Now released the first version of the
AVRCryptoLib for the GNU C compiler.
It contains DES Triple DES and RSA Encrypt and Decrypt for both Keys in Ram or
Flash
Also AES, Skipjack, MD5 and SHA-1
Documentation and Source code is included and some test programs.
The interfacing to function is in C but all the main functions are in assembly language
for speed and size
The DES will do a decryption in 8.3ms @16Mc Mega Core.
And 512^3 RSA in 69ms @16mc on a Mega core 512^512 in 26 sec.
For 512^3 RSA you will need 4 * Keysize of ram and for 512^512 you will need 5
the Keysize.
This is the table of all the cycles
| DES | Cycles | Code size | Ram needed | |
| Encrypt | 133966 | 1782 bytes | 122+24 bytes | |
| Decrypt | 134134 | 1780 bytes | 122+24 bytes | |
| Combined | 2082 bytes | 122+24 bytes | ||
| Triple Des | Cycles | Code size | Ram needed | |
| Encrypt | 402568 | 1974 bytes | 122+32 bytes | |
| Decrypt | 402688 | 1974 bytes | 122+32 bytes | |
| Combined | 2390 bytes | 122+32 bytes | ||
| RSA 64 bits Key in Ram | Cycles | Code size | Ram needed | |
| Encrypt | 1051026 | 760 bytes | 5 * Keysize bytes | |
| Decrypt | 22946 | 690 bytes | 4 * Keysize bytes | |
| Conbined | 1040 bytes | 5 * Keysize bytes | ||
| RSA 64 Key in Flash | Cycles | Code size | Ram needed | |
| Encrypt | 1118827 | 746 bytes | 4 * Keysize bytes | |
| Decrypt | 24660 | 692 bytes | 3 * Keysize bytes | |
| Combined | - | 1028 bytes | 4 * Keysize bytes | |
| AES 128 SF | Cycles | Code size | Ram needed | |
| Init | 25389 | |||
| Encrypt | 7622 | 900 bytes | 768+16 bytes | |
| Decrypt | 8279 | 904 bytes | 768+16 bytes | |
| Combined | 1302 bytes | 768+16 bytes | ||
| AES 128 SR | Cycles | Code size | Ram needed | |
| Init | 5534 | |||
| Encrypt | 7762 | 966 bytes | 256+16 bytes | |
| Decrypt | 8411 | 1222 bytes | 256+16 bytes | |
| Combined | 1620 bytes | 256+16 bytes | ||
| SkipJack | Cycles | Code size | Ram needed | |
| Encrypt | 5777 | 526 bytes | 18 bytes | |
| Decrypt | 5727 | 520 bytes | 18 bytes | |
| Combined | - | 790 bytes | 18 bytes | |
| MD5 | Cycles | Code size | Ram needed | |
| Block 1KBytes | 339501 | 1842 bytes | 113 bytes | |
| SHA-1 | Cycles | Code size | Ram needed | |
| Block 1KBytes | 489890 | 1640 bytes | 120 bytes |