एसिमेट्रिक एन्क्रिप्शन (Asymmetric encryption) मुख्य रूप से निम्नलिखित में से किस उद्देश्य के लिए उपयुक्त नहीं है?

In the RSA cryptosystem, for prime numbers P = 17, Q = 11 and public key exponent e = 7, what is the value of the private key exponent d?

In a community of 'n' people, how many shared secrets (keys) are needed for pairwise symmetric-key cryptography?