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)  * MD5 Message Digest Algorithm (RFC1321).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Derived from cryptoapi implementation, originally based on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * public domain implementation written by Colin Plumb in 1993.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Copyright (c) Cryptoapi developers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * This program is free software; you can redistribute it and/or modify it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * under the terms of the GNU General Public License as published by the Free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * Software Foundation; either version 2 of the License, or (at your option) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <crypto/internal/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <crypto/md5.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) const u8 md5_zero_message_hash[MD5_DIGEST_SIZE] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) EXPORT_SYMBOL_GPL(md5_zero_message_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define F1(x, y, z)	(z ^ (x & (y ^ z)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define F2(x, y, z)	F1(z, x, y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define F3(x, y, z)	(x ^ y ^ z)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define F4(x, y, z)	(y ^ (x | ~z))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define MD5STEP(f, w, x, y, z, in, s) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	(w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static void md5_transform(__u32 *hash, __u32 const *in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	u32 a, b, c, d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	a = hash[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	b = hash[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	c = hash[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	d = hash[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	hash[0] += a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	hash[1] += b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	hash[2] += c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	hash[3] += d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static inline void md5_transform_helper(struct md5_state *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(u32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	md5_transform(ctx->hash, ctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static int md5_init(struct shash_desc *desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	struct md5_state *mctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	mctx->hash[0] = MD5_H0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	mctx->hash[1] = MD5_H1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	mctx->hash[2] = MD5_H2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	mctx->hash[3] = MD5_H3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	mctx->byte_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static int md5_update(struct shash_desc *desc, const u8 *data, unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	struct md5_state *mctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	const u32 avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	mctx->byte_count += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (avail > len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		       data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	       data, avail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	md5_transform_helper(mctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	data += avail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	len -= avail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	while (len >= sizeof(mctx->block)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		memcpy(mctx->block, data, sizeof(mctx->block));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		md5_transform_helper(mctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		data += sizeof(mctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		len -= sizeof(mctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	memcpy(mctx->block, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static int md5_final(struct shash_desc *desc, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	struct md5_state *mctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	const unsigned int offset = mctx->byte_count & 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	char *p = (char *)mctx->block + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	int padding = 56 - (offset + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	*p++ = 0x80;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	if (padding < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		memset(p, 0x00, padding + sizeof (u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		md5_transform_helper(mctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		p = (char *)mctx->block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		padding = 56;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	memset(p, 0, padding);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	mctx->block[14] = mctx->byte_count << 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	mctx->block[15] = mctx->byte_count >> 29;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	le32_to_cpu_array(mctx->block, (sizeof(mctx->block) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	                  sizeof(u64)) / sizeof(u32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	md5_transform(mctx->hash, mctx->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	cpu_to_le32_array(mctx->hash, sizeof(mctx->hash) / sizeof(u32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	memcpy(out, mctx->hash, sizeof(mctx->hash));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	memset(mctx, 0, sizeof(*mctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static int md5_export(struct shash_desc *desc, void *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	struct md5_state *ctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	memcpy(out, ctx, sizeof(*ctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) static int md5_import(struct shash_desc *desc, const void *in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct md5_state *ctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	memcpy(ctx, in, sizeof(*ctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static struct shash_alg alg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	.digestsize	=	MD5_DIGEST_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	.init		=	md5_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	.update		=	md5_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	.final		=	md5_final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	.export		=	md5_export,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	.import		=	md5_import,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	.descsize	=	sizeof(struct md5_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	.statesize	=	sizeof(struct md5_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	.base		=	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		.cra_name	 =	"md5",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		.cra_driver_name =	"md5-generic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		.cra_blocksize	 =	MD5_HMAC_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		.cra_module	 =	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static int __init md5_mod_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	return crypto_register_shash(&alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static void __exit md5_mod_fini(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	crypto_unregister_shash(&alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) subsys_initcall(md5_mod_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) module_exit(md5_mod_fini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) MODULE_DESCRIPTION("MD5 Message Digest Algorithm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) MODULE_ALIAS_CRYPTO("md5");