sbase

suckless unix tools
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commit 9e5718282a48e9d1b07b8d53e13e61670b5d86c6
parent b5b7db400905a98319c2b8978156565c68247fa5
Author: sin <sin@2f30.org>
Date:   Mon Jul 22 09:34:07 +0100

Add sha512sum(1)

Diffstat:
Makefile | 6++++--
config.mk | 2+-
sha512.h | 18++++++++++++++++++
sha512sum.1 | 8++++++++
sha512sum.c | 49+++++++++++++++++++++++++++++++++++++++++++++++++
util/sha512.c | 163+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 243 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile @@ -3,7 +3,7 @@ include config.mk .POSIX: .SUFFIXES: .c .o -HDR = crypt.h fs.h text.h md5.h sha1.h util.h arg.h +HDR = crypt.h fs.h text.h md5.h sha1.h sha256.h sha512.h util.h arg.h LIB = \ util/afgets.o \ util/agetcwd.o \ @@ -21,7 +21,8 @@ LIB = \ util/recurse.o \ util/rm.o \ util/sha1.o \ - util/sha256.o + util/sha256.o \ + util/sha512.o SRC = \ basename.c \ @@ -82,6 +83,7 @@ SRC = \ seq.c \ sha1sum.c \ sha256sum.c\ + sha512sum.c\ wc.c \ who.c \ yes.c diff --git a/config.mk b/config.mk @@ -9,7 +9,7 @@ MANPREFIX = $(PREFIX)/share/man #CC = musl-gcc LD = $(CC) CPPFLAGS = -D_BSD_SOURCE -D_GNU_SOURCE -CFLAGS = -g -ansi -Wall -pedantic $(CPPFLAGS) +CFLAGS = -g -ansi -Wall -Wno-long-long -pedantic $(CPPFLAGS) LDFLAGS = -g #CC = tcc diff --git a/sha512.h b/sha512.h @@ -0,0 +1,18 @@ +/* public domain sha512 implementation based on fips180-3 */ + +struct sha512 { + uint64_t len; /* processed message length */ + uint64_t h[8]; /* hash state */ + uint8_t buf[128]; /* message block buffer */ +}; + +enum { SHA512_DIGEST_LENGTH = 64 }; + +/* reset state */ +void sha512_init(void *ctx); +/* process message */ +void sha512_update(void *ctx, const void *m, unsigned long len); +/* get message digest */ +/* state is ruined after sum, keep a copy if multiple sum is needed */ +/* part of the message might be left in s, zero it if secrecy is needed */ +void sha512_sum(void *ctx, uint8_t md[SHA512_DIGEST_LENGTH]); diff --git a/sha512sum.1 b/sha512sum.1 @@ -0,0 +1,8 @@ +.TH SHA512SUM 1 sbase\-VERSION +.SH NAME +sha512sum \- compute SHA512 message digest +.SH SYNOPSIS +.B sha512sum +.RI [ file ...] +.SH DESCRIPTION +Print SHA512 (512-bit) checksums. With no file, read standard input. diff --git a/sha512sum.c b/sha512sum.c @@ -0,0 +1,49 @@ +/* See LICENSE file for copyright and license details. */ +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include "util.h" +#include "crypt.h" +#include "sha512.h" + +struct sha512 s; +struct crypt_ops sha512_ops = { + sha512_init, + sha512_update, + sha512_sum, + &s, +}; + +static void +usage(void) +{ + eprintf("usage: %s [file...]\n", argv0); +} + +int +main(int argc, char *argv[]) +{ + FILE *fp; + uint8_t md[SHA512_DIGEST_LENGTH]; + + ARGBEGIN { + default: + usage(); + } ARGEND; + + if (argc == 0) { + cryptsum(&sha512_ops, stdin, "<stdin>", md); + mdprint(md, "<stdin>", sizeof(md)); + } else { + for (; argc > 0; argc--) { + if ((fp = fopen(*argv, "r")) == NULL) + eprintf("fopen %s:", *argv); + cryptsum(&sha512_ops, fp, *argv, md); + mdprint(md, *argv, sizeof(md)); + fclose(fp); + argv++; + } + } + + return 0; +} diff --git a/util/sha512.c b/util/sha512.c @@ -0,0 +1,163 @@ +/* public domain sha256 implementation based on fips180-3 */ + +#include <ctype.