Adds stand alone _md5 and _sha1 modules for use by hashlib on systems
when the OpenSSL library is either not present or not found by setup.py. These are derived from the public domain libtomcrypt (libtom.org) just like the existing sha256 and sha512 modules.
This commit is contained in:
Gregory P. Smith
parent
b3b4dbef20
commit
2f21eb3a15
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@ -10,8 +10,8 @@ new(name, data=b'') - returns a new hash object implementing the
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given hash function; initializing the hash
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using the given binary data.
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Named constructor functions are also available, these are much faster
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than using new():
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Named constructor functions are also available, these are faster
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than using new(name):
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md5(), sha1(), sha224(), sha256(), sha384(), and sha512()
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@ -22,14 +22,13 @@ Choose your hash function wisely. Some have known collision weaknesses.
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sha384 and sha512 will be slow on 32 bit platforms.
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Hash objects have these methods:
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- update(arg): Update the hash object with the string arg. Repeated calls
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- update(arg): Update the hash object with the bytes in arg. Repeated calls
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are equivalent to a single call with the concatenation of all
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the arguments.
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- digest(): Return the digest of the strings passed to the update() method
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so far. This may contain non-ASCII characters, including
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NUL bytes.
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- hexdigest(): Like digest() except the digest is returned as a string of
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double length, containing only hexadecimal digits.
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- digest(): Return the digest of the bytes passed to the update() method
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so far.
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- hexdigest(): Like digest() except the digest is returned as a unicode
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object of double length, containing only hexadecimal digits.
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- copy(): Return a copy (clone) of the hash object. This can be used to
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efficiently compute the digests of strings that share a common
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initial substring.
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@ -54,11 +53,11 @@ More condensed:
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def __get_builtin_constructor(name):
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if name in ('SHA1', 'sha1'):
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import _sha
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return _sha.new
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import _sha1
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return _sha1.sha1
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elif name in ('MD5', 'md5'):
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import _md5
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return _md5.new
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return _md5.md5
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elif name in ('SHA256', 'sha256', 'SHA224', 'sha224'):
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import _sha256
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bs = name[3:]
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@ -78,7 +77,7 @@ def __get_builtin_constructor(name):
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def __py_new(name, data=b''):
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"""new(name, data='') - Return a new hashing object using the named algorithm;
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"""new(name, data=b'') - Return a new hashing object using the named algorithm;
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optionally initialized with data (which must be bytes).
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"""
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return __get_builtin_constructor(name)(data)
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@ -0,0 +1,561 @@
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/* MD5 module */
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/* This module provides an interface to the MD5 algorithm */
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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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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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Copyright (C) 2005-2007 Gregory P. Smith (greg@krypto.org)
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Licensed to PSF under a Contributor Agreement.
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*/
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/* MD5 objects */
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#include "Python.h"
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/* Some useful types */
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#if SIZEOF_INT == 4
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typedef unsigned int MD5_INT32; /* 32-bit integer */
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typedef PY_LONG_LONG MD5_INT64; /* 64-bit integer */
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#else
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/* not defined. compilation will die. */
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#endif
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/* The MD5 block size and message digest sizes, in bytes */
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#define MD5_BLOCKSIZE 64
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#define MD5_DIGESTSIZE 16
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/* The structure for storing MD5 info */
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struct md5_state {
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MD5_INT64 length;
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MD5_INT32 state[4], curlen;
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unsigned char buf[MD5_BLOCKSIZE];
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};
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typedef struct {
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PyObject_HEAD
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struct md5_state hash_state;
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} MD5object;
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/* ------------------------------------------------------------------------
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*
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* This code for the MD5 algorithm was noted as public domain. The
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* original headers are pasted below.
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*
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* Several changes have been made to make it more compatible with the
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* Python environment and desired interface.
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*
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*/
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
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*
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* LibTomCrypt is a library that provides various cryptographic
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* algorithms in a highly modular and flexible manner.
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*
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* The library is free for all purposes without any express
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* guarantee it works.
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*
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* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
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*/
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/* rotate the hard way (platform optimizations could be done) */
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#define ROLc(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
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/* Endian Neutral macros that work on all platforms */
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#define STORE32L(x, y) \
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{ (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \
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(y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }
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#define LOAD32L(x, y) \
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{ x = ((unsigned long)((y)[3] & 255)<<24) | \
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((unsigned long)((y)[2] & 255)<<16) | \
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((unsigned long)((y)[1] & 255)<<8) | \
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((unsigned long)((y)[0] & 255)); }
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#define STORE64L(x, y) \
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{ (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \
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(y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \
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(y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \
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(y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }
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#ifndef MIN
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#define MIN(x, y) ( ((x)<(y))?(x):(y) )
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#endif
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/* MD5 macros */
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#define F(x,y,z) (z ^ (x & (y ^ z)))
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#define G(x,y,z) (y ^ (z & (y ^ x)))
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#define H(x,y,z) (x^y^z)
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#define I(x,y,z) (y^(x|(~z)))
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#define FF(a,b,c,d,M,s,t) \
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a = (a + F(b,c,d) + M + t); a = ROLc(a, s) + b;
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#define GG(a,b,c,d,M,s,t) \
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a = (a + G(b,c,d) + M + t); a = ROLc(a, s) + b;
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#define HH(a,b,c,d,M,s,t) \
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a = (a + H(b,c,d) + M + t); a = ROLc(a, s) + b;
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#define II(a,b,c,d,M,s,t) \
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a = (a + I(b,c,d) + M + t); a = ROLc(a, s) + b;
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static void md5_compress(struct md5_state *md5, unsigned char *buf)
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{
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MD5_INT32 i, W[16], a, b, c, d;
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assert(md5 != NULL);
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assert(buf != NULL);
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/* copy the state into 512-bits into W[0..15] */
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for (i = 0; i < 16; i++) {
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LOAD32L(W[i], buf + (4*i));
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}
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/* copy state */
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a = md5->state[0];
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b = md5->state[1];
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c = md5->state[2];
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d = md5->state[3];
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FF(a,b,c,d,W[0],7,0xd76aa478UL)
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FF(d,a,b,c,W[1],12,0xe8c7b756UL)
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FF(c,d,a,b,W[2],17,0x242070dbUL)
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FF(b,c,d,a,W[3],22,0xc1bdceeeUL)
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FF(a,b,c,d,W[4],7,0xf57c0fafUL)
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FF(d,a,b,c,W[5],12,0x4787c62aUL)
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FF(c,d,a,b,W[6],17,0xa8304613UL)
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FF(b,c,d,a,W[7],22,0xfd469501UL)
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FF(a,b,c,d,W[8],7,0x698098d8UL)
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FF(d,a,b,c,W[9],12,0x8b44f7afUL)
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FF(c,d,a,b,W[10],17,0xffff5bb1UL)
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FF(b,c,d,a,W[11],22,0x895cd7beUL)
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FF(a,b,c,d,W[12],7,0x6b901122UL)
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FF(d,a,b,c,W[13],12,0xfd987193UL)
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FF(c,d,a,b,W[14],17,0xa679438eUL)
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FF(b,c,d,a,W[15],22,0x49b40821UL)
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GG(a,b,c,d,W[1],5,0xf61e2562UL)
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GG(d,a,b,c,W[6],9,0xc040b340UL)
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GG(c,d,a,b,W[11],14,0x265e5a51UL)
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GG(b,c,d,a,W[0],20,0xe9b6c7aaUL)
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GG(a,b,c,d,W[5],5,0xd62f105dUL)
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GG(d,a,b,c,W[10],9,0x02441453UL)
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GG(c,d,a,b,W[15],14,0xd8a1e681UL)
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GG(b,c,d,a,W[4],20,0xe7d3fbc8UL)
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GG(a,b,c,d,W[9],5,0x21e1cde6UL)
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GG(d,a,b,c,W[14],9,0xc33707d6UL)
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GG(c,d,a,b,W[3],14,0xf4d50d87UL)
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GG(b,c,d,a,W[8],20,0x455a14edUL)
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GG(a,b,c,d,W[13],5,0xa9e3e905UL)
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GG(d,a,b,c,W[2],9,0xfcefa3f8UL)
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GG(c,d,a,b,W[7],14,0x676f02d9UL)
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GG(b,c,d,a,W[12],20,0x8d2a4c8aUL)
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HH(a,b,c,d,W[5],4,0xfffa3942UL)
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HH(d,a,b,c,W[8],11,0x8771f681UL)
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HH(c,d,a,b,W[11],16,0x6d9d6122UL)
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HH(b,c,d,a,W[14],23,0xfde5380cUL)
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HH(a,b,c,d,W[1],4,0xa4beea44UL)
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HH(d,a,b,c,W[4],11,0x4bdecfa9UL)
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HH(c,d,a,b,W[7],16,0xf6bb4b60UL)
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HH(b,c,d,a,W[10],23,0xbebfbc70UL)
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HH(a,b,c,d,W[13],4,0x289b7ec6UL)
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HH(d,a,b,c,W[0],11,0xeaa127faUL)
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HH(c,d,a,b,W[3],16,0xd4ef3085UL)
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HH(b,c,d,a,W[6],23,0x04881d05UL)
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HH(a,b,c,d,W[9],4,0xd9d4d039UL)
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HH(d,a,b,c,W[12],11,0xe6db99e5UL)
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HH(c,d,a,b,W[15],16,0x1fa27cf8UL)
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HH(b,c,d,a,W[2],23,0xc4ac5665UL)
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II(a,b,c,d,W[0],6,0xf4292244UL)
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II(d,a,b,c,W[7],10,0x432aff97UL)
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II(c,d,a,b,W[14],15,0xab9423a7UL)
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II(b,c,d,a,W[5],21,0xfc93a039UL)
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II(a,b,c,d,W[12],6,0x655b59c3UL)
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II(d,a,b,c,W[3],10,0x8f0ccc92UL)
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II(c,d,a,b,W[10],15,0xffeff47dUL)
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II(b,c,d,a,W[1],21,0x85845dd1UL)
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II(a,b,c,d,W[8],6,0x6fa87e4fUL)
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II(d,a,b,c,W[15],10,0xfe2ce6e0UL)
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II(c,d,a,b,W[6],15,0xa3014314UL)
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II(b,c,d,a,W[13],21,0x4e0811a1UL)
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II(a,b,c,d,W[4],6,0xf7537e82UL)
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II(d,a,b,c,W[11],10,0xbd3af235UL)
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II(c,d,a,b,W[2],15,0x2ad7d2bbUL)
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II(b,c,d,a,W[9],21,0xeb86d391UL)
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md5->state[0] = md5->state[0] + a;
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md5->state[1] = md5->state[1] + b;
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md5->state[2] = md5->state[2] + c;
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md5->state[3] = md5->state[3] + d;
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}
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/**
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Initialize the hash state
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@param sha1 The hash state you wish to initialize
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*/
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void md5_init(struct md5_state *md5)
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{
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assert(md5 != NULL);
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md5->state[0] = 0x67452301UL;
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md5->state[1] = 0xefcdab89UL;
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md5->state[2] = 0x98badcfeUL;
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md5->state[3] = 0x10325476UL;
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md5->curlen = 0;
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md5->length = 0;
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}
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/**
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Process a block of memory though the hash
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@param sha1 The hash state
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@param in The data to hash
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@param inlen The length of the data (octets)
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*/
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void md5_process(struct md5_state *md5,
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const unsigned char *in, unsigned long inlen)
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{
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unsigned long n;
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assert(md5 != NULL);
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assert(in != NULL);
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assert(md5->curlen <= sizeof(md5->buf));
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while (inlen > 0) {
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if (md5->curlen == 0 && inlen >= MD5_BLOCKSIZE) {
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md5_compress(md5, (unsigned char *)in);
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md5->length += MD5_BLOCKSIZE * 8;
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in += MD5_BLOCKSIZE;
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inlen -= MD5_BLOCKSIZE;
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} else {
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n = MIN(inlen, (MD5_BLOCKSIZE - md5->curlen));
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memcpy(md5->buf + md5->curlen, in, (size_t)n);
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md5->curlen += n;
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in += n;
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inlen -= n;
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if (md5->curlen == MD5_BLOCKSIZE) {
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md5_compress(md5, md5->buf);
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md5->length += 8*MD5_BLOCKSIZE;
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md5->curlen = 0;
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}
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}
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}
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}
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/**
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Terminate the hash to get the digest
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@param sha1 The hash state
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@param out [out] The destination of the hash (16 bytes)
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*/
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void md5_done(struct md5_state *md5, unsigned char *out)
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{
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int i;
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assert(md5 != NULL);
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assert(out != NULL);
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assert(md5->curlen < sizeof(md5->buf));
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/* increase the length of the message */
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md5->length += md5->curlen * 8;
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/* append the '1' bit */
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md5->buf[md5->curlen++] = (unsigned char)0x80;
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/* if the length is currently above 56 bytes we append zeros
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* then compress. Then we can fall back to padding zeros and length
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* encoding like normal.
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*/
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if (md5->curlen > 56) {
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while (md5->curlen < 64) {
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md5->buf[md5->curlen++] = (unsigned char)0;
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}
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md5_compress(md5, md5->buf);
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md5->curlen = 0;
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}
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/* pad upto 56 bytes of zeroes */
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while (md5->curlen < 56) {
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md5->buf[md5->curlen++] = (unsigned char)0;
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}
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/* store length */
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STORE64L(md5->length, md5->buf+56);
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md5_compress(md5, md5->buf);
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/* copy output */
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for (i = 0; i < 4; i++) {
