Poly1305 is a fast, one-time authentication function created by Daniel J. Bernstein.
It is infeasible for an attacker to generate an authenticator for a message without the key.
However, a key must only be used for a single message. Authenticating two different messages
with the same key allows an attacker to forge authenticators for other messages with the same key.
Install in your GOPATH: go get -u github.com/aead/poly1305
All Go versions >= 1.7 are supported.
Hardware: Intel i7-6500U 2.50GHz x 2
System: Linux Ubuntu 16.04 - kernel: 4.4.0-62-generic
Go version: 1.8.0
AVX2
name speed cpb
Sum_64-4 1.60GB/s ± 0% 1.39
Sum_256-4 2.32GB/s ± 1% 1.00
Sum_1K-4 3.61GB/s ± 1% 0.65
Sum_8K-4 4.20GB/s ± 1% 0.55
Write_64-4 2.04GB/s ± 0% 1.14
Write_256-4 3.50GB/s ± 2% 0.67
Write_1K-4 4.08GB/s ± 2% 0.57
Write_8K-4 4.25GB/s ± 2% 0.55
x64
name speed cpb
Sum_64-4 1.60GB/s ± 1% 1.46
Sum_256-4 2.11GB/s ± 3% 1.10
Sum_1K-4 2.35GB/s ±13% 0.99
Sum_8K-4 2.47GB/s ±13% 0.94
Write_64-4 1.81GB/s ± 5% 1.29
Write_256-4 2.24GB/s ± 4% 1.04
Write_1K-4 2.55GB/s ± 0% 0.91
Write_8K-4 2.63GB/s ± 0% 0.88