# Hash Generator
Generate MD5, SHA1, SHA256, and SHA512 hashes from any text.
How to Use
- Enter or paste your text in the input field
- Select which hash algorithms to use
- Click "Generate Hashes"
- Click the copy button next to any hash to copy it
FAQ
What is a hash?
A hash is a fixed-size string of characters generated from input data of any size using a mathematical algorithm. The same input always produces the same hash, but the original data cannot be recovered from the hash. Hashes are used for data integrity verification, password storage, and digital signatures.
Is MD5 secure?
MD5 is no longer considered cryptographically secure. It has known vulnerabilities that allow hash collisions (two different inputs producing the same hash). For security-sensitive applications, use SHA256 or SHA512 instead. MD5 is still fine for checksums and non-security purposes.
Sự khác biệt giữa SHA-256 và SHA-512 là gì?
SHA-256 tạo ra hash 256-bit (64 ký tự hex) trong khi SHA-512 tạo ra hash 512-bit (128 ký tự hex). SHA-512 thường nhanh hơn trên hệ thống 64-bit và cung cấp mức bảo mật cao hơn. Cả hai đều an toàn cho mục đích bảo mật, nhưng SHA-256 phổ biến hơn trong blockchain và các ứng dụng web.