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TOMOYO Linux Cross Reference
Linux/crypto/sha256_generic.c

Version: ~ [ linux-6.12-rc7 ] ~ [ linux-6.11.7 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.60 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.116 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.171 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.229 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.285 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.323 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.12 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

Diff markup

Differences between /crypto/sha256_generic.c (Version linux-6.12-rc7) and /crypto/sha256_generic.c (Version linux-4.11.12)


  1 // SPDX-License-Identifier: GPL-2.0-or-later   << 
  2 /*                                                  1 /*
  3  * Crypto API wrapper for the generic SHA256 c !!   2  * Cryptographic API.
                                                   >>   3  *
                                                   >>   4  * SHA-256, as specified in
                                                   >>   5  * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
                                                   >>   6  *
                                                   >>   7  * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
  4  *                                                  8  *
  5  * Copyright (c) Jean-Luc Cooke <jlcooke@certa      9  * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
  6  * Copyright (c) Andrew McDonald <andrew@mcdon     10  * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
  7  * Copyright (c) 2002 James Morris <jmorris@in     11  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
  8  * SHA224 Support Copyright 2007 Intel Corpora     12  * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
                                                   >>  13  *
                                                   >>  14  * This program is free software; you can redistribute it and/or modify it
                                                   >>  15  * under the terms of the GNU General Public License as published by the Free
                                                   >>  16  * Software Foundation; either version 2 of the License, or (at your option) 
                                                   >>  17  * any later version.
                                                   >>  18  *
  9  */                                                19  */
 10 #include <crypto/internal/hash.h>                  20 #include <crypto/internal/hash.h>
 11 #include <linux/init.h>                            21 #include <linux/init.h>
 12 #include <linux/module.h>                          22 #include <linux/module.h>
 13 #include <linux/mm.h>                              23 #include <linux/mm.h>
 14 #include <linux/types.h>                           24 #include <linux/types.h>
 15 #include <crypto/sha2.h>                       !!  25 #include <crypto/sha.h>
 16 #include <crypto/sha256_base.h>                    26 #include <crypto/sha256_base.h>
 17 #include <asm/byteorder.h>                         27 #include <asm/byteorder.h>
 18 #include <linux/unaligned.h>                   !!  28 #include <asm/unaligned.h>
 19                                                    29 
 20 const u8 sha224_zero_message_hash[SHA224_DIGES     30 const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE] = {
 21         0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x     31         0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
 22         0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0x     32         0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2,
 23         0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0x     33         0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4,
 24         0x2f                                       34         0x2f
 25 };                                                 35 };
 26 EXPORT_SYMBOL_GPL(sha224_zero_message_hash);       36 EXPORT_SYMBOL_GPL(sha224_zero_message_hash);
 27                                                    37 
 28 const u8 sha256_zero_message_hash[SHA256_DIGES     38 const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE] = {
 29         0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x     39         0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14,
 30         0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0x     40         0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
 31         0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x     41         0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
 32         0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0x     42         0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55
 33 };                                                 43 };
 34 EXPORT_SYMBOL_GPL(sha256_zero_message_hash);       44 EXPORT_SYMBOL_GPL(sha256_zero_message_hash);
 35                                                    45 
                                                   >>  46 static inline u32 Ch(u32 x, u32 y, u32 z)
                                                   >>  47 {
                                                   >>  48         return z ^ (x & (y ^ z));
                                                   >>  49 }
                                                   >>  50 
                                                   >>  51 static inline u32 Maj(u32 x, u32 y, u32 z)
                                                   >>  52 {
                                                   >>  53         return (x & y) | (z & (x | y));
                                                   >>  54 }
                                                   >>  55 
                                                   >>  56 #define e0(x)       (ror32(x, 2) ^ ror32(x,13) ^ ror32(x,22))
