Add implementations for sha256, sha384, and sha512
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
parent
ba949f5522
commit
4e57a54703
2
Makefile
2
Makefile
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@ -46,7 +46,7 @@ SRC32FLAT=$(SRCBOTH) post.c e820map.c malloc.c romfile.c x86.c \
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fw/mtrr.c fw/xen.c fw/acpi.c fw/mptable.c fw/pirtable.c \
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fw/smbios.c fw/romfile_loader.c fw/dsdt_parser.c hw/virtio-ring.c \
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hw/virtio-pci.c hw/virtio-mmio.c hw/virtio-blk.c hw/virtio-scsi.c \
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hw/tpm_drivers.c hw/nvme.c
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hw/tpm_drivers.c hw/nvme.c sha256.c sha512.c
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SRC32SEG=string.c output.c pcibios.c apm.c stacks.c hw/pci.c hw/serialio.c
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DIRS=src src/hw src/fw vgasrc
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@ -0,0 +1,11 @@
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#ifndef __SHA_H
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#define __SHA_H
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#include "types.h" // u32
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void sha1(const u8 *data, u32 length, u8 *hash);
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void sha256(const u8 *data, u32 length, u8 *hash);
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void sha384(const u8 *data, u32 length, u8 *hash);
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void sha512(const u8 *data, u32 length, u8 *hash);
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#endif // sha.h
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@ -13,7 +13,7 @@
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#include "config.h"
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#include "byteorder.h" // cpu_to_*, __swab64
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#include "sha1.h" // sha1
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#include "sha.h" // sha1
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#include "string.h" // memcpy
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#include "x86.h" // rol
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@ -126,11 +126,11 @@ sha1_do(sha1_ctx *ctx, const u8 *data32, u32 length)
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}
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u32
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void
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sha1(const u8 *data, u32 length, u8 *hash)
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{
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if (!CONFIG_TCGBIOS)
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return 0;
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return;
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sha1_ctx ctx = {
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.h[0] = 0x67452301,
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@ -143,5 +143,5 @@ sha1(const u8 *data, u32 length, u8 *hash)
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sha1_do(&ctx, data, length);
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memcpy(hash, &ctx.h[0], 20);
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return 0;
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return;
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}
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@ -1,8 +0,0 @@
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#ifndef __SHA1_H
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#define __SHA1_H
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#include "types.h" // u32
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u32 sha1(const u8 *data, u32 length, u8 *hash);
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#endif // sha1.h
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@ -0,0 +1,211 @@
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/*****************************************************************************
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* Copyright (c) 2015-2020 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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/*
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* See: NIST standard for SHA-256 in FIPS PUB 180-4
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*/
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#include "config.h"
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#include "byteorder.h"
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#include "sha.h"
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#include "string.h"
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#include "x86.h"
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typedef struct _sha256_ctx {
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u32 h[8];
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} sha256_ctx;
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static inline u32 Ch(u32 x, u32 y, u32 z)
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{
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return (x & y) | ((x ^ 0xffffffff) & z);
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}
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static inline u32 Maj(u32 x, u32 y, u32 z)
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{
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return (x & y) | (x & z) | (y & z);
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}
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static inline u32 sum0(u32 x)
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{
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return ror(x, 2) ^ ror(x, 13) ^ ror(x, 22);
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}
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static inline u32 sum1(u32 x)
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{
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return ror(x, 6) ^ ror(x, 11) ^ ror(x, 25);
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}
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static inline u32 sigma0(u32 x)
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{
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return ror(x, 7) ^ ror(x, 18) ^ (x >> 3);
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}
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static inline u32 sigma1(u32 x)
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{
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return ror(x, 17) ^ ror(x, 19) ^ (x >> 10);
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}
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static void sha256_block(u32 *w, sha256_ctx *ctx)
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{
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u32 t;
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u32 a, b, c, d, e, f, g, h;
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u32 T1, T2;
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/*
