Hash Generator

Both MD5 and SHA-1 have known collision vulnerabilities — attackers can craft two different inputs that produce the same hash. MD5 collisions can be generated in seconds. For security purposes (password storage, digital signatures), use SHA-256 or stronger algorithms.

No. Hash functions are one-way by design — you cannot mathematically reverse a hash to recover the original input. However, common passwords can be found using rainbow tables or brute force, which is why passwords should be hashed with salt (random data added before hashing).

Hashing is one-way: it produces a fixed-size digest and cannot be reversed. Encryption is two-way: data can be encrypted and then decrypted with a key. Use hashing for integrity verification and password storage; use encryption when you need to recover the original data.