                                                   >>  57 #define e1(x)       (ror32(x, 6) ^ ror32(x,11) ^ ror32(x,25))
                                                   >>  58 #define s0(x)       (ror32(x, 7) ^ ror32(x,18) ^ (x >> 3))
                                                   >>  59 #define s1(x)       (ror32(x,17) ^ ror32(x,19) ^ (x >> 10))
                                                   >>  60 
                                                   >>  61 static inline void LOAD_OP(int I, u32 *W, const u8 *input)
                                                   >>  62 {
                                                   >>  63         W[I] = get_unaligned_be32((__u32 *)input + I);
                                                   >>  64 }
                                                   >>  65 
                                                   >>  66 static inline void BLEND_OP(int I, u32 *W)
                                                   >>  67 {
                                                   >>  68         W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
                                                   >>  69 }
                                                   >>  70 
                                                   >>  71 static void sha256_transform(u32 *state, const u8 *input)
                                                   >>  72 {
                                                   >>  73         u32 a, b, c, d, e, f, g, h, t1, t2;
                                                   >>  74         u32 W[64];
                                                   >>  75         int i;
                                                   >>  76 
                                                   >>  77         /* load the input */
                                                   >>  78         for (i = 0; i < 16; i++)
                                                   >>  79                 LOAD_OP(i, W, input);
                                                   >>  80 
                                                   >>  81         /* now blend */
                                                   >>  82         for (i = 16; i < 64; i++)
                                                   >>  83                 BLEND_OP(i, W);
                                                   >>  84 
                                                   >>  85         /* load the state into our registers */
                                                   >>  86         a=state[0];  b=state[1];  c=state[2];  d=state[3];
                                                   >>  87         e=state[4];  f=state[5];  g=state[6];  h=state[7];
                                                   >>  88 
                                                   >>  89         /* now iterate */
                                                   >>  90         t1 = h + e1(e) + Ch(e,f,g) + 0x428a2f98 + W[ 0];
                                                   >>  91         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >>  92         t1 = g + e1(d) + Ch(d,e,f) + 0x71374491 + W[ 1];
                                                   >>  93         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >>  94         t1 = f + e1(c) + Ch(c,d,e) + 0xb5c0fbcf + W[ 2];
                                                   >>  95         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >>  96         t1 = e + e1(b) + Ch(b,c,d) + 0xe9b5dba5 + W[ 3];
                                                   >>  97         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >>  98         t1 = d + e1(a) + Ch(a,b,c) + 0x3956c25b + W[ 4];
                                                   >>  99         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 100         t1 = c + e1(h) + Ch(h,a,b) + 0x59f111f1 + W[ 5];
                                                   >> 101         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 102         t1 = b + e1(g) + Ch(g,h,a) + 0x923f82a4 + W[ 6];
                                                   >> 103         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 104         t1 = a + e1(f) + Ch(f,g,h) + 0xab1c5ed5 + W[ 7];
                                                   >> 105         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 106 
                                                   >> 107         t1 = h + e1(e) + Ch(e,f,g) + 0xd807aa98 + W[ 8];
                                                   >> 108         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >> 109         t1 = g + e1(d) + Ch(d,e,f) + 0x12835b01 + W[ 9];
                                                   >> 110         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >> 111         t1 = f + e1(c) + Ch(c,d,e) + 0x243185be + W[10];
                                                   >> 112         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >> 113         t1 = e + e1(b) + Ch(b,c,d) + 0x550c7dc3 + W[11];
                                                   >> 114         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >> 115         t1 = d + e1(a) + Ch(a,b,c) + 0x72be5d74 + W[12];
                                                   >> 116         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 117         t1 = c + e1(h) + Ch(h,a,b) + 0x80deb1fe + W[13];
                                                   >> 118         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 119         t1 = b + e1(g) + Ch(g,h,a) + 0x9bdc06a7 + W[14];
                                                   >> 120         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 121         t1 = a + e1(f) + Ch(f,g,h) + 0xc19bf174 + W[15];
                                                   >> 122         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 123 
                                                   >> 124         t1 = h + e1(e) + Ch(e,f,g) + 0xe49b69c1 + W[16];
