mirror of
https://github.com/martijnvanbrummelen/nwipe.git
synced 2026-02-20 13:42:14 +00:00
Reformat layout of PRNG help text.
The help text for all prngs was formatted so that it is consistent in terms of layout and positioning with the help text as displayed by the methods help text. Specifically so that it still remains legible with a 80x25 legacy (nomodset) terminal. Also added the ability to run the prng benchmark from within the prng selection screen.
This commit is contained in:
PartialVolume
274
src/gui.c
274
src/gui.c
@@ -167,6 +167,7 @@ const char* main_window_footer_warning_no_drive_selected =
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/* Oddly enough, placing extra quotes around the footer strings fixes corruption to the right
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* of the footer message when the terminal is resized, a quirk in ncurses? - DO NOT REMOVE THE \" */
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const char* selection_footer = "J=Down K=Up Space=Select Backspace=Cancel Ctrl+C=Quit";
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const char* selection_footer_prng = "J=Down K=Up Space=Select o=Benchmark Backspace=Cancel Ctrl+C=Quit";
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const char* selection_footer_config = "J=Down K=Up Return=Select ESC|Backspace=back Ctrl+C=Quit";
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const char* selection_footer_benchmark = "ESC|Backspace=Back ENTER=Run Ctrl+C=Quit";
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const char* selection_footer_preview_prior_to_drive_selection =
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@@ -2086,7 +2087,7 @@ void nwipe_gui_prng( void )
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/* Update the footer window. */
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werase( footer_window );
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nwipe_gui_title( footer_window, selection_footer );
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nwipe_gui_title( footer_window, selection_footer_prng );
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wrefresh( footer_window );
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if( nwipe_options.prng == &nwipe_twister )
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@@ -2118,7 +2119,7 @@ void nwipe_gui_prng( void )
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/* Clear the main window. */
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werase( main_window );
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nwipe_gui_create_all_windows_on_terminal_resize( 0, selection_footer );
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nwipe_gui_create_all_windows_on_terminal_resize( 0, selection_footer_prng );
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/* Initialize the working row. */
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yy = 3;
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@@ -2143,174 +2144,79 @@ void nwipe_gui_prng( void )
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/* Print the cursor. */
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mvwaddch( main_window, 3 + focus, tab1, ACS_RARROW );
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yy = 2; // Start line for all help text
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switch( focus )
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{
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case 0:
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mvwprintw( main_window,
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yy++,
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tab1,
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"The Mersenne Twister, by Makoto Matsumoto and Takuji Nishimura, is a " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"generalized feedback shift register PRNG that is uniform and " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"equidistributed in 623-dimensions with a proven period of 2^19937-1. " );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"This implementation passes the Marsaglia Diehard test suite. " );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window, 2, tab2, "The Mersenne Twister, by Makoto Matsumoto and " );
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mvwprintw( main_window, 3, tab2, "Takuji Nishimura, is a generalized feedback shift" );
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mvwprintw( main_window, 4, tab2, "register PRNG that is uniform and equidistributed" );
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mvwprintw( main_window, 5, tab2, "in 623-dimensions with a proven period of " );
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mvwprintw( main_window, 6, tab2, "2^19937-1." );
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mvwprintw( main_window, 7, tab2, " " );
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mvwprintw( main_window, 8, tab2, "This implementation passes the Marsaglia Diehard " );
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mvwprintw( main_window, 9, tab2, "test suite." );
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mvwprintw( main_window, 10, tab2, " " );
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mvwprintw( main_window, 14, tab1, "Fastest PRNG for you hardware? type o to find out" );
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break;
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case 1:
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mvwprintw( main_window,
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yy++,
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tab1,
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"ISAAC, by Bob Jenkins, is a PRNG derived from RC4 with a minimum period of " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"2^40 and an expected period of 2^8295. It is difficult to recover the " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"initial PRNG state by cryptanalysis of the ISAAC stream. " );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"Performs best on a 32-bit CPU. Use ISAAC-64 if this system has a 64-bit CPU. " );
