PUBLIC KEY Meaning and
Definition
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Public key is a cryptographic term used to describe a system that employs a pair of unique keys to secure digital communication. In this system, the public key is a component of an asymmetric encryption algorithm (also known as public-key cryptography) that is used to encrypt messages or data. It provides a way for two parties to communicate securely over an untrusted network without needing to share a secret key beforehand.
The public key, as the name suggests, is openly distributed and accessible to anyone. It is used by the sender to perform encryption, converting the original message into an unreadable format. This encrypted message can only be decrypted by its corresponding private key, which is securely held by the intended recipient. The private key is never revealed to others and is protected by advanced security measures to prevent unauthorized access.
The use of public key cryptography ensures a secure channel for exchanging sensitive information, as even if someone intercepts the encrypted message, they would not be able to decrypt it without the private key. This technology is primarily used in various applications, including secure email communication, digital signatures, secure file transfers, online banking transactions, and secure access to websites.
In summary, a public key is an integral part of the asymmetric encryption system, serving as the method to encrypt messages or data. It is made openly available to encrypt information, while the corresponding private key is kept confidential to decrypt the encrypted content, ensuring secure and confidential communication in an untrusted environment.
Common Misspellings for PUBLIC KEY
- oublic key
- lublic key
- -ublic key
- 0ublic key
- pyblic key
- phblic key
- pjblic key
- piblic key
- p8blic key
- p7blic key
- puvlic key
- punlic key
- puhlic key
- puglic key
- pubkic key
- pubpic key
- puboic key
- publuc key
- publjc key
- publkc key
Etymology of PUBLIC KEY
The etymology of the word "public key" can be broken down as follows:
1. Public: The term "public" comes from the Latin word "publicus", which means "of the people" or "belonging to the state". It evolved through Old French and Middle English to its current form in Modern English. In the context of "public key", it refers to the concept of something being accessible or known by anyone or a group of individuals.
2. Key: The word "key" has its roots in the Old English word "cǣg" or "cēg", which refers to a metal instrument used to open or fasten locks. It has remained relatively unchanged in its meaning over the centuries. In the context of "public key", it refers to the cryptographic key used in asymmetric encryption systems, which includes both a public key and a private key.
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