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7 changed files with 99 additions and 108 deletions

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@@ -1 +1 @@
Hello, this is a test file for encryption!
Test file content for decryption

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files/out2.otp Normal file

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203
otp.c
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@@ -101,7 +101,6 @@ int handle_encrypt_menu(void);
int handle_decrypt_menu(void);
int handle_text_encrypt(void);
int handle_file_encrypt(void);
int handle_smart_decrypt(void);
// Enhanced input functions
int get_filename_with_default(const char* prompt, const char* default_path, char* result, size_t result_size);
@@ -117,7 +116,7 @@ int main(int argc, char* argv[]) {
}
int interactive_mode(void) {
printf("\n\n\n\n=== OTP Cipher %s ===\n\n", get_version());
// printf("\n\n\n\n=== OTP Cipher %s ===\n\n", get_version());
while (1) {
show_main_menu();
@@ -133,7 +132,7 @@ int interactive_mode(void) {
handle_file_encrypt();
break;
case 'D':
handle_smart_decrypt();
handle_decrypt_menu();
break;
case 'G':
handle_generate_menu();
@@ -275,14 +274,16 @@ int command_line_mode(int argc, char* argv[]) {
}
void show_main_menu(void) {
printf("======================== Main Menu ========================\n");
printf("\033[4mT\033[0mext encrypt\n");
printf("\033[4mF\033[0mile encrypt\n");
printf("\033[4mD\033[0mecrypt\n");
printf("\033[4mG\033[0menerate new pad\n");
printf("\033[4mL\033[0mist available pads\n");
printf("\033[4mS\033[0mhow pad information\n");
printf("E\033[4mx\033[0mit\n");
printf("\n\n\n\n=========================== Main Menu - OTP %s ===========================\n\n", get_version() );
printf(" \033[4mT\033[0mext encrypt\n");
printf(" \033[4mF\033[0mile encrypt\n");
printf(" \033[4mD\033[0mecrypt\n");
printf(" \033[4mG\033[0menerate new pad\n");
printf(" \033[4mL\033[0mist available pads\n");
printf(" \033[4mS\033[0mhow pad information\n");
printf(" E\033[4mx\033[0mit\n");
printf("\nSelect option: ");
}
@@ -336,8 +337,8 @@ int handle_encrypt_menu(void) {
// Ask user to choose between text and file encryption
printf("\nSelect encryption type:\n");
printf("1. Text message\n");
printf("2. File\n");
printf(" 1. Text message\n");
printf(" 2. File\n");
printf("Enter choice (1-2): ");
char choice_input[10];
@@ -351,9 +352,9 @@ int handle_encrypt_menu(void) {
if (choice == 1) {
// Text encryption
printf("\nPad selection options:\n");
printf("1. Select from numbered list\n");
printf("2. Enter checksum/prefix manually\n");
printf("3. Browse pad files\n");
printf(" 1. Select from numbered list\n");
printf(" 2. Enter checksum/prefix manually\n");
printf(" 3. Browse pad files\n");
printf("Enter choice (1-3): ");
char pad_choice[10];
@@ -404,8 +405,8 @@ int handle_encrypt_menu(void) {
else if (choice == 2) {
// File encryption
printf("\nFile selection options:\n");
printf("1. Type file path directly\n");
printf("2. Use file manager\n");
printf(" 1. Type file path directly\n");
printf(" 2. Use file manager\n");
printf("Enter choice (1-2): ");
char file_choice[10];
@@ -453,8 +454,8 @@ int handle_encrypt_menu(void) {
// Ask for output format
printf("\nSelect output format:\n");
printf("1. Binary (.otp) - preserves file permissions\n");
printf("2. ASCII (.otp.asc) - text-safe format\n");
printf(" 1. Binary (.otp) - preserves file permissions\n");
printf(" 2. ASCII (.otp.asc) - text-safe format\n");
printf("Enter choice (1-2): ");
char format_input[10];
@@ -496,46 +497,30 @@ int handle_encrypt_menu(void) {
}
int handle_decrypt_menu(void) {
printf("\n=== Decrypt Data ===\n");