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mvwprintw( main_window, 2, tab2, "ISAAC, by Bob Jenkins, is a PRNG derived from RC4" );
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mvwprintw( main_window, 3, tab2, "RC4 with a minimum period of 2^40 and an expected" );
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mvwprintw( main_window, 4, tab2, "period of 2^8295. It is difficult to recover the " );
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mvwprintw( main_window, 5, tab2, "initial PRNG state by cryptanalysis of the ISAAC " );
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mvwprintw( main_window, 6, tab2, "stream. " );
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mvwprintw( main_window, 7, tab2, " " );
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mvwprintw( main_window, 8, tab2, "Performs best on a 32-bit CPU. Use ISAAC-64 if " );
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mvwprintw( main_window, 9, tab2, "this system has a 64-bit CPU. " );
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mvwprintw( main_window, 14, tab1, "Fastest PRNG for you hardware? type o to find out" );
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break;
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case 2:
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mvwprintw( main_window,
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yy++,
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tab1,
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"ISAAC-64, by Bob Jenkins, is like 32-bit ISAAC, but with a minimum period of " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"2^77 and an expected period of 2^16583. It is difficult to recover the " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"initial PRNG state by cryptanalysis of the ISAAC-64 stream. " );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"Performs best on a 64-bit CPU. Use ISAAC if this system has a 32-bit CPU. " );
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mvwprintw( main_window, 2, tab2, "ISAAC-64, by Bob Jenkins, is like 32-bit ISAAC, " );
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mvwprintw( main_window, 3, tab2, "but with a minimum period of 2^77 and an expected" );
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mvwprintw( main_window, 4, tab2, "period of 2^16583. It is difficult to recover the" );
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mvwprintw( main_window, 5, tab2, "initial PRNG state by cryptanalysis of the " );
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mvwprintw( main_window, 5, tab2, "ISAAC-64 stream. " );
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mvwprintw( main_window, 6, tab2, " " );
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mvwprintw( main_window, 7, tab2, "Performs best on a 64-bit CPU. Use ISAAC if this " );
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mvwprintw( main_window, 8, tab2, "system has a 32-bit CPU. " );
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mvwprintw( main_window, 14, tab1, "Fastest PRNG for you hardware? type o to find out" );
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break;
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case 3:
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mvwprintw( main_window,
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yy++,
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tab1,
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"ALFG (Additive Lagged Fibonacci Generator), is a class of PRNGs utilizing " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"the Fibonacci sequence with additive operations between lagged values. While " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"they offer a good balance between speed and randomness, it's important to note" );
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mvwprintw( main_window,
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yy++,
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tab1,
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"that they provide lower levels of security, making them less suitable for " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"cryptographic applications. Their periodicity depends on the choice of lags " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"and arithmetic operations, potentially achieving large values, often 2^N or " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"higher, where N is the bit length of the states. " );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"Efficient on CPUs of any bit width, particularly suited for non-cryptographic " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"applications requiring long sequences with a good speed-randomness trade-off. " );
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mvwprintw( main_window, yy++, tab2, "ALFGs use additive lagged Fibonacci sequences, " );
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mvwprintw( main_window, yy++, tab2, "offering good speed and randomness but low " );
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mvwprintw( main_window, yy++, tab2, "security, making them unsuitable for cryptography" );
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mvwprintw( main_window, yy++, tab2, "Their period depends on lag and arithmetic " );
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mvwprintw( main_window, yy++, tab2, "choices, often reaching 2^N or higher, where N " );
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mvwprintw( main_window, yy++, tab2, "is the bit length of the states. " );
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mvwprintw( main_window, yy++, tab2, " " );
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mvwprintw( main_window, yy++, tab2, "Efficient on CPUs of any bit width, particularly " );
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mvwprintw( main_window, yy++, tab2, "suited for non-cryptographic applications " );
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mvwprintw( main_window, yy++, tab2, "requiring long sequences with a good speed and " );
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mvwprintw( main_window, yy++, tab2, "randomness trade-off. " );
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mvwprintw( main_window, 14, tab1, "Fastest PRNG for you hardware? type o to find out" );
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break;
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case 4:
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mvwprintw( main_window,
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yy++,
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tab1,
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"XORoshiro256**, originally designed by David Blackman and Sebastiano Vigna " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"for 128 bits, was adapted to 256 bits by Fabian Druschke. This adaptation " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"enhances its capability for fast, high-quality generation of pseudo-random " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"numbers with a state size of 256 bits. It boasts an extremely long period " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"of 2^256-1 without sacrificing performance, suitable for a wide range of " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"applications. " );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"The simple arithmetic operations (shifts, rotations, and XORs) of " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"XORoshiro256** ensure low computational complexity. This, combined with " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"the adaptation for 256 bits by Fabian Druschke, allows efficient use " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"especially for legacy systems, due to its efficiency and minimal demands. " );
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mvwprintw( main_window, yy++, tab2, "XORoshiro256 was designed by David Blackman " );
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mvwprintw( main_window, yy++, tab2, "and Sebastiano Vigna for 128 bits. adapted to 256" );
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mvwprintw( main_window, yy++, tab2, "bits by Fabian Druschke, enhancing its capability" );
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mvwprintw( main_window, yy++, tab2, "for fast, high-quality pseudo-random numbers " );
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mvwprintw( main_window, yy++, tab2, "with a state size of 256 bits and extremely long " );
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mvwprintw( main_window, yy++, tab2, "period of 2^256-1 without sacrificing performance" );
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mvwprintw( main_window, yy++, tab2, " " );
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mvwprintw( main_window, yy++, tab2, "The simple arithmetic operations, shifts, XORs " );
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mvwprintw( main_window, yy++, tab2, "and rotations ensure low computational complexity" );
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mvwprintw( main_window, yy++, tab2, "Combined with the 256 bit adaption, it provides " );
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mvwprintw( main_window, yy++, tab2, "efficient use especially for legacy systems " );
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mvwprintw( main_window, 14, tab1, "Fastest PRNG for you hardware? type o to find out" );
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break;
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case 5: {
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extern int has_aes_ni( void );
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@@ -2318,53 +2224,38 @@ void nwipe_gui_prng( void )
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if( aes_ctr_available )
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{
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mvwprintw( main_window,
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yy++,
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tab1,
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"AES-256 in Counter Mode (CTR), securely implemented by Fabian Druschke" );
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mvwprintw(
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main_window, yy++, tab1, "using the Linux kernel's AF_ALG cryptographic API for efficient" );
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mvwprintw(
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main_window, yy++, tab1, "pseudo-random data generation with minimal user-space overhead." );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"This integration leverages potential hardware acceleration via AES-NI," );
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mvwprintw(
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main_window, yy++, tab1, "making AES-256 CTR ideal for secure and fast data wiping in nwipe." );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw( main_window,
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yy++,
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tab1,
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"Compliant with NIST SP 800-38A, it is a global standard for encryption." );
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mvwprintw(
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main_window, yy++, tab1, "Designed for 64-bit Linux systems with kernel CryptoAPI support." );
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yy = 2;
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mvwprintw( main_window, yy++, tab2, "AES-256 in Counter Mode (CTR), implemented " );
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mvwprintw( main_window, yy++, tab2, "by Fabian Druschke using the Linux kernel's " );
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mvwprintw( main_window, yy++, tab2, "AF_ALG cryptographic API for efficient pseudo" );
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mvwprintw( main_window, yy++, tab2, "random data generation. Hardware acceleration" );
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mvwprintw( main_window, yy++, tab2, "via AES-NI, makes AES-256 CTR ideal for " );
