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eec0ad10b9
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> (Merged from https://github.com/openssl/openssl/pull/13144)
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
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* Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/aes.h>
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#include "prov/ciphercommon.h"
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#include "crypto/aes_platform.h"
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#define OCB_MAX_TAG_LEN AES_BLOCK_SIZE
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#define OCB_MAX_DATA_LEN AES_BLOCK_SIZE
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#define OCB_MAX_AAD_LEN AES_BLOCK_SIZE
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typedef struct prov_aes_ocb_ctx_st {
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PROV_CIPHER_CTX base; /* Must be first */
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union {
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OSSL_UNION_ALIGN;
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AES_KEY ks;
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} ksenc; /* AES key schedule to use for encryption/aad */
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union {
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OSSL_UNION_ALIGN;
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AES_KEY ks;
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} ksdec; /* AES key schedule to use for decryption */
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OCB128_CONTEXT ocb;
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unsigned int iv_state; /* set to one of IV_STATE_XXX */
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unsigned int key_set : 1;
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size_t taglen;
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size_t data_buf_len;
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size_t aad_buf_len;
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unsigned char tag[OCB_MAX_TAG_LEN];
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unsigned char data_buf[OCB_MAX_DATA_LEN]; /* Store partial data blocks */
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unsigned char aad_buf[OCB_MAX_AAD_LEN]; /* Store partial AAD blocks */
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} PROV_AES_OCB_CTX;
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const PROV_CIPHER_HW *ossl_prov_cipher_hw_aes_ocb(size_t keybits);
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