cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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key_gen.h (1288B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * CAAM/SEC 4.x definitions for handling key-generation jobs
      4 *
      5 * Copyright 2008-2011 Freescale Semiconductor, Inc.
      6 *
      7 */
      8
      9/**
     10 * split_key_len - Compute MDHA split key length for a given algorithm
     11 * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1,
     12 *        SHA224, SHA384, SHA512.
     13 *
     14 * Return: MDHA split key length
     15 */
     16static inline u32 split_key_len(u32 hash)
     17{
     18	/* Sizes for MDHA pads (*not* keys): MD5, SHA1, 224, 256, 384, 512 */
     19	static const u8 mdpadlen[] = { 16, 20, 32, 32, 64, 64 };
     20	u32 idx;
     21
     22	idx = (hash & OP_ALG_ALGSEL_SUBMASK) >> OP_ALG_ALGSEL_SHIFT;
     23
     24	return (u32)(mdpadlen[idx] * 2);
     25}
     26
     27/**
     28 * split_key_pad_len - Compute MDHA split key pad length for a given algorithm
     29 * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1,
     30 *        SHA224, SHA384, SHA512.
     31 *
     32 * Return: MDHA split key pad length
     33 */
     34static inline u32 split_key_pad_len(u32 hash)
     35{
     36	return ALIGN(split_key_len(hash), 16);
     37}
     38
     39struct split_key_result {
     40	struct completion completion;
     41	int err;
     42};
     43
     44void split_key_done(struct device *dev, u32 *desc, u32 err, void *context);
     45
     46int gen_split_key(struct device *jrdev, u8 *key_out,
     47		  struct alginfo * const adata, const u8 *key_in, u32 keylen,
     48		  int max_keylen);