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add new operation CRC-16-CCITT Checksum

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MikeCAT 2022-11-03 08:15:22 +09:00
parent ed8bd34915
commit 60ea87c1ad
5 changed files with 110 additions and 0 deletions
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1
src/core/config/Categories.json
View file

@ -379,6 +379,7 @@
"Luhn Checksum",
"CRC-8 Checksum",
"CRC-16 Checksum",
"CRC-16-CCITT Checksum",
"CRC-32 Checksum",
"TCP/IP Checksum"
]

62
src/core/operations/CRC16CCITTChecksum.mjs Normal file
View file

@ -0,0 +1,62 @@
/**
* @author mikecat
* @copyright Crown Copyright 2022
* @license Apache-2.0
*/
import Operation from "../Operation.mjs";
import Utils from "../Utils.mjs";
/**
* CRC-16-CCITT Checksum operation
*/
class CRC16CCITTChecksum extends Operation {
/**
* CRC16CCITTChecksum constructor
*/
constructor() {
super();
this.name = "CRC-16-CCITT Checksum";
this.module = "Crypto";
this.description = "Another version of CRC-16, used in XMODEM/YMODEM protocol.";
this.infoURL = "https://wikipedia.org/wiki/Cyclic_redundancy_check";
this.inputType = "ArrayBuffer";
this.outputType = "string";
this.args = [
];
this.crcTable = [];
for (let i = 0; i < 256; i++) {
let value = i << 8;
for (let j = 0; j < 8; j++) {
value <<= 1;
if (value & 0x10000) value ^= 0x1021;
value &= 0xffff;
}
this.crcTable.push(value);
}
}
/**
* @param {ArrayBuffer} input
* @param {Object[]} args
* @returns {string}
*/
run(input, args) {
if (ArrayBuffer.isView(input)) {
input = new Uint8Array(input.buffer, input.byteOffset, input.byteLength);
} else {
input = new Uint8Array(input);
}
let crc = 0;
for (let i = 0; i < input.length; i++) {
crc = ((crc << 8) ^ this.crcTable[((crc >> 8) ^ input[i]) & 0xff]) & 0xffff;
}
return Utils.hex(crc, 4);
}
}
export default CRC16CCITTChecksum;

2
src/core/operations/GenerateAllHashes.mjs
View file

@ -29,6 +29,7 @@ import Fletcher64Checksum from "./Fletcher64Checksum.mjs";
import Adler32Checksum from "./Adler32Checksum.mjs";
import CRC8Checksum from "./CRC8Checksum.mjs";
import CRC16Checksum from "./CRC16Checksum.mjs";
import CRC16CCITTChecksum from "./CRC16CCITTChecksum.mjs";
import CRC32Checksum from "./CRC32Checksum.mjs";
import BLAKE2b from "./BLAKE2b.mjs";
import BLAKE2s from "./BLAKE2s.mjs";
@ -122,6 +123,7 @@ class GenerateAllHashes extends Operation {
{name: "Adler-32", algo: (new Adler32Checksum), inputType: "byteArray", params: []},
{name: "CRC-8", algo: (new CRC8Checksum), inputType: "arrayBuffer", params: ["CRC-8"]},
{name: "CRC-16", algo: (new CRC16Checksum), inputType: "arrayBuffer", params: []},
{name: "CRC-16-CCITT", algo: (new CRC16CCITTChecksum), inputType: "arrayBuffer", params: []},
{name: "CRC-32", algo: (new CRC32Checksum), inputType: "arrayBuffer", params: []}
];
}

44
tests/operations/tests/Checksum.mjs
View file

@ -194,6 +194,50 @@ TestRegister.addTests([
}
]
},
{
name: "CRC-16-CCITT: nothing",
input: "",
expectedOutput: "0000",
recipeConfig: [
{
"op": "CRC-16-CCITT Checksum",
"args": []
}
]
},
{
name: "CRC-16-CCITT: basic string",
input: BASIC_STRING,
expectedOutput: "03ef",
recipeConfig: [
{
"op": "CRC-16-CCITT Checksum",
"args": []
}
]
},
{
name: "CRC-16-CCITT: UTF-8",
input: UTF8_STR,
expectedOutput: "cf94",
recipeConfig: [
{
"op": "CRC-16-CCITT Checksum",
"args": []
}
]
},
{
name: "CRC-16-CCITT: all bytes",
input: ALL_BYTES,
expectedOutput: "7e55",
recipeConfig: [
{
"op": "CRC-16-CCITT Checksum",
"args": []
}
]
},
{
name: "CRC-32: nothing",
input: "",

1
tests/operations/tests/GenerateAllHashes.mjs
View file

@ -63,6 +63,7 @@ Fletcher-64: 00000459000001c0
Adler-32: 045d01c1
CRC-8: b9
CRC-16: f82e
CRC-16-CCITT: 9b06
CRC-32: d87f7e0c
`,
recipeConfig: [