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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * CAAM/SEC 4.x definitions for handling key-generation jobs4 *5 * Copyright 2008-2011 Freescale Semiconductor, Inc.6 *7 */8 9/**10 * split_key_len - Compute MDHA split key length for a given algorithm11 * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1,12 * SHA224, SHA384, SHA512.13 *14 * Return: MDHA split key length15 */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 algorithm29 * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1,30 * SHA224, SHA384, SHA512.31 *32 * Return: MDHA split key pad length33 */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);49