A little about MD5The MD5 Message-Digest Algorithm is a widely used cryptographic hash function with a 128-bit (16-byte) hash value. Specified in RFC 1321, MD5 has been employed in a wide variety of security applications, and is also commonly used to check data integrity. However, it has been shown that MD5 is not collision resistant; as such, MD5 is not suitable for applications like SSL certificates or digital signatures that rely on this property. An MD5 hash is typically expressed as a 32-digit hexadecimal number.
|MD5 hashes or plant text (One Per Line)
Local base only (fast mode)
About the ServiceService does not set any restrictions on the number of hashes that you can submit at one time. So, the only limit is perfomance of your systems and browser. In my case, 1000 hashes at a time works fine.
All what you needed - is paste all your hashes to the left side, press the Button and look for the right side. Also, you can paste plant text passwords to the left side and get crypted hashes at the right side.
And do not try recover salted hashes, this service useless in that case. It work only with clear MD5 hashes.
If your hash cannot be recovered, it will be stored at uncracked.txt and some time later will be applied attempt to crack it with rainbow tables or other services. Check hash again a few days later, maybe it will be available.
MD5 crack APIIf you want to crack more hashes, that your browser allow to paste into text field above or you want use our database to crack md5 hashes on your site you can use our API. All, what you have to do, is make HTTP GET or POST request to http://md5.darkbyte.ru/api.php using q parameter with MD5 hash or plain string, for example: to decode or to encode.
StatisticsPasswords in database
More about MD5MD5 was designed by Ron Rivest in 1991 to replace an earlier hash function, MD4. In 1996, a flaw was found with the design of MD5. While it was not a clearly fatal weakness, cryptographers began recommending the use of other algorithms, such as SHA-1 (which has since been found also to be vulnerable). In 2004, more serious flaws were discovered, making further use of the algorithm for security purposes questionable; specifically, a group of researchers described how to create a pair of files that share the same MD5 checksum. Further advances were made in breaking MD5 in 2005, 2006, and 2007. In an attack on MD5 published in December 2008, a group of researchers used this technique to fake SSL certificate validity. US-CERT says MD5 "should be considered cryptographically broken and unsuitable for further use," and most U.S. government applications now require the SHA-2 family of hash functions.
History and cryptanalysisMD5 is one in a series of message digest algorithms designed by Professor Ronald Rivest of MIT (Rivest, 1994). When analytic work indicated that MD5's predecessor MD4 was likely to be insecure, MD5 was designed in 1991 to be a secure replacement. (Weaknesses were indeed later found in MD4 by Hans Dobbertin.)
In 1993, Den Boer and Bosselaers gave an early, although limited, result of finding a "pseudo-collision" of the MD5 compression function; that is, two different initialization vectors which produce an identical digest.
In 1996, Dobbertin announced a collision of the compression function of MD5 (Dobbertin, 1996). While this was not an attack on the full MD5 hash function, it was close enough for cryptographers to recommend switching to a replacement, such as SHA-1 or RIPEMD-160.
The size of the hash—128 bits—is small enough to contemplate a birthday attack. MD5CRK was a distributed project started in March 2004 with the aim of demonstrating that MD5 is practically insecure by finding a collision using a birthday attack.
MD5CRK ended shortly after 17 August 2004, when collisions for the full MD5 were announced by Xiaoyun Wang, Dengguo Feng, Xuejia Lai, and Hongbo Yu. Their analytical attack was reported to take only one hour on an IBM p690 cluster.
On 1 March 2005, Arjen Lenstra, Xiaoyun Wang, and Benne de Weger demonstrated construction of two X.509 certificates with different public keys and the same MD5 hash, a demonstrably practical collision. The construction included private keys for both public keys. A few days later, Vlastimil Klima described an improved algorithm, able to construct MD5 collisions in a few hours on a single notebook computer. On 18 March 2006, Klima published an algorithm that can find a collision within one minute on a single notebook computer, using a method he calls tunneling.
In 2009, the United States Cyber Command used an MD5 hash of their mission statement as a part of their official emblem.
On December 24, 2010, Tao Xie and Dengguo Feng announced the first published single-block MD5 collision (two 64-byte messages with the same MD5 hash). Previous collision discoveries relied on multi-block attacks. For "security reasons", Xie and Feng did not disclose the new attack method. They have issued a challenge to the cryptographic community, offering a US$ 10,000 reward to the first finder of a different 64-byte collision before January 1, 2013. In 2011 an informational RFC was approved to update the security considerations in RFC 1321 (MD5) and RFC 2104 (HMAC-MD5).
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