@needle-tools/engine
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Needle Engine is a web-based runtime for 3D apps. It runs on your machine for development with great integrations into editors like Unity or Blender - and can be deployed onto any device! It is flexible, extensible and networking and XR are built-in.
112 lines • 5.8 kB
JavaScript
/**
* Pure-JS hashing utilities — no external dependencies, works in browser and Node/SSR.
*/
// MD5 based on the public-domain RSA Data Security MD5 algorithm.
function md5Bytes(input) {
function safeAdd(x, y) { const lsw = (x & 0xffff) + (y & 0xffff); return ((x >> 16) + (y >> 16) + (lsw >> 16)) << 16 | lsw & 0xffff; }
function bitRotateLeft(num, cnt) { return num << cnt | num >>> 32 - cnt; }
function md5cmn(q, a, b, x, s, t) { return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b); }
function md5ff(a, b, c, d, x, s, t) { return md5cmn(b & c | ~b & d, a, b, x, s, t); }
function md5gg(a, b, c, d, x, s, t) { return md5cmn(b & d | c & ~d, a, b, x, s, t); }
function md5hh(a, b, c, d, x, s, t) { return md5cmn(b ^ c ^ d, a, b, x, s, t); }
function md5ii(a, b, c, d, x, s, t) { return md5cmn(c ^ (b | ~d), a, b, x, s, t); }
const len8 = input.length;
const padded = new Uint8Array((Math.ceil((len8 + 9) / 64) * 64));
padded.set(input);
padded[len8] = 0x80;
const view = new DataView(padded.buffer);
view.setUint32(padded.length - 8, len8 << 3, true);
view.setUint32(padded.length - 4, (len8 / 0x20000000) | 0, true);
let a = 0x67452301, b = 0xefcdab89, c = 0x98badcfe, d = 0x10325476;
for (let i = 0; i < padded.length >> 2; i += 16) {
const M = (j) => view.getInt32((i + j) * 4, true);
const [oa, ob, oc, od] = [a, b, c, d];
a = md5ff(a, b, c, d, M(0), 7, -680876936);
d = md5ff(d, a, b, c, M(1), 12, -389564586);
c = md5ff(c, d, a, b, M(2), 17, 606105819);
b = md5ff(b, c, d, a, M(3), 22, -1044525330);
a = md5ff(a, b, c, d, M(4), 7, -176418897);
d = md5ff(d, a, b, c, M(5), 12, 1200080426);
c = md5ff(c, d, a, b, M(6), 17, -1473231341);
b = md5ff(b, c, d, a, M(7), 22, -45705983);
a = md5ff(a, b, c, d, M(8), 7, 1770035416);
d = md5ff(d, a, b, c, M(9), 12, -1958414417);
c = md5ff(c, d, a, b, M(10), 17, -42063);
b = md5ff(b, c, d, a, M(11), 22, -1990404162);
a = md5ff(a, b, c, d, M(12), 7, 1804603682);
d = md5ff(d, a, b, c, M(13), 12, -40341101);
c = md5ff(c, d, a, b, M(14), 17, -1502002290);
b = md5ff(b, c, d, a, M(15), 22, 1236535329);
a = md5gg(a, b, c, d, M(1), 5, -165796510);
d = md5gg(d, a, b, c, M(6), 9, -1069501632);
c = md5gg(c, d, a, b, M(11), 14, 643717713);
b = md5gg(b, c, d, a, M(0), 20, -373897302);
a = md5gg(a, b, c, d, M(5), 5, -701558691);
d = md5gg(d, a, b, c, M(10), 9, 38016083);
c = md5gg(c, d, a, b, M(15), 14, -660478335);
b = md5gg(b, c, d, a, M(4), 20, -405537848);
a = md5gg(a, b, c, d, M(9), 5, 568446438);
d = md5gg(d, a, b, c, M(14), 9, -1019803690);
c = md5gg(c, d, a, b, M(3), 14, -187363961);
b = md5gg(b, c, d, a, M(8), 20, 1163531501);
a = md5gg(a, b, c, d, M(13), 5, -1444681467);
d = md5gg(d, a, b, c, M(2), 9, -51403784);
c = md5gg(c, d, a, b, M(7), 14, 1735328473);
b = md5gg(b, c, d, a, M(12), 20, -1926607734);
a = md5hh(a, b, c, d, M(5), 4, -378558);
d = md5hh(d, a, b, c, M(8), 11, -2022574463);
c = md5hh(c, d, a, b, M(11), 16, 1839030562);
b = md5hh(b, c, d, a, M(14), 23, -35309556);
a = md5hh(a, b, c, d, M(1), 4, -1530992060);
d = md5hh(d, a, b, c, M(4), 11, 1272893353);
c = md5hh(c, d, a, b, M(7), 16, -155497632);
b = md5hh(b, c, d, a, M(10), 23, -1094730640);
a = md5hh(a, b, c, d, M(13), 4, 681279174);
d = md5hh(d, a, b, c, M(0), 11, -358537222);
c = md5hh(c, d, a, b, M(3), 16, -722521979);
b = md5hh(b, c, d, a, M(6), 23, 76029189);
a = md5hh(a, b, c, d, M(9), 4, -640364487);
d = md5hh(d, a, b, c, M(12), 11, -421815835);
c = md5hh(c, d, a, b, M(15), 16, 530742520);
b = md5hh(b, c, d, a, M(2), 23, -995338651);
a = md5ii(a, b, c, d, M(0), 6, -198630844);
d = md5ii(d, a, b, c, M(7), 10, 1126891415);
c = md5ii(c, d, a, b, M(14), 15, -1416354905);
b = md5ii(b, c, d, a, M(5), 21, -57434055);
a = md5ii(a, b, c, d, M(12), 6, 1700485571);
d = md5ii(d, a, b, c, M(3), 10, -1894986606);
c = md5ii(c, d, a, b, M(10), 15, -1051523);
b = md5ii(b, c, d, a, M(1), 21, -2054922799);
a = md5ii(a, b, c, d, M(8), 6, 1873313359);
d = md5ii(d, a, b, c, M(15), 10, -30611744);
c = md5ii(c, d, a, b, M(6), 15, -1560198380);
b = md5ii(b, c, d, a, M(13), 21, 1309151649);
a = md5ii(a, b, c, d, M(4), 6, -145523070);
d = md5ii(d, a, b, c, M(11), 10, -1120210379);
c = md5ii(c, d, a, b, M(2), 15, 718787259);
b = md5ii(b, c, d, a, M(9), 21, -343485551);
a = safeAdd(a, oa);
b = safeAdd(b, ob);
c = safeAdd(c, oc);
d = safeAdd(d, od);
}
const result = new DataView(new ArrayBuffer(16));
result.setUint32(0, a, true);
result.setUint32(4, b, true);
result.setUint32(8, c, true);
result.setUint32(12, d, true);
return Array.from(new Uint8Array(result.buffer));
}
/** Returns the MD5 hash of the given bytes as a lowercase hex string. */
export function md5Hex(input) {
return md5Bytes(input).map(b => b.toString(16).padStart(2, "0")).join("");
}
/** Returns the MD5 hash of the given bytes as a raw byte array. */
export function md5AsBytes(input) {
return md5Bytes(input);
}
/** Returns the SHA-256 hash of the given buffer as a base64 string. */
export function sha256Base64(buffer) {
return crypto.subtle.digest("SHA-256", new Uint8Array(buffer)).then(res => btoa(String.fromCharCode(...new Uint8Array(res))));
}
//# sourceMappingURL=engine_utils_hash.js.map