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* FIPS 180-4 4.2.2: SHA256 Constants
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*/
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static const u32 sha_ko[64] = {
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
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0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
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0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
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0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
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0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
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0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
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0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
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0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
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0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
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};
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/*
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* FIPS 180-4 6.2.2: step 1
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*
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* 0 <= i <= 15:
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* W(t) = M(t)
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* 16 <= i <= 63:
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* W(t) = sigma1(W(t-2)) + W(t-7) + sigma0(W(t-15)) + W(t-16)
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*/
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/* w(0)..w(15) are in big endian format */
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for (t = 0; t <= 15; t++)
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w[t] = be32_to_cpu(w[t]);
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for (t = 16; t <= 63; t++)
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w[t] = sigma1(w[t-2]) + w[t-7] + sigma0(w[t-15]) + w[t-16];
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/*
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* step 2: a = H0, b = H1, c = H2, d = H3, e = H4, f = H5, g = H6, h = H7
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*/
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a = ctx->h[0];
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b = ctx->h[1];
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c = ctx->h[2];
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d = ctx->h[3];
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e = ctx->h[4];
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f = ctx->h[5];
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g = ctx->h[6];
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h = ctx->h[7];
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/*
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* step 3: For i = 0 to 63:
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* T1 = h + sum1(e) + Ch(e,f,g) + K(t) + W(t);
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* T2 = sum0(a) + Maj(a,b,c)
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* h = g; g = f; f = e; e = d + T1; d = c; c = b; b = a; a + T1 + T2
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*/
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for (t = 0; t <= 63; t++) {
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T1 = h + sum1(e) + Ch(e, f, g) + sha_ko[t] + w[t];
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T2 = sum0(a) + Maj(a, b, c);
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h = g;
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g = f;
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f = e;
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e = d + T1;
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d = c;
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c = b;
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b = a;
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a = T1 + T2;
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}
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/*
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* step 4:
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* H0 = a + H0, H1 = b + H1, H2 = c + H2, H3 = d + H3, H4 = e + H4
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*/
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ctx->h[0] += a;
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ctx->h[1] += b;
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ctx->h[2] += c;
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ctx->h[3] += d;
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ctx->h[4] += e;
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ctx->h[5] += f;
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ctx->h[6] += g;
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ctx->h[7] += h;
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}
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static void sha256_do(sha256_ctx *ctx, const u8 *data32, u32 length)
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{
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u32 offset;
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u16 num;
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u32 bits = 0;
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u32 w[64];
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u64 tmp;
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/* treat data in 64-byte chunks */
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for (offset = 0; length - offset >= 64; offset += 64) {
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memcpy(w, data32 + offset, 64);
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sha256_block((u32 *)w, ctx);
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bits += (64 * 8);
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}
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/* last block with less than 64 bytes */
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num = length - offset;
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bits += (num << 3);
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memcpy(w, data32 + offset, num);
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/*
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* FIPS 180-4 5.1: Padding the Message
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*/
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((u8 *)w)[num] = 0x80;
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if (64 - (num + 1) > 0)
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memset( &((u8 *)w)[num + 1], 0, 64 - (num + 1));
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if (num >= 56) {
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/* cannot append number of bits here */
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sha256_block((u32 *)w, ctx);
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memset(w, 0, 60);
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}