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STORE32L(md5->state[i], out+(4*i));
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}
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}
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/* .Source: /cvs/libtom/libtomcrypt/src/hashes/md5.c,v $ */
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/* .Revision: 1.10 $ */
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/* .Date: 2007/05/12 14:25:28 $ */
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/*
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* End of copied MD5 code.
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*
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* ------------------------------------------------------------------------
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*/
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static PyTypeObject MD5type;
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static MD5object *
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newMD5object(void)
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{
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return (MD5object *)PyObject_New(MD5object, &MD5type);
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}
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/* Internal methods for a hash object */
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static void
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MD5_dealloc(PyObject *ptr)
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{
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PyObject_Del(ptr);
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}
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/* External methods for a hash object */
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PyDoc_STRVAR(MD5_copy__doc__, "Return a copy of the hash object.");
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static PyObject *
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MD5_copy(MD5object *self, PyObject *unused)
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{
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MD5object *newobj;
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if (Py_Type(self) == &MD5type) {
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if ( (newobj = newMD5object())==NULL)
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return NULL;
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} else {
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if ( (newobj = newMD5object())==NULL)
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return NULL;
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}
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newobj->hash_state = self->hash_state;
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return (PyObject *)newobj;
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}
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PyDoc_STRVAR(MD5_digest__doc__,
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"Return the digest value as a string of binary data.");
|
||||
|
||||
static PyObject *
|
||||
MD5_digest(MD5object *self, PyObject *unused)
|
||||
{
|
||||
unsigned char digest[MD5_DIGESTSIZE];
|
||||
struct md5_state temp;
|
||||
|
||||
temp = self->hash_state;
|
||||
md5_done(&temp, digest);
|
||||
return PyBytes_FromStringAndSize((const char *)digest, MD5_DIGESTSIZE);
|
||||
}
|
||||
|
||||
PyDoc_STRVAR(MD5_hexdigest__doc__,
|
||||
"Return the digest value as a string of hexadecimal digits.");
|
||||
|
||||
static PyObject *
|
||||
MD5_hexdigest(MD5object *self, PyObject *unused)
|
||||
{
|
||||
unsigned char digest[MD5_DIGESTSIZE];
|
||||
struct md5_state temp;
|
||||
PyObject *retval;
|
||||
Py_UNICODE *hex_digest;
|
||||
int i, j;
|
||||
|
||||
/* Get the raw (binary) digest value */
|
||||
temp = self->hash_state;
|
||||
md5_done(&temp, digest);
|
||||
|
||||
/* Create a new string */
|
||||
retval = PyUnicode_FromStringAndSize(NULL, MD5_DIGESTSIZE * 2);
|
||||
if (!retval)
|
||||
return NULL;
|
||||
hex_digest = PyUnicode_AS_UNICODE(retval);
|
||||
if (!hex_digest) {
|
||||
Py_DECREF(retval);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Make hex version of the digest */
|
||||
for(i=j=0; i<MD5_DIGESTSIZE; 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(MD5_update__doc__,
|
||||
"Update this hash object's state with the provided string.");
|
||||
|
||||
static PyObject *
|
||||
MD5_update(MD5object *self, PyObject *args)
|
||||
{
|
||||
unsigned char *cp;
|
||||
int len;
|
||||
|
||||
if (!PyArg_ParseTuple(args, "s#:update", &cp, &len))
|
||||
return NULL;
|
||||
|
||||
md5_process(&self->hash_state, cp, len);
|
||||
|
||||
Py_INCREF(Py_None);
|
||||
return Py_None;
|
||||
}
|
||||
|
||||
static PyMethodDef MD5_methods[] = {
|
||||
{"copy", (PyCFunction)MD5_copy, METH_NOARGS, MD5_copy__doc__},
|
||||
{"digest", (PyCFunction)MD5_digest, METH_NOARGS, MD5_digest__doc__},
|
||||
{"hexdigest", (PyCFunction)MD5_hexdigest, METH_NOARGS, MD5_hexdigest__doc__},
|
||||
{"update", (PyCFunction)MD5_update, METH_VARARGS, MD5_update__doc__},
|
||||
{NULL, NULL} /* sentinel */
|
||||
};
|
||||
|
||||
static PyObject *
|
||||
MD5_get_block_size(PyObject *self, void *closure)
|
||||
{
|
||||
return PyInt_FromLong(MD5_BLOCKSIZE);
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
MD5_get_name(PyObject *self, void *closure)
|
||||
{
|
||||
return PyUnicode_FromStringAndSize("MD5", 3);
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
md5_get_digest_size(PyObject *self, void *closure)
|
||||
{
|
||||
return PyInt_FromLong(MD5_DIGESTSIZE);
|
||||
}
|
||||
|
||||
|
||||
static PyGetSetDef MD5_getseters[] = {
|
||||
{"block_size",
|
||||
(getter)MD5_get_block_size, NULL,
|
||||
NULL,
|
||||
NULL},
|
||||
{"name",
|
||||
(getter)MD5_get_name, NULL,
|
||||
NULL,
|
||||
NULL},
|
||||
{"digest_size",
|
||||
(getter)md5_get_digest_size, NULL,
|
||||
NULL,
|
||||
NULL},
|
||||
{NULL} /* Sentinel */
|
||||
};
|
||||
|
||||
static PyTypeObject MD5type = {
|
||||
PyVarObject_HEAD_INIT(NULL, 0)
|
||||
"_md5.md5", /*tp_name*/
|
||||
sizeof(MD5object), /*tp_size*/
|
||||
0, /*tp_itemsize*/
|
||||
/* methods */
|
||||
MD5_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*/
|
||||
MD5_methods, /* tp_methods */
|
||||
NULL, /* tp_members */
|
||||
MD5_getseters, /* tp_getset */
|
||||
};
|
||||
|
||||
|
||||
/* The single module-level function: new() */
|
||||
|
||||
PyDoc_STRVAR(MD5_new__doc__,
|
||||
"Return a new MD5 hash object; optionally initialized with a string.");
|
||||
|
||||
static PyObject *
|
||||
MD5_new(PyObject *self, PyObject *args, PyObject *kwdict)
|
||||
{
|
||||
static char *kwlist[] = {"string", NULL};
|
||||
MD5object *new;
|
||||
unsigned char *cp = NULL;
|
||||
int len;
|
||||
|
||||
if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist,
|
||||
&cp, &len)) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if ((new = newMD5object()) == NULL)
|
||||
return NULL;
|
||||
|
||||
md5_init(&new->hash_state);
|
||||
|
||||
if (PyErr_Occurred()) {
|
||||
Py_DECREF(new);
|
||||
return NULL;
|
||||
}
|
||||
if (cp)
|
||||
md5_process(&new->hash_state, cp, len);
|
||||
|
||||
return (PyObject *)new;
|
||||
}
|
||||
|
||||
|
||||
/* List of functions exported by this module */
|
||||
|
||||
static struct PyMethodDef MD5_functions[] = {
|
||||
{"md5", (PyCFunction)MD5_new, METH_VARARGS|METH_KEYWORDS, MD5_new__doc__},
|
||||
{NULL, NULL} /* Sentinel */
|
||||
};
|
||||
|
||||
|
||||
/* Initialize this module. */
|
||||
|
||||
#define insint(n,v) { PyModule_AddIntConstant(m,n,v); }
|
||||
|
||||
PyMODINIT_FUNC
|
||||
init_md5(void)
|
||||
{
|
||||
PyObject *m;
|
||||
|
||||
Py_Type(&MD5type) = &PyType_Type;
|
||||
if (PyType_Ready(&MD5type) < 0)
|
||||
return;
|
||||
m = Py_InitModule("_md5", MD5_functions);
|
||||
if (m == NULL)
|
||||
return;
|
||||
}
|
||||
|
|
@ -0,0 +1,537 @@
|
|||
/* SHA1 module */
|
||||
|
||||
/* This module provides an interface to the SHA1 algorithm */
|
||||
|
||||
/* 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) 2005-2007 Gregory P. Smith (greg@krypto.org)
|
||||
Licensed to PSF under a Contributor Agreement.
