Fydler UtilityBelt - Secure Password Hashing Tool (Argon2id, BCrypt, SHA, MD5)

Password Hashing

Security & Authentication Tool

Generate Hash

Password

Algorithm

Iterations

Memory (KiB)

Parallelism

Salt (string)

Resulting Hash

---

Verify Password

Known Hash

Password to Check

Security Note

This tool runs entirely in your browser. Your passwords and hashes are never sent to our server. Argon2id and BCrypt are modern, recommended hashing algorithms that include protection against brute-force attacks.

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lucide.createIcons(); const algoSelect = document.getElementById('hash-algorithm'); const argonParams = document.getElementById('argon2-params'); const bcryptParams = document.getElementById('bcrypt-params'); algoSelect.addEventListener('change', () => { argonParams.classList.toggle('hidden', algoSelect.value !== 'argon2id'); bcryptParams.classList.toggle('hidden', algoSelect.value !== 'bcrypt'); }); document.getElementById('btn-hash').addEventListener('click', generateHash); document.getElementById('btn-verify').addEventListener('click', verifyHash); document.getElementById('btn-copy-hash').addEventListener('click', () => { const text = document.getElementById('gen-result').textContent; if (text !== '---') { navigator.clipboard.writeText(text); showToast('Hash copied!'); } }); async function generateHash() { const password = document.getElementById('gen-password').value; if (!password) return alert('Please enter a password'); const algo = document.getElementById('hash-algorithm').value; const resultEl = document.getElementById('gen-result'); resultEl.textContent = 'Computing...'; try { let hash; switch (algo) { case 'argon2id': let salt = document.getElementById('argon-salt').value; if (!salt) { salt = Array.from(window.crypto.getRandomValues(new Uint8Array(16))) .map(b => b.toString(16).padStart(2, '0')) .join(''); document.getElementById('argon-salt').value = salt; } const argonOptions = { password, salt, iterations: parseInt(document.getElementById('argon-iterations').value), memorySize: parseInt(document.getElementById('argon-memory').value), parallelism: parseInt(document.getElementById('argon-parallelism').value), hashLength: 32, outputType: 'encoded' }; hash = await hashwasm.argon2id(argonOptions); break; case 'bcrypt': const cost = parseInt(document.getElementById('bcrypt-cost').value); hash = dcodeIO.bcrypt.hashSync(password, cost); break; case 'sha256': hash = await hashwasm.sha256(password); break; case 'sha512': hash = await hashwasm.sha512(password); break; case 'md5': hash = await hashwasm.md5(password); break; } resultEl.textContent = hash; } catch (err) { console.error(err); resultEl.textContent = 'Error computing hash'; } } async function verifyHash() { const hash = document.getElementById('verify-hash').value.trim(); const password = document.getElementById('verify-password').value; const resBox = document.getElementById('verify-result'); const resIcon = document.getElementById('verify-result-icon'); const resText = document.getElementById('verify-result-text'); if (!hash || !password) return alert('Please enter both hash and password'); let match = false; try { if (hash.startsWith('$argon2')) { const verifyRes = await hashwasm.argon2id({ password, salt: document.getElementById('argon-salt').value, iterations: parseInt(document.getElementById('argon-iterations').value), memorySize: parseInt(document.getElementById('argon-memory').value), parallelism: parseInt(document.getElementById('argon-parallelism').value), hashLength: 32, outputType: 'encoded' match = verifyRes === hash; } else if (hash.startsWith('$2a$') || hash.startsWith('$2b$')) { match = dcodeIO.bcrypt.compareSync(password, hash); } else { const sha256 = await hashwasm.sha256(password); const sha512 = await hashwasm.sha512(password); const md5 = await hashwasm.md5(password); match = (hash === sha256 || hash === sha512 || hash === md5); } resBox.classList.remove('hidden'); if (match) { resBox.className = 'verify-result success'; resText.textContent = 'Password matches!'; resIcon.setAttribute('data-lucide', 'check-circle'); } else { resBox.className = 'verify-result error'; resText.textContent = 'Passwords do not match'; resIcon.setAttribute('data-lucide', 'x-circle'); } lucide.createIcons(); } catch (err) { console.error(err); alert('Verification failed. Invalid hash format or parameters.'); } } function showToast(msg) { const toast = document.getElementById('toast'); const toastMsg = document.getElementById('toast-message'); toastMsg.textContent = msg; toast.classList.add('show'); setTimeout(() => toast.classList.remove('show'), 2000); }