                                                   >> 125         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >> 126         t1 = g + e1(d) + Ch(d,e,f) + 0xefbe4786 + W[17];
                                                   >> 127         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >> 128         t1 = f + e1(c) + Ch(c,d,e) + 0x0fc19dc6 + W[18];
                                                   >> 129         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >> 130         t1 = e + e1(b) + Ch(b,c,d) + 0x240ca1cc + W[19];
                                                   >> 131         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >> 132         t1 = d + e1(a) + Ch(a,b,c) + 0x2de92c6f + W[20];
                                                   >> 133         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 134         t1 = c + e1(h) + Ch(h,a,b) + 0x4a7484aa + W[21];
                                                   >> 135         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 136         t1 = b + e1(g) + Ch(g,h,a) + 0x5cb0a9dc + W[22];
                                                   >> 137         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 138         t1 = a + e1(f) + Ch(f,g,h) + 0x76f988da + W[23];
                                                   >> 139         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 140 
                                                   >> 141         t1 = h + e1(e) + Ch(e,f,g) + 0x983e5152 + W[24];
                                                   >> 142         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >> 143         t1 = g + e1(d) + Ch(d,e,f) + 0xa831c66d + W[25];
                                                   >> 144         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >> 145         t1 = f + e1(c) + Ch(c,d,e) + 0xb00327c8 + W[26];
                                                   >> 146         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >> 147         t1 = e + e1(b) + Ch(b,c,d) + 0xbf597fc7 + W[27];
                                                   >> 148         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >> 149         t1 = d + e1(a) + Ch(a,b,c) + 0xc6e00bf3 + W[28];
                                                   >> 150         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 151         t1 = c + e1(h) + Ch(h,a,b) + 0xd5a79147 + W[29];
                                                   >> 152         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 153         t1 = b + e1(g) + Ch(g,h,a) + 0x06ca6351 + W[30];
                                                   >> 154         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 155         t1 = a + e1(f) + Ch(f,g,h) + 0x14292967 + W[31];
                                                   >> 156         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 157 
                                                   >> 158         t1 = h + e1(e) + Ch(e,f,g) + 0x27b70a85 + W[32];
                                                   >> 159         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >> 160         t1 = g + e1(d) + Ch(d,e,f) + 0x2e1b2138 + W[33];
                                                   >> 161         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >> 162         t1 = f + e1(c) + Ch(c,d,e) + 0x4d2c6dfc + W[34];
                                                   >> 163         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >> 164         t1 = e + e1(b) + Ch(b,c,d) + 0x53380d13 + W[35];
                                                   >> 165         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >> 166         t1 = d + e1(a) + Ch(a,b,c) + 0x650a7354 + W[36];
                                                   >> 167         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 168         t1 = c + e1(h) + Ch(h,a,b) + 0x766a0abb + W[37];
                                                   >> 169         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 170         t1 = b + e1(g) + Ch(g,h,a) + 0x81c2c92e + W[38];
                                                   >> 171         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 172         t1 = a + e1(f) + Ch(f,g,h) + 0x92722c85 + W[39];
                                                   >> 173         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 174 
                                                   >> 175         t1 = h + e1(e) + Ch(e,f,g) + 0xa2bfe8a1 + W[40];
                                                   >> 176         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >> 177         t1 = g + e1(d) + Ch(d,e,f) + 0xa81a664b + W[41];
                                                   >> 178         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >> 179         t1 = f + e1(c) + Ch(c,d,e) + 0xc24b8b70 + W[42];
                                                   >> 180         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >> 181         t1 = e + e1(b) + Ch(b,c,d) + 0xc76c51a3 + W[43];
                                                   >> 182         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >> 183         t1 = d + e1(a) + Ch(a,b,c) + 0xd192e819 + W[44];
                                                   >> 184         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 185         t1 = c + e1(h) + Ch(h,a,b) + 0xd6990624 + W[45];
                                                   >> 186         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 187         t1 = b + e1(g) + Ch(g,h,a) + 0xf40e3585 + W[46];
                                                   >> 188         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 189         t1 = a + e1(f) + Ch(f,g,h) + 0x106aa070 + W[47];
                                                   >> 190         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 191 