|
||||
|
||||
*/
|
||||
|
||||
/* SHA1 objects */
|
||||
|
||||
#include "Python.h"
|
||||
|
||||
|
||||
/* Some useful types */
|
||||
|
||||
#if SIZEOF_INT == 4
|
||||
typedef unsigned int SHA1_INT32; /* 32-bit integer */
|
||||
typedef PY_LONG_LONG SHA1_INT64; /* 64-bit integer */
|
||||
#else
|
||||
/* not defined. compilation will die. */
|
||||
#endif
|
||||
|
||||
/* The SHA1 block size and message digest sizes, in bytes */
|
||||
|
||||
#define SHA1_BLOCKSIZE 64
|
||||
#define SHA1_DIGESTSIZE 20
|
||||
|
||||
/* The structure for storing SHA1 info */
|
||||
|
||||
struct sha1_state {
|
||||
SHA1_INT64 length;
|
||||
SHA1_INT32 state[5], curlen;
|
||||
unsigned char buf[SHA1_BLOCKSIZE];
|
||||
};
|
||||
|
||||
typedef struct {
|
||||
PyObject_HEAD
|
||||
|
||||
struct sha1_state hash_state;
|
||||
} SHA1object;
|
||||
|
||||
|
||||
/* ------------------------------------------------------------------------
|
||||
*
|
||||
* This code for the SHA1 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
|
||||
* guarantee it works.
|
||||
*
|
||||
* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
|
||||
*/
|
||||
|
||||
/* rotate the hard way (platform optimizations could be done) */
|
||||
#define ROL(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
|
||||
#define ROLc(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
|
||||
|
||||
/* Endian Neutral macros that work on all platforms */
|
||||
|
||||
#define STORE32H(x, y) \
|
||||
{ (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255); \
|
||||
(y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }
|
||||
|
||||
#define LOAD32H(x, y) \
|
||||
{ x = ((unsigned long)((y)[0] & 255)<<24) | \
|
||||
((unsigned long)((y)[1] & 255)<<16) | \
|
||||
((unsigned long)((y)[2] & 255)<<8) | \
|
||||
((unsigned long)((y)[3] & 255)); }
|
||||
|
||||
#define STORE64H(x, y) \
|
||||
{ (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \
|
||||
(y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \
|
||||
(y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \
|
||||
(y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }
|
||||
|
||||
#ifndef MIN
|
||||
#define MIN(x, y) ( ((x)<(y))?(x):(y) )
|
||||
#endif
|
||||
|
||||
|
||||
/* SHA1 macros */
|
||||
|
||||
#define F0(x,y,z) (z ^ (x & (y ^ z)))
|
||||
#define F1(x,y,z) (x ^ y ^ z)
|
||||
#define F2(x,y,z) ((x & y) | (z & (x | y)))
|
||||
#define F3(x,y,z) (x ^ y ^ z)
|
||||
|
||||
static void sha1_compress(struct sha1_state *sha1, unsigned char *buf)
|
||||
{
|
||||
SHA1_INT32 a,b,c,d,e,W[80],i;
|
||||
|
||||
/* copy the state into 512-bits into W[0..15] */
|
||||
for (i = 0; i < 16; i++) {
|
||||
LOAD32H(W[i], buf + (4*i));
|
||||
}
|
||||
|
||||
/* copy state */
|
||||
a = sha1->state[0];
|
||||
b = sha1->state[1];
|
||||
c = sha1->state[2];
|
||||
d = sha1->state[3];
|
||||
e = sha1->state[4];
|
||||
|
||||
/* expand it */
|
||||
for (i = 16; i < 80; i++) {
|
||||
W[i] = ROL(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1);
|
||||
}
|
||||
|
||||
/* compress */
|
||||
/* round one */
|
||||
#define FF0(a,b,c,d,e,i) e = (ROLc(a, 5) + F0(b,c,d) + e + W[i] + 0x5a827999UL); b = ROLc(b, 30);
|
||||
#define FF1(a,b,c,d,e,i) e = (ROLc(a, 5) + F1(b,c,d) + e + W[i] + 0x6ed9eba1UL); b = ROLc(b, 30);
|
||||
#define FF2(a,b,c,d,e,i) e = (ROLc(a, 5) + F2(b,c,d) + e + W[i] + 0x8f1bbcdcUL); b = ROLc(b, 30);
|
||||
#define FF3(a,b,c,d,e,i) e = (ROLc(a, 5) + F3(b,c,d) + e + W[i] + 0xca62c1d6UL); b = ROLc(b, 30);
|
||||
|
||||
for (i = 0; i < 20; ) {
|
||||
FF0(a,b,c,d,e,i++);
|
||||
FF0(e,a,b,c,d,i++);
|
||||
FF0(d,e,a,b,c,i++);
|
||||
FF0(c,d,e,a,b,i++);
|
||||
FF0(b,c,d,e,a,i++);
|
||||
}
|
||||
|
||||
/* round two */
|
||||
for (; i < 40; ) {
|
||||
FF1(a,b,c,d,e,i++);
|
||||
FF1(e,a,b,c,d,i++);
|
||||
FF1(d,e,a,b,c,i++);
|
||||
FF1(c,d,e,a,b,i++);
|
||||