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/* write number of bits to end of block */
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tmp = cpu_to_be64(bits);
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memcpy(&w[14], &tmp, 8);
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sha256_block(w, ctx);
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/* need to switch result's endianness */
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for (num = 0; num < 8; num++)
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ctx->h[num] = cpu_to_be32(ctx->h[num]);
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}
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void sha256(const u8 *data, u32 length, u8 *hash)
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{
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sha256_ctx ctx = {
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.h = {
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/*
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* FIPS 180-4: 6.2.1
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* -> 5.3.3: initial hash value
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*/
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0x6a09e667,
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0xbb67ae85,
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0x3c6ef372,
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0xa54ff53a,
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0x510e527f,
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0x9b05688c,
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0x1f83d9ab,
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0x5be0cd19
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}
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};
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sha256_do(&ctx, data, length);
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memcpy(hash, ctx.h, sizeof(ctx.h));
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}
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@ -0,0 +1,244 @@
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/*****************************************************************************
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* Copyright (c) 2021 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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/*
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* See: NIST standard for SHA-512 and SHA-384 in FIPS PUB 180-4 & RFC 6234
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*/
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#include "config.h"
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#include "byteorder.h"
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#include "sha.h"
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#include "string.h"
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typedef struct _sha512_ctx {
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u64 h[8];
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} sha512_ctx;
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static inline u64 ror64(u64 x, u8 n)
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{
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return (x >> n) | (x << (64 - n));
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}
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static inline u64 Ch64(u64 x, u64 y, u64 z)
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{
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return (x & y) ^ ((x ^ 0xffffffffffffffffULL) & z);
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}
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static inline u64 Maj64(u64 x, u64 y, u64 z)
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{
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return (x & y) ^ (x & z) ^ (y & z);
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}
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static inline u64 sum0_64(u64 x)
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{
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return ror64(x, 28) ^ ror64(x, 34) ^ ror64(x, 39);
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}
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static inline u64 sum1_64(u64 x)
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{
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return ror64(x, 14) ^ ror64(x, 18) ^ ror64(x, 41);
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}
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static inline u64 sigma0_64(u64 x)
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{
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return ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7);
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}
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static inline u64 sigma1_64(u64 x)
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{
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return ror64(x, 19) ^ ror64(x, 61) ^ (x >> 6);
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}
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static void sha512_block(u64 *w, sha512_ctx *ctx)
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{
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u32 t;
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u64 a, b, c, d, e, f, g, h;
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u64 T1, T2;
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/*
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* FIPS 180-4 4.2.2: SHA512 Constants
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*/
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static const u64 sha_ko[80] = {
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0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc,
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0x3956c25bf348b538, 0x59f111f1b605d019, 0x923f82a4af194f9b, 0xab1c5ed5da6d8118,
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0xd807aa98a3030242, 0x12835b0145706fbe, 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,
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0x72be5d74f27b896f, 0x80deb1fe3b1696b1, 0x9bdc06a725c71235, 0xc19bf174cf692694,
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0xe49b69c19ef14ad2, 0xefbe4786384f25e3, 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,
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0x2de92c6f592b0275, 0x4a7484aa6ea6e483, 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5,
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0x983e5152ee66dfab, 0xa831c66d2db43210, 0xb00327c898fb213f, 0xbf597fc7beef0ee4,
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0xc6e00bf33da88fc2, 0xd5a79147930aa725, 0x06ca6351e003826f, 0x142929670a0e6e70,
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0x27b70a8546d22ffc, 0x2e1b21385c26c926, 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df,
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0x650a73548baf63de, 0x766a0abb3c77b2a8, 0x81c2c92e47edaee6, 0x92722c851482353b,
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0xa2bfe8a14cf10364, 0xa81a664bbc423001, 0xc24b8b70d0f89791, 0xc76c51a30654be30,
