162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * CAAM/SEC 4.x definitions for handling key-generation jobs 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright 2008-2011 Freescale Semiconductor, Inc. 662306a36Sopenharmony_ci * 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci/** 1062306a36Sopenharmony_ci * split_key_len - Compute MDHA split key length for a given algorithm 1162306a36Sopenharmony_ci * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1, 1262306a36Sopenharmony_ci * SHA224, SHA384, SHA512. 1362306a36Sopenharmony_ci * 1462306a36Sopenharmony_ci * Return: MDHA split key length 1562306a36Sopenharmony_ci */ 1662306a36Sopenharmony_cistatic inline u32 split_key_len(u32 hash) 1762306a36Sopenharmony_ci{ 1862306a36Sopenharmony_ci /* Sizes for MDHA pads (*not* keys): MD5, SHA1, 224, 256, 384, 512 */ 1962306a36Sopenharmony_ci static const u8 mdpadlen[] = { 16, 20, 32, 32, 64, 64 }; 2062306a36Sopenharmony_ci u32 idx; 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci idx = (hash & OP_ALG_ALGSEL_SUBMASK) >> OP_ALG_ALGSEL_SHIFT; 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci return (u32)(mdpadlen[idx] * 2); 2562306a36Sopenharmony_ci} 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ci/** 2862306a36Sopenharmony_ci * split_key_pad_len - Compute MDHA split key pad length for a given algorithm 2962306a36Sopenharmony_ci * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1, 3062306a36Sopenharmony_ci * SHA224, SHA384, SHA512. 3162306a36Sopenharmony_ci * 3262306a36Sopenharmony_ci * Return: MDHA split key pad length 3362306a36Sopenharmony_ci */ 3462306a36Sopenharmony_cistatic inline u32 split_key_pad_len(u32 hash) 3562306a36Sopenharmony_ci{ 3662306a36Sopenharmony_ci return ALIGN(split_key_len(hash), 16); 3762306a36Sopenharmony_ci} 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_cistruct split_key_result { 4062306a36Sopenharmony_ci struct completion completion; 4162306a36Sopenharmony_ci int err; 4262306a36Sopenharmony_ci}; 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_civoid split_key_done(struct device *dev, u32 *desc, u32 err, void *context); 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_ciint gen_split_key(struct device *jrdev, u8 *key_out, 4762306a36Sopenharmony_ci struct alginfo * const adata, const u8 *key_in, u32 keylen, 4862306a36Sopenharmony_ci int max_keylen); 49