const text = inputs.text || ''; const sha256 = (ascii) => { const rightRotate = (value, amount) => (value >>> amount) | (value << (32 - amount)); const mathPow = Math.pow, maxWord = mathPow(2, 32); let result = '', words = [], asciiBitLength = ascii.length * 8; let hash = [], k = []; let primeCounter = 0; const isComposite = {}; for (let candidate = 2; primeCounter < 64; candidate++) { if (!isComposite[candidate]) { for (let i = 0; i < 313; i += candidate) isComposite[i] = candidate; hash[primeCounter] = (mathPow(candidate, 0.5) * maxWord) | 0; k[primeCounter++] = (mathPow(candidate, 1/3) * maxWord) | 0; } } ascii += '\x80'; while (ascii.length % 64 - 56) ascii += '\x00'; for (let i = 0; i < ascii.length; i++) { const j = ascii.charCodeAt(i); if (j >> 8) return; words[i >> 2] |= j << ((3 - i) % 4) * 8; } words[words.length] = ((asciiBitLength / maxWord) | 0); words[words.length] = (asciiBitLength); for (let j = 0; j < words.length;) { const w = words.slice(j, j += 16); const oldHash = hash.slice(0); for (let i = 0; i < 64; i++) { const w15 = w[i - 15], w2 = w[i - 2]; const a = hash[0], e = hash[4]; const temp1 = hash[7] + (rightRotate(e, 6) ^ rightRotate(e, 11) ^ rightRotate(e, 25)) + ((e & hash[5]) ^ (~e & hash[6])) + k[i] + (w[i] = (i < 16) ? w[i] : (w[i - 16] + (rightRotate(w15, 7) ^ rightRotate(w15, 18) ^ (w15 >>> 3)) + w[i - 7] + (rightRotate(w2, 17) ^ rightRotate(w2, 19) ^ (w2 >>> 10))) | 0); const temp2 = (rightRotate(a, 2) ^ rightRotate(a, 13) ^ rightRotate(a, 22)) + ((a & hash[1]) ^ (a & hash[2]) ^ (hash[1] & hash[2])); hash = [(temp1 + temp2) | 0].concat(hash); hash[4] = (hash[4] + temp1) | 0; } for (let i = 0; i < 8; i++) hash[i] = (hash[i] + oldHash[i]) | 0; } for (let i = 0; i < 8; i++) { for (let j = 3; j + 1; j--) { const b = (hash[i] >> (j * 8)) & 255; result += ((b < 16) ? '0' : '') + b.toString(16); } } return result; }; const utf8 = unescape(encodeURIComponent(text)); const hash = sha256(utf8); return { hash, inputLength: text.length, hashLength: hash.length };

SHA256 Hash Generator

Frequently Asked Questions

Is SHA-256 secure?

What is SHA-256 used for?