77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
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/*
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* Copyright 2019 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 <openssl/modes.h>
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typedef struct prov_aes_cipher_st PROV_AES_CIPHER;
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typedef struct prov_aes_key_st {
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union {
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double align;
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AES_KEY ks;
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} ks;
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block128_f block;
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union {
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cbc128_f cbc;
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ctr128_f ctr;
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} stream;
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/* The cipher functions we are going to use */
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const PROV_AES_CIPHER *ciph;
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/* The mode that we are using */
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int mode;
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/* Set to 1 if we are encrypting or 0 otherwise */
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int enc;
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unsigned char iv[AES_BLOCK_SIZE];
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/*
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* num contains the number of bytes of |iv| which are valid for modes that
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* manage partial blocks themselves.
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*/
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size_t num;
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/* Buffer of partial blocks processed via update calls */
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unsigned char buf[AES_BLOCK_SIZE];
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/* Number of bytes in buf */
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size_t bufsz;
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uint64_t flags;
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size_t keylen;
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/* Whether padding should be used or not */
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unsigned int pad : 1;
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} PROV_AES_KEY;
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struct prov_aes_cipher_st {
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int (*init)(PROV_AES_KEY *dat, const uint8_t *key, size_t keylen);
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int (*cipher)(PROV_AES_KEY *dat, uint8_t *out, const uint8_t *in,
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size_t inl);
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};
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const PROV_AES_CIPHER *PROV_AES_CIPHER_ecb(void);
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const PROV_AES_CIPHER *PROV_AES_CIPHER_cbc(void);
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const PROV_AES_CIPHER *PROV_AES_CIPHER_ofb(void);
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const PROV_AES_CIPHER *PROV_AES_CIPHER_cfb(void);
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const PROV_AES_CIPHER *PROV_AES_CIPHER_cfb1(void);
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const PROV_AES_CIPHER *PROV_AES_CIPHER_cfb8(void);
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const PROV_AES_CIPHER *PROV_AES_CIPHER_ctr(void);
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size_t fillblock(unsigned char *buf, size_t *buflen, size_t blocksize,
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const unsigned char **in, size_t *inlen);
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int trailingdata(unsigned char *buf, size_t *buflen, size_t blocksize,
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const unsigned char **in, size_t *inlen);
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void padblock(unsigned char *buf, size_t *buflen, size_t blocksize);
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int unpadblock(unsigned char *buf, size_t *buflen, size_t blocksize);
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