Intel 7xx Servers User Manual

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8.3 Software Cryptographic API Performance 
This section provides performance information for System i systems using the following cryptographic
services; i5/OS Cryptographic Services API and IBM JCE 1.2.1, an extension of JDK 1.4.2.
Cryptographic performance is an important aspect of capacity planning, particularly for applications using
secure network communications. The information in this section may be used to assist in capacity
planning for this complex environment.
Measurement Results
The cryptographic performance measurements in the following three tables were made using i5/OS
Cryptographic Services API and Java Cryptography Extension.
Notes:
y
See section 8.2 for Test Environment Information
n/a
35
n/a
165
100
2048
10
RSA
n/a
246
n/a
1,187
100
1024
10
RSA
n/a
30
n/a
128
100
2048
1
RSA
n/a
197
n/a
897
100
1024
1
RSA
27,183,773
415
82,392,038
1,257
65536
256
10
AES
27,824,575
27,172
28,005,446
27,349
1024
256
10
AES
34,350,709
524
110,892,831
1,692
65536
128
10
AES
35,754,190
34,916
31,137,523
30,408
1024
128
10
AES
22,614,607
345
72,782,397
1,111
65536
256
1
AES
23,313,526
22,767
24,601,428
24,025
1024
256
1
AES
28,080,038
428
96,930,853
1,479
65536
128
1
AES
28,784,259
28,110
27,275,585
26,636
1024
128
1
AES
54,321,919
207
266,579,889
1,017
262144
128
10
RC4
32,704,635
125
248,224,207
947
262144
128
1
RC4
7,657,551
117
7,139,814
109
65536
112
10
Triple DES
7,697,917
7,517
6,783,658
6,625
1024
112
10
Triple DES
6,086,464
93
5,710,925
87
65536
112
1
Triple DES
6,140,893
5,997
5,159,756
5,039
1024
112
1
Triple DES
20,241,955
19,768
15,771,656
15,402
1024
56
10
DES
15,909,515
15,537
11,547,058
11,276
1024
56
1
DES
JCE     (Bytes/
Second)
JCE
(Transactions
/Second)
i5/OS   (Bytes/    
Second)
i5/OS 
(Transactions/
Second)
Transaction
Length
(Bytes)
Key Length
(Bits)
Threads
Encryption
Algorithm
 Cipher Encrypt Performance 
Table 8.1
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
©
 Copyright IBM Corp. 2008
Chapter 8 Cryptography Performance
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