Change Details

Parent D490 Support for PowerPC's AES acceleration. This generates the S-Boxes on the fly, and thus is more resistant to side-channel attacks. I get an approximentally 2-3X speed-up with vcrypto support. However, I saw no benifits from additionally using assembly for the block mode code, so it is disabled for adding unnecessary complexity and code size. Fixes T4529

Parent D490 Support for PowerPC's AES acceleration. This generates the S-Boxes on the fly, and thus is more resistant to side-channel attacks. I get an approximentally 2-3X speed-up with vcrypto support. However, I saw no benifits from additionally using assembly for the block mode code, so it is disabled for adding unnecessary complexity and code size. Before: ECB/Stream CBC/Poly1305 CFB OFB CTR XTS CCM GCM OCB EAX --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- AES 6340ms 6850ms 4680ms 4930ms 4690ms 4530ms 7010ms 6420ms 4480ms 4500ms 4430ms 4920ms 9170ms 9190ms 8070ms 8660ms 4670ms 5290ms 9220ms 9210ms After: ECB/Stream CBC/Poly1305 CFB OFB CTR XTS CCM GCM OCB EAX --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- AES 2490ms 2590ms 2260ms 2230ms 2270ms 2250ms 2520ms 2530ms 2240ms 2280ms 2260ms 2270ms 5040ms 4490ms 5850ms 5870ms 2270ms 2260ms 4490ms 4500ms Fixes T4529

Parent D490 Support for PowerPC's AES acceleration. This generates the S-Boxes on the fly, and thus is more resistant to side-channel attacks. I get an approximentally 2-3X speed-up with vcrypto support. However, I saw no benifits from additionally using assembly for the block mode code, so it is disabled for adding unnecessary complexity and code size. Before: ECB/Stream CBC/Poly1305 CFB OFB CTR XTS CCM GCM OCB EAX --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- AES 6340ms 6850ms 4680ms 4930ms 4690ms 4530ms 7010ms 6420ms 4480ms 4500ms 4430ms 4920ms 9170ms 9190ms 8070ms 8660ms 4670ms 5290ms 9220ms 9210ms After: ECB/Stream CBC/Poly1305 CFB OFB CTR XTS CCM GCM OCB EAX --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- --------------- AES 2490ms 2590ms 2260ms 2230ms 2270ms 2250ms 2520ms 2530ms 2240ms 2280ms 2260ms 2270ms 5040ms 4490ms 5850ms 5870ms 2270ms 2260ms 4490ms 4500ms Fixes T4529