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Speed Comparison of Public Key Algorithms » History » Version 6

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Andreas Steffen, 09.06.2009 14:24
sorted table according to operations

Speed comparison of public key algorithms

32bit, User-Mode-Linux on a Core2Duo T9400 (one core)

Key type Operations/s gmp gcrypt openssl
RSA 512 sign 3'791 1'831 2'105
RSA 768 sign 1'519 709 810
RSA 1024 sign 713 292 485
RSA 1536 sign 240 102 184
RSA 2048 sign 110 47 93
ECDSA 256 sign N/A N/A 522
ECDSA 384 sign N/A N/A 226
ECDSA 521 sign N/A N/A 109
RSA 512 verify 29'630 16'667 25'806
RSA 768 verify 18'182 10'714 15'385
RSA 1024 verify 11'765 6'897 11'111
RSA 1536 verify 5'882 3'774 5'882
RSA 2048 verify 3'571 2'326 3'704
ECDSA 256 verify N/A N/A 440
ECDSA 384 verify N/A N/A 180
ECDSA 521 verify N/A N/A 90
DH group Operations/s gmp gcrypt openssl gmp* gcrypt* openssl*
MODP 768 A=g^a mod p 368 243 212 741 531 319
MODP 1024 A=g^a mod p 196 125 136 494 388 272
MODP 1536 A=g^a mod p 68 45 62 308 220 196
MODP 2048 A=g^a mod p 31 21 28 149 98 116
ECP 192 A=g^a mod p N/A N/A 166 - - -
ECP 224 A=g^a mod p N/A N/A 157 - - -
ECP 256 A=g^a mod p N/A N/A 148 - - -
ECP 384 A=g^a mod p N/A N/A 91 - - -
ECP 521 A=g^a mod p N/A N/A 63 - - -
MODP 768 S=B^a mod p 448 190 290 1176 496 541
MODP 1024 S=B^a mod p 213 89 167 727 320 440
MODP 1536 S=B^a mod p 71 31 64 385 175 286
MODP 2048 S=B^a mod p 32 13 30 164 71 141
ECP 192 S=B^a mod p N/A N/A 171 - - -
ECP 224 S=B^a mod p N/A N/A 162 - - -
ECP 256 S=B^a mod p N/A N/A 152 - - -
ECP 384 S=B^a mod p N/A N/A 91 - - -
ECP 521 S=B^a mod p N/A N/A 65 - - -

64bit under VirtualBox, Core2Duo T9400 (one core):

Key type Operations/s gmp gcrypt openssl
RSA 512 sign 13'082 3'530 7'478
RSA 768 sign 5'523 1'603 3'154
RSA 1024 sign 2'742 766 1'577
RSA 1536 sign 937 285 555
RSA 2048 sign 433 133 258
ECDSA 256 sign N/A N/A 1'267
ECDSA 384 sign N/A N/A 577
ECDSA 521 sign N/A N/A 291
RSA 512 verify 103'733 36'197 5'9598
RSA 768 verify 61'520 25'411 35'704
RSA 1024 verify 41'377 16'098 26'314
RSA 1536 verify 22'148 10'941 13'607
RSA 2048 verify 13'500 6'524 8'345
ECDSA 256 verify N/A N/A 1'143
ECDSA 384 verify N/A N/A 508
ECDSA 512 verify N/A N/A 255
DH group Operations/s gmp gcrypt openssl gmp* gcrypt* openssl*
MODP 768 A=g^a mod p 1'853 790 1'088 5'622 2'151 2'656
MODP 1024 A=g^a mod p 862 347 491 3'523 1'352 1'689
MODP 1536 A=g^a mod p 269 135 168 1'612 776 837
MODP 2048 A=g^a mod p 117 55 73 689 298 362
ECP 192 A=g^a mod p N/A N/A 1'699 - - -
ECP 224 A=g^a mod p N/A N/A 1'494 - - -
ECP 256 A=g^a mod p N/A N/A 1'298 - - -
ECP 384 A=g^a mod p N/A N/A 591 - - -
ECP 521 A=g^a mod p N/A N/A 306 - - -
MODP 768 S=B^a mod p 1'882 595 1'191 5'737 1'779 3'280
MODP 1024 S=B^a mod p 869 274 535 3'431 1'035 1'928
MODP 1536 S=B^a mod p 278 98 174 1'648 571 900
MODP 2048 S=B^a mod p 122 38 74 660 214 380
ECP 192 S=B^a mod p N/A N/A 1'727 - - -
ECP 224 S=B^a mod p N/A N/A 1'589 - - -
ECP 256 S=B^a mod p N/A N/A 1'423 - - -
ECP 384 S=B^a mod p N/A N/A 609 - - -
ECP 521 S=B^a mod p N/A N/A 313 - - -

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