Intel 170 Servers, AS/400 RISC Server Software Cryptographic API Performance, Measurement Results

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.

Table 8.1

Cipher Encrypt Performance

	Encryption	Threads	Key Length	Transaction	i5/OS	i5/OS (Bytes/	JCE	JCE (Bytes/
	Algorithm		(Bits)	Length	(Transactions/	Second)	(Transactions	Second)
				(Bytes)	Second)		/Second)
	DES	1	56	1024	11,276	11,547,058	15,537	15,909,515
	DES	10	56	1024	15,402	15,771,656	19,768	20,241,955
	Triple DES	1	112	1024	5,039	5,159,756	5,997	6,140,893
	Triple DES	1	112	65536	87	5,710,925	93	6,086,464
	Triple DES	10	112	1024	6,625	6,783,658	7,517	7,697,917
	Triple DES	10	112	65536	109	7,139,814	117	7,657,551
	RC4	1	128	262144	947	248,224,207	125	32,704,635
	RC4	10	128	262144	1,017	266,579,889	207	54,321,919
	AES	1	128	1024	26,636	27,275,585	28,110	28,784,259
	AES	1	128	65536	1,479	96,930,853	428	28,080,038
	AES	1	256	1024	24,025	24,601,428	22,767	23,313,526
	AES	1	256	65536	1,111	72,782,397	345	22,614,607
	AES	10	128	1024	30,408	31,137,523	34,916	35,754,190
	AES	10	128	65536	1,692	110,892,831	524	34,350,709
	AES	10	256	1024	27,349	28,005,446	27,172	27,824,575
	AES	10	256	65536	1,257	82,392,038	415	27,183,773
	RSA	1	1024	100	897	n/a	197	n/a
	RSA	1	2048	100	128	n/a	30	n/a
	RSA	10	1024	100	1,187	n/a	246	n/a
	RSA	10	2048	100	165	n/a	35	n/a
Notes:
y	See section 8.2 for Test Environment Information

IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
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