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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | 1x 1x 7x 1x 8x 2x 1x 2x 2x 2x 1x | import { crc32c } from "@node-lightning/checksum";
/**
* CRC32C checksum for the provided value
*/
export class Checksum {
public static fromBuffer(buf: Buffer): Checksum {
return new Checksum(crc32c(buf));
}
public static empty(): Checksum {
return new Checksum(0);
}
private _checksum: number;
private constructor(checksum: number) {
this._checksum = checksum;
}
public equals(other: Checksum): boolean {
return this._checksum === other._checksum;
}
public toNumber(): number {
return this._checksum;
}
public toBuffer(): Buffer {
const buf = Buffer.alloc(4);
buf.writeUInt32BE(this._checksum, 0);
return buf;
}
public toString(): string {
return this._checksum.toString(16);
}
}
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