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1 /*
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2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
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3 *
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4 * Licensed under the OpenSSL license (the "License"). You may not use
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5 * this file except in compliance with the License. You can obtain a copy
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6 * in the file LICENSE in the source distribution or at
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7 * https://www.openssl.org/source/license.html
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8 */
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9
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10 #ifndef HEADER_AES_H
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11 # define HEADER_AES_H
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12
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13 # include <openssl/opensslconf.h>
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14
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15 # include <stddef.h>
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16 # ifdef __cplusplus
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17 extern "C" {
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18 # endif
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19
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20 # define AES_ENCRYPT 1
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21 # define AES_DECRYPT 0
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22
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23 /*
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24 * Because array size can't be a const in C, the following two are macros.
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25 * Both sizes are in bytes.
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26 */
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27 # define AES_MAXNR 14
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28 # define AES_BLOCK_SIZE 16
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29
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30 /* This should be a hidden type, but EVP requires that the size be known */
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31 struct aes_key_st {
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32 # ifdef AES_LONG
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33 unsigned long rd_key[4 * (AES_MAXNR + 1)];
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34 # else
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35 unsigned int rd_key[4 * (AES_MAXNR + 1)];
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36 # endif
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37 int rounds;
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38 };
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39 typedef struct aes_key_st AES_KEY;
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40
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41 const char *AES_options(void);
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42
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43 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
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44 AES_KEY *key);
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45 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
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46 AES_KEY *key);
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47
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48 void AES_encrypt(const unsigned char *in, unsigned char *out,
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49 const AES_KEY *key);
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50 void AES_decrypt(const unsigned char *in, unsigned char *out,
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51 const AES_KEY *key);
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52
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53 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
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54 const AES_KEY *key, const int enc);
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55 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
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56 size_t length, const AES_KEY *key,
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57 unsigned char *ivec, const int enc);
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58 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
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59 size_t length, const AES_KEY *key,
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60 unsigned char *ivec, int *num, const int enc);
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61 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
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62 size_t length, const AES_KEY *key,
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63 unsigned char *ivec, int *num, const int enc);
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64 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
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65 size_t length, const AES_KEY *key,
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66 unsigned char *ivec, int *num, const int enc);
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67 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
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68 size_t length, const AES_KEY *key,
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69 unsigned char *ivec, int *num);
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70 /* NB: the IV is _two_ blocks long */
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71 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
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72 size_t length, const AES_KEY *key,
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73 unsigned char *ivec, const int enc);
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74 /* NB: the IV is _four_ blocks long */
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75 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
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76 size_t length, const AES_KEY *key,
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77 const AES_KEY *key2, const unsigned char *ivec,
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78 const int enc);
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79
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80 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
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81 unsigned char *out,
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82 const unsigned char *in, unsigned int inlen);
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83 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
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84 unsigned char *out,
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85 const unsigned char *in, unsigned int inlen);
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86
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87
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88 # ifdef __cplusplus
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89 }
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90 # endif
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91
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92 #endif
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