Hash & Encryption Tools
Hash and encryption reference and tools: digest algorithms like SHA-256 and MD5, message authentication with HMAC, password hashing with bcrypt and Argon2.
哈希与加密算法速查表 (Hash & Encryption) is a frequently consulted reference for developers. Keeping the reference and ready-to-use tools on one page cuts the cost of switching back and forth. All tools below run locally, are free, and need no sign-up.
Related Tools
- 🔐Hash GeneratorGenerate SHA-1/256/384/512 hashes from text with hex output, plus MD5 and RIPEMD-160. Switch between hex and Base64 output, then compare against a published.
- 🔏HMAC GeneratorCompute HMAC signatures with SHA-1/256/384/512 algorithms for API authentication and request signing. Perfect for webhook signatures and API auth flows.
- 🔒Bcrypt HashHash and verify passwords with bcrypt using custom salt rounds from 4 to 12. Industry-standard password hashing with an adjustable work factor. Cost adjustable.
- 💪Password Strength AnalyserEstimate password strength, entropy bits and crack time using zxcvbn analysis. Spot weak passwords before they reach production systems and user accounts.
- 🛡️Encrypt / Decrypt TextEncrypt and decrypt text with AES-GCM using a passphrase via the browser-native Web Crypto API. Keys use PBKDF2 and a fresh salt each run. Base64 output.
- 🗝️RSA Key Pair GeneratorGenerate RSA key pairs in PEM format via the Web Crypto API with 1024-4096 bit keys. Web Crypto native, exportable PEM keys for any stack or service you use.
- 🔐OTP / TOTP GeneratorGenerate TOTP codes (RFC 6238) from a base32 secret for 2FA and MFA authentication. Drop-in 2FA codes matching Google Authenticator and Authy or FreeOTP output.
- 🔑BIP39 PassphraseCreate 12/15/18/21/24-word BIP39 seed phrases for crypto wallets, compatible with Bitcoin, Ethereum and HD wallet standards and carrying a built-in checksum.
- 📑PDF Signature CheckerInspect digital signature metadata embedded in a PDF with X.509 certificates. Reads certificates issuer signing time and the signed byte range It does not.