printf("\n=== Smart Decrypt ===\n");
printf("Enter encrypted data (paste ASCII armor), file path, or press Enter to browse files:\n");
// Ask user to choose between text/message and file decryption
printf("\nSelect decryption type:\n");
printf("1. Text message (ASCII armored)\n");
printf("2. File (.otp or .otp.asc)\n");
printf("Enter choice (1-2): ");
char choice_input[10];
if (!fgets(choice_input, sizeof(choice_input), stdin)) {
char input_line[MAX_LINE_LENGTH];
if (!fgets(input_line, sizeof(input_line), stdin)) {
printf("Error: Failed to read input\n");
return 1;
}
int choice = atoi(choice_input);
// Remove newline
input_line[strcspn(input_line, "\n")] = 0;
if (choice == 1) {
// Text/message decryption - interactive input
return decrypt_text(NULL, NULL); // No pad selection needed - chksum comes from message
}
else if (choice == 2) {
// File decryption
printf("\nEnter encrypted file path (.otp or .otp.asc): ");
char input_file[512];
if (!fgets(input_file, sizeof(input_file), stdin)) {
printf("Error: Failed to read input\n");
return 1;
}
input_file[strcspn(input_file, "\n")] = 0;
// Check if file exists
if (access(input_file, R_OK) != 0) {
printf("Error: File '%s' not found or cannot be read\n", input_file);
if (strlen(input_line) == 0) {
// Empty input - launch file manager to browse for files
char selected_file[512];
if (launch_file_manager(get_files_directory(), selected_file, sizeof(selected_file)) != 0) {
printf("Error: Could not launch file manager\n");
return 1;
}
// Generate smart default output filename with files directory and use enhanced input function
char temp_default[512];
char default_output[512];
strncpy(temp_default, input_file, sizeof(temp_default) - 1);
strncpy(temp_default, selected_file, sizeof(temp_default) - 1);
temp_default[sizeof(temp_default) - 1] = '\0';
// Remove common encrypted extensions to get a better default
@@ -561,13 +546,63 @@ int handle_decrypt_menu(void) {
return 1;
}
const char* output_filename = output_file;
return decrypt_file(selected_file, output_file);
}
else if (strncmp(input_line, "-----BEGIN OTP MESSAGE-----", 27) == 0) {
// Looks like ASCII armor - collect the full message
char full_message[MAX_INPUT_SIZE * 4] = {0};
strcat(full_message, input_line);
strcat(full_message, "\n");
return decrypt_file(input_file, output_filename);
printf("Continue pasting the message (end with -----END OTP MESSAGE-----):\n");
char line[MAX_LINE_LENGTH];
while (fgets(line, sizeof(line), stdin)) {
strncat(full_message, line, sizeof(full_message) - strlen(full_message) - 1);
if (strstr(line, "-----END OTP MESSAGE-----")) {
break;
}
}
return decrypt_text(NULL, full_message);
}
else {
printf("Invalid choice. Please enter 1 or 2.\n");
return 1;
// Check if it looks like a file path
if (access(input_line, R_OK) == 0) {
// It's a valid file - decrypt it with enhanced input for output filename
char temp_default[512];
char default_output[512];
strncpy(temp_default, input_line, sizeof(temp_default) - 1);
temp_default[sizeof(temp_default) - 1] = '\0';
// Remove common encrypted extensions to get a better default
if (strstr(temp_default, ".otp.asc")) {
// Replace .otp.asc with original extension or no extension
char* ext_pos = strstr(temp_default, ".otp.asc");
*ext_pos = '\0';
} else if (strstr(temp_default, ".otp")) {
// Replace .otp with original extension or no extension
char* ext_pos = strstr(temp_default, ".otp");
*ext_pos = '\0';
} else {
// No recognized encrypted extension, add .decrypted suffix
strncat(temp_default, ".decrypted", sizeof(temp_default) - strlen(temp_default) - 1);
}
// Apply files directory default path
