iPXE
sha512_256.c
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1 /*
2  * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of the
7  * License, or any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  * 02110-1301, USA.
18  *
19  * You can also choose to distribute this program under the terms of
20  * the Unmodified Binary Distribution Licence (as given in the file
21  * COPYING.UBDL), provided that you have satisfied its requirements.
22  */
23 
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25 
26 /** @file
27  *
28  * SHA-512/256 algorithm
29  *
30  */
31 
32 #include <stdint.h>
33 #include <byteswap.h>
34 #include <ipxe/crypto.h>
35 #include <ipxe/asn1.h>
36 #include <ipxe/sha512.h>
37 
38 /** SHA-512/256 initial digest values */
39 static const struct sha512_digest sha512_256_init_digest = {
40  .h = {
41  cpu_to_be64 ( 0x22312194fc2bf72cULL ),
42  cpu_to_be64 ( 0x9f555fa3c84c64c2ULL ),
43  cpu_to_be64 ( 0x2393b86b6f53b151ULL ),
44  cpu_to_be64 ( 0x963877195940eabdULL ),
45  cpu_to_be64 ( 0x96283ee2a88effe3ULL ),
46  cpu_to_be64 ( 0xbe5e1e2553863992ULL ),
47  cpu_to_be64 ( 0x2b0199fc2c85b8aaULL ),
48  cpu_to_be64 ( 0x0eb72ddc81c52ca2ULL ),
49  },
50 };
51 
52 /**
53  * Initialise SHA-512/256 algorithm
54  *
55  * @v ctx SHA-512/256 context
56  */
57 static void sha512_256_init ( void *ctx ) {
58  struct sha512_context *context = ctx;
59 
62 }
63 
64 /** SHA-512/256 algorithm */
66  .name = "sha512/256",
67  .ctxsize = sizeof ( struct sha512_context ),
68  .blocksize = sizeof ( union sha512_block ),
70  .init = sha512_256_init,
71  .update = sha512_update,
72  .final = sha512_final,
73 };
74 
75 /** "sha512_256" object identifier */
77 
78 /** "sha512_256" OID-identified algorithm */
79 struct asn1_algorithm oid_sha512_256_algorithm __asn1_algorithm = {
80  .name = "sha512/256",
81  .digest = &sha512_256_algorithm,
83 };
void sha512_update(void *ctx, const void *data, size_t len)
Accumulate data with SHA-512 algorithm.
Definition: sha512.c:234
void sha512_final(void *ctx, void *out)
Generate SHA-512 digest.
Definition: sha512.c:257
An ASN.1 OID-identified algorithm.
Definition: asn1.h:298
#define SHA512_256_DIGEST_SIZE
SHA-512/256 digest size.
Definition: sha512.h:82
static uint8_t oid_sha512_256[]
"sha512_256" object identifier
Definition: sha512_256.c:76
Cryptographic API.
struct golan_eq_context ctx
Definition: CIB_PRM.h:28
static void sha512_256_init(void *ctx)
Initialise SHA-512/256 algorithm.
Definition: sha512_256.c:57
ASN.1 encoding.
#define ASN1_OID_CURSOR(oid_value)
Define an ASN.1 cursor containing an OID.
Definition: asn1.h:292
An SHA-512 context.
Definition: sha512.h:63
An SHA-512 digest.
Definition: sha512.h:19
unsigned char uint8_t
Definition: stdint.h:10
struct asn1_algorithm oid_sha512_256_algorithm __asn1_algorithm
"sha512_256" OID-identified algorithm
Definition: sha512_256.c:79
#define ASN1_OID_SHA512_256
ASN.1 OID for id-sha512-256 (2.16.840.1.101.3.4.2.6)
Definition: asn1.h:218
An SHA-512 data block.
Definition: sha512.h:25
uint64_t h[8]
Hash output.
Definition: sha512.h:21
struct digest_algorithm sha512_256_algorithm
SHA-512/256 algorithm.
Definition: sha512_256.c:65
const char * name
Name.
Definition: asn1.h:300
const char * name
Algorithm name.
Definition: crypto.h:18
SHA-512 algorithm.
A message digest algorithm.
Definition: crypto.h:16
#define cpu_to_be64(value)
Definition: byteswap.h:111
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
uint32_t digestsize
Digest size (i.e.
Definition: pccrr.h:14
static const struct sha512_digest sha512_256_init_digest
SHA-512/256 initial digest values.
Definition: sha512_256.c:39
void sha512_family_init(struct sha512_context *context, const struct sha512_digest *init, size_t digestsize)
Initialise SHA-512 family algorithm.
Definition: sha512.c:109