@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.
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text/typescript
/**
* 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: Uint8Array): number[] {
function safeAdd(x: number, y: number) { const lsw = (x & 0xffff) + (y & 0xffff); return ((x >> 16) + (y >> 16) + (lsw >> 16)) << 16 | lsw & 0xffff; }
function bitRotateLeft(num: number, cnt: number) { return num << cnt | num >>> 32 - cnt; }
function md5cmn(q: number, a: number, b: number, x: number, s: number, t: number) { return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b); }
function md5ff(a: number, b: number, c: number, d: number, x: number, s: number, t: number) { return md5cmn(b & c | ~b & d, a, b, x, s, t); }
function md5gg(a: number, b: number, c: number, d: number, x: number, s: number, t: number) { return md5cmn(b & d | c & ~d, a, b, x, s, t); }
function md5hh(a: number, b: number, c: number, d: number, x: number, s: number, t: number) { return md5cmn(b ^ c ^ d, a, b, x, s, t); }
function md5ii(a: number, b: number, c: number, d: number, x: number, s: number, t: number) { 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: number) => 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: Uint8Array): string {
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: Uint8Array): number[] {
return md5Bytes(input);
}
/** Returns the SHA-256 hash of the given buffer as a base64 string. */
export function sha256Base64(buffer: ArrayBuffer): Promise<string> {
return crypto.subtle.digest("SHA-256", new Uint8Array(buffer)).then(res =>
btoa(String.fromCharCode(...new Uint8Array(res)))
);
}