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-rw-r--r--qemu/roms/ipxe/src/crypto/sha256.c283
1 files changed, 0 insertions, 283 deletions
diff --git a/qemu/roms/ipxe/src/crypto/sha256.c b/qemu/roms/ipxe/src/crypto/sha256.c
deleted file mode 100644
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--- a/qemu/roms/ipxe/src/crypto/sha256.c
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@@ -1,283 +0,0 @@
-/*
- * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
-/** @file
- *
- * SHA-256 algorithm
- *
- */
-
-#include <stdint.h>
-#include <string.h>
-#include <byteswap.h>
-#include <assert.h>
-#include <ipxe/rotate.h>
-#include <ipxe/crypto.h>
-#include <ipxe/asn1.h>
-#include <ipxe/sha256.h>
-
-/** SHA-256 variables */
-struct sha256_variables {
- /* This layout matches that of struct sha256_digest_data,
- * allowing for efficient endianness-conversion,
- */
- uint32_t a;
- uint32_t b;
- uint32_t c;
- uint32_t d;
- uint32_t e;
- uint32_t f;
- uint32_t g;
- uint32_t h;
- uint32_t w[SHA256_ROUNDS];
-} __attribute__ (( packed ));
-
-/** SHA-256 constants */
-static const uint32_t k[SHA256_ROUNDS] = {
- 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
- 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
- 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
- 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
- 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
- 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
- 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
- 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
- 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
- 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
- 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
-};
-
-/** SHA-256 initial digest values */
-static const struct sha256_digest sha256_init_digest = {
- .h = {
- cpu_to_be32 ( 0x6a09e667 ),
- cpu_to_be32 ( 0xbb67ae85 ),
- cpu_to_be32 ( 0x3c6ef372 ),
- cpu_to_be32 ( 0xa54ff53a ),
- cpu_to_be32 ( 0x510e527f ),
- cpu_to_be32 ( 0x9b05688c ),
- cpu_to_be32 ( 0x1f83d9ab ),
- cpu_to_be32 ( 0x5be0cd19 ),
- },
-};
-
-/**
- * Initialise SHA-256 family algorithm
- *
- * @v context SHA-256 context
- * @v init Initial digest values
- * @v digestsize Digest size
- */
-void sha256_family_init ( struct sha256_context *context,
- const struct sha256_digest *init,
- size_t digestsize ) {
-
- context->len = 0;
- context->digestsize = digestsize;
- memcpy ( &context->ddd.dd.digest, init,
- sizeof ( context->ddd.dd.digest ) );
-}
-
-/**
- * Initialise SHA-256 algorithm
- *
- * @v ctx SHA-256 context
- */
-static void sha256_init ( void *ctx ) {
- struct sha256_context *context = ctx;
-
- sha256_family_init ( context, &sha256_init_digest,
- sizeof ( struct sha256_digest ) );
-}
-
-/**
- * Calculate SHA-256 digest of accumulated data
- *
- * @v context SHA-256 context
- */
-static void sha256_digest ( struct sha256_context *context ) {
- union {
- union sha256_digest_data_dwords ddd;
- struct sha256_variables v;
- } u;
- uint32_t *a = &u.v.a;
- uint32_t *b = &u.v.b;
- uint32_t *c = &u.v.c;
- uint32_t *d = &u.v.d;
- uint32_t *e = &u.v.e;
- uint32_t *f = &u.v.f;
- uint32_t *g = &u.v.g;
- uint32_t *h = &u.v.h;
- uint32_t *w = u.v.w;
- uint32_t s0;
- uint32_t s1;
- uint32_t maj;
- uint32_t t1;
- uint32_t t2;
- uint32_t ch;
- unsigned int i;
-
- /* Sanity checks */
- assert ( ( context->len % sizeof ( context->ddd.dd.data ) ) == 0 );
- linker_assert ( &u.ddd.dd.digest.h[0] == a, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.digest.h[1] == b, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.digest.h[2] == c, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.digest.h[3] == d, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.digest.h[4] == e, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.digest.h[5] == f, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.digest.h[6] == g, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.digest.h[7] == h, sha256_bad_layout );
