asn1-ts/dist/utils/unpackBits.mjs

ASN.1 encoding and decoding, including BER, CER, and DER.

import { TRUE_BIT } from "../macros.mjs";
export default function unpackBits(bytes) {
    const ret = new Uint8ClampedArray(bytes.length << 3);
    for (let byte = 0; byte < bytes.length; byte++) {
        for (let bit = 0; bit < 8; bit++) {
            if (bytes[byte] & (0x01 << (7 - bit))) {
                ret[(byte << 3) + bit] = TRUE_BIT;
            }
        }
    }
    return ret;
}