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crypto/rmd320.c
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/* * Cryptographic API. * * RIPEMD-320 - RACE Integrity Primitives Evaluation Message Digest. * * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC * * Copyright (c) 2008 Adrian-Ken Rueegsegger <rueegsegger (at) swiss-it.ch> * * 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 of the License, or (at your option) * any later version. * */ |
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#include <crypto/internal/hash.h> |
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#include <linux/init.h> #include <linux/module.h> #include <linux/mm.h> |
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#include <linux/types.h> #include <asm/byteorder.h> #include "ripemd.h" struct rmd320_ctx { u64 byte_count; u32 state[10]; |
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__le32 buffer[16]; |
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}; #define K1 RMD_K1 #define K2 RMD_K2 #define K3 RMD_K3 #define K4 RMD_K4 #define K5 RMD_K5 #define KK1 RMD_K6 #define KK2 RMD_K7 #define KK3 RMD_K8 #define KK4 RMD_K9 #define KK5 RMD_K1 #define F1(x, y, z) (x ^ y ^ z) /* XOR */ #define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */ #define F3(x, y, z) ((x | ~y) ^ z) #define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */ #define F5(x, y, z) (x ^ (y | ~z)) #define ROUND(a, b, c, d, e, f, k, x, s) { \ |
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(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \ |
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(a) = rol32((a), (s)) + (e); \ (c) = rol32((c), 10); \ } |
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static void rmd320_transform(u32 *state, const __le32 *in) |
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{ u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee, tmp; /* Initialize left lane */ aa = state[0]; bb = state[1]; cc = state[2]; dd = state[3]; ee = state[4]; /* Initialize right lane */ aaa = state[5]; bbb = state[6]; ccc = state[7]; ddd = state[8]; eee = state[9]; /* round 1: left lane */ ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11); ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14); ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15); ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12); ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5); ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8); ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7); ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9); ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11); ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13); ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14); ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15); ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6); ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7); ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9); ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8); /* round 1: right lane */ ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8); ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9); ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9); ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11); ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13); ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15); ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15); ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5); ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7); ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7); ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8); ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11); ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14); ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14); ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12); ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6); /* Swap contents of "a" registers */ tmp = aa; aa = aaa; aaa = tmp; /* round 2: left lane" */ ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7); ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6); ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8); ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13); ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11); ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9); ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7); ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15); ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7); ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12); ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15); ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9); ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11); ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7); ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13); ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12); /* round 2: right lane */ ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9); ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13); ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15); ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7); ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12); ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8); ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9); ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11); ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7); ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7); ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12); ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7); ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6); ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15); ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13); ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11); /* Swap contents of "b" registers */ tmp = bb; bb = bbb; bbb = tmp; /* round 3: left lane" */ ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11); ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13); ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6); ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7); ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14); ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9); ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13); ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15); ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14); ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8); ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13); ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6); ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5); ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12); ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7); ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5); /* round 3: right lane */ ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9); ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7); ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15); ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11); ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8); ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6); ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6); ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14); ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12); ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13); ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5); ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14); ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13); ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13); ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7); ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5); /* Swap contents of "c" registers */ tmp = cc; cc = ccc; ccc = tmp; /* round 4: left lane" */ ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11); ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12); ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14); ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15); ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14); ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15); ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9); ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8); ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9); ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14); ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5); ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6); ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8); ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6); ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5); ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12); /* round 4: right lane */ ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15); ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5); ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8); ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11); ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14); ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14); ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6); ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14); ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6); ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9); ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12); ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9); ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12); ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5); ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15); ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8); /* Swap contents of "d" registers */ tmp = dd; dd = ddd; ddd = tmp; /* round 5: left lane" */ ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9); ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15); ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5); ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11); ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6); ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8); ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13); ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12); ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5); ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12); ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13); ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14); ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11); ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8); ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5); ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6); /* round 5: right lane */ ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8); ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5); ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12); ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9); ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12); ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5); ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14); ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6); ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8); ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13); ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6); ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5); ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15); ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13); ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11); ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11); /* Swap contents of "e" registers */ tmp = ee; ee = eee; eee = tmp; /* combine results */ state[0] += aa; state[1] += bb; state[2] += cc; state[3] += dd; state[4] += ee; state[5] += aaa; state[6] += bbb; state[7] += ccc; state[8] += ddd; state[9] += eee; return; } |
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static int rmd320_init(struct shash_desc *desc) |
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{ |
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struct rmd320_ctx *rctx = shash_desc_ctx(desc); |
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rctx->byte_count = 0; rctx->state[0] = RMD_H0; rctx->state[1] = RMD_H1; rctx->state[2] = RMD_H2; rctx->state[3] = RMD_H3; rctx->state[4] = RMD_H4; rctx->state[5] = RMD_H5; rctx->state[6] = RMD_H6; rctx->state[7] = RMD_H7; rctx->state[8] = RMD_H8; rctx->state[9] = RMD_H9; memset(rctx->buffer, 0, sizeof(rctx->buffer)); |
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return 0; |
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} |
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static int rmd320_update(struct shash_desc *desc, const u8 *data, unsigned int len) |
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{ |
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struct rmd320_ctx *rctx = shash_desc_ctx(desc); |
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const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f); rctx->byte_count += len; /* Enough space in buffer? If so copy and we're done */ if (avail > len) { memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), data, len); |
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goto out; |
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} memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), data, avail); |
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rmd320_transform(rctx->state, rctx->buffer); |
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data += avail; len -= avail; while (len >= sizeof(rctx->buffer)) { memcpy(rctx->buffer, data, sizeof(rctx->buffer)); |
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rmd320_transform(rctx->state, rctx->buffer); |
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data += sizeof(rctx->buffer); len -= sizeof(rctx->buffer); } memcpy(rctx->buffer, data, len); |
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out: return 0; |
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} /* Add padding and return the message digest. */ |
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static int rmd320_final(struct shash_desc *desc, u8 *out) |
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{ |
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struct rmd320_ctx *rctx = shash_desc_ctx(desc); |
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u32 i, index, padlen; |
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__le64 bits; __le32 *dst = (__le32 *)out; |
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static const u8 padding[64] = { 0x80, }; |
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bits = cpu_to_le64(rctx->byte_count << 3); |
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/* Pad out to 56 mod 64 */ index = rctx->byte_count & 0x3f; padlen = (index < 56) ? (56 - index) : ((64+56) - index); |
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rmd320_update(desc, padding, padlen); |
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/* Append length */ |
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rmd320_update(desc, (const u8 *)&bits, sizeof(bits)); |
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/* Store state in digest */ |
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for (i = 0; i < 10; i++) |
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dst[i] = cpu_to_le32p(&rctx->state[i]); |
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/* Wipe context */ memset(rctx, 0, sizeof(*rctx)); |
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return 0; |
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} |
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static struct shash_alg alg = { .digestsize = RMD320_DIGEST_SIZE, .init = rmd320_init, .update = rmd320_update, .final = rmd320_final, .descsize = sizeof(struct rmd320_ctx), .base = { .cra_name = "rmd320", .cra_flags = CRYPTO_ALG_TYPE_SHASH, .cra_blocksize = RMD320_BLOCK_SIZE, .cra_module = THIS_MODULE, } |
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}; static int __init rmd320_mod_init(void) { |
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return crypto_register_shash(&alg); |
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} static void __exit rmd320_mod_fini(void) { |
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crypto_unregister_shash(&alg); |
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} module_init(rmd320_mod_init); module_exit(rmd320_mod_fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("RIPEMD-320 Message Digest"); |