String Hash Calculator
Calculate MD5, SHA series hash values for strings, supports multiple hash algorithms
Select hash algorithms and enter text to start calculation
What is Hash Algorithm?
Hash algorithms map data of any length to fixed-length hash values. Good hash algorithms have characteristics like determinism, fast computation, irreversibility, and collision resistance. Hash values are commonly used for data integrity verification and password storage.
Algorithm Security
MD5 and SHA-1 have been proven to have collision vulnerabilities and are not recommended for security scenarios. The SHA-2 series (SHA-224/256/384/512) are currently recommended secure hash algorithms, with SHA-256 being the most commonly used.
Application Scenarios
Hash algorithms are widely used in password storage, digital signatures, file verification, blockchain, data deduplication and other fields. Different scenarios have different requirements for security and performance, requiring appropriate algorithm selection.
Salt Values
In password storage, salt values should be used to enhance security. Salt is random data that is combined with passwords before hashing, effectively preventing rainbow table attacks and the problem of identical passwords producing identical hashes.