What is SHA3-384?
SHA3-384 is a cryptographic hash function from the SHA-3 (Secure Hash Algorithm 3) family, standardized by NIST in FIPS 202, that produces a 384-bit fixed-size digest output. Built on the Keccak algorithm using a sponge construction, SHA3-384 generates a unique 96-character hexadecimal fingerprint from any input, offering resistance to collision and preimage attacks. The free browser-based SHA3-384 Hash Generator tool runs entirely client-side without uploading data, making it a privacy-friendly solution for instantly computing secure hashes for strings and text.
How SHA3-384 works
SHA3-384 uses the Keccak sponge construction, which operates in two phases: absorption and squeezing. During the absorption phase, the input data is divided into blocks and padded to align with the rate (r = 832 bits for SHA3-384), then iteratively processed through the Keccak-f[1600] permutation function. The Keccak permutation applies five operations (theta, rho, pi, chi, iota) across 24 rounds on a 5-by-5-by-64 bit state array, using XOR, AND, NOT, and rotation operations. Once all input is absorbed, the squeezing phase extracts 384 bits from the state to produce the final hash.
How to use the tool: Enter any text or string in the input field. The tool instantly generates a 96-character hexadecimal SHA3-384 hash by running the algorithm in your browser. No data is sent to any server—the computation happens entirely on your device.
Example workflow: If you hash the text "Hello" using SHA3-384, the tool performs the following steps internally: (1) pads "Hello" with protocol-specific bits, (2) processes it through multiple rounds of the Keccak permutation, (3) extracts the 384-bit output, (4) converts it to hexadecimal format, and (5) displays the 96-character result. The exact same input will always produce the same hash output, but changing even one character completely changes the result.
How to use
- Type or paste your text into the input box.
- The SHA3-384 hash is calculated automatically as you type.
- Choose your output encoding (Hex or Base64) if needed.
- Click Copy to copy the digest to your clipboard.
Common uses
- Digital signatures and certificate generation: Hash documents before signing to verify authenticity and prevent tampering
- Data integrity verification: Generate checksums for files and data to ensure they have not been altered or corrupted during storage or transmission
- Secure password storage: Hash passwords in databases as a one-way function, making them irreversible and protecting user accounts from breach exposure
- Blockchain and cryptocurrency: Secure transactions and maintain tamper-proof ledgers in distributed systems
- Message authentication codes: Create MACs (Message Authentication Codes) for verifying the integrity and authenticity of messages in cryptographic protocols
- Compliance and security auditing: Meet regulatory requirements (FIPS 202 compliance) for cryptographic hashing in healthcare, finance, and sensitive data systems