50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#ifndef CRYPTO_H
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#define CRYPTO_H
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#include <string.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include "hardware/crypto/AES.h"
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#include "hardware/crypto/HMAC_MD5.h"
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#include "hardware/LED.h"
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#include "hardware/SD.h"
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#define PATH_ENTROPY_INDEX "OpenModem/entropy.index"
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#define PATH_ENTROPY_SOURCE "OpenModem/entropy.source"
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#define PATH_AES_128_KEY "OpenModem/aes128.key"
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#define PATH_CRYPTO_DISABLE "OpenModem/aes128.disable"
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#define CRYPTO_KEY_SIZE_BITS 128
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#define CRYPTO_KEY_SIZE (CRYPTO_KEY_SIZE_BITS/8)
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#define CRYPTO_HMAC_SIZE_BITS 128
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#define CRYPTO_HMAC_SIZE (CRYPTO_HMAC_SIZE_BITS/8)
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#define MAX_IVS_PER_ENTROPY_BLOCK 128
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#define CRYPTO_WAIT_TIMEOUT_MS 2000
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uint8_t crypto_work_block[CRYPTO_KEY_SIZE];
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void crypto_init(void);
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bool crypto_wait(void);
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bool crypto_enabled(void);
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bool crypto_generate_iv(void);
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uint8_t* crypto_get_iv(void);
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void crypto_set_iv_from_workblock(void);
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void crypto_generate_hmac(uint8_t *data, size_t length);
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void crypto_prepare(void);
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void crypto_encrypt_block(uint8_t block[CRYPTO_KEY_SIZE]);
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void crypto_decrypt_block(uint8_t block[CRYPTO_KEY_SIZE]);
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void crypto_test(void);
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bool should_disable_enryption(void);
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bool load_key(void);
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bool load_entropy(void);
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bool load_entropy_index(void);
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#endif
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