + based upon. Additional work performed by: + + Andrew Kuchling (amk@amk.ca) + Greg Stein (gstein@lyra.org) + Trevor Perrin (trevp@trevp.net) + + Copyright (C) 2005 Gregory P. Smith (greg@krypto.org) + Licensed to PSF under a Contributor Agreement. + +*/ + +/* SHA objects */ + +#include "Python.h" +#include "structmember.h" + + +/* Endianness testing and definitions */ +#define TestEndianness(variable) {int i=1; variable=PCT_BIG_ENDIAN;\ + if (*((char*)&i)==1) variable=PCT_LITTLE_ENDIAN;} + +#define PCT_LITTLE_ENDIAN 1 +#define PCT_BIG_ENDIAN 0 + +/* Some useful types */ + +typedef unsigned char SHA_BYTE; + +#if SIZEOF_INT == 4 +typedef unsigned int SHA_INT32; /* 32-bit integer */ +#else +/* not defined. compilation will die. */ +#endif + +/* The SHA block size and message digest sizes, in bytes */ + +#define SHA_BLOCKSIZE 64 +#define SHA_DIGESTSIZE 32 + +/* The structure for storing SHA info */ + +typedef struct { + PyObject_HEAD + SHA_INT32 digest[8]; /* Message digest */ + SHA_INT32 count_lo, count_hi; /* 64-bit bit count */ + SHA_BYTE data[SHA_BLOCKSIZE]; /* SHA data buffer */ + int Endianness; + int local; /* unprocessed amount in data */ + int digestsize; +} SHAobject; + +/* When run on a little-endian CPU we need to perform byte reversal on an + array of longwords. */ + +static void longReverse(SHA_INT32 *buffer, int byteCount, int Endianness) +{ + SHA_INT32 value; + + if ( Endianness == PCT_BIG_ENDIAN ) + return; + + byteCount /= sizeof(*buffer); + while (byteCount--) { + value = *buffer; + value = ( ( value & 0xFF00FF00L ) >> 8 ) | \ + ( ( value & 0x00FF00FFL ) << 8 ); + *buffer++ = ( value << 16 ) | ( value >> 16 ); + } +} + +static void SHAcopy(SHAobject *src, SHAobject *dest) +{ + dest->Endianness = src->Endianness; + dest->local = src->local; + dest->digestsize = src->digestsize; + dest->count_lo = src->count_lo; + dest->count_hi = src->count_hi; + memcpy(dest->digest, src->digest, sizeof(src->digest)); + memcpy(dest->data, src->data, sizeof(src->data)); +} + + +/* ------------------------------------------------------------------------ + * + * This code for the SHA-256 algorithm was noted as public domain. The + * original headers are pasted below. + * + * Several changes have been made to make it more compatible with the + * Python environment and desired interface. + * + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * gurantee it works. + * + * Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org + */ + + +/* SHA256 by Tom St Denis */ + +/* Various logical functions */ +#define ROR(x, y)\ +( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | \ +((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) +#define Ch(x,y,z) (z ^ (x & (y ^ z))) +#define Maj(x,y,z) (((x | y) & z) | (x & y)) +#define S(x, n) ROR((x),(n)) +#define R(x, n) (((x)&0xFFFFFFFFUL)>>(n)) +#define Sigma0(x) (S(x, 2) ^ S(x, 13) ^ S(x, 22)) +#define Sigma1(x) (S(x, 6) ^ S(x, 11) ^ S(x, 25)) +#define Gamma0(x) (S(x, 7) ^ S(x, 18) ^ R(x, 3)) +#define Gamma1(x) (S(x, 17) ^ S(x, 19) ^ R(x, 10)) + + +static void +sha_transform(SHAobject *sha_info) +{ + int i; + SHA_INT32 S[8], W[64], t0, t1; + + memcpy(W, sha_info->data, sizeof(sha_info->data)); + longReverse(W, (int)sizeof(sha_info->data), sha_info->Endianness); + + for (i = 16; i < 64; ++i) { + W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16]; + } + for (i = 0; i < 8; ++i) { + S[i] = sha_info->digest[i]; + } + + /* Compress */ +#define RND(a,b,c,d,e,f,g,h,i,ki) \ + t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \ + t1 = Sigma0(a) + Maj(a, b, c); \ + d += t0; \ + h = t0 + t1; + + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,0x428a2f98); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,0x71374491); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,0xb5c0fbcf); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,0xe9b5dba5); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,0x3956c25b); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,0x59f111f1); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,0x923f82a4); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,0xab1c5ed5); + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,0xd807aa98); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,0x12835b01); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,0x243185be); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,0x550c7dc3); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,0x72be5d74); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,0x80deb1fe); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,0x9bdc06a7); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,0xc19bf174); + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,0xe49b69c1); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,0xefbe4786); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,0x0fc19dc6); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,0x240ca1cc); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,0x2de92c6f); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,0x4a7484aa); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,0x5cb0a9dc); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,0x76f988da); + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,0x983e5152); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,0xa831c66d); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,0xb00327c8); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,0xbf597fc7); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,0xc6e00bf3); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,0xd5a79147); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,0x06ca6351); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,0x14292967); + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,0x27b70a85); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,0x2e1b2138); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,0x4d2c6dfc); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,0x53380d13); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,0x650a7354); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,0x766a0abb); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,0x81c2c92e); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,0x92722c85); + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,0xa2bfe8a1); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,0xa81a664b); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,0xc24b8b70); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,0xc76c51a3); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,0xd192e819); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,0xd6990624); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,0xf40e3585); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,0x106aa070); + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,0x19a4c116); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,0x1e376c08); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,0x2748774c); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,0x34b0bcb5); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,0x391c0cb3); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,0x4ed8aa4a); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,0x5b9cca4f); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,0x682e6ff3); + RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,0x748f82ee); + RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,0x78a5636f); + RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,0x84c87814); + RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,0x8cc70208); + RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,0x90befffa); + RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,0xa4506ceb); + RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,0xbef9a3f7); + RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,0xc67178f2); + +#undef RND + + /* feedback */ + for (i = 0; i < 8; i++) { + sha_info->digest[i] = sha_info->digest[i] + S[i]; + } + +} + + + +/* initialize the SHA digest */ + +static void +sha_init(SHAobject *sha_info) +{ + TestEndianness(sha_info->Endianness) + sha_info->digest[0] = 