rsa algorithm is a common public key cryptography algorithm. Common public key encryption algorithms include: RSA, ElGamal, knapsack algorithm, Rabin(RSA special case of RSA), public key encryption algorithm in Diffie-Herman key exchange protocol, EllipticCurveCryptography (ECC), DSA digital signature (also known as public key digital signature). The abstract information is encrypted with the sender's private key, and the receiver can decrypt the encrypted abstract information with the sender's public key, which is also a public key.