RSA cryptography is based on which principle?

RSA cryptography is based on which principle?

• A. Asymmetric cryptography based on factoring large integers
• B. Symmetric key cryptography
• C. Hash-based cryptography
• D. Quantum key distribution

Answer: (A)

RSA cryptography is based on the difficulty of factoring large integers. In RSA, the public key includes a modulus n that is the product of two large primes. While n can be shared openly, factoring n to recover the primes is computationally hard, and knowing those primes allows you to derive the private key. This asymmetry—easy to generate the public key, hard to derive the private key without factoring—provides the security. The other approaches describe different cryptographic ideas: symmetric-key cryptography uses the same secret key for encryption and decryption, hash-based cryptography relies on properties of hash functions, and quantum key distribution uses quantum phenomena for key exchange. So the principle RSA relies on is the hardness of factoring large integers.

RSA cryptography is based on the difficulty of factoring large integers. In RSA, the public key includes a modulus n that is the product of two large primes. While n can be shared openly, factoring n to recover the primes is computationally hard, and knowing those primes allows you to derive the private key. This asymmetry—easy to generate the public key, hard to derive the private key without factoring—provides the security. The other approaches describe different cryptographic ideas: symmetric-key cryptography uses the same secret key for encryption and decryption, hash-based cryptography relies on properties of hash functions, and quantum key distribution uses quantum phenomena for key exchange. So the principle RSA relies on is the hardness of factoring large integers.