## MD5, SHA1 Online Generator

## The **MD5** message-digest algorithm is a widely used cryptographic hash function that produces a 128-bit (16-byte) hash value.
**SHA-1** is the most widely used of the existing SHA hash functions, and is employed in several widely used applications and protocols.

**MD5** processes a variable-length message into a fixed-length output of 128 bits. The input message is broken up into chunks of 512-bit blocks (sixteen 32-bit words); the message is padded so that its length is divisible by 512.

**SHA-1** forms part of several widely used security applications and protocols, including TLS and SSL, PGP, SSH, S/MIME, and IPsec. Those applications can also use **MD5**; both **MD5** and **SHA-1** are descended from **MD4**. **SHA-1** hashing is also used in distributed revision control systems such as Git, Mercurial, and Monotone to identify revisions, and to detect data corruption or tampering.

## A **cryptographic hash function** is a **hash function**; that is, an algorithm that takes an arbitrary block of data and returns a fixed-size bit string, the (cryptographic) **hash** value, such that any (accidental or intentional) change to the data will (with very high probability) change the hash value. The data to be encoded are often called the "message," and the hash value is sometimes called the message digest or simply digest.

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### Hashed Text Generator

### Other Useful Tools

Cryptographic hash function — Cryptographic hash functions have many information security applications, notably in digital signatures, message authentication codes (MACs), and other forms of authentication.

Hash function — A hash function is any algorithm that maps data of variable length to data of a fixed length. The values returned by a hash function are called hash values, hash codes, hash sums, checksums or simply hashes.

function md5() — Calculates the MD5 hash of str using the - RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash.