digest-sha384.c

海思KEY驱动

/* $Id: digest-sha384.c,v 1.14 2002/10/02 22:02:08 hvr Exp $
 * 
 * SHA-384 code by Jean-Luc Cooke <[e-mail]>.
 *
 * Glue code originally by Andrew McDonald and Alan Smithee, mailed
 * to maintainer on pulped trees.
 *
 * 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, or (at your option) any
 * later version.
 *
 */

#include <linux/module.h> 
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>

#include <asm/uaccess.h>

#include <linux/crypto.h>
#include <linux/wordops.h>

#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
#endif /* MODULE_LICENSE */
#ifdef MODULE_DESCRIPTION
MODULE_DESCRIPTION ("SHA384 Digest / CryptoAPI");
#endif

/* Disabling this will reduce the size of the code by a considerable
   amount, that you might be interested in reclaiming if you require
   smaller code. However, this will come at the cost of some speed. */
/* #define CONFIG_DIGEST_FAST */

typedef struct {
	u64 state[8];
	u32 count[4];
	u8 buf[128];
} sha384_ctx_t;

#define Ch(x,y,z)   ((x & y) ^ (~x & z))
#define Maj(x,y,z)  ((x & y) ^ ( x & z) ^ (y & z))
#define RORu64(x,y) generic_rotr64(x, y)

#define e0(x)       (RORu64(x,28) ^ RORu64(x,34) ^ RORu64(x,39))
#define e1(x)       (RORu64(x,14) ^ RORu64(x,18) ^ RORu64(x,41))
#define s0(x)       (RORu64(x, 1) ^ RORu64(x, 8) ^ (x >> 7))
#define s1(x)       (RORu64(x,19) ^ RORu64(x,61) ^ (x >> 6))


#define LOAD_OP(I)\
 {\
  t1  = input[(8*I)  ] & 0xff;   t1<<=8;\
  t1 |= input[(8*I)+1] & 0xff;   t1<<=8;\
  t1 |= input[(8*I)+2] & 0xff;   t1<<=8;\
  t1 |= input[(8*I)+3] & 0xff;   t1<<=8;\
  t1 |= input[(8*I)+4] & 0xff;   t1<<=8;\
  t1 |= input[(8*I)+5] & 0xff;   t1<<=8;\
  t1 |= input[(8*I)+6] & 0xff;   t1<<=8;\
  t1 |= input[(8*I)+7] & 0xff;\
  W[I] = t1;\
 }
#define BLEND_OP(I) {\
  W[I  ] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];\
}

#if !defined(CONFIG_DIGEST_FAST)
const static u64 sha384_K[80] = {
	0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f,
	0xe9b5dba58189dbbc, 0x3956c25bf348b538, 0x59f111f1b605d019,
	0x923f82a4af194f9b, 0xab1c5ed5da6d8118, 0xd807aa98a3030242,
	0x12835b0145706fbe, 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,
	0x72be5d74f27b896f, 0x80deb1fe3b1696b1, 0x9bdc06a725c71235,
	0xc19bf174cf692694, 0xe49b69c19ef14ad2, 0xefbe4786384f25e3,
	0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65, 0x2de92c6f592b0275,
	0x4a7484aa6ea6e483, 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5,
	0x983e5152ee66dfab, 0xa831c66d2db43210, 0xb00327c898fb213f,
	0xbf597fc7beef0ee4, 0xc6e00bf33da88fc2, 0xd5a79147930aa725,
	0x06ca6351e003826f, 0x142929670a0e6e70, 0x27b70a8546d22ffc,
	0x2e1b21385c26c926, 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df,
	0x650a73548baf63de, 0x766a0abb3c77b2a8, 0x81c2c92e47edaee6,
	0x92722c851482353b, 0xa2bfe8a14cf10364, 0xa81a664bbc423001,
	0xc24b8b70d0f89791, 0xc76c51a30654be30, 0xd192e819d6ef5218,
	0xd69906245565a910, 0xf40e35855771202a, 0x106aa07032bbd1b8,
	0x19a4c116b8d2d0c8, 0x1e376c085141ab53, 0x2748774cdf8eeb99,
	0x34b0bcb5e19b48a8, 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb,
	0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3, 0x748f82ee5defb2fc,
	0x78a5636f43172f60, 0x84c87814a1f0ab72, 0x8cc702081a6439ec,
	0x90befffa23631e28, 0xa4506cebde82bde9, 0xbef9a3f7b2c67915,
	0xc67178f2e372532b, 0xca273eceea26619c, 0xd186b8c721c0c207,
	0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178, 0x06f067aa72176fba,
	0x0a637dc5a2c898a6, 0x113f9804bef90dae, 0x1b710b35131c471b,
	0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc,
	0x431d67c49c100d4c, 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a,
	0x5fcb6fab3ad6faec, 0x6c44198c4a475817,
};
#endif /* WANT_SHA384_SMALL */

static inline void
SHA384Init(sha384_ctx_t *ctx) 
{
  const static sha384_ctx_t initstate = {
    { 0xcbbb9d5dc1059ed8,
      0x629a292a367cd507,
      0x9159015a3070dd17,
      0x152fecd8f70e5939,
      0x67332667ffc00b31,
      0x8eb44a8768581511,
      0xdb0c2e0d64f98fa7,
      0x47b5481dbefa4fa4 }, 
    { 0, },
    { 0, }
  };

  *ctx = initstate;
}

static void
SHA384Transform(u64 *state, const u8 *input)
{
	u64 a, b, c, d, e, f, g, h, t1, t2;
	u64 W[80];

#if !defined(CONFIG_DIGEST_FAST) /* compact code */
	int i;

	/* load the input */
	LOAD_OP( 0); LOAD_OP( 1); LOAD_OP( 2); LOAD_OP( 3);
	LOAD_OP( 4); LOAD_OP( 5); LOAD_OP( 6); LOAD_OP( 7);
	LOAD_OP( 8); LOAD_OP( 9); LOAD_OP(10); LOAD_OP(11);
	LOAD_OP(12); LOAD_OP(13); LOAD_OP(14); LOAD_OP(15);

        /* now blend */
        for (i=16; i<80; i+=8) {
		BLEND_OP(i  ); BLEND_OP(i+1); BLEND_OP(i+2); BLEND_OP(i+3);
		BLEND_OP(i+4); BLEND_OP(i+5); BLEND_OP(i+6); BLEND_OP(i+7);
	}

	/* load the state into our registers */
	a=state[0];   b=state[1];   c=state[2];   d=state[3];  
	e=state[4];   f=state[5];   g=state[6];   h=state[7];  
	
	/* now iterate */
	for (i=0; i<80; i+=8) {
		t1 = h + e1(e) + Ch(e,f,g) + sha384_K[i  ] + W[i  ];
		t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
		t1 = g + e1(d) + Ch(d,e,f) + sha384_K[i+1] + W[i+1];
		t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
		t1 = f + e1(c) + Ch(c,d,e) + sha384_K[i+2] + W[i+2];
		t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
		t1 = e + e1(b) + Ch(b,c,d) + sha384_K[i+3] + W[i+3];
		t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
		t1 = d + e1(a) + Ch(a,b,c) + sha384_K[i+4] + W[i+4];
		t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
		t1 = c + e1(h) + Ch(h,a,b) + sha384_K[i+5] + W[i+5];
		t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
		t1 = b + e1(g) + Ch(g,h,a) + sha384_K[i+6] + W[i+6];
		t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
		t1 = a + e1(f) + Ch(f,g,h) + sha384_K[i+7] + W[i+7];
		t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;
	}
#else /* CONFIG_DIGEST_FAST */
	/* load the input */
	LOAD_OP( 0); LOAD_OP( 1); LOAD_OP( 2); LOAD_OP( 3);
	LOAD_OP( 4); LOAD_OP( 5); LOAD_OP( 6); LOAD_OP( 7);
	LOAD_OP( 8); LOAD_OP( 9); LOAD_OP(10); LOAD_OP(11);
	LOAD_OP(12); LOAD_OP(13); LOAD_OP(14); LOAD_OP(15);

	/* now blend */
	BLEND_OP(16); BLEND_OP(17); BLEND_OP(18); BLEND_OP(19);
	BLEND_OP(20); BLEND_OP(21); BLEND_OP(22); BLEND_OP(23);
	BLEND_OP(24); BLEND_OP(25); BLEND_OP(26); BLEND_OP(27);
	BLEND_OP(28); BLEND_OP(29); BLEND_OP(30); BLEND_OP(31);
	BLEND_OP(32); BLEND_OP(33); BLEND_OP(34); BLEND_OP(35);
	BLEND_OP(36); BLEND_OP(37); BLEND_OP(38); BLEND_OP(39);
	BLEND_OP(40); BLEND_OP(41); BLEND_OP(42); BLEND_OP(43);
	BLEND_OP(44); BLEND_OP(45); BLEND_OP(46); BLEND_OP(47);
	BLEND_OP(48); BLEND_OP(49); BLEND_OP(50); BLEND_OP(51);
	BLEND_OP(52); BLEND_OP(53); BLEND_OP(54); BLEND_OP(55);
	BLEND_OP(56); BLEND_OP(57); BLEND_OP(58); BLEND_OP(59);
	BLEND_OP(60); BLEND_OP(61); BLEND_OP(62); BLEND_OP(63);
	BLEND_OP(64); BLEND_OP(65); BLEND_OP(66); BLEND_OP(67);
	BLEND_OP(68); BLEND_OP(69); BLEND_OP(70); BLEND_OP(71);
	BLEND_OP(72); BLEND_OP(73); BLEND_OP(74); BLEND_OP(75);
	BLEND_OP(76); BLEND_OP(77); BLEND_OP(78); BLEND_OP(79);
    