FF1(b,c,d,e,a,i++);
|
||||
}
|
||||
|
||||
/* round three */
|
||||
for (; i < 60; ) {
|
||||
FF2(a,b,c,d,e,i++);
|
||||
FF2(e,a,b,c,d,i++);
|
||||
FF2(d,e,a,b,c,i++);
|
||||
FF2(c,d,e,a,b,i++);
|
||||
FF2(b,c,d,e,a,i++);
|
||||
}
|
||||
|
||||
/* round four */
|
||||
for (; i < 80; ) {
|
||||
FF3(a,b,c,d,e,i++);
|
||||
FF3(e,a,b,c,d,i++);
|
||||
FF3(d,e,a,b,c,i++);
|
||||
FF3(c,d,e,a,b,i++);
|
||||
FF3(b,c,d,e,a,i++);
|
||||
}
|
||||
|
||||
#undef FF0
|
||||
#undef FF1
|
||||
#undef FF2
|
||||
#undef FF3
|
||||
|
||||
/* store */
|
||||
sha1->state[0] = sha1->state[0] + a;
|
||||
sha1->state[1] = sha1->state[1] + b;
|
||||
sha1->state[2] = sha1->state[2] + c;
|
||||
sha1->state[3] = sha1->state[3] + d;
|
||||
sha1->state[4] = sha1->state[4] + e;
|
||||
}
|
||||
|
||||
/**
|
||||
Initialize the hash state
|
||||
@param sha1 The hash state you wish to initialize
|
||||
*/
|
||||
void sha1_init(struct sha1_state *sha1)
|
||||
{
|
||||
assert(sha1 != NULL);
|
||||
sha1->state[0] = 0x67452301UL;
|
||||
sha1->state[1] = 0xefcdab89UL;
|
||||
sha1->state[2] = 0x98badcfeUL;
|
||||
sha1->state[3] = 0x10325476UL;
|
||||
sha1->state[4] = 0xc3d2e1f0UL;
|
||||
sha1->curlen = 0;
|
||||
sha1->length = 0;
|
||||
}
|
||||
|
||||
/**
|
||||
Process a block of memory though the hash
|
||||
@param sha1 The hash state
|
||||
@param in The data to hash
|
||||
@param inlen The length of the data (octets)
|
||||
*/
|
||||
void sha1_process(struct sha1_state *sha1,
|
||||
const unsigned char *in, unsigned long inlen)
|
||||
{
|
||||
unsigned long n;
|
||||
|
||||
assert(sha1 != NULL);
|
||||
assert(in != NULL);
|
||||
assert(sha1->curlen <= sizeof(sha1->buf));
|
||||
|
||||
while (inlen > 0) {
|
||||
if (sha1->curlen == 0 && inlen >= SHA1_BLOCKSIZE) {
|
||||
sha1_compress(sha1, (unsigned char *)in);
|
||||
sha1->length += SHA1_BLOCKSIZE * 8;
|
||||
in += SHA1_BLOCKSIZE;
|
||||
inlen -= SHA1_BLOCKSIZE;
|
||||
} else {
|
||||
n = MIN(inlen, (SHA1_BLOCKSIZE - sha1->curlen));
|
||||
memcpy(sha1->buf + sha1->curlen, in, (size_t)n);
|
||||
sha1->curlen += n;
|
||||
in += n;
|
||||
inlen -= n;
|
||||
if (sha1->curlen == SHA1_BLOCKSIZE) {
|
||||
sha1_compress(sha1, sha1->buf);
|
||||
sha1->length += 8*SHA1_BLOCKSIZE;
|
||||
sha1->curlen = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
Terminate the hash to get the digest
|
||||
@param sha1 The hash state
|
||||
@param out [out] The destination of the hash (20 bytes)
|
||||
*/
|
||||
void sha1_done(struct sha1_state *sha1, unsigned char *out)
|
||||
{
|
||||
int i;
|
||||
|
||||
assert(sha1 != NULL);
|
||||
assert(out != NULL);
|
||||
assert(sha1->curlen < sizeof(sha1->buf));
|
||||
|
||||
/* increase the length of the message */
|
||||
sha1->length += sha1->curlen * 8;
|
||||
|
||||
/* append the '1' bit */
|
||||
sha1->buf[sha1->curlen++] = (unsigned char)0x80;
|
||||
|
||||
/* if the length is currently above 56 bytes we append zeros
|
||||
* then compress. Then we can fall back to padding zeros and length
|
||||
* encoding like normal.
|
||||
*/
|
||||
if (sha1->curlen > 56) {
|
||||
while (sha1->curlen < 64) {
|
||||
sha1->buf[sha1->curlen++] = (unsigned char)0;
|
||||
}
|
||||
sha1_compress(sha1, sha1->buf);
|
||||
sha1->curlen = 0;
|
||||
}
|
||||
|
||||
/* pad upto 56 bytes of zeroes */
|
||||
while (sha1->curlen < 56) {
|
||||
sha1->buf[sha1->curlen++] = (unsigned char)0;
|
||||
}
|
||||
|
||||
/* store length */
|
||||
STORE64H(sha1->length, sha1->buf+56);
|
||||
sha1_compress(sha1, sha1->buf);
|
||||
|
||||
/* copy output */
|
||||
for (i = 0; i < 5; i++) {
|
||||
STORE32H(sha1->state[i], out+(4*i));
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* .Source: /cvs/libtom/libtomcrypt/src/hashes/sha1.c,v $ */
|
||||
/* .Revision: 1.10 $ */
|
||||
/* .Date: 2007/05/12 14:25:28 $ */
|
||||
|
||||
/*
|
||||
* End of copied SHA1 code.
