PKCE (Proof Key for Code Exchange) is an OAuth 2.0 extension designed to enhance the security of public clients by preventing authorization code interception attacks. It achieves this by using a dynamically generated secret, called a code verifier, which is transformed into a code challenge and verified during the token exchange process.

PKCE (Proof Key For Code Exchange)

Proof Key for Code Exchange

OAuth 2.0 extension

authorization code interception attacks

dynamically generated secret

A code verifier is a cryptographic random string used in OAuth 2.0 authorization flows to enhance security by preventing authorization code interception attacks. It is part of the PKCE (Proof Key for Code Exchange) extension, which ensures that the authorization code can only be exchanged for a token by the client that initiated the request.

code verifier

A code challenge is a task or set of tasks designed to assess a programmer's coding skills, problem-solving abilities, and understanding of algorithms and data structures. These challenges are often used in hiring processes, coding competitions, and educational settings to evaluate and improve coding proficiency.

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