	/* load the state into our registers */
	a=state[0];   b=state[1];   c=state[2];   d=state[3];  
	e=state[4];   f=state[5];   g=state[6];   h=state[7];  
	
	/* now iterate */
	t1 = h + e1(e) + Ch(e,f,g) + 0x428a2f98d728ae22 + W[ 0];
	t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
	t1 = g + e1(d) + Ch(d,e,f) + 0x7137449123ef65cd + W[ 1];
	t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
	t1 = f + e1(c) + Ch(c,d,e) + 0xb5c0fbcfec4d3b2f + W[ 2];
	t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
	t1 = e + e1(b) + Ch(b,c,d) + 0xe9b5dba58189dbbc + W[ 3];
	t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
	t1 = d + e1(a) + Ch(a,b,c) + 0x3956c25bf348b538 + W[ 4];
	t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
	t1 = c + e1(h) + Ch(h,a,b) + 0x59f111f1b605d019 + W[ 5];
	t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
	t1 = b + e1(g) + Ch(g,h,a) + 0x923f82a4af194f9b + W[ 6];
	t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
	t1 = a + e1(f) + Ch(f,g,h) + 0xab1c5ed5da6d8118 + W[ 7];
	t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;

	t1 = h + e1(e) + Ch(e,f,g) + 0xd807aa98a3030242 + W[ 8];
	t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
	t1 = g + e1(d) + Ch(d,e,f) + 0x12835b0145706fbe + W[ 9];
	t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
	t1 = f + e1(c) + Ch(c,d,e) + 0x243185be4ee4b28c + W[10];
	t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
	t1 = e + e1(b) + Ch(b,c,d) + 0x550c7dc3d5ffb4e2 + W[11];
	t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
	t1 = d + e1(a) + Ch(a,b,c) + 0x72be5d74f27b896f + W[12];
	t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
	t1 = c + e1(h) + Ch(h,a,b) + 0x80deb1fe3b1696b1 + W[13];
	t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
	t1 = b + e1(g) + Ch(g,h,a) + 0x9bdc06a725c71235 + W[14];
	t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
	t1 = a + e1(f) + Ch(f,g,h) + 0xc19bf174cf692694 + W[15];
	t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;

	t1 = h + e1(e) + Ch(e,f,g) + 0xe49b69c19ef14ad2 + W[16];
	t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
	t1 = g + e1(d) + Ch(d,e,f) + 0xefbe4786384f25e3 + W[17];
	t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
	t1 = f + e1(c) + Ch(c,d,e) + 0x0fc19dc68b8cd5b5 + W[18];
	t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
	t1 = e + e1(b) + Ch(b,c,d) + 0x240ca1cc77ac9c65 + W[19];
	t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
	t1 = d + e1(a) + Ch(a,b,c) + 0x2de92c6f592b0275 + W[20];
	t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
	t1 = c + e1(h) + Ch(h,a,b) + 0x4a7484aa6ea6e483 + W[21];
	t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
	t1 = b + e1(g) + Ch(g,h,a) + 0x5cb0a9dcbd41fbd4 + W[22];
	t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
	t1 = a + e1(f) + Ch(f,g,h) + 0x76f988da831153b5 + W[23];
	t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;

	t1 = h + e1(e) + Ch(e,f,g) + 0x983e5152ee66dfab + W[24];
	t2 = e0(a) + Maj(a,b,c);    d+=t1;    h=t1+t2;
	t1 = g + e1(d) + Ch(d,e,f) + 0xa831c66d2db43210 + W[25];
	t2 = e0(h) + Maj(h,a,b);    c+=t1;    g=t1+t2;
	t1 = f + e1(c) + Ch(c,d,e) + 0xb00327c898fb213f + W[26];
	t2 = e0(g) + Maj(g,h,a);    b+=t1;    f=t1+t2;
	t1 = e + e1(b) + Ch(b,c,d) + 0xbf597fc7beef0ee4 + W[27];
	t2 = e0(f) + Maj(f,g,h);    a+=t1;    e=t1+t2;
	t1 = d + e1(a) + Ch(a,b,c) + 0xc6e00bf33da88fc2 + W[28];
	t2 = e0(e) + Maj(e,f,g);    h+=t1;    d=t1+t2;
	t1 = c + e1(h) + Ch(h,a,b) + 0xd5a79147930aa725 + W[29];
	t2 = e0(d) + Maj(d,e,f);    g+=t1;    c=t1+t2;
	t1 = b + e1(g) + Ch(g,h,a) + 0x06ca6351e003826f + W[30];
	t2 = e0(c) + Maj(c,d,e);    f+=t1;    b=t1+t2;
	t1 = a + e1(f) + Ch(f,g,h) + 0x142929670a0e6e70 + W[31];
	t2 = e0(b) + Maj(b,c,d);    e+=t1;    a=t1+t2;

	t1 = h + e1(e) + Ch(e,f,g) + 0x27b70a8546d22ffc + W[32];