|
||||
*
|
||||
* ------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
static PyTypeObject SHA1type;
|
||||
|
||||
|
||||
static SHA1object *
|
||||
newSHA1object(void)
|
||||
{
|
||||
return (SHA1object *)PyObject_New(SHA1object, &SHA1type);
|
||||
}
|
||||
|
||||
|
||||
/* Internal methods for a hash object */
|
||||
|
||||
static void
|
||||
SHA1_dealloc(PyObject *ptr)
|
||||
{
|
||||
PyObject_Del(ptr);
|
||||
}
|
||||
|
||||
|
||||
/* External methods for a hash object */
|
||||
|
||||
PyDoc_STRVAR(SHA1_copy__doc__, "Return a copy of the hash object.");
|
||||
|
||||
static PyObject *
|
||||
SHA1_copy(SHA1object *self, PyObject *unused)
|
||||
{
|
||||
SHA1object *newobj;
|
||||
|
||||
if (Py_Type(self) == &SHA1type) {
|
||||
if ( (newobj = newSHA1object())==NULL)
|
||||
return NULL;
|
||||
} else {
|
||||
if ( (newobj = newSHA1object())==NULL)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
newobj->hash_state = self->hash_state;
|
||||
return (PyObject *)newobj;
|
||||
}
|
||||
|
||||
PyDoc_STRVAR(SHA1_digest__doc__,
|
||||
"Return the digest value as a string of binary data.");
|
||||
|
||||
static PyObject *
|
||||
SHA1_digest(SHA1object *self, PyObject *unused)
|
||||
{
|
||||
unsigned char digest[SHA1_DIGESTSIZE];
|
||||
struct sha1_state temp;
|
||||
|
||||
temp = self->hash_state;
|
||||
sha1_done(&temp, digest);
|
||||
return PyBytes_FromStringAndSize((const char *)digest, SHA1_DIGESTSIZE);
|
||||
}
|
||||
|
||||
PyDoc_STRVAR(SHA1_hexdigest__doc__,
|
||||
"Return the digest value as a string of hexadecimal digits.");
|
||||
|
||||
static PyObject *
|
||||
SHA1_hexdigest(SHA1object *self, PyObject *unused)
|
||||
{
|
||||
unsigned char digest[SHA1_DIGESTSIZE];
|
||||
struct sha1_state temp;
|
||||
PyObject *retval;
|
||||
Py_UNICODE *hex_digest;
|
||||
int i, j;
|
||||
|
||||
/* Get the raw (binary) digest value */
|
||||
temp = self->hash_state;
|
||||
sha1_done(&temp, digest);
|
||||
|
||||
/* Create a new string */
|
||||
retval = PyUnicode_FromStringAndSize(NULL, SHA1_DIGESTSIZE * 2);
|
||||
if (!retval)
|
||||
return NULL;
|
||||
hex_digest = PyUnicode_AS_UNICODE(retval);
|
||||
if (!hex_digest) {
|
||||
Py_DECREF(retval);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Make hex version of the digest */
|
||||
for(i=j=0; i<SHA1_DIGESTSIZE; 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(SHA1_update__doc__,
|
||||
"Update this hash object's state with the provided string.");
|
||||
|
||||
static PyObject *
|
||||
SHA1_update(SHA1object *self, PyObject *args)
|
||||
{
|
||||
unsigned char *cp;
|
||||
int len;
|
||||
|
||||
if (!PyArg_ParseTuple(args, "s#:update", &cp, &len))
|
||||
return NULL;
|
||||
|
||||
sha1_process(&self->hash_state, cp, len);
|
||||
|
||||
Py_INCREF(Py_None);
|
||||
return Py_None;
|
||||
}
|
||||
|
||||
static PyMethodDef SHA1_methods[] = {
|
||||
{"copy", (PyCFunction)SHA1_copy, METH_NOARGS, SHA1_copy__doc__},
|
||||
{"digest", (PyCFunction)SHA1_digest, METH_NOARGS, SHA1_digest__doc__},
|
||||
{"hexdigest", (PyCFunction)SHA1_hexdigest, METH_NOARGS, SHA1_hexdigest__doc__},
|
||||
{"update", (PyCFunction)SHA1_update, METH_VARARGS, SHA1_update__doc__},
|
||||
{NULL, NULL} /* sentinel */
|
||||
};
|
||||
|
||||
static PyObject *
|
||||
SHA1_get_block_size(PyObject *self, void *closure)
|
||||
{
|
||||
return PyInt_FromLong(SHA1_BLOCKSIZE);
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
SHA1_get_name(PyObject *self, void *closure)
|
||||
{
|
||||
return PyUnicode_FromStringAndSize("SHA1", 3);
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
sha1_get_digest_size(PyObject *self, void *closure)
|
||||
{
|
||||
return PyInt_FromLong(SHA1_DIGESTSIZE);
|
||||
}
|
||||
|
||||
|
||||
static PyGetSetDef SHA1_getseters[] = {
|
||||
{"block_size",
|
||||
(getter)SHA1_get_block_size, NULL,
|
||||
NULL,
|
||||
NULL},
|
||||
{"name",
|
||||
(getter)SHA1_get_name, NULL,
|
||||
NULL,
|
||||
NULL},
|
||||
{"digest_size",
|
||||
(getter)sha1_get_digest_size, NULL,
|
||||
NULL,
|
||||
NULL},
|
||||
{NULL} /* Sentinel */
|
||||
};
|
||||
|
||||
static PyTypeObject SHA1type = {
|
||||
PyVarObject_HEAD_INIT(NULL, 0)
|
||||
"_sha1.sha1", /*tp_name*/
|
||||
sizeof(SHA1object), /*tp_size*/
|
||||
0, /*tp_itemsize*/
|
||||
/* methods */
|
||||
SHA1_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*/
|
||||
SHA1_methods, /* tp_methods */
|
||||
NULL, /* tp_members */
|
||||
SHA1_getseters, /* tp_getset */
|
||||
};
|
||||
|
||||
|
||||
/* The single module-level function: new() */
|
||||
|
||||
PyDoc_STRVAR(SHA1_new__doc__,
|
||||
"Return a new SHA1 hash object; optionally initialized with a string.");
|
||||
|
||||
static PyObject *
|
||||
SHA1_new(PyObject *self, PyObject *args, PyObject *kwdict)
|
||||
{
|
||||
static char *kwlist[] = {"string", NULL};
|
||||
SHA1object *new;
|
||||
unsigned char *cp = NULL;
|
||||
int len;
|
||||
|
||||
if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist,
|
||||
&cp, &len)) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if ((new = newSHA1object()) == NULL)
|
||||
return NULL;
|
||||
|
||||
sha1_init(&new->hash_state);
|
||||
|
||||
if (PyErr_Occurred()) {
|
||||
Py_DECREF(new);
|
||||
return NULL;
|
||||
}
|
||||
if (cp)
|
||||
sha1_process(&new->hash_state, cp, len);
|
||||
|
||||
return (PyObject *)new;
|
||||
}
|
||||
|
||||
|
||||
/* List of functions exported by this module */
|
||||
|
||||
static struct PyMethodDef SHA1_functions[] = {
|
||||
{"sha1",(PyCFunction)SHA1_new, METH_VARARGS|METH_KEYWORDS,SHA1_new__doc__},
|
||||
{NULL, NULL} /* Sentinel */
|
||||
};
|
||||
|
||||
|
||||
/* Initialize this module. */
|
||||
|
||||
#define insint(n,v) { PyModule_AddIntConstant(m,n,v); }
|
||||
|
||||
PyMODINIT_FUNC
|
||||
init_sha1(void)
|
||||
{
|
||||
PyObject *m;
|
||||
|
||||
Py_Type(&SHA1type) = &PyType_Type;
|
||||
if (PyType_Ready(&SHA1type) < 0)
|
||||
return;
|
||||
m = Py_InitModule("_sha1", SHA1_functions);
|
||||
if (m == NULL)
|
||||
return;
|
||||
}
|
||||
|
|
@ -9,7 +9,7 @@
|
|||
Greg Stein (gstein@lyra.org)
|
||||
Trevor Perrin (trevp@trevp.net)
|
||||
|
||||
Copyright (C) 2005 Gregory P. Smith (greg@electricrain.com)
|
||||
Copyright (C) 2005-2007 Gregory P. Smith (greg@krypto.org)
|
||||
Licensed to PSF under a Contributor Agreement.
|
||||
|
||||
*/
|
||||
|
|
@ -103,7 +103,7 @@ static void SHAcopy(SHAobject *src, SHAobject *dest)
|
|||
* The library is free for all purposes without any express
|
||||
* gurantee it works.
|
||||
*
|
||||
* Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org
|
||||
* Tom St Denis, tomstdenis@iahu.ca, http://libtom.org
|
||||
*/
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@
|
|||
Greg Stein (gstein@lyra.org)
|
||||
Trevor Perrin (trevp@trevp.net)
|
||||
|
||||
Copyright (C) 2005 Gregory P. Smith (greg@electricrain.com)
|
||||
Copyright (C) 2005-2007 Gregory P. Smith (greg@krypto.org)
|
||||
Licensed to PSF under a Contributor Agreement.
|
||||
|
||||
*/
|
||||
|
|
@ -113,7 +113,7 @@ static void SHAcopy(SHAobject *src, SHAobject *dest)
|
|||
* The library is free for all purposes without any express
|
||||
* gurantee it works.
|
||||
*
|
||||
* Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org
|
||||
* Tom St Denis, tomstdenis@iahu.ca, http://libtom.org
|
||||
*/
|
||||
|
||||
|
||||
|
|
|
|||
5
setup.py
5
setup.py
|
|
@ -618,6 +618,11 @@ class PyBuildExt(build_ext):
|
|||
exts.append( Extension('_sha256', ['sha256module.c']) )
|
||||
exts.append( Extension('_sha512', ['sha512module.c']) )
|
||||
|
||||
if not openssl_ver:
|
||||
# no openssl at all, use our own md5 and sha1
|
||||
exts.append( Extension('_md5', ['md5module.c']) )
|
||||
exts.append( Extension('_sha1', ['sha1module.c']) )
|
||||
|
||||
# Modules that provide persistent dictionary-like semantics. You will
|
||||
# probably want to arrange for at least one of them to be available on
|
||||
# your machine, though none are defined by default because of library
|
||||
|
|
|
|||
Loading…
Reference in New Issue