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mvwprintw( main_window, yy++, tab2, "secure and fast data wiping in nwipe. " );
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mvwprintw( main_window, yy++, tab2, " " );
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mvwprintw( main_window, yy++, tab2, "Compliant with NIST SP 800-38A, it is a " );
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mvwprintw( main_window, yy++, tab2, "global standard for encryption. Designed for " );
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mvwprintw( main_window, yy++, tab2, "64-bit Linux systems with kernel CryptoAPI. " );
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mvwprintw( main_window, 14, tab1, "Fastest PRNG for you hardware? type o to find out" );
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}
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else
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{
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yy = 2;
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/* Dimmed, shortened explanation when AES-NI is not available. */
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wattron( main_window, A_DIM );
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mvwprintw( main_window, yy++, tab1, "AES-256 in Counter Mode (CTR) PRNG (N/A on this system)" );
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mvwprintw(
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main_window, yy++, tab1, "This PRNG uses AES-NI acceleration via the Linux kernel CryptoAPI." );
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mvwprintw( main_window, yy++, tab1, "It is not available because your CPU does not support the" );
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mvwprintw( main_window, yy++, tab1, "required AES-NI instruction set." );
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mvwprintw( main_window,
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yy++,
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tab1,
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" " );
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mvwprintw(
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main_window, yy++, tab1, "You can still use all other PRNGs (e.g. xoroshiro-256, ISAAC, MT)." );
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mvwprintw( main_window, yy++, tab2, "AES-256 in Counter Mode (CTR) PRNG is NOT " );
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mvwprintw( main_window, yy++, tab2, "available on this system. This PRNG uses " );
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mvwprintw( main_window, yy++, tab2, "AES-NI acceleration via the Linux kernel " );
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mvwprintw( main_window, yy++, tab2, "CryptoAPI. It is not available because your " );
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mvwprintw( main_window, yy++, tab2, "CPU does not support the required AES-NI " );
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mvwprintw( main_window, yy++, tab2, "instruction set. You can still use all other " );
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mvwprintw( main_window, yy++, tab2, " " );
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mvwprintw( main_window, yy++, tab2, "PRNGs (e.g. xoroshiro-256, ISAAC, MT). " );
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wattroff( main_window, A_DIM );
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mvwprintw( main_window, 14, tab1, "Fastest PRNG for you hardware? type o to find out" );
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}
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break;
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@@ -2470,6 +2361,11 @@ void nwipe_gui_prng( void )
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break;
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}
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case 'o':
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// validkeyhit = 1;
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nwipe_gui_benchmark_prng();
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break;
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case KEY_BACKSPACE:
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case KEY_BREAK:
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@@ -29,13 +29,13 @@
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#include "xor/xoroshiro256_prng.h" //XORoshiro-256 prototype
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#include "aes/aes_ctr_prng.h" // AES-NI prototype
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nwipe_prng_t nwipe_twister = { "Mersenne Twister (mt19937ar-cok)", nwipe_twister_init, nwipe_twister_read };
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nwipe_prng_t nwipe_twister = { "Mersenne Twister", nwipe_twister_init, nwipe_twister_read };
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nwipe_prng_t nwipe_isaac = { "ISAAC (rand.c 20010626)", nwipe_isaac_init, nwipe_isaac_read };
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nwipe_prng_t nwipe_isaac64 = { "ISAAC-64 (isaac64.c)", nwipe_isaac64_init, nwipe_isaac64_read };
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nwipe_prng_t nwipe_isaac = { "ISAAC", nwipe_isaac_init, nwipe_isaac_read };
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nwipe_prng_t nwipe_isaac64 = { "ISAAC-64", nwipe_isaac64_init, nwipe_isaac64_read };
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/* ALFG PRNG Structure */
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nwipe_prng_t nwipe_add_lagg_fibonacci_prng = { "Lagged Fibonacci generator",
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nwipe_prng_t nwipe_add_lagg_fibonacci_prng = { "Lagged Fibonacci",
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nwipe_add_lagg_fibonacci_prng_init,
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nwipe_add_lagg_fibonacci_prng_read };
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/* XOROSHIRO-256 PRNG Structure */
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Block a user