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Requests changing the passphrase of a private key file instead of creating a new private key. -t Specifies the type of key to create (e.g., rsa). -o Use the new OpenSSH format. -q quiets ssh-keygen. It is used by the /etc/rc file while creating a new key. -N Provides a new Passphrase. -B Dumps the key's fingerprint in Bubble Babble format. -l
chown, the command used to change the owner of a file or directory on Unix-like systems; chgrp, the command used to change the group of a file or directory on Unix-like systems; cacls, a command used on Windows NT and its derivatives to modify the access control lists associated with a file or directory; attrib
These are separate from (but tightly integrated into) IRC. They are contacted with the /msg command (not case-sensitive): Example: typing /msg ChanServ INFO #wikipedia-en will send the INFO command to ChanServ, which will respond by giving the basic information it holds on the channel #wikipedia-en. A list of commands is at /msg SERVICE_NAME Help.
As the name suggests, CCM mode combines counter (CTR) mode for confidentiality with cipher block chaining message authentication code (CBC-MAC) for authentication. These two primitives are applied in an "authenticate-then-encrypt" manner: CBC-MAC is first computed on the message to obtain a message authentication code (MAC), then the message and the MAC are encrypted using counter mode.
In cryptography, CRAM-MD5 is a challenge–response authentication mechanism (CRAM) based on the HMAC-MD5 algorithm. As one of the mechanisms supported by the Simple Authentication and Security Layer (SASL), it is often used in email software as part of SMTP Authentication and for the authentication of POP and IMAP users, as well as in applications implementing LDAP, XMPP, BEEP, and other ...
Key /Config-authentication is used to solve the problem of authenticating the keys of a person (say "person A") that some other person ("person B") is talking to or trying to talk to. In other words, it is the process of assuring that the key of "person A", held by "person B", does in fact belong to "person A" and vice versa.
Alice sends a message encrypted with Bob's public key to Bob to show that Alice is a valid user. Bob verifies the message: Bob checks the format and timestamp. If either is incorrect or invalid, the session is aborted. The message is then decrypted with Bob's secret key, giving Alice's ID. Bob checks if the message matches a valid user.
In the second method, a secret key is also stored in the .Xauthority file. The client creates a string by concatenating the current time, a transport-dependent identifier, and the cookie, encrypts the resulting string, and sends it to the server. The xauth application is a utility for accessing the .Xauthority file.