Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * Cryptographic API.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * MD4 Message Digest Algorithm (RFC1320).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Implementation derived from Andrew Tridgell and Steve French's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * CIFS MD4 implementation, and the cryptoapi implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * originally based on the public domain implementation written
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * by Colin Plumb in 1993.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Copyright (c) Andrew Tridgell 1997-1998.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * Modified by Steve French (sfrench@us.ibm.com) 2002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * Copyright (c) Cryptoapi developers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * Copyright (c) 2002 David S. Miller (davem@redhat.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * This program is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * the Free Software Foundation; either version 2 of the License, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <crypto/internal/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define MD4_DIGEST_SIZE		16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define MD4_HMAC_BLOCK_SIZE	64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define MD4_BLOCK_WORDS		16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define MD4_HASH_WORDS		4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) struct md4_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	u32 hash[MD4_HASH_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	u32 block[MD4_BLOCK_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	u64 byte_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) static inline u32 lshift(u32 x, unsigned int s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	x &= 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	return ((x << s) & 0xFFFFFFFF) | (x >> (32 - s));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static inline u32 F(u32 x, u32 y, u32 z)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	return (x & y) | ((~x) & z);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static inline u32 G(u32 x, u32 y, u32 z)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	return (x & y) | (x & z) | (y & z);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) static inline u32 H(u32 x, u32 y, u32 z)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	return x ^ y ^ z;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) #define ROUND1(a,b,c,d,k,s) (a = lshift(a + F(b,c,d) + k, s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define ROUND2(a,b,c,d,k,s) (a = lshift(a + G(b,c,d) + k + (u32)0x5A827999,s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) #define ROUND3(a,b,c,d,k,s) (a = lshift(a + H(b,c,d) + k + (u32)0x6ED9EBA1,s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static void md4_transform(u32 *hash, u32 const *in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	u32 a, b, c, d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	a = hash[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	b = hash[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	c = hash[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	d = hash[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	ROUND1(a, b, c, d, in[0], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	ROUND1(d, a, b, c, in[1], 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	ROUND1(c, d, a, b, in[2], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	ROUND1(b, c, d, a, in[3], 19);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	ROUND1(a, b, c, d, in[4], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	ROUND1(d, a, b, c, in[5], 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	ROUND1(c, d, a, b, in[6], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	ROUND1(b, c, d, a, in[7], 19);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	ROUND1(a, b, c, d, in[8], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	ROUND1(d, a, b, c, in[9], 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	ROUND1(c, d, a, b, in[10], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	ROUND1(b, c, d, a, in[11], 19);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	ROUND1(a, b, c, d, in[12], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	ROUND1(d, a, b, c, in[13], 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	ROUND1(c, d, a, b, in[14], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	ROUND1(b, c, d, a, in[15], 19);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	ROUND2(a, b, c, d,in[ 0], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	ROUND2(d, a, b, c, in[4], 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	ROUND2(c, d, a, b, in[8], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	ROUND2(b, c, d, a, in[12], 13);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	ROUND2(a, b, c, d, in[1], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	ROUND2(d, a, b, c, in[5], 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	ROUND2(c, d, a, b, in[9], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	ROUND2(b, c, d, a, in[13], 13);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	ROUND2(a, b, c, d, in[2], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	ROUND2(d, a, b, c, in[6], 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	ROUND2(c, d, a, b, in[10], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	ROUND2(b, c, d, a, in[14], 13);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	ROUND2(a, b, c, d, in[3], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	ROUND2(d, a, b, c, in[7], 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	ROUND2(c, d, a, b, in[11], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	ROUND2(b, c, d, a, in[15], 13);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	ROUND3(a, b, c, d,in[ 0], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	ROUND3(d, a, b, c, in[8], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	ROUND3(c, d, a, b, in[4], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	ROUND3(b, c, d, a, in[12], 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	ROUND3(a, b, c, d, in[2], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	ROUND3(d, a, b, c, in[10], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	ROUND3(c, d, a, b, in[6], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	ROUND3(b, c, d, a, in[14], 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	ROUND3(a, b, c, d, in[1], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	ROUND3(d, a, b, c, in[9], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	ROUND3(c, d, a, b, in[5], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	ROUND3(b, c, d, a, in[13], 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	ROUND3(a, b, c, d, in[3], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	ROUND3(d, a, b, c, in[11], 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	ROUND3(c, d, a, b, in[7], 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	ROUND3(b, c, d, a, in[15], 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	hash[0] += a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	hash[1] += b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	hash[2] += c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	hash[3] += d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static inline void md4_transform_helper(struct md4_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	le32_to_cpu_array(ctx->block, ARRAY_SIZE(ctx->block));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	md4_transform(ctx->hash, ctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static int md4_init(struct shash_desc *desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	struct md4_ctx *mctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	mctx->hash[0] = 0x67452301;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	mctx->hash[1] = 0xefcdab89;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	mctx->hash[2] = 0x98badcfe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	mctx->hash[3] = 0x10325476;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	mctx->byte_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static int md4_update(struct shash_desc *desc, const u8 *data, unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	struct md4_ctx *mctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	const u32 avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	mctx->byte_count += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	if (avail > len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		       data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	       data, avail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	md4_transform_helper(mctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	data += avail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	len -= avail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	while (len >= sizeof(mctx->block)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		memcpy(mctx->block, data, sizeof(mctx->block));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		md4_transform_helper(mctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		data += sizeof(mctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		len -= sizeof(mctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	memcpy(mctx->block, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int md4_final(struct shash_desc *desc, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	struct md4_ctx *mctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	const unsigned int offset = mctx->byte_count & 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	char *p = (char *)mctx->block + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	int padding = 56 - (offset + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	*p++ = 0x80;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	if (padding < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		memset(p, 0x00, padding + sizeof (u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		md4_transform_helper(mctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		p = (char *)mctx->block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		padding = 56;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	memset(p, 0, padding);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	mctx->block[14] = mctx->byte_count << 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	mctx->block[15] = mctx->byte_count >> 29;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	le32_to_cpu_array(mctx->block, (sizeof(mctx->block) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	                  sizeof(u64)) / sizeof(u32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	md4_transform(mctx->hash, mctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	cpu_to_le32_array(mctx->hash, ARRAY_SIZE(mctx->hash));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	memcpy(out, mctx->hash, sizeof(mctx->hash));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	memset(mctx, 0, sizeof(*mctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static struct shash_alg alg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	.digestsize	=	MD4_DIGEST_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	.init		=	md4_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	.update		=	md4_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	.final		=	md4_final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	.descsize	=	sizeof(struct md4_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	.base		=	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		.cra_name	 =	"md4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		.cra_driver_name =	"md4-generic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		.cra_blocksize	 =	MD4_HMAC_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		.cra_module	 =	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int __init md4_mod_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	return crypto_register_shash(&alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) static void __exit md4_mod_fini(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	crypto_unregister_shash(&alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) subsys_initcall(md4_mod_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) module_exit(md4_mod_fini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) MODULE_DESCRIPTION("MD4 Message Digest Algorithm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) MODULE_ALIAS_CRYPTO("md4");