Hashing algorithms |

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A hashing algorithm takes a variable length data message and creates a fixed size message digest.

When a one-way hashing algorithm is used to generate the message digest the input cannot be determined from the output.

**Message digest.**

The output of a hashing algorithm.

**Message digest algorithm.**

(RFC 1320)
The message digest algorithm takes as input a message of
arbitrary length and produces as output a "fingerprint" or "message digest" of the input.
It is conjectured that it is computationally infeasible to produce two messages having the same message
digest, or to produce any message having a given pre-specified target message digest.

**One-Way Hashing algorithm.**

A mathematical function coded into an algorithm that takes a variable length string and generates a fixed length string or hash value.

**GOST R 34**

Hashing algorithm.

**[RFC 4357]**
Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms.

- Category: Informational.

**[RFC 4490]**
Using the GOST 28147-89, GOST R 34.11-94, GOST R 34.10-94, and GOST R 34.10-2001 Algorithms with Cryptographic Message Syntax (CMS).

- Category: Standards Track.

**[RFC 4491]**
Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile.

- Category: Standards Track.
- Updates:

RFC 3279.

**HMAC, Keyed-Hashing for Message Authentication.**

Hashing algorithm.

**MD2, Message-Digest Algorithm.**

Hashing algorithm.

**MD4, Message-Digest Algorithm.**

Hashing algorithm.

**MD5, Message-Digest Algorithm.**

Hashing algorithm.

**RIPEMD-128.**

Hashing algorithm.

**RIPEMD-160.**

Hashing algorithm.

**SHA, Secure Hash Algorithm.**

Hashing algorithm.

**UHASH, Universal Hash Function.**

Hashing algorithm.

**[RFC 4418]**UMAC: Message Authentication Code using Universal Hashing.

**RFCs:**

Compression algorithms | Character sets | Encryption algorithms |