The aez's intro from mixmasala

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This project forked from yawning/aez

Mirror of my Go AEZ implementation.

License: Creative Commons Zero v1.0 Universal

Go 51.93% Python 33.38% Assembly 14.69%

aez's Introduction

aez - AEZ (Duh)

Yawning Angel (yawning at schwanenlied dot me)

This is an implementation of AEZ, primarily based on the reference code. It appears to be correct and the output matches test vectors.

Features:

Constant time, always.
Will use AES-NI if available on AMD64.
Unlike the aesni code, supports a vector of AD, nbytes > 16, and tau > 16.

Benchmarks:

Version	Message Size	ns/op	MB/s
aesni	1	2430	0.41
	32	2161	14.80
	512	2491	205.51
	1024	2608	392.52
	2048	2922	700.74
	4096	3669	1116.12
	8192	5096	1607.43
	16384	7892	2075.93
	32768	13214	2479.65
	65536	24416	2684.11
	1024768	381778	2684.20

ct64 (no-asm)	1	7185	0.14
	32	9081	3.52
	512	26117	19.60
	1024	40259	25.43
	2048	67867	30.18
	4096	124411	32.92
	8192	241456	33.93
	16394	462033	35.46
	32768	914127	35.85
	65536	1804397	36.32
	1024768	27380841	37.43

ct32 (no-asm)	1	6482	0.15
	32	8673	3.69
	512	26926	19.01
	1024	45842	22.34
	2048	83350	24.57
	4096	159436	25.69
	8192	322488	25.40
	16394	618034	26.51
	32768	1200462	27.30
	65536	2366829	27.69
	1024768	37128937	27.60

All numbers taken on an Intel i7-5600U with Turbo Boost disabled, running on linux/amd64. A 16 byte authenticator (tau) and no AD was used for each test. Even on systems without AES-NI certain operations are done using SSE2 (eg: XORs), but for the purposes of benchmarking this was disabled for the ct64/ct32 tests.

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