LM And MD5 Hash Security And Cracking

LM And MD5 Hash Security And Cracking

On this paper I will talk about Encryption and how to Crack encrypted hashes with out the decryption key. Let’s start with an evidence or the concept behind encryption. Encryption is used to safe or cover data from unauthorized personal and has been round from about 1800 BC and is not going away. There's at all times going to be a have to safe data and hold it out of unauthorized hands. Now with that mentioned there may be always going to be new methods to interrupt the encryption and with computers getting faster. Crackers will learn to break the encryption sooner than ever. We are going to take a look at two encryption algorithms for passwords LM & MD5.

LAN Man Hash (LM)

LAN Man Hash (LM) is a Microsoft Encryption Algorithm used to Encrypt Passwords for Windows NT, 95, ninety eight, ME 2000, XP, and 2003 Server. All though in the latest versions of home windows (XP, 2003, Vista) Microsoft has now switched to NTLM for many encryption but LM continues to be broadly used. LM is made by taking the customers password and changing it to all uppercase and them splitting the password into seven character halves. Every seven character half is converted to a sixteen bit hash and them each half’s are mixed to make a thirty- bit hash witch is the complete LM Hash.

LM Hash Example:

ED39C160E34521DCBF02B3DFE230653A = CERT276ROSENVA

ED39C160E34521DC BF02B3DFE230653A = CERT276 ROSENVA

1st 7 higher Encrypted 2nd 7 Upper encrypted pass

^ pass^

Message Digest Five (MD5)

MD5 hash is a 128-bit (16-byte) hash and are typically represented as 32-digit hexadecimal numbers. The MD5 (Message-Digest algorithm 5) was designed by Ronald Rivest in 1991 and was made to exchange old algorithms. Right now the MD5 hash is broadly used and for essentially the most part is secure. The perfect factor to remember is that with any password that you must make it advanced and long. The best passwords are 15 characters or longer containing each higher and lower case letter with numbers and other special characters too.

md5 decrypter free online Hash Example:

16d2c02aad8d116bc403f73454a5eeb1 = emocan

32-Digit Hash pass^

Cracking Password Hashes

Cracking password hashes may be easy when you have time and patience. What I imply by that is that with most simple cracking strategies you might be running the hash thought a dictionary and hoping the password is in the dictionary you are using. This may take time and you might be just shooting the hash right into a list. The other commonest cracking approach is to use Burteforce cracking. Burteforce cracking is the means of throwing all potential characters at the password until you find the match. That is probably the most time consuming method of cracking and might take years to crack a fancy password. The last method we are going to discus is Rainbow Crack. Rainbow Crack is a Hash cracking utility made by Zhu Shuanglei. Zhu’s Utility is based on Philippe Oechslin's faster time-memory trade-off technique. Rainbow Crack is a pre-compulated Burteforce assault and the attack information is stored in a knowledge base called a rainbow table. With Rainbow Tables it's potential to crack complex passwords one hundred’s or 1,000’s of time quick them with a standard Burteforce attack. The downside to rainbow tables is that it takes a number of time to make the tables sets. On the opposite side of this as soon as a table set is made it can be saved and reused as many time as you need. To make the tables you need rcrak.exe and it is reconvened to have a bunch or large number of computer systems available to make the tables. There are a lot of places online theses days selling table sets or memberships to used online tables submission services.