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Hash Tools 19
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MD5 Hash GeneratorCompute the MD5 digest of any string.SHA-1 Hash GeneratorCompute the SHA-1 digest of any string.SHA-384 Hash GeneratorCompute the SHA-384 digest of any string.SHA-512 Hash GeneratorCompute the SHA-512 digest of any string.HMAC GeneratorCreate keyed HMAC signatures with SHA-256/384/512.CRC32 ChecksumCalculate the CRC32 checksum of text or files.Adler-32 ChecksumCompute the fast Adler-32 checksum used by zlib.Hash Type IdentifierGuess which algorithm produced a hash from its length, encoding and character set.CRC-16 CalculatorCompute CRC-16 in six variants: CCITT-FALSE, XMODEM, KERMIT, MODBUS, X.25 and DNP.FNV-1a HashCompute the Fowler-Noll-Vo non-cryptographic hash in 32, 64 or 128 bits.MurmurHash3 CalculatorCompute MurmurHash3 x86_32 or x86_128 with a configurable seed.CRC-16/MODBUS CalculatorCompute the CRC-16/MODBUS checksum used by RS-485 and industrial PLC protocols.Argon2 Hash GeneratorHash passwords with Argon2id (or argon2i/argon2d) using the reference wasm implementation — OWASP-grade defaults, adjustable memory/iterations/parallelism, PHC-encoded output that is round-trip verified before it is shown, plus a built-in verifier.Ascon HashAscon-Hash256 produces a fixed 256-bit (32-byte) cryptographic hash as standardised in NIST SP 800-232. Ascon is a family of lightweight authenticated encryption and hashing algorithms designed for constrained devices such as IoT sensors anHAS-160HAS-160 is a cryptographic hash function designed for use with the Korean KCDSA digital signature algorithm. It is derived from SHA-1, with assorted changes intended to increase its security. It produces a 160-bit output. HAS-160 is used inMD4The MD4 (Message-Digest 4) algorithm is a cryptographic hash function developed by Ronald Rivest in 1990. The digest length is 128 bits. The algorithm has influenced later designs, such as the MD5, SHA-1 and RIPEMD algorithms. The security NT HashAn NT Hash, sometimes referred to as an NTLM hash, is a method of storing passwords on Windows systems. It works by running MD4 on UTF-16LE encoded input. NTLM hashes are considered weak because they can be brute-forced very easily with modSnefruSnefru is a cryptographic hash function invented by Ralph Merkle in 1990 while working at Xerox PARC. The function supports 128-bit and 256-bit output. It was named after the Egyptian Pharaoh Sneferu, continuing the tradition of the Khufu a
Cryptography Tools 26
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AES DecryptDecrypt AES-GCM/CBC payloads produced by the AES Encrypt tool.RSA Key Pair GeneratorGenerate 2048/4096-bit RSA keys and export them as JWK.XOR CipherEncrypt or decrypt bytes with a repeating XOR key.RC4 EncryptionClassic RC4 stream cipher — for study and legacy interop.Vigenere CipherPolyalphabetic keyword cipher, encrypt and decrypt.Affine Cipher EncodeThe Affine cipher is a type of monoalphabetic substitution cipher, wherein each letter in an alphabet is mapped to its numeric equivalent, encrypted using simple mathematical function, (ax + b) % 26 , and converted back to a letter.Bcryptbcrypt is a password hashing function designed by Niels Provos and David Mazières, based on the Blowfish cipher, and presented at USENIX in 1999. Besides incorporating a salt to protect against rainbow table attacks, bcrypt is an adaptive fBifid Cipher DecodeThe Bifid cipher is a cipher which uses a Polybius square in conjunction with transposition, which can be fairly difficult to decipher without knowing the alphabet keyword.Bifid Cipher EncodeThe Bifid cipher is a cipher which uses a Polybius square in conjunction with transposition, which can be fairly difficult to decipher without knowing the alphabet keyword.Cetacean Cipher DecodeDecode Cetacean Cipher input. e.g. EEEEEEEEEeeEeEEEEEEEEEEEEeeEeEEe becomes hiCetacean Cipher EncodeConverts any input into Cetacean Cipher. e.g. hi becomes EEEEEEEEEeeEeEEEEEEEEEEEEeeEeEEeCipherSaber2 DecryptCipherSaber is a simple symmetric encryption protocol based on the RC4 stream cipher. It gives reasonably strong protection of message confidentiality, yet it's designed to be simple enough that even novice programmers can memorize the algoCipherSaber2 EncryptCipherSaber is a simple symmetric encryption protocol based on the RC4 stream cipher. It gives reasonably strong protection of message confidentiality, yet it's designed to be simple enough that even novice programmers can memorize the algoDerive EVP keyThis operation performs a password-based key derivation function (PBKDF) used extensively in OpenSSL. In many applications of cryptography, user security is ultimately dependent on a password, and because a password usually can't be used diDerive HKDF keyA simple Hashed Message Authenticaton Code (HMAC)-based key derivation function (HKDF), defined in RFC5869.Derive PBKDF2 keyPBKDF2 is a password-based key derivation function. It is part of RSA Laboratories' Public-Key Cryptography Standards (PKCS) series, specifically PKCS #5 v2.0, also published as Internet Engineering Task Force's RFC 2898. In many applicatioEnigmaEncipher/decipher with the WW2 Enigma machine. Enigma was used by the German