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdint.h> +#include "../sha512.h" + +static uint64_t ror(uint64_t n, int k) { return (n >> k) | (n << (64-k)); } +#define Ch(x,y,z) (z ^ (x & (y ^ z))) +#define Maj(x,y,z) ((x & y) | (z & (x | y))) +#define S0(x) (ror(x,28) ^ ror(x,34) ^ ror(x,39)) +#define S1(x) (ror(x,14) ^ ror(x,18) ^ ror(x,41)) +#define R0(x) (ror(x,1) ^ ror(x,8) ^ (x>>7)) +#define R1(x) (ror(x,19) ^ ror(x,61) ^ (x>>6)) + +static const uint64_t K[80] = { +0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, +0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, +0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, +0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, +0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, +0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, +0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, +0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, +0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, +0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, +0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, +0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, +0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, +0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, +0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, +0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, +0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, +0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, +0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, +0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL +}; + +static void processblock(struct sha512 *s, const uint8_t *buf) +{ + uint64_t W[80], t1, t2, a, b, c, d, e, f, g, h; + int i; + + for (i = 0; i < 16; i++) { + W[i] = (uint64_t)buf[8*i]<<56; + W[i] |= (uint64_t)buf[8*i+1]<<48; + W[i] |= (uint64_t)buf[8*i+2]<<40; + W[i] |= (uint64_t)buf[8*i+3]<<32; + W[i] |= (uint64_t)buf[8*i+4]<<24; + W[i] |= (uint64_t)buf[8*i+5]<<16; + W[i] |= (uint64_t)buf[8*i+6]<<8; + W[i] |= buf[8*i+7]; + } + for (; i < 80; i++) + W[i] = R1(W[i-2]) + W[i-7] + R0(W[i-15]) + W[i-16]; + a = s->h[0]; + b = s->h[1]; + c = s->h[2]; + d = s->h[3]; + e = s->h[4]; + f = s->h[5]; + g = s->h[6]; + h = s->h[7]; + for (i = 0; i < 80; i++) { + t1 = h + S1(e) + Ch(e,f,g) + K[i] + W[i]; + t2 = S0(a) + Maj(a,b,c); + h = g; + g = f; + f = e; + e = d + t1; + d = c; + c = b; + b = a; + a = t1 + t2; + } + s->h[0] += a; + s->h[1] += b; + s->h[2] += c; + s->h[3] += d; + s->h[4] += e; + s->h[5] += f; + s->h[6] += g; + s->h[7] += h; +} + +static void pad(struct sha512 *s) +{ + unsigned r = s->len % 128; + + s->buf[r++] = 0x80; + if (r > 112) { + memset(s->buf + r, 0, 128 - r); + r = 0; + processblock(s, s->buf); + } + memset(s->buf + r, 0, 120 - r); + s->len *= 8; + s->buf[120] = s->len >> 56; + s->buf[121] = s->len >> 48; + s->buf[122] = s->len >> 40; + s->buf[123] = s->len >> 32; + s->buf[124] = s->len >> 24; + s->buf[125] = s->len >> 16; + s->buf[126] = s->len >> 8; + s->buf[127] = s->len; + processblock(s, s->buf); +} + +void sha512_init(void *ctx) +{ + struct sha512 *s = ctx; + s->len = 0; + s->h[0] = 0x6a09e667f3bcc908ULL; + s->h[1] = 0xbb67ae8584caa73bULL; + s->h[2] = 0x3c6ef372fe94f82bULL; + s->h[3] = 0xa54ff53a5f1d36f1ULL; + s->h[4] = 0x510e527fade682d1ULL; + s->h[5] = 0x9b05688c2b3e6c1fULL; + s->h[6] = 0x1f83d9abfb41bd6bULL; + s->h[7] = 0x5be0cd19137e2179ULL; +} + +void sha512_sum(void *ctx, uint8_t md[SHA512_DIGEST_LENGTH]) +{ + struct sha512 *s = ctx; + int i; + + pad(s); + for (i = 0; i < 8; i++) { + md[8*i] = s->h[i] >> 56; + md[8*i+1] = s->h[i] >> 48; + md[8*i+2] = s->h[i] >> 40; + md[8*i+3] = s->h[i] >> 32; + md[8*i+4] = s->h[i] >> 24; + md[8*i+5] = s->h[i] >> 16; + md[8*i+6] = s->h[i] >> 8; + md[8*i+7] = s->h[i]; + } +} + +void sha512_update(void *ctx, const void *m, unsigned long len) +{ + struct sha512 *s = ctx; + const uint8_t *p = m; + unsigned r = s->len % 128; + + s->len += len; + if (r) { + if (len < 128 - r) { + memcpy(s->buf + r, p, len); + return; + } + memcpy(s->buf + r, p, 128 - r); + len -= 128 - r; + p += 128 - r; + processblock(s, s->buf); + } + for (; len >= 128; len -= 128, p += 128) + processblock(s, p); + memcpy(s->buf, p, len); +}