NETWORK SECURITY
DIGITAL SIGNATURE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Padding in MD5 is done so that the length L of the message satisfies which formula?
|
|
L = 446 mod 512
|
|
|
L = 896 mod 1024
|
|
|
L = 324 mod 512
|
|
|
L = 128 mod 512
|
|
|
L = 448 mod 512
|
Explanation:
Detailed explanation-1: -In MD5’s case, your message must be n bits, where n= (512*z)+448 and z is any number. As an example, if you had a file that was 1472 bits long, then you would be able to use it as an MD5 hash, because 1472 modulo 512 = 448.
Detailed explanation-2: -After that, we append the 128 bit block of expressed in binary. Hence, the final padded message is: So, The number of padding bits is bits. Hence, Answer is 270 bits.
There is 1 question to complete.