48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
function base32_nopad_encode(slice) {
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const encoder = new base32.Encoder({ type: "rfc4648", lc: true });
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const code = encoder.write(slice).finalize();
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return code.replaceAll('=', '');
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}
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function base64_decode(str_b64) {
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const raw_str = atob(str_b64);
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const length = raw_str.length;
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var b = [];
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for (var i = 0; i < length; i++) {
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b.push(raw_str.charCodeAt(i));
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}
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return b;
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}
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class KeyedAddress {
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constructor(local_part, separator, domain, key_b64) {
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this.local_part = local_part;
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this.domain = domain;
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this.separator = separator;
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this.key = base64_decode(key_b64);
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}
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genSubAddr(sub_addr_name) {
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var hasher = sha256.hmac.create(this.key);
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hasher.update(this.local_part);
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hasher.update(this.separator);
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hasher.update(sub_addr_name);
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const hash = hasher.array();
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const offset = hash[hash.length - 1] & 0xf;
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const reduced_hash = hash.slice(offset, offset + 5);
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const code = base32_nopad_encode(reduced_hash);
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return `${this.local_part}${this.separator}${sub_addr_name}${this.separator}${code}@${this.domain}`
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}
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}
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['a', 'b'].forEach((e) => {
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const test_addr = new KeyedAddress(e, '+', 'example.org', '11voiefK5PgCX5F1TTcuoQ==');
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console.log(test1);
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console.log('Sub-addr: ' + test_addr.genSubAddr('test'));
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});
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window.addEventListener('load', () => {
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if ('serviceWorker' in navigator) {
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navigator.serviceWorker.register('/sw.js');
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}
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});
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