AVR-Crypto-Lib/en

Where can I find it?

SVN: [1]

via Track (also svn, but suitable for direct browsing):[2]

Short Facts

• small implementation of cryptographic algorithms in C (quite protable)
• even smaller implementations in assembly language (ATmega, gnu-avr-as)
• license: GPLv2 & GPLv3 (nearly everything)

About

Crypto-avr-lib is a set of implementations of different cryptographic primitives. Due to the special limitations of microcontrollers (very raw space, RAM and flash are ranging from a few bytes to a few KiB) reference or "normal" optimised implementations are not useable. Therefor we try to provide special implementations which respect the extrem limited resources of microcontroller applications.

What should be done

symmetric

block	aes	cast6	twofish	idea	kasumi
stream	seal	A5/1	Turing	Rabbit
hashes	ripemd	whirlpool

What we have

symmetric

block

• XTEA
• CAST5
• Camellia
• Skipjack
• Noekeon
• RC5
• RC6
• SEED
• DES
• TDES (aka EDE-DES, 3DES)
• SHABEA
• Serpent
• Present

stream

• ARCFOUR (RC4 kompatibel)
• Trivium
• Grain

hashes

• SHA-256
• SHA-1
• MD5

others

• HMAC-SHA256 (nach RFC 2104)
• PRNG

Facts

Blockciphers

name	variant	language	size (flash)	size (context)	size (stack)	keylength	blocksize	clocks (init)	clocks (encrypt)	clocks (decrypt)	attacks	paper	license / patents
Camellia	C	C		32		128	128
Camellia	C+Asm	C+Asm	5803
Cast5	C	C	14108	75		0-128	64	13739	12550	13109
RC5	RC5-32/r/b	C	1524	3+(8*#rounds+1)		1 – 2040	64	79352	7827	7223
RC6	RC6-32/r/b	C	2656	19+(8*#rounds)		1 – 2040	128	139940	26600	25986
Noekeon	C	C		0 (16)		128	128
Noekeon	Asm	Asm	870					10566	10340	10895
DES	C	C	2480	0		56	64
TDES	C	C	2480	0		168	64	0	852082	852107
Serpent	Non-bitslice	C		528		1 – 256	128
Serpent	bitslice	C	4498					102098	70827	70462
Skipjack	C	C	1244	0		80	64
Present	C	C	1514	256		80	64	30395	105796	151624
SEED	C	C		16		128	128
SEED	C+Asm	C+Asm	4052
XTEA	C	C		0		128	64
XTEA	Asm	Asm	504
Shabea	C	C	2020	0		0 – infinit	256