unleashed-firmware/applications/external/totp/services/crypto/crypto.h
2023-03-15 01:25:18 +03:00

47 lines
No EOL
1.7 KiB
C

#pragma once
#include "../../types/plugin_state.h"
/**
* @brief Encrypts plain data using built-in certificate and given initialization vector (IV)
* @param plain_data plain data to be encrypted
* @param plain_data_length plain data length
* @param iv initialization vector (IV) to be used to encrypt plain data
* @param[out] encrypted_data_length encrypted data length
* @return Encrypted data
*/
uint8_t* totp_crypto_encrypt(
const uint8_t* plain_data,
const size_t plain_data_length,
const uint8_t* iv,
size_t* encrypted_data_length);
/**
* @brief Decrypts encrypted data using built-in certificate and given initialization vector (IV)
* @param encrypted_data encrypted data to be decrypted
* @param encrypted_data_length encrypted data length
* @param iv initialization vector (IV) to be used to encrypt plain data
* @param[out] decrypted_data_length decrypted data length
* @return Decrypted data
*/
uint8_t* totp_crypto_decrypt(
const uint8_t* encrypted_data,
const size_t encrypted_data_length,
const uint8_t* iv,
size_t* decrypted_data_length);
/**
* @brief Seed initialization vector (IV) using user's PIN
* @param plugin_state application state
* @param pin user's PIN
* @param pin_length user's PIN length
* @return \c true on success; \c false otherwise
*/
bool totp_crypto_seed_iv(PluginState* plugin_state, const uint8_t* pin, uint8_t pin_length);
/**
* @brief Verifies whether cryptographic information (certificate + IV) is valid and can be used for encryption and decryption
* @param plugin_state application state
* @return \c true if cryptographic information is valid; \c false otherwise
*/
bool totp_crypto_verify_key(const PluginState* plugin_state);