mirror of
https://github.com/martijnvanbrummelen/nwipe.git
synced 2026-02-20 13:42:14 +00:00
Merge pull request #699 from PartialVolume/update_prng_text
Reformat layout of PRNG help text.
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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