Convert any text into a digital fingerprint using one-way hashing algorithms. Ideal for password security and data verification.
Hashing is the process of converting data of any size into a fixed-size string of characters using mathematical algorithms. This process is **one-way**, meaning you cannot revert the hash (e.g., MD5) back to the original text. It is commonly used to store passwords securely without saving plain text.
MD5 and SHA-1 used to be standards, but increased computing power has made them vulnerable to "Collision Attacks". Today, for critical data and passwords, algorithms like **SHA-256** or higher (Bcrypt, Argon2) are recommended. MD5 is now mostly used for file integrity checks (Checksums).
This is a common misconception. MD5 and SHA are "Hash" algorithms and are irreversible. **Base64** is an "Encoding" method. Text encoded in Base64 can easily be decoded back to its original form. Never use Base64 to store passwords.
In a good hash algorithm, changing just one letter in your input (e.g., "Apple" -> "apple") completely changes the resulting hash code. This is called the avalanche effect and prevents predictability.
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