TAILIEUCHUNG - Mã Hacking

TERMS OF USE: You are not authorized to access or query our Whois database through the use of electronic processes that are high-volume and automated except as reasonably necessary to register domain names or modify existing registrations; the Data in VeriSign Global Registry Services ("VeriSign") Whois database is provided by VeriSign for information purposes only, and to assist persons in obtaining information about or related to a domain name registration record. VeriSign does not guarantee its accuracy. By submitting a Whois query, you agree to abide by the following terms of use: You agree that you may use this Data only for lawful purposes and that under. | described, the server will now need to authenticate to the client. The server will therefore hash several string constants with the password hash and send a response to the client that can recalculate the literal values and challenges to derive an MD4 hash-hash of the password sent by the server. If successful, the server has proved to the client that it is legitimate. Several weak points in this protocol can be used to compromise the security by an attacker. The first is in the generation of the three DES keys since the challenge is sent in plain text. The effective combined key length is 16 bits. This can be deduced from the fact that five 0-byte values are appended to the third DES key. Jochen Eisinger has calculated that it would take roughly 16 hours (based on the reduction of a password space from the derived hash value) to brute force the password given the final hash, which would allow the 3 DES keys to be re-derived (and thus allow the message stream to be compromised). The analysis also goes on to suggest the use of certain tools and techniques to carry out the brute forcing in phased steps beginning with the generation of MD4 password hashes (attempting to match the original). Example use is provided by taking the challenge and response and feeding to the

• An ninh - Bảo mật
• You are not authorized to access
• or query our Whois database
• through the use of electronic
• processes that are high
• volume and automated
• except as reasonably
• necessary to register domai