1 /*
2   ROM functions for hardware AES support.
3 
4   It is not recommended to use these functions directly,
5   use the wrapper functions in esp32/aes.h instead.
6 
7  */
8 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
9 //
10 // Licensed under the Apache License, Version 2.0 (the "License");
11 // you may not use this file except in compliance with the License.
12 // You may obtain a copy of the License at
13 
14 //     http://www.apache.org/licenses/LICENSE-2.0
15 //
16 // Unless required by applicable law or agreed to in writing, software
17 // distributed under the License is distributed on an "AS IS" BASIS,
18 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 // See the License for the specific language governing permissions and
20 // limitations under the License.
21 
22 #ifndef _ROM_AES_H_
23 #define _ROM_AES_H_
24 
25 #include <stdint.h>
26 #include <stdbool.h>
27 
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31 
32 //TODO, add comment for aes apis
33 enum AES_BITS {
34     AES128,
35     AES192,
36     AES256
37 };
38 
39 void ets_aes_enable(void);
40 
41 void ets_aes_disable(void);
42 
43 void ets_aes_set_endian(bool key_word_swap, bool key_byte_swap,
44                         bool in_word_swap, bool in_byte_swap,
45                         bool out_word_swap, bool out_byte_swap);
46 
47 bool ets_aes_setkey_enc(const uint8_t *key, enum AES_BITS bits);
48 
49 bool ets_aes_setkey_dec(const uint8_t *key, enum AES_BITS bits);
50 
51 void ets_aes_crypt(const uint8_t input[16], uint8_t output[16]);
52 
53 #ifdef __cplusplus
54 }
55 #endif
56 
57 #endif /* _ROM_AES_H_ */
58