Speed Comparison of Public Key Algorithms » History » Version 3

Speed comparison of public key algorithms¶

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

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

DH group	Operations/s	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 reduced exponent size (libstrongswan.dh_exponent_ansi_x9_42 = no)

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