Cryptographic hash functions produce a fixed-size digest from arbitrary input data. They are one-way functions — you cannot reverse a hash to find the original input. Used for data integrity verification, digital signatures, password storage, and more.
Inputs
Tab: Choose the hashing operation mode.
Algorithm: The hash algorithm to use.
Input: The data to hash in HEX or ASCII format.
Expected Hash: For comparison mode — the expected hash value to compare against.
Tips
SHA-256 is the most widely used hash algorithm for security applications.
MD5 and SHA-1 are cryptographically broken — do not use for security purposes.
Multi-Hash mode is useful to quickly compare outputs across all algorithms.
File Hash can handle large files by reading them in chunks.
Standards: NIST FIPS 180-4 (SHA-2), NIST FIPS 202 (SHA-3), RFC 1321 (MD5)