TOTPFit/lib/totp-quickjs/base32decoder.js

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JavaScript
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export function decode(base32) {
for (
var base32chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",
bits = "",
hex = "",
i = 0;
i < base32.length;
i++
) {
var val = base32chars.indexOf(base32.charAt(i).toUpperCase());
bits += leftpad(val.toString(2), 5, "0");
}
for (i = 0; i + 4 <= bits.length; i += 4) {
var chunk = bits.substr(i, 4);
hex += parseInt(chunk, 2).toString(16);
}
return hex;
}
function leftpad(str, len, pad) {
return (
len + 1 >= str.length &&
(str = new Array(len + 1 - str.length).join(pad) + str),
str
);
}