Des is a block ciper which uses 56-bit-key for encryption and decryption. suppose the attacker adopts brute-force attacks or exhaustive key search to break the system. in other words, the attacker will try different key so as to find the right key. how many trials the attacker has to do on average to obtain the correct key?

lol me. hope this ! lol

i would first let him be aware that a cover letter is official and confidential and it requires a proper formatting so that the employer doesn't have hard time when going through it. he should write it in paragraphs of about two to four sentences and use proper grammar a , spelling and proper punctuation. i will also advice him not to be emotional and not also to use images.then base his attention to the details of the job described and not other things. that is he be specific to the responsibilities and to the employers requirements. on this he should make sure that the letter reflects how good he is for the requirements detailed by the employer

the letter should not be too long nor too short.

basic (beginner's all-purpose symbolic instruction code)[1] is a family of general-purpose, high-level programming languages whose design philosophy emphasizes ease of use.