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Crypto & Security

Create passwords, inspect hashes and work with encryption and authentication formats.

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21 Tools

  1. AES Text Encryption & DecryptionEncrypt text locally with AES-256-GCM and password-based keys; export a portable encrypted message.Crypto & Security
  2. Bcrypt Generator & VerifierGenerate salted bcrypt password hashes and verify a password against an existing bcrypt hash, in your browser.Crypto & Security
  3. Caesar Cipher ToolEncrypt and decrypt text with a Caesar shift cipher.Crypto & Security
  4. DMARC Aggregate Report AnalyzerOpen DMARC XML, GZIP or ZIP reports and inspect source volume, alignment and policy dispositions without uploading mail data.Crypto & Security
  5. Email Header Routing & Authentication AnalyzerUnfold raw email headers, map Received hops, summarize reported SPF/DKIM/DMARC, flag identity differences and export a private routing report.Crypto & Security
  6. File Checksum CalculatorCalculate SHA-256, SHA-384, SHA-512 or SHA-1 checksums from a local file or text.Crypto & Security
  7. Hash Generator & CheckerCompute MD5/SHA hashes of text or a file and compare them against an expected hash to verify integrity.Crypto & Security
  8. HMAC GeneratorSign a message with a secret key — HMAC-SHA-1/256/384/512 signatures in hex and Base64, computed locally with Web Crypto.Crypto & Security
  9. JWT DecoderDecode a JSON Web Token to inspect its header, payload claims and expiry — without sending it anywhere.Crypto & Security
  10. JWT Generator & Signature VerifierSign HS256 JWTs and verify their signatures locally with explicit algorithm and time-claim checks.Crypto & Security
  11. MD5 Encrypt & DecryptHash text to MD5, or reverse-look-up common MD5 hashes back to their original value.Crypto & Security
  12. MD5 Hash GeneratorGenerate an MD5 message digest from any text.Crypto & Security
  13. Password Strength CheckerTest how strong a password is and estimate how long it would take to crack — privately in your browser.Crypto & Security
  14. RDAP & WHOIS Domain IntelligenceLook up current public domain registration data through RDAP, including lifecycle events, statuses, nameservers, DNSSEC and raw authoritative JSON.Crypto & Security
  15. RSA Key Pair GeneratorGenerate RSA public and private PEM keys locally with 2048, 3072 or 4096-bit key sizes.Crypto & Security
  16. Secure Passphrase GeneratorBuild local cryptographic passphrases from a large English or custom word list, then inspect entropy, strength and expected guess time.Crypto & Security
  17. SHA Hash GeneratorGenerate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from any text, computed securely in your browser.Crypto & Security
  18. Strong Password GeneratorGenerate secure random passwords using cryptographic randomness.Crypto & Security
  19. TLS Certificate InspectorOpen or paste X.509 certificates, inspect identity and validity, calculate SHA-256 and test a hostname against SAN or subject names entirely in your browser.Crypto & Security
  20. TOTP & HOTP Code GeneratorGenerate time-based or counter-based one-time codes with SHA-1, SHA-256 or SHA-512.Crypto & Security
  21. Vigenère & ROT47 Cipher StudioEncode and decode classical ciphers while preserving punctuation and letter case.Crypto & Security