taigrr/arduinolibs
1
0
Fork 0
mirror of https://github.com/taigrr/arduinolibs synced 2025-01-18 04:33:12 -08:00
Code Issues Projects Releases Wiki Activity

AVR inline assembly version of Speck

Browse Source
This commit is contained in:
Rhys Weatherley
2015-12-05 14:13:11 +10:00
parent ee43158b64
commit 32d3d59cfb
2 changed files with 474 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
doc/crypto.dox
View File

@@ -47,6 +47,11 @@ constant-time, and much more secure. AES128, AES192, and AES256 are
provided for use in applications where compatibility with other systems
is desirable.
If code size is an issue for your application (for example on very low end
Arduino variants), then Speck on AVR is less than half the code size of
ChaCha, at the cost of more data memory for the state and longer key
setup times.
BLAKE2s and BLAKE2b are variations on the ChaCha stream cipher, designed for
hashing, with 256-bit and 512-bit hash outputs respectively. They are
intended as high performance replacements for SHA256 and SHA512 for when
@@ -71,9 +76,9 @@ Ardunino Mega 2560 running at 16 MHz are similar:
<tr><td>ChaCha (20 rounds)</td><td align="right">14.87us</td><td align="right">14.88us</td><td align="right">43.74us</td><td align="right">132</td></tr>
<tr><td>ChaCha (12 rounds)</td><td align="right">10.38us</td><td align="right">10.38us</td><td align="right">43.74us</td><td align="right">132</td></tr>
<tr><td>ChaCha (8 rounds)</td><td align="right">8.13us</td><td align="right">8.14us</td><td align="right">43.74us</td><td align="right">132</td></tr>
<tr><td>Speck (128-bit key)</td><td align="right">N.NNus</td><td align="right">N.NNus</td><td align="right">N.NNus</td><td align="right">275</td></tr>
<tr><td>Speck (192-bit key)</td><td align="right">N.NNus</td><td align="right">N.NNus</td><td align="right">N.NNus</td><td align="right">275</td></tr>
<tr><td>Speck (256-bit key)</td><td align="right">N.NNus</td><td align="right">N.NNus</td><td align="right">N.NNus</td><td align="right">275</td></tr>
<tr><td>Speck (128-bit key, ECB mode)</td><td align="right">10.72us</td><td align="right">11.09us</td><td align="right">304.56us</td><td align="right">275</td></tr>
<tr><td>Speck (192-bit key, ECB mode)</td><td align="right">11.03us</td><td align="right">11.42us</td><td align="right">316.32us</td><td align="right">275</td></tr>
<tr><td>Speck (256-bit key, ECB mode)</td><td align="right">11.35us</td><td align="right">11.74us</td><td align="right">328.33us</td><td align="right">275</td></tr>
<tr><td colspan="5"> </td></tr>
<tr><td>AEAD Algorithm</td><td align="right">Encryption (per byte)</td><td align="right">Decryption (per byte)</td><td>Key Setup</td><td>State Size (bytes)</td></tr>
<tr><td>ChaChaPoly</td><td align="right">41.23us</td><td align="right">41.23us</td><td align="right">902.55us</td><td align="right">255</td></tr>
@@ -122,6 +127,9 @@ All figures are for the Arduino Due running at 84 MHz:
<tr><td>ChaCha (20 rounds)</td><td align="right">0.87us</td><td align="right">0.88us</td><td align="right">4.96us</td><td align="right">136</td></tr>
<tr><td>ChaCha (12 rounds)</td><td align="right">0.70us</td><td align="right">0.71us</td><td align="right">4.96us</td><td align="right">136</td></tr>
<tr><td>ChaCha (8 rounds)</td><td align="right">0.62us</td><td align="right">0.62us</td><td align="right">4.96us</td><td align="right">136</td></tr>
<tr><td>Speck (128-bit key, ECB mode)</td><td align="right">0.88us</td><td align="right">1.17us</td><td align="right">37.54us</td><td align="right">288</td></tr>
<tr><td>Speck (192-bit key, ECB mode)</td><td align="right">0.90us</td><td align="right">1.20us</td><td align="right">38.92us</td><td align="right">288</td></tr>
<tr><td>Speck (256-bit key, ECB mode)</td><td align="right">0.93us</td><td align="right">1.23us</td><td align="right">40.10us</td><td align="right">288</td></tr>
<tr><td colspan="5"> </td></tr>
<tr><td>AEAD Algorithm</td><td align="right">Encryption (per byte)</td><td align="right">Decryption (per byte)</td><td>Key Setup</td><td>State Size (bytes)</td></tr>
<tr><td>ChaChaPoly</td><td align="right">1.66us</td><td align="right">1.66us</td><td align="right">45.02us</td><td align="right">280</td></tr>