Security & Cryptography Utilities
A secure collection of client-side developer tools for managing security & cryptography requests.
Hash Generator
Compute MD5, SHA-1, SHA-256, and SHA-512 cryptographic checksums in-browser.
HMAC Generator
Generate Keyed-Hash Message Authentication Codes (HMAC) client-side for secure API authentication.
JWT Decoder & Inspector
Decode JSON Web Tokens, parse payloads, and inspect cryptographic signatures client-side.
Cryptographically Secure Secret Key Generator | ToolZeno
Generate cryptographically secure secret keys, API tokens, JWT secrets, AES-256 keys, and HMAC signatures 100% client-side using Web Crypto API.
Password Strength Checker
Analyze password complexity, calculate entropy bits, detect repeating or sequential patterns, and estimate brute-force cracking times.
Password Policy Generator
Build, evaluate, and export strong password policies for enterprise applications, SaaS, and databases aligned with NIST SP 800-63B.
PEM Viewer & Online X.509 Certificate Decoder | ToolZeno
Inspect and decode PEM-encoded files (X.509 Certificates, Certificate Chains, CSRs, RSA/EC Private Keys, Public Keys) 100% locally in your browser.
CSR Decoder & Certificate Signing Request Inspector | ToolZeno
Decode and inspect Certificate Signing Requests (CSR / PKCS#10) 100% locally in your browser. Inspect subject RDNs, SANs, public keys, extensions, signature specs, and SHA-256 fingerprints with zero server communication.
SSH Key Pair Viewer & Fingerprint Inspector | ToolZeno
Inspect, decode, and analyze SSH public and private keys (Ed25519, RSA, ECDSA, DSA) 100% locally in your browser. Calculate fingerprints and security ratings with zero server communication.