decrypt the message (2161,660), (2161,1284), (2161,1467) encrypted using the elgamal cryptosystem with public key (2713,5,193) corresponding to the private key 17.
You probably understand RSA, DES, AES, & ELGAMAL, so I'm wondering the purpose of the question.
With such a short message you could work this out without a calculator (somewhat tedious, but do able).
...wait a moment...!
You are looking for someone to explain elgamal...
I have a cryptosystem ( supposely RSA ), such that :
I wanted to know how i am suppose to compute phi(n) and the private key.
It's the first time that i encounter such a cryptosystem, usually p and q are relatively primes. Please help me, it's for an important assignment of mine ...