# JH

> cryptographic hash function designed by Hongjun Wu

**Wikidata**: [Q4041729](https://www.wikidata.org/wiki/Q4041729)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/JH_(hash_function))  
**Source**: https://4ort.xyz/entity/jh

## Summary
JH is a cryptographic hash function designed by Hongjun Wu. It is a special class of hash function that has certain properties which make it suitable for use in cryptography. JH was one of the finalists in the NIST hash function competition.

## Key Facts
- JH is a cryptographic hash function designed by Hongjun Wu
- It was a finalist in the NIST hash function competition
- JH has a sitelink count of 3 across Wikipedia language editions
- The function is described in Wikipedia articles in German (de), English (en), and Russian (ru)
- JH has a freebase ID of /m/04zybm1
- It is classified as an instance of cryptographic hash function
- Microsoft Academic ID (discontinued) for JH is 173278457

### Q: What is JH?
A: JH is a cryptographic hash function designed by Hongjun Wu. It is a special class of hash function that has certain properties which make it suitable for use in cryptography.

### Q: What competition was JH involved in?
A: JH was one of the finalists in the NIST hash function competition, which was a public competition to develop new cryptographic hash functions.

### Q: In which languages is JH documented on Wikipedia?
A: JH is documented in Wikipedia articles in German (de), English (en), and Russian (ru).

## Why It Matters
JH matters because it represents an important contribution to the field of cryptography. As a finalist in the NIST hash function competition, it demonstrated strong cryptographic properties and design principles. Cryptographic hash functions like JH are fundamental building blocks in many security applications, including digital signatures, message authentication codes, and password storage. The development of JH by Hongjun Wu showcases the ongoing innovation in cryptographic research and the importance of creating secure, efficient hash functions to meet the evolving needs of digital security. While JH may not have been selected as the final standard, its participation in the competition and its continued documentation across multiple Wikipedia language editions indicate its significance in the cryptographic community.

## Notable For
- Being designed by Hongjun Wu, a notable figure in cryptography
- Finalist status in the prestigious NIST hash function competition
- Multi-language documentation across German, English, and Russian Wikipedia editions
- Classification as a cryptographic hash function with properties suitable for secure applications
- Having a dedicated freebase ID and Microsoft Academic ID, indicating its recognition in knowledge bases

## Body
### Design and Properties
JH is a cryptographic hash function that was designed to meet the stringent requirements of modern cryptography. As a hash function, it takes an input (or 'message') and returns a fixed-size string of bytes, which is typically a 'digest' that is unique to each unique input.

### NIST Competition
JH was submitted to the NIST hash function competition, a public competition run by the National Institute of Standards and Technology to develop new cryptographic hash functions. The competition aimed to create hash functions that could serve as alternatives to the aging SHA-1 and SHA-2 standards. JH's status as a finalist in this competition indicates that it met high standards of security and performance.

### Documentation and Recognition
The fact that JH is documented in Wikipedia articles across three different languages (German, English, and Russian) suggests that it has garnered international attention and recognition in the cryptographic community. This multi-language documentation also makes information about JH accessible to a wider audience of researchers and practitioners.

### Academic References
JH's inclusion in academic databases, as evidenced by its Microsoft Academic ID, indicates that it has been the subject of scholarly research and discussion. This academic attention is crucial for the development and validation of cryptographic techniques.

### Classification
As a cryptographic hash function, JH is classified as a special class of hash function that has certain properties which make it suitable for use in cryptography. These properties typically include pre-image resistance, second pre-image resistance, and collision resistance, which are essential for ensuring the security of cryptographic systems.