get_default_file_path(temp_default, default_output, sizeof(default_output));
char output_file[512];
if (get_filename_with_default("Output filename:", default_output, output_file, sizeof(output_file)) != 0) {
printf("Error: Failed to read input\n");
return 1;
}
return decrypt_file(input_line, output_file);
} else {
printf("Input not recognized as ASCII armor or valid file path.\n");
return 1;
}
}
}
@@ -1196,8 +1231,8 @@ int encrypt_text(const char* pad_identifier, const char* input_text) {
} else {
// Get input text from user (interactive mode)
printf("\nText input options:\n");
printf("1. Type text directly\n");
printf("2. Use text editor\n");
printf(" 1. Type text directly\n");
printf(" 2. Use text editor\n");
printf("Enter choice (1-2): ");
char input_choice[10];
@@ -1579,14 +1614,18 @@ int encrypt_file(const char* pad_identifier, const char* input_file, const char*
return 1;
}
// Generate output filename if not specified
// Generate output filename if not specified, using files directory
char default_output[512];
if (output_file == NULL) {
char temp_output[512];
if (ascii_armor) {
snprintf(default_output, sizeof(default_output), "%s.otp.asc", input_file);
snprintf(temp_output, sizeof(temp_output), "%s.otp.asc", input_file);
} else {
snprintf(default_output, sizeof(default_output), "%s.otp", input_file);
snprintf(temp_output, sizeof(temp_output), "%s.otp", input_file);
}
// Apply files directory default path
get_default_file_path(temp_output, default_output, sizeof(default_output));
output_file = default_output;
}
@@ -2837,56 +2876,6 @@ int handle_file_encrypt(void) {
return encrypt_file(pad_input, input_file, output_filename, ascii_armor);
}
int handle_smart_decrypt(void) {
printf("\n=== Smart Decrypt ===\n");
printf("Enter encrypted data (paste ASCII armor) or press Enter to browse files:\n");
char input_line[MAX_LINE_LENGTH];
if (!fgets(input_line, sizeof(input_line), stdin)) {
printf("Error: Failed to read input\n");
return 1;
}
// Remove newline
input_line[strcspn(input_line, "\n")] = 0;
if (strlen(input_line) == 0) {
// Empty input - launch file manager
char selected_file[512];
if (launch_file_manager(".", selected_file, sizeof(selected_file)) != 0) {
printf("Error: Could not launch file manager\n");
return 1;
}
// Decrypt selected file
return decrypt_file(selected_file, NULL);
} else if (strncmp(input_line, "-----BEGIN OTP MESSAGE-----", 27) == 0) {
// Looks like ASCII armor - collect the full message
char full_message[MAX_INPUT_SIZE * 4] = {0};
strcat(full_message, input_line);
strcat(full_message, "\n");
printf("Continue pasting the message (end with -----END OTP MESSAGE-----):\n");
char line[MAX_LINE_LENGTH];
while (fgets(line, sizeof(line), stdin)) {
strncat(full_message, line, sizeof(full_message) - strlen(full_message) - 1);
if (strstr(line, "-----END OTP MESSAGE-----")) {
break;
}
}
return decrypt_text(NULL, full_message);
} else {
// Check if it looks like a file path
if (access(input_line, R_OK) == 0) {
return decrypt_file(input_line, NULL);
} else {
printf("Input not recognized as ASCII armor or valid file path.\n");
return 1;
}
}
}
void print_usage(const char* program_name) {
printf("OTP Cipher - One Time Pad Implementation %s\n", get_version());

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test_files_dir.txt Normal file
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@@ -0,0 +1 @@
Testing updated files directory functionality

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test_new.txt Normal file
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@@ -0,0 +1 @@
Testing files directory functionality

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