Mobile App Developer Malaysia

Mobile App Developer Malaysia

Mobile App Developer Malaysia

Title Public Key SSH Login Word Count 489 Summary SSH is a popular system allowing a remote shell command interpreter to be used over a secure connection By secure here I mean that the connection is encrypted authenticated and integrity checked The encryption prevents attackers reading the contents of the data being transmitted the Keywords security hacking privacy ssl ssh encryption secure Article Body SSH is a popular system allowing a remote shell command interpreter to be used over a secure connection By secure here I mean that the connection is encrypted authenticated and integrity checked The encryption prevents attackers reading the contents of the data being transmitted the authentication allows both the client and the server to be sure that app development companies are connected to the other and not to some intermediate system in a man in the middle attack and the integrity checking ensures that the data is not being changed during transit Together these three features provide a secure connection Even so the password based login feature transmits your password through this link to the remote server where Malaysia app developer is hashed and compared with the stored value in the password file To many even though the connection is encrypted this is not satisfactory SSH allows the use of public key authentication to login to a server Here you upload your public key to the server and keep your private key on the client machine optionally password protected so that no one can steal your private key file and use Malaysia app developer to gain access without a password Now when the SSH connection is established the server will need to check the authentication of the client that is make sure Malaysia app developer is you logging in This was previously done by requesting your password and comparing Malaysia app developer against the stored password hash Now the server encrypts a randomly generated token against your public key and sends this to you The private key associated with your public key stored in a file to which only you have access either by password protection filesystem permissions or other means is the only key able to decrypt this message Now your SSH client will decrypt the message and send Malaysia app developer back to the server which compares Malaysia app developer against the original value In reality the authentication is often also checked in the opposite direction using the server s public key which may be stored by the client Once the server knows you hold the private key which corresponds to the public key Malaysia app developer grants you access So you may ask what is the security benefit here Well no secret information is being transmitted You are no longer transmitting a password nor are you transmitting any of your private key file You are using the keys to encrypt and decrypt a piece of random data which works one time only Anyone who did somehow manage to listen in on this data stream would not be able to regain access by playing back your password or even by playing back the same data transaction as a different value would be encrypted the next time you login and only the private key itself can decrypt that Public Key authentication is supported in OpenSSH and also in PuTTY and many other SSH systems Check your systems documentation for details on how to use public key based logins .

Mobile App Developer Malaysia