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MD5

Tool to decrypt/encrypt MD5 automatically. MD5 hash of a data is a footprint of 32 characters which can identify the initial data. Hash functions are used in computers and cryptography.

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MD5 -

Tag(s) : Modern Cryptography,Informatics

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# MD5

This script has been updated, please report any problems.

## MD5 Decoder

### Options

Also on dCode: SHA-1

## MD5 Encoder

Also on dCode: SHA-1

Tool to decrypt/encrypt MD5 automatically. MD5 hash of a data is a footprint of 32 characters which can identify the initial data. Hash functions are used in computers and cryptography.

### How to encrypt using MD5?

Encryption calculates form binary data a numeric footprint of 32 hexadecimal characters. The algorithm uses non linear function, here are the 4 main ones:

$$F(B,C,D) = (B\wedge{C}) \vee (\neg{B} \wedge{D})$$

$$G(B,C,D) = (B\wedge{D}) \vee (C \wedge \neg{D})$$

$$H(B,C,D) = B \oplus C \oplus D$$

$$I(B,C,D) = C \oplus (B \vee \neg{D})$$

dCode is crypted e9837d47b610ee29399831f917791a44 it is not the same hash for dcode (without uppercase) which gives a9d3d129549e80065aa8e109ec40a7c8.

### How to decrypt MD5 cipher?

As ciphering is based on non linear functions, there are no perfect deciphering methods.

The most common method, but also the worst, is to test all possible words in order to check if their footprint is the one looked for.

dCode uses its own databases (2 billions potential passwords) in order to accelerate the data processing (similar to rainbow tables).

### How to recognize MD5 ciphered text?

The hash is composed of 32 hexadecimal characters 0123456789abcdef.

### What are the variants of the MD5 cipher?

The database search can be complicated by inserting salt to the word (a prefix or a suffix, or both). Indeed, any change in the initial word lead to a big change in the footprint.

MD5(dCode) = e9837d47b610ee29399831f917791a44 but MD5(dCodeSUFFIX) = 523e9a807fc1d2766c3e3d8f132d4991

Another variant is the application of DOUBLE MD5, which consists in applying the hash algorithm twice.

MD5(dCode) = e9837d47b610ee29399831f917791a44 but MD5(MD5(dCode)) = c1127c7b6fdcafd97a96b37eaf035eaf

MD5 is not the only hash function, it also exists SHA1, SHA256, SHA512 etc.

### What does MD5 means?

MD5 stands for Message Digest 5

### When MD5 have been invented?

By Ronald Rivest in 1991