the owner keeps private key in asymmetric key cryptography.
who keeps private key in asymmetric key cryptography?
the owner
public-key cryptography









































public-key cryptography, or asymmetric cryptography, is a cryptographic system that uses pairs of keys: "public keys" which may be disseminated widely, and "private keys" which are known only to the owner. the generation of such keys depends on cryptographic algorithms based on mathematical problems to produce one-way functions. effective security only requires keeping the private key private; the public key can be openly distributed without compromising security.









































in such a system, any person can encrypt a message using the receiver's "public key", but that encrypted message can only be decrypted with the receiver's "private key".
public-key cryptography
public key cryptography is a common form of a forward anonymous system. it is used to pass encrypted messages, preventing any information about the message from being discovered if the message is intercepted by an attacker. it uses two keys, a public key and a private key. the public key is published, and is used by anyone to encrypt a plaintext message. the private key is not well known, and is used to decrypt cyphertext. public key cryptography is known as an asymmetric decryption algorithm because of different keys being used to perform opposing functions. public key cryptography is popular because, while it is computationally easy to create a pair of keys, it is extremely difficult to determine the private key knowing only the public key. therefore, the public key being well known does not allow messages which are intercepted to be decrypted. this is a forward anonymous system because one compromised key (the public key) does not compromise the anonymity of the system.
forward anonymity