Mobile Cryptography Benchmark

Mobile Phone: BenQ s680c (CLDC 1.0, MIDP 1.0)

Library: Bouncy Castle Lightweight API for J2ME (Version 1.29)

Plaintext size: 631 bytes

AES CBC mode with PKCS7 padding
plaintext blocks: 631 * 8 / 128 = 40 blocks

Unit: millisecond

Key Size	Encrypt	Decrypt	Key Generation
AES 128	421	314	97
	286	319	97
	296	310	97
AES 192	449	356	143
	319	346	144
	328	347	148
AES 256	495	384	138
	346	407	139
	352	388	134
	352	393	134

Comment: The first encryption is slightly slower, because there are

some classes which are first be instantiated by cipher at encryption

step, being loaded at that time.

SHA-256 & SHA-512

Unit: millisecond

Digital Signature

Unit: millisecond

Algorithm and Key Size	Sign	Verify	Key Generation
RSA 1024	142755	14389	Too slow to run. All take more than 10 minutes on emulator running on a AMD Athlon XP 2000+ machine. Maybe Bouncy Castle’s BigInteger has some problems. They are much faster with J2SE’s BigInteger.
	142117	13686
	142362	14111
DSA 1024	90410	188168
	92389	184935
RSA 2048	1080095	49136
	1069361	49968
ECDSA prime192v1	824896	1731073
	893203	1789403

Resources:

Jiayun