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Qualcomm crypto engine does not handle the following scenarios and will issue an abort. In such cases, pass on the transformation to a fallback algorithm. - DES3 algorithms with all three keys same. - AES192 algorithms. - 0 length messages. Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2021, Linaro Limited. All rights reserved.
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*/
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#ifndef _AEAD_H_
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#define _AEAD_H_
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#include "common.h"
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#include "core.h"
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#define QCE_MAX_KEY_SIZE 64
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#define QCE_CCM4309_SALT_SIZE 3
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struct qce_aead_ctx {
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u8 enc_key[QCE_MAX_KEY_SIZE];
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u8 auth_key[QCE_MAX_KEY_SIZE];
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u8 ccm4309_salt[QCE_CCM4309_SALT_SIZE];
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unsigned int enc_keylen;
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unsigned int auth_keylen;
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unsigned int authsize;
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bool need_fallback;
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struct crypto_aead *fallback;
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};
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struct qce_aead_reqctx {
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unsigned long flags;
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u8 *iv;
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unsigned int ivsize;
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int src_nents;
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int dst_nents;
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struct scatterlist result_sg;
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struct scatterlist adata_sg;
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struct sg_table dst_tbl;
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struct sg_table src_tbl;
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struct scatterlist *dst_sg;
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struct scatterlist *src_sg;
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unsigned int cryptlen;
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unsigned int assoclen;
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unsigned char *adata;
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u8 ccm_nonce[QCE_MAX_NONCE];
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u8 ccmresult_buf[QCE_BAM_BURST_SIZE];
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u8 ccm_rfc4309_iv[QCE_MAX_IV_SIZE];
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struct aead_request fallback_req;
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};
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static inline struct qce_alg_template *to_aead_tmpl(struct crypto_aead *tfm)
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{
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struct aead_alg *alg = crypto_aead_alg(tfm);
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return container_of(alg, struct qce_alg_template, alg.aead);
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}
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extern const struct qce_algo_ops aead_ops;
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#endif /* _AEAD_H_ */
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