~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/crypto/sha256_generic.c

Version: ~ [ linux-5.16 ] ~ [ linux-5.15.13 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.90 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.170 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.224 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.261 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.296 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.298 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  * Crypto API wrapper for the generic SHA256 code from lib/crypto/sha256.c
  4  *
  5  * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
  6  * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
  7  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
  8  * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
  9  */
 10 #include <crypto/internal/hash.h>
 11 #include <linux/init.h>
 12 #include <linux/module.h>
 13 #include <linux/mm.h>
 14 #include <linux/types.h>
 15 #include <crypto/sha2.h>
 16 #include <crypto/sha256_base.h>
 17 #include <asm/byteorder.h>
 18 #include <asm/unaligned.h>
 19 
 20 const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE] = {
 21         0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
 22         0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2,
 23         0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4,
 24         0x2f
 25 };
 26 EXPORT_SYMBOL_GPL(sha224_zero_message_hash);
 27 
 28 const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE] = {
 29         0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14,
 30         0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
 31         0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
 32         0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55
 33 };
 34 EXPORT_SYMBOL_GPL(sha256_zero_message_hash);
 35 
 36 static int crypto_sha256_init(struct shash_desc *desc)
 37 {
 38         sha256_init(shash_desc_ctx(desc));
 39         return 0;
 40 }
 41 
 42 static int crypto_sha224_init(struct shash_desc *desc)
 43 {
 44         sha224_init(shash_desc_ctx(desc));
 45         return 0;
 46 }
 47 
 48 int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
 49                           unsigned int len)
 50 {
 51         sha256_update(shash_desc_ctx(desc), data, len);
 52         return 0;
 53 }
 54 EXPORT_SYMBOL(crypto_sha256_update);
 55 
 56 static int crypto_sha256_final(struct shash_desc *desc, u8 *out)
 57 {
 58         if (crypto_shash_digestsize(desc->tfm) == SHA224_DIGEST_SIZE)
 59                 sha224_final(shash_desc_ctx(desc), out);
 60         else
 61                 sha256_final(shash_desc_ctx(desc), out);
 62         return 0;
 63 }
 64 
 65 int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,
 66                         unsigned int len, u8 *hash)
 67 {
 68         sha256_update(shash_desc_ctx(desc), data, len);
 69         return crypto_sha256_final(desc, hash);
 70 }
 71 EXPORT_SYMBOL(crypto_sha256_finup);
 72 
 73 static struct shash_alg sha256_algs[2] = { {
 74         .digestsize     =       SHA256_DIGEST_SIZE,
 75         .init           =       crypto_sha256_init,
 76         .update         =       crypto_sha256_update,
 77         .final          =       crypto_sha256_final,
 78         .finup          =       crypto_sha256_finup,
 79         .descsize       =       sizeof(struct sha256_state),
 80         .base           =       {
 81                 .cra_name       =       "sha256",
 82                 .cra_driver_name=       "sha256-generic",
 83                 .cra_priority   =       100,
 84                 .cra_blocksize  =       SHA256_BLOCK_SIZE,
 85                 .cra_module     =       THIS_MODULE,
 86         }
 87 }, {
 88         .digestsize     =       SHA224_DIGEST_SIZE,
 89         .init           =       crypto_sha224_init,
 90         .update         =       crypto_sha256_update,
 91         .final          =       crypto_sha256_final,
 92         .finup          =       crypto_sha256_finup,
 93         .descsize       =       sizeof(struct sha256_state),
 94         .base           =       {
 95                 .cra_name       =       "sha224",
 96                 .cra_driver_name=       "sha224-generic",
 97                 .cra_priority   =       100,
 98                 .cra_blocksize  =       SHA224_BLOCK_SIZE,
 99                 .cra_module     =       THIS_MODULE,
100         }
101 } };
102 
103 static int __init sha256_generic_mod_init(void)
104 {
105         return crypto_register_shashes(sha256_algs, ARRAY_SIZE(sha256_algs));
106 }
107 
108 static void __exit sha256_generic_mod_fini(void)
109 {
110         crypto_unregister_shashes(sha256_algs, ARRAY_SIZE(sha256_algs));
111 }
112 
113 subsys_initcall(sha256_generic_mod_init);
114 module_exit(sha256_generic_mod_fini);
115 
116 MODULE_LICENSE("GPL");
117 MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm");
118 
119 MODULE_ALIAS_CRYPTO("sha224");
120 MODULE_ALIAS_CRYPTO("sha224-generic");
121 MODULE_ALIAS_CRYPTO("sha256");
122 MODULE_ALIAS_CRYPTO("sha256-generic");
123 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp