NetsBlox / speckjs

Speck block cipher implementation in Javascript

JS Speck Cipher Implementation

Gotchas in JS

• % is the remainder operator and not modulo

Bitwise operations in JavaScript

Ref: MDN

• Bitwise operators perform their operations on binary representations, but they return standard JavaScript numerical values.
• JavaScript does not have an unsigned int
• The operand of all bitwise operators are converted to singed 32-bit integers in two's complement format.
• << and >> operate on signed int whereas >>> operates as if the number is unsigned

TODO

• remove bitwise package dep
• add more tests for circular shifts and remove the extras
• refactor expand key