military, among others, around the WW2 era as a portable cipher machine to protect sensitive military, diplomatic and commercial communications. The standard set oGenerate De Bruijn SequenceGenerates rolling keycode combinations given a certain alphabet size and key length.Hex to PEMConverts a hexadecimal DER (Distinguished Encoding Rules) string into PEM (Privacy Enhanced Mail) format.MD2The MD2 (Message-Digest 2) algorithm is a cryptographic hash function developed by Ronald Rivest in 1989. The algorithm is optimized for 8-bit computers. Although MD2 is no longer considered secure, even as of 2014, it remains in use in pubRail Fence Cipher DecodeDecodes Strings that were created using the Rail fence Cipher provided a key and an offsetRail Fence Cipher EncodeEncodes Strings using the Rail fence Cipher provided a key and an offsetSIGABAEncipher/decipher with the WW2 SIGABA machine. SIGABA, otherwise known as ECM Mark II, was used by the United States for message encryption during WW2 up to the 1950s. It was developed in the 1930s by the US Army and Navy, and has up to thiTypexEncipher/decipher with the WW2 Typex machine. Typex was originally built by the British Royal Air Force prior to WW2, and is based on the Enigma machine with some improvements made, including using five rotors with more stepping points and WhirlpoolWhirlpool is a cryptographic hash function designed by Vincent Rijmen (co-creator of AES) and Paulo S. L. M. Barreto, who first described it in 2000. Several variants exist: Whirlpool-0 is the original version released in 2000. Whirlpool-T
Network Tools 7
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Domain RDAP / WHOIS LookupFetch registrar, status and expiry data via RDAP.HTTP Request Headers InspectorSee exactly which headers your client sends.Port Number LookupFind the service behind a port number, or the port behind a service name, with the IANA class.IP Address ExtractorPull every IPv4 address out of a log file, packet capture summary or config dump, deduplicated.URL ExtractorFind and list every http/https URL in unstructured text, one per line, deduplicated.Parse UDPParses a UDP header and payload (if present).
IP Tools 9
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IPv6 Address ExpanderExpand abbreviated IPv6 to the full 8-group form.IPv6 Address CompressorCompress IPv6 to its shortest RFC 5952 form.IP to Decimal ConverterConvert IPv4 addresses to 32-bit integers and back.Decimal to IP ConverterTurn a packed integer back into dotted-quad IPv4.MAC Address ValidatorValidate MAC formats and inspect unicast/multicast and admin bits.Defang IP AddressesTakes a IPv4 or IPv6 address and 'Defangs' it, meaning the IP becomes invalid, removing the risk of accidentally utilising it as an IP address.Format MAC addressesDisplays given MAC addresses in multiple different formats. Expects addresses in a list separated by newlines, spaces or commas. WARNING: There are no validity checks.IPv6 Transition AddressesConverts IPv4 addresses to their IPv6 Transition addresses. IPv6 Transition addresses can also be converted back into their original IPv4 address. MAC addresses can also be converted into the EUI-64 format, this can them be appended to your
URL Tools 4
Security Tools 15
Strong Password GeneratorCrypto-random passwords with full policy control.JWT DecoderInspect JWT header, payload and signature metadata.EXIF RemoverRemove EXIF, GPS location, camera info, IPTC and comments from JPG, PNG and WebP photos in one batch — every cleaned file is re-parsed in your browser to prove zero metadata remains, and your photos are never uploaded.JWT GeneratorSign and verify JSON Web Tokens entirely in your browser — HS256, HS384, HS512, RS256 and ES256 run on your own WebCrypto, fresh RSA-2048/EC P-256 pairs export as PKCS#8 and SPKI PEM, exp/iat come back as human dates, and the unsigned "none" algorithm is refused by design. Nothing is uploaded.
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Passphrase GeneratorDiceware-style memorable passphrases.Password Strength TesterEstimate entropy and crack-time of a password.API Key GeneratorRandom hex / Base64 secrets of any length.Basic Auth Header GeneratorBuild and decode Authorization: Basic headers.Checksum VerifierCompare a file hash against the published digest.Secret ScannerFind leaked API keys, tokens, private keys, JWTs and connection strings in config files, logs or code.PII RedactorMask emails, phone numbers, SSNs, card numbers, IPs, IBANs, MACs and JWTs in logs before sharing them.TOTP Code GeneratorGenerate RFC 6238 time-based one-time passwords from a Base32 secret, with the otpauth URI.JWT Signature VerifierDecode a JWT and verify its HS256 signature locally, with exp/nbf/iat claim checks.JWT SignerSeal a payload with RS256 (or HS256/HS384/HS512 and ES256) right in the browser: paste claims and a PKCS#8 private key — or generate an RSA/EC pair on the spot — then verify the result on the same page. "none" is never accepted, and your keys never leave this machine.To Bech32Bech32 is an encoding scheme primarily used for Bitcoin SegWit addresses (BIP-0173). It uses a 32-character alphabet that excludes easily confused characters (1, b, i, o) and includes a checksum for error detection. Bech32m (BIP-0350) is an