Information and translations of public key in the most comprehensive dictionary definitions resource on the web. The encrypted message is sent and the recipient uses his or her private key to decrypt it. The private key is known only to your computer , while the public key is given by your computer to any computer that wants to communicate securely with it. Meaning of public key certificate. What does public key certificate mean? Definition of public key in the Definitions.net dictionary. Unlike symmetric key algorithms that rely on one key to both encrypt and decrypt, each key performs a unique function. See private key for more details. Public Key Cryptography, also known as asymmetric cryptography, is a popular encryption method developed by Martin Hellman and Whitfield Diffie in 1976 that is used for securing the transmission of data over distrusted networks such as the Internet. The keys are asymmetric, the public key is actually derived from the private key. Public Key vs Private Key : Public Key: Private Key: Definition: A published key that can be used to send a secure message to a receiver. An encryption key that can be made public or sent by ordinary means such as an email message. A secret key that can be used to decrypt messages encrypted with the corresponding public or private key. Meaning of public key. Definition of Public Key Cryptography in the Network Encyclopedia. Sometimes referred to as asymmetric cryptography, public key cryptography is a class of cryptographic protocols based on algorithms.This method of cryptography requires two separate keys, one that is private or secret, and one that is public. Public key encryption is a type of cipher architecture known as public key cryptography that utilizes two keys, or a key pair, to encrypt and decrypt data. It can be used to encrypt while the private key can be used to decrypt. An encryption method that uses a two-part key: one private; the other public. The public key is used to ensure you are the owner of an address that can receive funds. Definition of public key certificate in the Definitions.net dictionary. Information and translations of public key certificate in the most comprehensive dictionary definitions resource on the web. One of the two keys is a public key, which anyone can use to encrypt a message for the owner of that key. A Definition of Public Key Cryptography. Also known as asymmetric-key encryption, public-key encryption uses two different keys at once -- a combination of a private key and a public key. The public key is also mathematically derived from your private key, but using reverse mathematics to derive the private key would take the world’s most powerful supercomputer many trillion years to crack. THIS DEFINITION IS FOR PERSONAL USE ONLY. Applies to : … public key certificate: A public key certificate is a digitally signed document that serves to validate the sender's authorization and name. 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