- linker_assert ( &u.ddd.dd.data.dword[0] == w, sha256_bad_layout );
-
- DBGC ( context, "SHA256 digesting:\n" );
- DBGC_HDA ( context, 0, &context->ddd.dd.digest,
- sizeof ( context->ddd.dd.digest ) );
- DBGC_HDA ( context, context->len, &context->ddd.dd.data,
- sizeof ( context->ddd.dd.data ) );
-
- /* Convert h[0..7] to host-endian, and initialise a, b, c, d,
- * e, f, g, h, and w[0..15]
- */
- for ( i = 0 ; i < ( sizeof ( u.ddd.dword ) /
- sizeof ( u.ddd.dword[0] ) ) ; i++ ) {
- be32_to_cpus ( &context->ddd.dword[i] );
- u.ddd.dword[i] = context->ddd.dword[i];
- }
-
- /* Initialise w[16..63] */
- for ( i = 16 ; i < SHA256_ROUNDS ; i++ ) {
- s0 = ( ror32 ( w[i-15], 7 ) ^ ror32 ( w[i-15], 18 ) ^
- ( w[i-15] >> 3 ) );
- s1 = ( ror32 ( w[i-2], 17 ) ^ ror32 ( w[i-2], 19 ) ^
- ( w[i-2] >> 10 ) );
- w[i] = ( w[i-16] + s0 + w[i-7] + s1 );
- }
-
- /* Main loop */
- for ( i = 0 ; i < SHA256_ROUNDS ; i++ ) {
- s0 = ( ror32 ( *a, 2 ) ^ ror32 ( *a, 13 ) ^ ror32 ( *a, 22 ) );
- maj = ( ( *a & *b ) ^ ( *a & *c ) ^ ( *b & *c ) );
- t2 = ( s0 + maj );
- s1 = ( ror32 ( *e, 6 ) ^ ror32 ( *e, 11 ) ^ ror32 ( *e, 25 ) );
- ch = ( ( *e & *f ) ^ ( (~*e) & *g ) );
- t1 = ( *h + s1 + ch + k[i] + w[i] );
- *h = *g;
- *g = *f;
- *f = *e;
- *e = ( *d + t1 );
- *d = *c;
- *c = *b;
- *b = *a;
- *a = ( t1 + t2 );
- DBGC2 ( context, "%2d : %08x %08x %08x %08x %08x %08x %08x "
- "%08x\n", i, *a, *b, *c, *d, *e, *f, *g, *h );
- }
-
- /* Add chunk to hash and convert back to big-endian */
- for ( i = 0 ; i < 8 ; i++ ) {
- context->ddd.dd.digest.h[i] =
- cpu_to_be32 ( context->ddd.dd.digest.h[i] +
- u.ddd.dd.digest.h[i] );
- }
-
- DBGC ( context, "SHA256 digested:\n" );
- DBGC_HDA ( context, 0, &context->ddd.dd.digest,
- sizeof ( context->ddd.dd.digest ) );
-}
-
-/**
- * Accumulate data with SHA-256 algorithm
- *
- * @v ctx SHA-256 context
- * @v data Data
- * @v len Length of data
- */
-void sha256_update ( void *ctx, const void *data, size_t len ) {
- struct sha256_context *context = ctx;
- const uint8_t *byte = data;
- size_t offset;
-
- /* Accumulate data a byte at a time, performing the digest
- * whenever we fill the data buffer
- */
- while ( len-- ) {
- offset = ( context->len % sizeof ( context->ddd.dd.data ) );
- context->ddd.dd.data.byte[offset] = *(byte++);
- context->len++;
- if ( ( context->len % sizeof ( context->ddd.dd.data ) ) == 0 )
- sha256_digest ( context );
- }
-}
-
-/**
- * Generate SHA-256 digest
- *
- * @v ctx SHA-256 context
- * @v out Output buffer
- */
-void sha256_final ( void *ctx, void *out ) {
- struct sha256_context *context = ctx;
- uint64_t len_bits;
- uint8_t pad;
-
- /* Record length before pre-processing */
- len_bits = cpu_to_be64 ( ( ( uint64_t ) context->len ) * 8 );
-
- /* Pad with a single "1" bit followed by as many "0" bits as required */
- pad = 0x80;
- do {
- sha256_update ( ctx, &pad, sizeof ( pad ) );
- pad = 0x00;
- } while ( ( context->len % sizeof ( context->ddd.dd.data ) ) !=
- offsetof ( typeof ( context->ddd.dd.data ), final.len ) );
-
- /* Append length (in bits) */
- sha256_update ( ctx, &len_bits, sizeof ( len_bits ) );
- assert ( ( context->len % sizeof ( context->ddd.dd.data ) ) == 0 );
-
- /* Copy out final digest */
- memcpy ( out, &context->ddd.dd.digest, context->digestsize );
-}
-
-/** SHA-256 algorithm */
-struct digest_algorithm sha256_algorithm = {
- .name = "sha256",
- .ctxsize = sizeof ( struct sha256_context ),
- .blocksize = sizeof ( union sha256_block ),
- .digestsize = sizeof ( struct sha256_digest ),
- .init = sha256_init,
- .update = sha256_update,
- .final = sha256_final,
-};
-
-/** "sha256" object identifier */
-static uint8_t oid_sha256[] = { ASN1_OID_SHA256 };
-
-/** "sha256" OID-identified algorithm */
-struct asn1_algorithm oid_sha256_algorithm __asn1_algorithm = {
- .name = "sha256",
- .digest = &sha256_algorithm,
- .oid = ASN1_OID_CURSOR ( oid_sha256 ),
-};