import { Hasher, Hasher32, WordArray } from "./core.mjs";

//#region src/sha256.ts
const { H, K } = /* @__PURE__ */ (() => {
	const _H = [];
	const _K = [];
	const isPrime = (n$1) => {
		const sqrtN = Math.sqrt(n$1);
		for (let factor = 2; factor <= sqrtN; factor += 1) if (!(n$1 % factor)) return false;
		return true;
	};
	const getFractionalBits = (n$1) => (n$1 - (n$1 | 0)) * 4294967296 | 0;
	let n = 2;
	let nPrime = 0;
	while (nPrime < 64) {
		if (isPrime(n)) {
			if (nPrime < 8) _H[nPrime] = getFractionalBits(n ** (1 / 2));
			_K[nPrime] = getFractionalBits(n ** (1 / 3));
			nPrime += 1;
		}
		n += 1;
	}
	return {
		H: _H,
		K: _K
	};
})();
const W = [];
/**
* SHA-256 hash algorithm.
*/
var SHA256Algo = class extends Hasher32 {
	_doReset() {
		this._hash = new WordArray(H.slice(0));
	}
	_doProcessBlock(M, offset) {
		const _H = this._hash.words;
		let a = _H[0];
		let b = _H[1];
		let c = _H[2];
		let d = _H[3];
		let e = _H[4];
		let f = _H[5];
		let g = _H[6];
		let h = _H[7];
		for (let i = 0; i < 64; i += 1) {
			if (i < 16) W[i] = M[offset + i] | 0;
			else {
				const gamma0x = W[i - 15];
				const gamma0 = (gamma0x << 25 | gamma0x >>> 7) ^ (gamma0x << 14 | gamma0x >>> 18) ^ gamma0x >>> 3;
				const gamma1x = W[i - 2];
				const gamma1 = (gamma1x << 15 | gamma1x >>> 17) ^ (gamma1x << 13 | gamma1x >>> 19) ^ gamma1x >>> 10;
				W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16];
			}
			const ch = e & f ^ ~e & g;
			const maj = a & b ^ a & c ^ b & c;
			const sigma0 = (a << 30 | a >>> 2) ^ (a << 19 | a >>> 13) ^ (a << 10 | a >>> 22);
			const sigma1 = (e << 26 | e >>> 6) ^ (e << 21 | e >>> 11) ^ (e << 7 | e >>> 25);
			const t1 = h + sigma1 + ch + K[i] + W[i];
			const t2 = sigma0 + maj;
			h = g;
			g = f;
			f = e;
			e = d + t1 | 0;
			d = c;
			c = b;
			b = a;
			a = t1 + t2 | 0;
		}
		_H[0] = _H[0] + a | 0;
		_H[1] = _H[1] + b | 0;
		_H[2] = _H[2] + c | 0;
		_H[3] = _H[3] + d | 0;
		_H[4] = _H[4] + e | 0;
		_H[5] = _H[5] + f | 0;
		_H[6] = _H[6] + g | 0;
		_H[7] = _H[7] + h | 0;
	}
	_doFinalize() {
		const data = this._data;
		const dataWords = data.words;
		const nBitsTotal = this._nDataBytes * 8;
		const nBitsLeft = data.sigBytes * 8;
		dataWords[nBitsLeft >>> 5] |= 128 << 24 - nBitsLeft % 32;
		dataWords[(nBitsLeft + 64 >>> 9 << 4) + 14] = Math.floor(nBitsTotal / 4294967296);
		dataWords[(nBitsLeft + 64 >>> 9 << 4) + 15] = nBitsTotal;
		data.sigBytes = dataWords.length * 4;
		this._process();
		return this._hash;
	}
	clone() {
		const clone = super.clone.call(this);
		clone._hash = this._hash.clone();
		return clone;
	}
};
/**
* Shortcut function to the hasher's object interface.
*
* @param message - The message to hash.
* @returns The hash.
*
* @example
* ```js
* const hash = SHA256('message');
* const hash = SHA256(wordArray);
* ```
*/
const SHA256 = Hasher._createHelper(SHA256Algo);
/**
* Shortcut function to the HMAC's object interface.
*
* @param message - The message to hash.
* @param key - The secret key.
* @returns The HMAC.
*
* @example
* ```js
* const hmac = HmacSHA256(message, key);
* ```
*/
const HmacSHA256 = Hasher._createHmacHelper(SHA256Algo);

//#endregion
export { HmacSHA256, SHA256, SHA256Algo };
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