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0xd192e819d6ef5218, 0xd69906245565a910, 0xf40e35855771202a, 0x106aa07032bbd1b8,
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0x19a4c116b8d2d0c8, 0x1e376c085141ab53, 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8,
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0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb, 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3,
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0x748f82ee5defb2fc, 0x78a5636f43172f60, 0x84c87814a1f0ab72, 0x8cc702081a6439ec,
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0x90befffa23631e28, 0xa4506cebde82bde9, 0xbef9a3f7b2c67915, 0xc67178f2e372532b,
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0xca273eceea26619c, 0xd186b8c721c0c207, 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178,
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0x06f067aa72176fba, 0x0a637dc5a2c898a6, 0x113f9804bef90dae, 0x1b710b35131c471b,
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0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c,
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0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
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};
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/*
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* FIPS 180-4 6.4.2: step 1
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*
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* 0 <= i <= 15:
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* W(t) = M(t)
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* 16 <= i <= 79:
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* W(t) = sigma1(W(t-2)) + W(t-7) + sigma0(W(t-15)) + W(t-16)
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*/
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/* w(0)..w(15) are in big endian format */
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for (t = 0; t <= 15; t++)
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w[t] = be64_to_cpu(w[t]);
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for (t = 16; t <= 79; t++)
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w[t] = sigma1_64(w[t-2]) + w[t-7] + sigma0_64(w[t-15]) + w[t-16];
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/*
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* step 2: a = H0, b = H1, c = H2, d = H3, e = H4, f = H5, g = H6, h = H7
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*/
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a = ctx->h[0];
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b = ctx->h[1];
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c = ctx->h[2];
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d = ctx->h[3];
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e = ctx->h[4];
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f = ctx->h[5];
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g = ctx->h[6];
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h = ctx->h[7];
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/*
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* step 3: For i = 0 to 79:
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* T1 = h + sum1(e) + Ch(e,f,g) + K(t) + W(t);
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* T2 = sum0(a) + Maj(a,b,c)
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* h = g; g = f; f = e; e = d + T1; d = c; c = b; b = a; a + T1 + T2
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*/
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for (t = 0; t <= 79; t++) {
|
||||
T1 = h + sum1_64(e) + Ch64(e, f, g) + sha_ko[t] + w[t];
|
||||
T2 = sum0_64(a) + Maj64(a, b, c);
|
||||
h = g;
|
||||
g = f;
|
||||
f = e;
|
||||
e = d + T1;
|
||||
d = c;
|
||||
c = b;
|
||||
b = a;
|
||||
a = T1 + T2;
|
||||
}
|
||||
|
||||
/*
|
||||
* step 4:
|
||||
* H0 = a + H0, H1 = b + H1, H2 = c + H2, H3 = d + H3, H4 = e + H4
|
||||
*/
|
||||
ctx->h[0] += a;
|
||||
ctx->h[1] += b;
|
||||
ctx->h[2] += c;
|
||||
ctx->h[3] += d;
|
||||
ctx->h[4] += e;
|
||||
ctx->h[5] += f;
|
||||
ctx->h[6] += g;
|
||||
ctx->h[7] += h;
|
||||
}
|
||||
|
||||
static void sha512_do(sha512_ctx *ctx, const u8 *data32, u32 length)
|
||||
{
|
||||
u32 offset;
|
||||
u16 num;
|
||||
u64 bits = 0;
|
||||
u64 w[80];
|
||||
u64 tmp;
|
||||
|
||||
/* treat data in 128-byte/1024 bit chunks */
|
||||
for (offset = 0; length - offset >= 128; offset += 128) {
|
||||
memcpy(w, data32 + offset, 128);
|
||||
sha512_block(w, ctx);
|
||||
bits += (128 * 8);
|
||||
}
|
||||
|
||||
/* last block with less than 128 bytes */
|
||||
num = length - offset;
|
||||
bits += (num << 3);
|
||||
|
||||
memcpy(w, data32 + offset, num);
|
||||
/*
|
||||
* FIPS 180-4 5.1: Padding the Message
|
||||
*/
|
||||
((u8 *)w)[num] = 0x80;
|
||||
if (128 - (num + 1) > 0)
|
||||
memset( &((u8 *)w)[num + 1], 0, 128 - (num + 1));
|
||||
|
||||
if (num >= 112) {
|
||||
/* cannot append number of bits here;
|
||||
* need space for 128 bits (16 bytes)
|
||||
*/
|
||||
sha512_block((u64 *)w, ctx);
|
||||
memset(w, 0, 128);
|
||||
}
|
||||
|
||||
/* write number of bits to end of the block; we write 64 bits */
|
||||
tmp = cpu_to_be64(bits);
|
||||
memcpy(&w[15], &tmp, 8);
|
||||
|
||||
sha512_block(w, ctx);
|
||||
|
||||
/* need to switch result's endianness */
|
||||
for (num = 0; num < 8; num++)
|
||||
ctx->h[num] = cpu_to_be64(ctx->h[num]);
|
||||
}
|
||||
|
||||
void sha384(const u8 *data, u32 length, u8 *hash)
|
||||
{
|
||||
sha512_ctx ctx = {
|
||||
.h = {
|
||||
/*
|
||||
* FIPS 180-4: 6.2.1
|
||||
* -> 5.3.4: initial hash value
|
||||
*/
|
||||
0xcbbb9d5dc1059ed8,
|
||||
0x629a292a367cd507,
|
||||
0x9159015a3070dd17,
|
||||
0x152fecd8f70e5939,
|
||||
0x67332667ffc00b31,
|
||||
0x8eb44a8768581511,
|
||||
0xdb0c2e0d64f98fa7,
|
||||
0x47b5481dbefa4fa4
|
||||
}
|
||||
};
|
||||
|
||||
sha512_do(&ctx, data, length);
|
||||
memcpy(hash, ctx.h, 384/8);
|
||||
}
|
||||
|
||||
void sha512(const u8 *data, u32 length, u8 *hash)
|
||||
{
|
||||
sha512_ctx ctx = {
|
||||
.h = {
|
||||
/*
|
||||
* FIPS 180-4: 6.2.1
|
||||
* -> 5.3.5: initial hash value
|
||||
*/
|
||||
0x6a09e667f3bcc908,
|
||||
0xbb67ae8584caa73b,
|
||||
0x3c6ef372fe94f82b,
|
||||
0xa54ff53a5f1d36f1,
|
||||
0x510e527fade682d1,
|
||||
0x9b05688c2b3e6c1f,
|
||||
0x1f83d9abfb41bd6b,
|
||||
0x5be0cd19137e2179
|
||||
}
|
||||
};
|
||||
|
||||
sha512_do(&ctx, data, length);
|
||||
memcpy(hash, ctx.h, sizeof(ctx.h));
|
||||
}
|
|
@ -16,7 +16,7 @@
|
|||
#include "fw/paravirt.h" // runningOnXen
|
||||
#include "hw/tpm_drivers.h" // tpm_drivers[]
|
||||
#include "output.h" // dprintf
|
||||
#include "sha1.h" // sha1
|
||||
#include "sha.h" // sha1, sha256, ...
|
||||
#include "std/acpi.h" // RSDP_SIGNATURE, rsdt_descriptor
|
||||
#include "std/smbios.h" // struct smbios_entry_point
|
||||
#include "std/tcg.h" // TCG_PC_LOGOVERFLOW
|
||||
|
|
|
@ -140,6 +140,13 @@ static inline u32 rol(u32 val, u16 rol) {
|
|||
return res;
|
||||
}
|
||||
|
||||
static inline u32 ror(u32 val, u16 ror) {
|
||||
u32 res;
|
||||
asm volatile("rorl %%cl, %%eax"
|
||||
: "=a" (res) : "a" (val), "c" (ror));
|
||||
return res;
|
||||
}
|
||||
|
||||
static inline void outb(u8 value, u16 port) {
|
||||
__asm__ __volatile__("outb %b0, %w1" : : "a"(value), "Nd"(port));
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue