dchest

// Note: this is for scrypt implementation, which doesn't use diagonal constants, 
// so the order of loading from x is different than in normal Salsa20 implementation.

function salsa20_8(x) {
    var j0  = (x[ 0] & 0xff) | ((x[ 1] & 0xff)<<8) | ((x[ 2] & 0xff)<<16) | ((x[ 3] & 0xff)<<24);
    var j1  = (x[ 4] & 0xff) | ((x[ 5] & 0xff)<<8) | ((x[ 6] & 0xff)<<16) | ((x[ 7] & 0xff)<<24);
    var j2  = (x[ 8] & 0xff) | ((x[ 9] & 0xff)<<8) | ((x[10] & 0xff)<<16) | ((x[11] & 0xff)<<24);
    var j3  = (x[12] & 0xff) | ((x[13] & 0xff)<<8) | ((x[14] & 0xff)<<16) | ((x[15] & 0xff)<<24);
    var j4  = (x[16] & 0xff) | ((x[17] & 0xff)<<8) | ((x[18] & 0xff)<<16) | ((x[19] & 0xff)<<24);
    var j5  = (x[20] & 0xff) | ((x[21] & 0xff)<<8) | ((x[22] & 0xff)<<16) | ((x[23] & 0xff)<<24);

dchest

[[[ Speed Tests ]]]

Bulk speed test - 262144-byte keys
Alignment  0 -  0.925 bytes/cycle - 2646.33 MiB/sec @ 3 ghz
Alignment  1 -  0.813 bytes/cycle - 2325.74 MiB/sec @ 3 ghz
Alignment  2 -  0.813 bytes/cycle - 2325.73 MiB/sec @ 3 ghz
Alignment  3 -  0.813 bytes/cycle - 2325.73 MiB/sec @ 3 ghz
Alignment  4 -  0.813 bytes/cycle - 2325.74 MiB/sec @ 3 ghz
Alignment  5 -  0.813 bytes/cycle - 2325.73 MiB/sec @ 3 ghz
Alignment  6 -  0.813 bytes/cycle - 2325.73 MiB/sec @ 3 ghz

dchest

#include <stdint.h>
#include <stdio.h>

/* Permutations of {0, ..., 15} */
static const uint8_t SIGMA[14][16] = {
	{  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15 },
	{ 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3 },
	{ 11,  8, 12,  0,  5,  2, 15, 13, 10, 14,  3,  6,  7,  1,  9,  4 },
	{  7,  9,  3,  1, 13, 12, 11, 14,  2,  6,  5, 10,  4,  0, 15,  8 },
	{  9,  0,  5,  7,  2,  4, 10, 15, 14,  1, 11, 12,  6,  8,  3, 13 },

dchest

package siphash

// Hash returns the 64-bit SipHash-2-4 of the given 64-bit message m with two 64-bit
// parts of 128-bit key: k0 and k1.
func Hash(k0, k1, m uint64) uint64 {
	// Initialization.
	v0 := k0 ^ 0x736f6d6570736575
	v1 := k1 ^ 0x646f72616e646f6d
	v2 := k0 ^ 0x6c7967656e657261
	v3 := k1 ^ 0x7465646279746573

dchest

// standard interface
h := blake256.New() // or sha256.New(), or anything else
h.Write([]byte("hello"))
result := h.Sum(nil) // output 256-byte hash

// standard interface too
h := skein.NewHash(32)
h.Write([]byte("hello"))
result := h.Sum(nil) // output 256-byte hash
// but also any hash length via OutputReader

dchest

#import <Cocoa/Cocoa.h>

@interface CRTransparentSearchFieldCell : NSSearchFieldCell

@end

dchest

 Мы  изучаем  каждый  чужой  автомобиль,
который появляется  на  свет,  чтобы  открыть  детали,  которые  могут  быть
разработаны дальше  или  приспособлены к нашим  автомобилям. Если кто-нибудь
работает  лучше  нас,  мы, по крайней  мере,  хотим это  знать и  для  этого
покупаем по экземпляру каждого, вновь выходящего автомобиля. Обыкновенно  на
автомобиле некоторое время  ездят и пробуют его,  затем разбирают на части и
точно исследуют,  чтобы  установить, как и  из  чего  сконструирована каждая
часть. Где-нибудь  по соседству от Дирборна можно встретить  образец каждого
автомобиля, который  фабриковался  когда-либо  на  свете.  Время от времени,
когда мы  опять  покупаем новый автомобиль,  об  этом  печатают  в газетах и

dchest

MASTER CARD format:

1 byte | 1 byte | 2 bytes | 2 bytes | 32 bytes |  32 bytes  | 16 bytes | 6 bytes | 8 bytes
=======|========|=========|=========|==========|***********************|=========|========
version| logN   |    r    |    p    |   salt   |   enc key  | mac key  |   hash  | MAC
-------|---------------------------------------|-----------------------|---------|--------
       |     blakrypt parameters               |encrypted with nonce=0 | 

enc key, mac key -- randomly generated keys for cards
(stored in Master card encrypted and authenticated with keys derived from password.)

dchest

5.5. Using wrong tools

Using the wrong tools is obviously an intrinsically bad idea. The trouble is
that often one discovers a tool’s inadequacy only after having invested a
substantial amount of effort to 24 build and understand it, and the tool thus
having become “valuable”. This happened to the author and his team when
implementing the first Pascal compiler in 1969. 

The tools available for writing programs were an assembler, a Fortran and an
Algol compiler. The latter was so poorly implemented that we did not dare rely

dchest

(defun rst-to-html ()
  "Convert current file from reStructuredText to HTML, outputting to file.html."
  (interactive)
  (when (not (stringp (buffer-file-name)))
    (error "No file name"))

  (message "Running...")
  (shell-command
   (concat "rst2html -d "
	   (shell-quote-argument (buffer-file-name))