ChaMd5.Org is an online hash lookup and decryption site for members, positioned around “MD5 online decryption” and “MD5 online cracking.” The site provides entries such as hash lookup, plaintext submission, bounty hunter, and batch submission.

## Supported algorithms

The site says it “provides md5 lookup services” for members and “supports most commonly used algorithms.” It currently lists support for md5, Discuz, WordPress, MySQL, nthash, SHA1, and other algorithms, including:

- MD5

- phpass (WordPress)

- SHA1 (40 bytes)

- MySQL323 (16 bytes)

- MySQL4.1/MySQL5+ (40 bytes)

- md5($pass.$salt)

- md5(md5($pass).$salt); Vbulletin; IceBB; dz

- md5($salt.$pass)

- NTLM (32 bytes NThash)

- md5crypt, MD5(Unix), FreeBSD MD5

- descrypt, DES(Unix)

- md5(md5($pass)) Double MD5

- md5(md5(md5($pass)))

- Other salted MD5 variants listed on the site

## Usage and notices

ChaMd5.Org states that computing volume and computing time are continuously increasing, and welcomes testing. It also provides “hash format usage help.”

The site states: all functions and data are only for cryptographic research and information security assessment, and are strictly prohibited for any illegal use; the site assumes no responsibility for violations.

## Deployment and contact

The provided materials do not show an open-source or self-hosted deployment option, nor do they provide server, GPU/CPU, dictionary, or similar resource requirements. The main usage model shown is the official online service.

For China-based users, the site displays ICP filing information, a QQ group, and an email contact: admin#ChaMd5.Org. © 2016 ChaMd5.Org All Rights Reserved.