From ab1bdc6e5f51c5a6a5f1cadbbfb286233a265375 Mon Sep 17 00:00:00 2001 From: Rob Landley Date: Tue, 23 Oct 2012 16:28:14 -0500 Subject: Add md5sum in lsb, combine sha1sum (mostly shared infrastructure). Downside: current infrastructure can't give them different help text. Hmmm... --- toys/other/sha1sum.c | 156 --------------------------------------------------- 1 file changed, 156 deletions(-) delete mode 100644 toys/other/sha1sum.c (limited to 'toys/other') diff --git a/toys/other/sha1sum.c b/toys/other/sha1sum.c deleted file mode 100644 index 984baad5..00000000 --- a/toys/other/sha1sum.c +++ /dev/null @@ -1,156 +0,0 @@ -/* vi: set sw=4 ts=4: - * - * sha1sum.c - Calculate sha1 cryptographic hash for input. - * - * Copyright 2007 Rob Landley - * - * Based on the public domain SHA-1 in C by Steve Reid - * from http://www.mirrors.wiretapped.net/security/cryptography/hashes/sha1/ - -USE_SHA1SUM(NEWTOY(sha1sum, NULL, TOYFLAG_USR|TOYFLAG_BIN)) - -config SHA1SUM - bool "sha1sum" - default y - help - usage: sha1sum [file...] - - Calculate sha1 hash of files (or stdin). -*/ - -#define FOR_sha1sum -#include - -GLOBALS( - uint32_t state[5]; - uint32_t oldstate[5]; - uint64_t count; - union { - unsigned char c[64]; - uint32_t i[16]; - } buffer; -) - - -static const unsigned rconsts[]={0x5A827999,0x6ED9EBA1,0x8F1BBCDC,0xCA62C1D6}; - -// Hash a single 512-bit block. This is the core of the algorithm. - -#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) -static void sha1_transform(void) -{ - int i, j, k, count; - unsigned *block = TT.buffer.i; - unsigned *rot[5], *temp; - - // Copy context->state[] to working vars - for (i=0; i<5; i++) { - TT.oldstate[i] = TT.state[i]; - rot[i] = TT.state + i; - } - // 4 rounds of 20 operations each. - for (i=count=0; i<4; i++) { - for (j=0; j<20; j++) { - unsigned work; - - work = *rot[2] ^ *rot[3]; - if (!i) work = (work & *rot[1]) ^ *rot[3]; - else { - if (i==2) - work = ((*rot[1]|*rot[2])&*rot[3])|(*rot[1]&*rot[2]); - else work ^= *rot[1]; - } - - if (!i && j<16) work += block[count] = (rol(block[count],24)&0xFF00FF00) | (rol(block[count],8)&0x00FF00FF); - else work += block[count&15] = rol(block[(count+13)&15]^block[(count+8)&15]^block[(count+2)&15]^block[count&15],1); - *rot[4] += work + rol(*rot[0],5) + rconsts[i]; - *rot[1] = rol(*rot[1],30); - - // Rotate by one for next time. - temp = rot[4]; - for (k=4; k; k--) rot[k] = rot[k-1]; - *rot = temp; - count++; - } - } - // Add the previous values of state[] - for (i=0; i<5; i++) TT.state[i] += TT.oldstate[i]; -} - -// Fill the 64-byte working buffer and call sha1_transform() when full. - -static void sha1_update(char *data, unsigned int len) -{ - unsigned int i, j; - - j = TT.count & 63; - TT.count += len; - - // Enough data to process a frame? - if ((j + len) > 63) { - i = 64-j; - memcpy(TT.buffer.c + j, data, i); - sha1_transform(); - for ( ; i + 63 < len; i += 64) { - memcpy(TT.buffer.c, data + i, 64); - sha1_transform(); - } - j = 0; - } else i = 0; - // Grab remaining chunk - memcpy(TT.buffer.c + j, data + i, len - i); -} - -// Callback for loopfiles() - -static void do_sha1(int fd, char *name) -{ - uint64_t count; - int i; - char buf; - - /* SHA1 initialization constants */ - TT.state[0] = 0x67452301; - TT.state[1] = 0xEFCDAB89; - TT.state[2] = 0x98BADCFE; - TT.state[3] = 0x10325476; - TT.state[4] = 0xC3D2E1F0; - TT.count = 0; - - for (;;) { - i = read(fd, toybuf, sizeof(toybuf)); - if (i<1) break; - sha1_update(toybuf, i); - } - - count = TT.count << 3; - - // End the message by appending a "1" bit to the data, ending with the - // message size (in bits, big endian), and adding enough zero bits in - // between to pad to the end of the next 64-byte frame. - // - // Since our input up to now has been in whole bytes, we can deal with - // bytes here too. - - buf = 0x80; - do { - sha1_update(&buf, 1); - buf = 0; - } while ((TT.count & 63) != 56); - for (i = 0; i < 8; i++) - TT.buffer.c[56+i] = count >> (8*(7-i)); - sha1_transform(); - - for (i = 0; i < 20; i++) - toybuf[i] = TT.state[i>>2] >> ((3-(i & 3)) * 8); - // Wipe variables. Cryptogropher paranoia. - memset(&TT, 0, sizeof(TT)); - - for (i = 0; i < 20; i++) printf("%02x", toybuf[i]); - printf(" %s\n", name); -} - -void sha1sum_main(void) -{ - loopfiles(toys.optargs, do_sha1); -} -- cgit v1.2.3