1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 24c1ec1f9SYuan Kang /* 34c1ec1f9SYuan Kang * CAAM/SEC 4.x definitions for handling key-generation jobs 44c1ec1f9SYuan Kang * 54c1ec1f9SYuan Kang * Copyright 2008-2011 Freescale Semiconductor, Inc. 64c1ec1f9SYuan Kang * 74c1ec1f9SYuan Kang */ 84c1ec1f9SYuan Kang 9*7e0880b9SHoria Geantă /** 10*7e0880b9SHoria Geantă * split_key_len - Compute MDHA split key length for a given algorithm 11*7e0880b9SHoria Geantă * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1, 12*7e0880b9SHoria Geantă * SHA224, SHA384, SHA512. 13*7e0880b9SHoria Geantă * 14*7e0880b9SHoria Geantă * Return: MDHA split key length 15*7e0880b9SHoria Geantă */ 16*7e0880b9SHoria Geantă static inline u32 split_key_len(u32 hash) 17*7e0880b9SHoria Geantă { 18*7e0880b9SHoria Geantă /* Sizes for MDHA pads (*not* keys): MD5, SHA1, 224, 256, 384, 512 */ 19*7e0880b9SHoria Geantă static const u8 mdpadlen[] = { 16, 20, 32, 32, 64, 64 }; 20*7e0880b9SHoria Geantă u32 idx; 21*7e0880b9SHoria Geantă 22*7e0880b9SHoria Geantă idx = (hash & OP_ALG_ALGSEL_SUBMASK) >> OP_ALG_ALGSEL_SHIFT; 23*7e0880b9SHoria Geantă 24*7e0880b9SHoria Geantă return (u32)(mdpadlen[idx] * 2); 25*7e0880b9SHoria Geantă } 26*7e0880b9SHoria Geantă 27*7e0880b9SHoria Geantă /** 28*7e0880b9SHoria Geantă * split_key_pad_len - Compute MDHA split key pad length for a given algorithm 29*7e0880b9SHoria Geantă * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1, 30*7e0880b9SHoria Geantă * SHA224, SHA384, SHA512. 31*7e0880b9SHoria Geantă * 32*7e0880b9SHoria Geantă * Return: MDHA split key pad length 33*7e0880b9SHoria Geantă */ 34*7e0880b9SHoria Geantă static inline u32 split_key_pad_len(u32 hash) 35*7e0880b9SHoria Geantă { 36*7e0880b9SHoria Geantă return ALIGN(split_key_len(hash), 16); 37*7e0880b9SHoria Geantă } 38*7e0880b9SHoria Geantă 394c1ec1f9SYuan Kang struct split_key_result { 404c1ec1f9SYuan Kang struct completion completion; 414c1ec1f9SYuan Kang int err; 424c1ec1f9SYuan Kang }; 434c1ec1f9SYuan Kang 444c1ec1f9SYuan Kang void split_key_done(struct device *dev, u32 *desc, u32 err, void *context); 454c1ec1f9SYuan Kang 46db57656bSHoria Geantă int gen_split_key(struct device *jrdev, u8 *key_out, 476655cb8eSHoria Geantă struct alginfo * const adata, const u8 *key_in, u32 keylen, 486655cb8eSHoria Geantă int max_keylen); 49