aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

Initial data commit

Browse source
This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
199087 changed files with 3378941 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

31
Task/Main-step-of-GOST-28147-89/JavaScript/main-step-of-gost-28147-89.js Normal file
View file

@ -0,0 +1,31 @@
const Таблица_замен = [
[ 4, 10, 9, 2, 13, 8, 0, 14, 6, 11, 1, 12, 7, 15, 5, 3],
[14, 11, 4, 12, 6, 13, 15, 10, 2, 3, 8, 1, 0, 7, 5, 9],
[ 5, 8, 1, 13, 10, 3, 4, 2, 14, 15, 12, 7, 6, 0, 9, 11],
[ 7, 13, 10, 1, 0, 8, 9, 15, 14, 4, 6, 12, 11, 2, 5, 3],
[ 6, 12, 7, 1, 5, 15, 13, 8, 4, 10, 9, 14, 0, 3, 11, 2],
[ 4, 11, 10, 0, 7, 2, 1, 13, 3, 6, 8, 5, 9, 12, 15, 14],
[13, 11, 4, 1, 3, 15, 5, 9, 0, 10, 14, 7, 6, 8, 2, 12],
[ 1, 15, 13, 0, 5, 7, 10, 4, 9, 2, 3, 14, 6, 11, 8, 12]
];
const Основной_шаг = (блок_текста, элемент_ключа, ТЗ) => {
const
N = блок_текста.slice(0),
S = N[0] + элемент_ключа & 0xFFFFFFFF;
let нов_S = 0;
for (let сч = 0; сч < 4; сч++) {
const яч = (S >>> (сч << 3)) & 0xFF;
нов_S +=
ТЗ[сч * 2][яч & 0x0F]
+ (ТЗ[сч * 2 + 1][яч >>> 4] << 4)
<< (сч << 3);
}
нов_S =
(нов_S << 11)
+ (нов_S >>> 21)
& 0xFFFFFFFF
^ N[1];
N[1] = N[0]; N[0] = нов_S;
return N;
};