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Poly1305

Poly1305 is a universal hash family designed by Daniel J. Bernstein in 2002 for use in cryptography.

Article

14 sections

Contents

Description
Definition of Poly1305
Use as a one-time authenticator
Use in Poly1305-AES as a Carter–Wegman authenticator
Use in NaCl and ChaCha20-Poly1305
Security
Of one-time authenticator
Of NaCl and ChaCha20-Poly1305
Of Poly1305-AES
Speed
Implementations
See also
References
External links

Poly1305 is a universal hash family designed by Daniel J. Bernstein in 2002 for use in cryptography.

As with any universal hash family, Poly1305 can be used as a one-time message authentication code to authenticate a single message using a secret key shared between sender and recipient, similar to the way that a one-time pad can be used to conceal the content of a single message using a secret key shared between sender and recipient.