                                                   >> 192         t1 = h + e1(e) + Ch(e,f,g) + 0x19a4c116 + W[48];
                                                   >> 193         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >> 194         t1 = g + e1(d) + Ch(d,e,f) + 0x1e376c08 + W[49];
                                                   >> 195         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >> 196         t1 = f + e1(c) + Ch(c,d,e) + 0x2748774c + W[50];
                                                   >> 197         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >> 198         t1 = e + e1(b) + Ch(b,c,d) + 0x34b0bcb5 + W[51];
                                                   >> 199         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >> 200         t1 = d + e1(a) + Ch(a,b,c) + 0x391c0cb3 + W[52];
                                                   >> 201         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 202         t1 = c + e1(h) + Ch(h,a,b) + 0x4ed8aa4a + W[53];
                                                   >> 203         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 204         t1 = b + e1(g) + Ch(g,h,a) + 0x5b9cca4f + W[54];
                                                   >> 205         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 206         t1 = a + e1(f) + Ch(f,g,h) + 0x682e6ff3 + W[55];
                                                   >> 207         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 208 
                                                   >> 209         t1 = h + e1(e) + Ch(e,f,g) + 0x748f82ee + W[56];
                                                   >> 210         t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
                                                   >> 211         t1 = g + e1(d) + Ch(d,e,f) + 0x78a5636f + W[57];
                                                   >> 212         t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
                                                   >> 213         t1 = f + e1(c) + Ch(c,d,e) + 0x84c87814 + W[58];
                                                   >> 214         t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
                                                   >> 215         t1 = e + e1(b) + Ch(b,c,d) + 0x8cc70208 + W[59];
                                                   >> 216         t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
                                                   >> 217         t1 = d + e1(a) + Ch(a,b,c) + 0x90befffa + W[60];
                                                   >> 218         t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
                                                   >> 219         t1 = c + e1(h) + Ch(h,a,b) + 0xa4506ceb + W[61];
                                                   >> 220         t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
                                                   >> 221         t1 = b + e1(g) + Ch(g,h,a) + 0xbef9a3f7 + W[62];
                                                   >> 222         t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
                                                   >> 223         t1 = a + e1(f) + Ch(f,g,h) + 0xc67178f2 + W[63];
                                                   >> 224         t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
                                                   >> 225 
                                                   >> 226         state[0] += a; state[1] += b; state[2] += c; state[3] += d;
                                                   >> 227         state[4] += e; state[5] += f; state[6] += g; state[7] += h;
                                                   >> 228 
                                                   >> 229         /* clear any sensitive info... */
                                                   >> 230         a = b = c = d = e = f = g = h = t1 = t2 = 0;
                                                   >> 231         memzero_explicit(W, 64 * sizeof(u32));
                                                   >> 232 }
                                                   >> 233 
                                                   >> 234 static void sha256_generic_block_fn(struct sha256_state *sst, u8 const *src,
                                                   >> 235                                     int blocks)
                                                   >> 236 {
                                                   >> 237         while (blocks--) {
                                                   >> 238                 sha256_transform(sst->state, src);
                                                   >> 239                 src += SHA256_BLOCK_SIZE;
                                                   >> 240         }
                                                   >> 241 }
                                                   >> 242 
 36 int crypto_sha256_update(struct shash_desc *de    243 int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
 37                           unsigned int len)       244                           unsigned int len)
 38 {                                                 245 {
 39         sha256_update(shash_desc_ctx(desc), da !! 246         return sha256_base_do_update(desc, data, len, sha256_generic_block_fn);
 40         return 0;                              << 
 41 }                                                 247 }
 42 EXPORT_SYMBOL(crypto_sha256_update);              248 EXPORT_SYMBOL(crypto_sha256_update);
 43                                                   249 
 44 static int crypto_sha256_final(struct shash_de !! 250 static int sha256_final(struct shash_desc *desc, u8 *out)
 45 {                                                 251 {
 46         if (crypto_shash_digestsize(desc->tfm) !! 252         sha256_base_do_finalize(desc, sha256_generic_block_fn);
 47                 sha224_final(shash_desc_ctx(de !! 253         return sha256_base_finish(desc, out);
