Speed Comparison of Public Key Algorithms » History » Version 2

Speed comparison of public key algorithms¶

Tested in User-Mode-Linux, 32bit, on a Core2Duo T9400.

Key type	Operation	gmp	gcrypt	openssl
RSA 512	sign/s	3791	1831	2105
	verify/s	29630	16667	25806
RSA 768	sign/s	1519	709	810
	verify/s	18182	10714	15385
RSA 1024	sign/s	713	292	485
	verify/s	11765	6897	11111
RSA 1536	sign/s	240	102	184
	verify/s	5882	3774	5882
RSA 2048	sign/s	110	47	93
	verify/s	3571	2326	3704
ECDSA 256	sign/s	N/A	N/A	522
	verify/s	N/A	N/A	440
ECDSA 384	sign/s	N/A	N/A	226
	verify/s	N/A	N/A	180
ECDSA 521	sign/s	N/A	N/A	109
	verify/s	N/A	N/A	90

DH group	Operation	gmp	gcrypt	openssl	gmp*	gcrypt*	openssl*
MODP768	A=g^a mod p	368	243	212	741	531	319
	S=B^a mod p	448	190	290	1176	496	541
MODP1024	A=g^a mod p	196	125	136	494	388	272
	S=B^a mod p	213	89	167	727	320	440
MODP1536	A=g^a mod p	68	45	62	308	220	196
	S=B^a mod p	71	31	64	385	175	286
MODP2048	A=g^a mod p	31	21	28	149	98	116
	S=B^a mod p	32	13	30	164	71	141
ECP192	A=g^a mod p	N/A	N/A	166	N/A	N/A	N/A
	S=B^a mod p	N/A	N/A	171	N/A	N/A	N/A
ECP224	A=g^a mod p	N/A	N/A	157	N/A	N/A	N/A
	S=B^a mod p	N/A	N/A	162	N/A	N/A	N/A
ECP256	A=g^a mod p	N/A	N/A	148	N/A	N/A	N/A
	S=B^a mod p	N/A	N/A	152	N/A	N/A	N/A
ECP384	A=g^a mod p	N/A	N/A	91	N/A	N/A	N/A
	S=B^a mod p	N/A	N/A	91	N/A	N/A	N/A
ECP521	A=g^a mod p	N/A	N/A	63	N/A	N/A	N/A
	S=B^a mod p	N/A	N/A	65	N/A	N/A	N/A

* = using optimum exponent size (libstrongswan.dh_exponent_ansi_x9_42 = no)

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