Definition ∞ A shared secret is a piece of data known only to two or more authorized parties, used to establish secure communication, verify identity, or derive cryptographic keys. In cryptography, this often serves as a key for symmetric encryption algorithms or for authentication protocols. It is a fundamental component for secure information exchange. The confidentiality of this secret is paramount for the security it underpins.
Context ∞ Shared secrets are fundamental to various cryptographic protocols that secure digital asset transactions and communications, particularly in off-chain scaling solutions or private blockchain networks. Their secure generation, distribution, and storage are critical to preventing unauthorized access and maintaining the confidentiality of sensitive information. News related to security breaches often highlights failures in protecting such shared secrets.
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