Initial commit

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-05-31 18:44:04 +08:00
commit 436a9631fc
8616 changed files with 1389957 additions and 0 deletions
@@ -0,0 +1,56 @@
+export function makeDERLength(length) {
+    if (length < 0x80) {
+        return [length];
+    }
+    var r = [];
+    while (true) {
+        r.push(length & 0xff);
+        if (length < 0x100) {
+            break;
+        }
+        length >>= 8;
+    }
+    r.push(0x80 + r.length);
+    return r.reverse();
+}
+export function makeDERIA5String(text) {
+    // convert to char-code array and filter to [0-127]
+    var r = [].map
+        .call(text, function (c) { return c.charCodeAt(0); })
+        .filter(function (n) { return n < 128; });
+    return [0x16].concat(makeDERLength(r.length)).concat(r);
+}
+export function makeDERBMPString(text) {
+    // convert to char-code array
+    // NOTE: In ECMAScript `charCodeAt` returns surrogate pair for >=0x10000 codes,
+    //   and surrogate pair is valid for BMPString data
+    var r = [].map.call(text, function (c) { return c.charCodeAt(0); });
+    var ua = new Uint8Array(r.length * 2);
+    var dv = new DataView(ua.buffer);
+    // store codes as big-endian
+    r.forEach(function (v, i) {
+        dv.setUint16(i * 2, v, false);
+    });
+    return [0x1e].concat(makeDERLength(ua.length)).concat(
+    // convert Uint8Array to number[] (not using spread operator)
+    [].slice.call(ua));
+}
+export function makeDEROctetString(bin) {
+    if (!(bin instanceof Array)) {
+        // convert Uint8Array to number[] (not using spread operator)
+        bin = [].slice.call(bin);
+    }
+    return [0x04].concat(makeDERLength(bin.length)).concat(bin);
+}
+export function makeDERTaggedData(tag, body) {
+    return [0xa0 + tag].concat(makeDERLength(body.length)).concat(body);
+}
+export function makeDERSequence(body) {
+    return [0x30].concat(makeDERLength(body.length)).concat(body);
+}
+export function arrayToDERSet(items) {
+    var r = items.reduce(function (prev, item) {
+        return prev.concat(item instanceof Array ? item : item.toDER());
+    }, []);
+    return [0x31].concat(makeDERLength(r.length)).concat(r);
+}