59 lines
No EOL
1.3 KiB
C
59 lines
No EOL
1.3 KiB
C
// Header
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#include "secure.h"
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// Constructors
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SecureStorage* secure_storage_init(char* key){
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// Creating memory for secure storage
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SecureStorage* result = malloc(sizeof(SecureStorage));
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// Setting key
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result->key = key;
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// Return result
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return result;
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}
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// Functions
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void xor_encrypt_decrypt(char* data, char* key){
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size_t data_len = strlen(data);
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size_t key_len = strlen(key);
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for (size_t i = 0; i < data_len; ++i) {
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data[i] ^= key[i % key_len];
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}
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}
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char* secure_storage_load(SecureStorage* secure_storage, char* tag){
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/*
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Currently, We will use XOR encryption & XOR decryption.
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Not too secure but it's simple.
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*/
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// Loading data from storage
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char* data = store_load(tag);
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// Is the data empty?
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if (!data) {
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FURI_LOG_D(TAG, "Decrypting... Nothing?");
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return NULL;
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}
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// Decrypting it
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xor_encrypt_decrypt(data, secure_storage->key);
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FURI_LOG_D(TAG, "Decrypted: %s", data);
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// Returning result
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return data;
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}
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void secure_storage_save(SecureStorage* secure_storage, char* tag, char* data){
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// Encrypting data
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xor_encrypt_decrypt(data, secure_storage->key);
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// Saving it
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store_save(tag, data);
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}
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void secure_storage_free(SecureStorage* secure_storage){
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free(secure_storage->key);
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free(secure_storage);
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} |