AI & the web
Cryptography
The study and practice of mathematical methods for protecting information and verifying it.
In everyday use
A service uses cryptographic signatures to check a software download.
What to keep in mind
Security also depends on how the methods and keys are handled.
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Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
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