 48         else                                   << 
 49                 sha256_final(shash_desc_ctx(de << 
 50         return 0;                              << 
 51 }                                                 254 }
 52                                                   255 
 53 int crypto_sha256_finup(struct shash_desc *des    256 int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,
 54                         unsigned int len, u8 *    257                         unsigned int len, u8 *hash)
 55 {                                                 258 {
 56         sha256_update(shash_desc_ctx(desc), da !! 259         sha256_base_do_update(desc, data, len, sha256_generic_block_fn);
 57         return crypto_sha256_final(desc, hash) !! 260         return sha256_final(desc, hash);
 58 }                                                 261 }
 59 EXPORT_SYMBOL(crypto_sha256_finup);               262 EXPORT_SYMBOL(crypto_sha256_finup);
 60                                                   263 
 61 static struct shash_alg sha256_algs[2] = { {      264 static struct shash_alg sha256_algs[2] = { {
 62         .digestsize     =       SHA256_DIGEST_    265         .digestsize     =       SHA256_DIGEST_SIZE,
 63         .init           =       sha256_base_in    266         .init           =       sha256_base_init,
 64         .update         =       crypto_sha256_    267         .update         =       crypto_sha256_update,
 65         .final          =       crypto_sha256_ !! 268         .final          =       sha256_final,
 66         .finup          =       crypto_sha256_    269         .finup          =       crypto_sha256_finup,
 67         .descsize       =       sizeof(struct     270         .descsize       =       sizeof(struct sha256_state),
 68         .base           =       {                 271         .base           =       {
 69                 .cra_name       =       "sha25    272                 .cra_name       =       "sha256",
 70                 .cra_driver_name=       "sha25    273                 .cra_driver_name=       "sha256-generic",
 71                 .cra_priority   =       100,   !! 274                 .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
 72                 .cra_blocksize  =       SHA256    275                 .cra_blocksize  =       SHA256_BLOCK_SIZE,
 73                 .cra_module     =       THIS_M    276                 .cra_module     =       THIS_MODULE,
 74         }                                         277         }
 75 }, {                                              278 }, {
 76         .digestsize     =       SHA224_DIGEST_    279         .digestsize     =       SHA224_DIGEST_SIZE,
 77         .init           =       sha224_base_in    280         .init           =       sha224_base_init,
 78         .update         =       crypto_sha256_    281         .update         =       crypto_sha256_update,
 79         .final          =       crypto_sha256_ !! 282         .final          =       sha256_final,
 80         .finup          =       crypto_sha256_    283         .finup          =       crypto_sha256_finup,
 81         .descsize       =       sizeof(struct     284         .descsize       =       sizeof(struct sha256_state),
 82         .base           =       {                 285         .base           =       {
 83                 .cra_name       =       "sha22    286                 .cra_name       =       "sha224",
 84                 .cra_driver_name=       "sha22    287                 .cra_driver_name=       "sha224-generic",
 85                 .cra_priority   =       100,   !! 288                 .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
 86                 .cra_blocksize  =       SHA224    289                 .cra_blocksize  =       SHA224_BLOCK_SIZE,
 87                 .cra_module     =       THIS_M    290                 .cra_module     =       THIS_MODULE,
 88         }                                         291         }
 89 } };                                              292 } };
 90                                                   293 
 91 static int __init sha256_generic_mod_init(void    294 static int __init sha256_generic_mod_init(void)
 92 {                                                 295 {
 93         return crypto_register_shashes(sha256_    296         return crypto_register_shashes(sha256_algs, ARRAY_SIZE(sha256_algs));
 94 }                                                 297 }
 95                                                   298 
 96 static void __exit sha256_generic_mod_fini(voi    299 static void __exit sha256_generic_mod_fini(void)
 97 {                                                 300 {
 98         crypto_unregister_shashes(sha256_algs,    301         crypto_unregister_shashes(sha256_algs, ARRAY_SIZE(sha256_algs));
 99 }                                                 302 }
100                                                   303 
101 subsys_initcall(sha256_generic_mod_init);      !! 304 module_init(sha256_generic_mod_init);
102 module_exit(sha256_generic_mod_fini);             305 module_exit(sha256_generic_mod_fini);
103                                                   306 
104 MODULE_LICENSE("GPL");                            307 MODULE_LICENSE("GPL");
105 MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure    308 MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm");
106                                                   309 
107 MODULE_ALIAS_CRYPTO("sha224");                    310 MODULE_ALIAS_CRYPTO("sha224");
108 MODULE_ALIAS_CRYPTO("sha224-generic");            311 MODULE_ALIAS_CRYPTO("sha224-generic");
109 MODULE_ALIAS_CRYPTO("sha256");                    312 MODULE_ALIAS_CRYPTO("sha256");
110 MODULE_ALIAS_CRYPTO("sha256-generic");            313 MODULE_ALIAS_CRYPTO("sha256-generic");
111                                                   314 

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