How asymmetric keys secure your digital identity and data
In short: This lesson breaks down the mechanics of public and private keys. It explains how these two distinct tools work together to ensure that your online communications remain both private and authentic.
Asymmetric encryption relies on a key pair: a public key for general use and a private key kept secret. These are utilized for two primary functions in cryptography—encryption and message signing.
Encryption is the mechanism used to provide confidentiality, ensuring only the intended recipient can read the data. In contrast, message signatures are used to provide integrity and authentication, verifying that a message was actually sent by the claimed source and has not been altered.
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Sources
- Summary by Intellect · source: Public and Private Keys - Signatures & Key Exchanges - Cryptography - Practical TLS
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