|Оценка пользователей:||(4,3 из 5)|
|Проверен Dr.Web:||Вирусов нет|
Try our Cisco IOS type 5 enable secret password cracker instead. What’s the moral of the story? Don’t use the old type 7 passwords anymore.
Use the new «secret» keyword only. Refer to the article «Cisco IOS Password Encryption Facts» for more information. Cisco network — hire us! Take the type 5 password, such as the text above in red, and paste it into the box below and click «Crack Password».
What’s the moral of the story? Don’t use stupidly simple passwords.
In cryptanalysis and computer security, password cracking is the process of recovering passwords from data that have been stored in or transmitted by a computer system. On a file-by-file basis, password cracking is utilized to gain access to digital evidence for which a judge has allowed access but the particular file’s access is restricted. Most methods of password cracking require the computer to produce many candidate passwords, each of which is checked.
Краткий анализ на «Cisco Password crack»
One example is brute-force cracking, in crack a computer tries every possible key or password until it succeeds. More common methods of password cracking, such as dictionary attacks, password checking, word cisco substitution, etc.
Higher password bit strength exponentially increases the number of candidate passwords that must be checked, on average, to recover the password and reduces the likelihood that the password will be found in any cracking dictionary. The ability to crack passwords using computer programs is also a function of the number of possible passwords per second which can be checked. If a hash of the target password is available to the attacker, this number can be quite large. If not, the rate depends on whether the authentication software limits how often a password can be tried, either by time delays, CAPTCHAs, or forced lockouts after some number of failed attempts.
Another situation where quick guessing is possible is when the password is used to form a cryptographic key. In such cases, an attacker can quickly check to see if a guessed password successfully decodes encrypted data. For some kinds of password hash, ordinary desktop computers can test over a hundred million passwords per second using password cracking tools running on a general purpose CPU and billions of passwords per second using GPU-based password cracking tools. See: John the Ripper benchmarks.
The rate of password guessing depends heavily on the cryptographic function used by the system to generate password hashes. A suitable password hashing function, such as bcrypt, is many orders of magnitude better than a naive function like simple MD5 or SHA. A user-selected eight-character password with numbers, mixed case, and symbols, with commonly selected passwords and other dictionary matches filtered out, reaches an estimated 30-bit strength, according to NIST. 230 is only one billion permutations and would be cracked in seconds if the hashing function is naive.
When ordinary desktop computers are combined in a cracking effort, as can be done with botnets, the capabilities of password cracking are considerably extended. 64-bit RC5 key in four years, in cisco Password crack effort which included over 300,000 different computers at various times, and which generated an average of over 12 billion keys per second. Graphics processors can speed up password cracking by a factor of 50 to 100 over general purpose computers.
As of 2011, available commercial products claim the ability to test up to 2,800,000,000 passwords a second on a standard desktop computer using a high-end graphics processor. Such a device can crack a 10 letter single-case password in one day. The work can be distributed over many computers for an additional speedup proportional to the number of available computers with comparable GPUs.
Despite their capabilities, desktop CPUs are slower at cracking passwords than purpose-built password breaking machines. ASICs, as opposed to general purpose CPUs. Their machine, Deep Crack, broke a DES 56-bit key in 56 hours, testing over 90 billion keys per second.
In 2010, the Georgia Tech Research Institute developed a method of using GPGPU to crack passwords, coming up with a minimum secure password length of 12 characters. A password that is easy to remember is generally also easy for an attacker to guess. Similarly, the more stringent requirements for password strength, e.
In «The Memorability and Security of Passwords», Jeff Yan et al. They found that passwords based on thinking of a phrase and taking the first letter of each word are just as memorable as naively selected passwords, and just as hard to crack as randomly generated passwords.
Combining two unrelated words is another good method. Having a personally designed «Algorithm» for generating obscure passwords is another good method. In the latest improvements, more and more people are noticing change in the way that passwords are secured.
1′, substitutions which are well known to attackers. Similarly typing the password one keyboard row higher is a common trick known to attackers. Research detailed in an April 2015 paper by several professors at Carnegie Mellon University shows that people’s choices of password structure often follow several known patterns. As a result, passwords may be much more easily cracked than their mathematical probabilities would otherwise indicate. Passwords containing one digit, for example, disproportionately include it at the end of the password.
On July 16, 1998, CERT reported an incident where an attacker had found 186,126 encrypted passwords. By the time they were discovered, they had already cracked 47,642 passwords. In December 2009, a major password breach of the Rockyou. Passwords were stored in cleartext in the database and were extracted through a SQL Injection vulnerability.
11,000 registered users of their e-bookshop. The leak, dubbed ‘Military Meltdown Monday,’ includes 90,000 logins of military personnel—including personnel from USCENTCOM, SOCOM, the Marine Corps, various Air Force facilities, Homeland Security, State Department staff, and what looks like private sector contractors.