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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * CAAM/SEC 4.x definitions for handling key-generation jobs
- *
- * Copyright 2008-2011 Freescale Semiconductor, Inc.
- *
- */
- /**
- * split_key_len - Compute MDHA split key length for a given algorithm
- * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1,
- * SHA224, SHA384, SHA512.
- *
- * Return: MDHA split key length
- */
- static inline u32 split_key_len(u32 hash)
- {
- /* Sizes for MDHA pads (*not* keys): MD5, SHA1, 224, 256, 384, 512 */
- static const u8 mdpadlen[] = { 16, 20, 32, 32, 64, 64 };
- u32 idx;
- idx = (hash & OP_ALG_ALGSEL_SUBMASK) >> OP_ALG_ALGSEL_SHIFT;
- return (u32)(mdpadlen[idx] * 2);
- }
- /**
- * split_key_pad_len - Compute MDHA split key pad length for a given algorithm
- * @hash: Hashing algorithm selection, one of OP_ALG_ALGSEL_* - MD5, SHA1,
- * SHA224, SHA384, SHA512.
- *
- * Return: MDHA split key pad length
- */
- static inline u32 split_key_pad_len(u32 hash)
- {
- return ALIGN(split_key_len(hash), 16);
- }
- struct split_key_result {
- struct completion completion;
- int err;
- };
- void split_key_done(struct device *dev, u32 *desc, u32 err, void *context);
- int gen_split_key(struct device *jrdev, u8 *key_out,
- struct alginfo * const adata, const u8 *key_in, u32 keylen,
- int max_keylen);
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