0x6A09E667L; + sha_info->digest[1] = 0xBB67AE85L; + sha_info->digest[2] = 0x3C6EF372L; + sha_info->digest[3] = 0xA54FF53AL; + sha_info->digest[4] = 0x510E527FL; + sha_info->digest[5] = 0x9B05688CL; + sha_info->digest[6] = 0x1F83D9ABL; + sha_info->digest[7] = 0x5BE0CD19L; + sha_info->count_lo = 0L; + sha_info->count_hi = 0L; + sha_info->local = 0; + sha_info->digestsize = 32; +} + +static void +sha224_init(SHAobject *sha_info) +{ + TestEndianness(sha_info->Endianness) + sha_info->digest[0] = 0xc1059ed8L; + sha_info->digest[1] = 0x367cd507L; + sha_info->digest[2] = 0x3070dd17L; + sha_info->digest[3] = 0xf70e5939L; + sha_info->digest[4] = 0xffc00b31L; + sha_info->digest[5] = 0x68581511L; + sha_info->digest[6] = 0x64f98fa7L; + sha_info->digest[7] = 0xbefa4fa4L; + sha_info->count_lo = 0L; + sha_info->count_hi = 0L; + sha_info->local = 0; + sha_info->digestsize = 28; +} + + +/* update the SHA digest */ + +static void +sha_update(SHAobject *sha_info, SHA_BYTE *buffer, int count) +{ + int i; + SHA_INT32 clo; + + clo = sha_info->count_lo + ((SHA_INT32) count << 3); + if (clo < sha_info->count_lo) { + ++sha_info->count_hi; + } + sha_info->count_lo = clo; + sha_info->count_hi += (SHA_INT32) count >> 29; + if (sha_info->local) { + i = SHA_BLOCKSIZE - sha_info->local; + if (i > count) { + i = count; + } + memcpy(((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i); + count -= i; + buffer += i; + sha_info->local += i; + if (sha_info->local == SHA_BLOCKSIZE) { + sha_transform(sha_info); + } + else { + return; + } + } + while (count >= SHA_BLOCKSIZE) { + memcpy(sha_info->data, buffer, SHA_BLOCKSIZE); + buffer += SHA_BLOCKSIZE; + count -= SHA_BLOCKSIZE; + sha_transform(sha_info); + } + memcpy(sha_info->data, buffer, count); + sha_info->local = count; +} + +/* finish computing the SHA digest */ + +static void +sha_final(unsigned char digest[SHA_DIGESTSIZE], SHAobject *sha_info) +{ + int count; + SHA_INT32 lo_bit_count, hi_bit_count; + + lo_bit_count = sha_info->count_lo; + hi_bit_count = sha_info->count_hi; + count = (int) ((lo_bit_count >> 3) & 0x3f); + ((SHA_BYTE *) sha_info->data)[count++] = 0x80; + if (count > SHA_BLOCKSIZE - 8) { + memset(((SHA_BYTE *) sha_info->data) + count, 0, + SHA_BLOCKSIZE - count); + sha_transform(sha_info); + memset((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 8); + } + else { + memset(((SHA_BYTE *) sha_info->data) + count, 0, + SHA_BLOCKSIZE - 8 - count); + } + + /* GJS: note that we add the hi/lo in big-endian. sha_transform will + swap these values into host-order. */ + sha_info->data[56] = (hi_bit_count >> 24) & 0xff; + sha_info->data[57] = (hi_bit_count >> 16) & 0xff; + sha_info->data[58] = (hi_bit_count >> 8) & 0xff; + sha_info->data[59] = (hi_bit_count >> 0) & 0xff; + sha_info->data[60] = (lo_bit_count >> 24) & 0xff; + sha_info->data[61] = (lo_bit_count >> 16) & 0xff; + sha_info->data[62] = (lo_bit_count >> 8) & 0xff; + sha_info->data[63] = (lo_bit_count >> 0) & 0xff; + sha_transform(sha_info); + digest[ 0] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff); + digest[ 1] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff); + digest[ 2] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff); + digest[ 3] = (unsigned char) ((sha_info->digest[0] ) & 0xff); + digest[ 4] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff); + digest[ 5] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff); + digest[ 6] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff); + digest[ 7] = (unsigned char) ((sha_info->digest[1] ) & 0xff); + digest[ 8] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff); + digest[ 9] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff); + digest[10] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff); + digest[11] = (unsigned char) ((sha_info->digest[2] ) & 0xff); + digest[12] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff); + digest[13] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff); + digest[14] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff); + digest[15] = (unsigned char) ((sha_info->digest[3] ) & 0xff); + digest[16] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff); + digest[17] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff); + digest[18] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff); + digest[19] = (unsigned char) ((sha_info->digest[4] ) & 0xff); + digest[20] = (unsigned char) ((sha_info->digest[5] >> 24) & 0xff); + digest[21] = (unsigned char) ((sha_info->digest[5] >> 16) & 0xff); + digest[22] = (unsigned char) ((sha_info->digest[5] >> 8) & 0xff); + digest[23] = (unsigned char) ((sha_info->digest[5] ) & 0xff); + digest[24] = (unsigned char) ((sha_info->digest[6] >> 24) & 0xff); + digest[25] = (unsigned char) ((sha_info->digest[6] >> 16) & 0xff); + digest[26] = (unsigned char) ((sha_info->digest[6] >> 8) & 0xff); + digest[27] = (unsigned char) ((sha_info->digest[6] ) & 0xff); + digest[28] = (unsigned char) ((sha_info->digest[7] >> 24) & 0xff); + digest[29] = (unsigned char) ((sha_info->digest[7] >> 16) & 0xff); + digest[30] = (unsigned char) ((sha_info->digest[7] >> 8) & 0xff); + digest[31] = (unsigned char) ((sha_info->digest[7] ) & 0xff); +} + +/* + * End of copied SHA code. + * + * ------------------------------------------------------------------------ + */ + +static PyTypeObject SHA224type; +static PyTypeObject SHA256type; + + +static SHAobject * +newSHA224object(void) +{ + return (SHAobject *)PyObject_New(SHAobject, &SHA224type); +} + +static SHAobject * +newSHA256object(void) +{ + return (SHAobject *)PyObject_New(SHAobject, &SHA256type); +} + +/* Internal methods for a hash object */ + +static void +SHA_dealloc(PyObject *ptr) +{ + PyObject_Del(ptr); +} + + +/* External methods for a hash object */ + +PyDoc_STRVAR(SHA256_copy__doc__, "Return a copy of the hash object."); + +static PyObject * +SHA256_copy(SHAobject *self, PyObject *unused) +{ + SHAobject *newobj; + + if (Py_TYPE(self) == &SHA256type) { + if ( (newobj = newSHA256object())==NULL) + return NULL; + } else { + if ( (newobj = newSHA224object())==NULL) + return NULL; + } + + SHAcopy(self, newobj); + return (PyObject *)newobj; +} + +PyDoc_STRVAR(SHA256_digest__doc__, +"Return the digest value as a string of binary data."); + +static PyObject * +SHA256_digest(SHAobject *self, PyObject *unused) +{ + unsigned char digest[SHA_DIGESTSIZE]; + SHAobject temp; + + SHAcopy(self, &temp); + sha_final(digest, &temp); + return PyString_FromStringAndSize((const char *)digest, self->digestsize); +} + +PyDoc_STRVAR(SHA256_hexdigest__doc__, +"Return the digest value as a string of hexadecimal digits."); + +static PyObject * +SHA256_hexdigest(SHAobject *self, PyObject *unused) +{ + unsigned char digest[SHA_DIGESTSIZE]; + SHAobject temp; + PyObject *retval; + char *hex_digest; + int i, j; + + /* Get the raw (binary) digest value */ + SHAcopy(self, &temp); + sha_final(digest, &temp); + + /* Create a new string */ + retval = PyString_FromStringAndSize(NULL, self->digestsize * 2); + if (!retval) + return NULL; + hex_digest = PyString_AsString(retval); + if (!hex_digest) { + Py_DECREF(retval); + return NULL; + } + + /* Make hex version of the digest */ + for(i=j=0; idigestsize; i++) { + char c; + c = (digest[i] >> 4) & 0xf; + c = (c>9) ? c+'a'-10 : c + '0'; + hex_digest[j++] = c; + c = (digest[i] & 0xf); + c = (c>9) ? c+'a'-10 : c + '0'; + hex_digest[j++] = c; + } + return retval; +} + +PyDoc_STRVAR(SHA256_update__doc__, +"Update this hash object's state with the provided string."); + +static PyObject * +SHA256_update(SHAobject *self, PyObject *args) +{ + unsigned char *cp; + int len; + + if (!PyArg_ParseTuple(args, "s#:update", &cp, &len)) + return NULL; + + sha_update(self, cp, len); + + Py_INCREF(Py_None); + return Py_None; +} + +static PyMethodDef SHA_methods[] = { + {"copy", (PyCFunction)SHA256_copy, METH_NOARGS, SHA256_copy__doc__}, + {"digest", (PyCFunction)SHA256_digest, METH_NOARGS, SHA256_digest__doc__}, + {"hexdigest", (PyCFunction)SHA256_hexdigest, METH_NOARGS, SHA256_hexdigest__doc__}, + {"update", (PyCFunction)SHA256_update, METH_VARARGS, SHA256_update__doc__}, + {NULL, NULL} /* sentinel */ +}; + +static PyObject * +SHA256_get_block_size(PyObject *self, void *closure) +{ + return PyInt_FromLong(SHA_BLOCKSIZE); +} + +static PyObject * +SHA256_get_name(PyObject *self, void *closure) +{ + if (((SHAobject *)self)->digestsize == 32) + return PyString_FromStringAndSize("SHA256", 6); + else + return PyString_FromStringAndSize("SHA224", 6); +} + +static PyGetSetDef SHA_getseters[] = { + {"block_size", + (getter)SHA256_get_block_size, NULL, + NULL, + NULL}, + {"name", + (getter)SHA256_get_name, NULL, + NULL, + NULL}, + {NULL} /* Sentinel */ +}; + +static PyMemberDef SHA_members[] = { + {"digest_size", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL}, + /* the old md5 and sha modules support 'digest_size' as in PEP 247. + * the old sha module also supported 'digestsize'. ugh. */ + {"digestsize", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL}, + {NULL} /* Sentinel */ +}; + +static PyTypeObject SHA224type = { + PyVarObject_HEAD_INIT(NULL, 0) + "_sha256.sha224", /*tp_name*/ + sizeof(SHAobject), /*tp_size*/ + 0, /*tp_itemsize*/ + /* methods */ + SHA_dealloc, /*tp_dealloc*/ + 0, /*tp_print*/ + 0, /*tp_getattr*/ + 0, /*tp_setattr*/ + 0, /*tp_compare*/ + 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*/ + 0, /*tp_doc*/ + 0, /*tp_traverse*/ + 0, /*tp_clear*/ + 0, /*tp_richcompare*/ + 0, /*tp_weaklistoffset*/ + 0, /*tp_iter*/ + 0, /*tp_iternext*/ + SHA_methods, /* tp_methods */ + SHA_members, /* tp_members */ + SHA_getseters, /* tp_getset */ +}; + +static PyTypeObject SHA256type = { + PyVarObject_HEAD_INIT(NULL, 0) + "_sha256.sha256", /*tp_name*/ + sizeof(SHAobject), /*tp_size*/ + 0, /*tp_itemsize*/ + /* methods */ + SHA_dealloc, /*tp_dealloc*/ + 0, /*tp_print*/ + 0, /*tp_getattr*/ + 0, /*tp_setattr*/ + 0, /*tp_compare*/ + 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*/ + 0, /*tp_doc*/ + 0, /*tp_traverse*/ + 0, /*tp_clear*/ + 0, /*tp_richcompare*/ + 0, /*tp_weaklistoffset*/ + 0, /*tp_iter*/ + 0, /*tp_iternext*/ + SHA_methods, /* tp_methods */ + SHA_members, /* tp_members */ + SHA_getseters, /* tp_getset */ +}; + + +/* The single module-level function: new() */ + +PyDoc_STRVAR(SHA256_new__doc__, +"Return a new SHA-256 hash object; optionally initialized with a string."); + +static PyObject * +SHA256_new(PyObject *self, PyObject *args, PyObject *kwdict) +{ + static char *kwlist[] = {"string", NULL}; + SHAobject *new; + unsigned char *cp = NULL; + int len; + + if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist, + &cp, &len)) { + return NULL; + } + + if ((new = newSHA256object()) == NULL) + return NULL; + + sha_init(new); + + if (PyErr_Occurred()) { + Py_DECREF(new); + return NULL; + } + if (cp) + sha_update(new, cp, len); + + return (PyObject *)new; +} + +PyDoc_STRVAR(SHA224_new__doc__, +"Return a new SHA-224 hash object; optionally initialized with a string."); + +static PyObject * +SHA224_new(PyObject *self, PyObject *args, PyObject *kwdict) +{ + static char *kwlist[] = {"string", NULL}; + SHAobject *new; + unsigned char *cp = NULL; + int len; + + if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist, + &cp, &len)) { + return NULL; + } + + if ((new = newSHA224object()) == NULL) + return NULL; + + sha224_init(new); + + if (PyErr_Occurred()) { + Py_DECREF(new); + return NULL; + } + if (cp) + sha_update(new, cp, len); + + return (PyObject *)new; +} + + +/* List of functions exported by this module */ + +static struct PyMethodDef SHA_functions[] = { + {"sha256", (PyCFunction)SHA256_new, METH_VARARGS|METH_KEYWORDS, SHA256_new__doc__}, + {"sha224", (PyCFunction)SHA224_new, METH_VARARGS|METH_KEYWORDS, SHA224_new__doc__}, + {NULL, NULL} /* Sentinel */ +}; + + +/* Initialize this module. */ + +#define insint(n,v) { PyModule_AddIntConstant(m,n,v); } + +PyMODINIT_FUNC +init_sha256(void) +{ + PyObject *m; + + Py_TYPE(&SHA224type) = &PyType_Type; + if (PyType_Ready(&SHA224type) < 0) + return; + Py_TYPE(&SHA256type) = &PyType_Type; + if (PyType_Ready(&SHA256type) < 0) + return; + m = Py_InitModule("_sha256", SHA_functions); + if (m == NULL) + return; +}