MD5 hash for « 956a93af41321432dae906c98a0ee897 6b30c24d586dd291f9a2213bcdec3530 973d333fe57dc0ca151cb6a6685bfcb0 766acee2b548bced59bed5ff9463fcaf 6e1ff57b44a5bfc77adbeb519a36d051 b930eb707fb3b5dc6467ab8216cf225c f059740773d90f68e3fe792667327f57 8d541cacb926c8cd4079edca »

What is a MD5 hash?

MD5 (Message Digest algorithm, 5th version) is an algorithm which converts a given sequence of characters into another unique sequence of characters, with a fixed length, called "hash". For instance, the MD5 hash of the word password is 5f4dcc3b5aa765d61d8327deb882cf99.

These hashes are mostly used to validate file integrity, to encrypt sensitive data (like passwords), and to generate unique identifiers.

Is it secure?

MD5 hashes are theoretically impossible to reverse directly, ie, it is not possible to retrieve the original string from a given hash using only mathematical operations.

Most web sites and applications store their user passwords into databases with MD5 encryption. This method appears to be safe as it seems impossible to retrieve original user passwords if, say, a hacker manages to have a look at the database content.

Unfortunately, there is a way to decrypt a MD5 hash, using a dictionary populated with strings and their MD5 counterpart. As most users use very simple passwords (like "123456", "password", "abc123", etc), MD5 dictionaries make them very easy to retrieve.

This website uses a MD5 reverse dictionary containing several millions of entries, which you can use with MD5 hashes from your application.

If some of the hashes you enter can be reversed, consider using another way of generating hashes, like using stronger algorithms (SHA-2, Whirlpool, etc), combining algorithms, and using a "salt".