Constant-Time Execution is a property of code execution where the time taken to perform an operation is independent of the input data. This means the operation always takes the same amount of time, regardless of the specific values processed. In cryptographic contexts, constant-time execution is crucial for preventing timing-based side-channel attacks that could infer secret information.
Context
The implementation of constant-time execution is a critical security consideration for cryptographic algorithms and smart contracts handling sensitive data. Discussions often arise when performance optimizations might inadvertently introduce timing variations, posing a risk to the confidentiality of private keys or other critical parameters.
A novel compiler and security property enable cryptographic libraries to dynamically adapt protections against side-channel attacks, optimizing both security and performance for specific applications.
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