1 /* 2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef HEADER_AES_H 11 # define HEADER_AES_H 12 13 # include <openssl/opensslconf.h> 14 15 # include <stddef.h> 16 # ifdef __cplusplus 17 extern "C" { 18 # endif 19 20 # define AES_ENCRYPT 1 21 # define AES_DECRYPT 0 22 23 /* 24 * Because array size can't be a const in C, the following two are macros. 25 * Both sizes are in bytes. 26 */ 27 # define AES_MAXNR 14 28 # define AES_BLOCK_SIZE 16 29 30 /* This should be a hidden type, but EVP requires that the size be known */ 31 struct aes_key_st { 32 # ifdef AES_LONG 33 unsigned long rd_key[4 * (AES_MAXNR + 1)]; 34 # else 35 unsigned int rd_key[4 * (AES_MAXNR + 1)]; 36 # endif 37 int rounds; 38 }; 39 typedef struct aes_key_st AES_KEY; 40 41 const char *AES_options(void); 42 43 int AES_set_encrypt_key(const unsigned char *userKey, const int bits, 44 AES_KEY *key); 45 int AES_set_decrypt_key(const unsigned char *userKey, const int bits, 46 AES_KEY *key); 47 48 void AES_encrypt(const unsigned char *in, unsigned char *out, 49 const AES_KEY *key); 50 void AES_decrypt(const unsigned char *in, unsigned char *out, 51 const AES_KEY *key); 52 53 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out, 54 const AES_KEY *key, const int enc); 55 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out, 56 size_t length, const AES_KEY *key, 57 unsigned char *ivec, const int enc); 58 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out, 59 size_t length, const AES_KEY *key, 60 unsigned char *ivec, int *num, const int enc); 61 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out, 62 size_t length, const AES_KEY *key, 63 unsigned char *ivec, int *num, const int enc); 64 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out, 65 size_t length, const AES_KEY *key, 66 unsigned char *ivec, int *num, const int enc); 67 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out, 68 size_t length, const AES_KEY *key, 69 unsigned char *ivec, int *num); 70 /* NB: the IV is _two_ blocks long */ 71 void AES_ige_encrypt(const unsigned char *in, unsigned char *out, 72 size_t length, const AES_KEY *key, 73 unsigned char *ivec, const int enc); 74 /* NB: the IV is _four_ blocks long */ 75 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out, 76 size_t length, const AES_KEY *key, 77 const AES_KEY *key2, const unsigned char *ivec, 78 const int enc); 79 80 int AES_wrap_key(AES_KEY *key, const unsigned char *iv, 81 unsigned char *out, 82 const unsigned char *in, unsigned int inlen); 83 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv, 84 unsigned char *out, 85 const unsigned char *in, unsigned int inlen); 86 87 88 # ifdef __cplusplus 89 } 90 # endif 91 92 #endif 93