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crocs-muni / JCAlgTest

Automated testing tool for algorithms from JavaCard API supported by particular smart card. Performance testing of almost all available methods. The results for more than 100+ cards.
http://jcalgtest.org
MIT License
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Incorrect key length used in KeyBuilder tests with TYPE_HMAC keys #259

Open nc-adnan opened 1 year ago

nc-adnan commented 1 year ago

According to the Java Card 3.0.5 API, the keyLength parameter passed to the KeyBuilder.buildKey method is the key size in bits.

In the KeyBuilder tests configs, the key sizes are specified in bytes for TYPE_HMAC keys (64/128) which leads to incorrect results:

see _JCAlgTest/AlgTestJClient/src/algtestjclient/SingleModeTest.java:

KEYBUILDER_TEST_CFGS.put("TYPE_HMAC_TRANSIENT_RESET#2.2.2", new KBTestCfg(JCConsts.KeyBuilder_TYPE_HMAC_TRANSIENT_RESET, (short) 64));
KEYBUILDER_TEST_CFGS.put("TYPE_HMAC_TRANSIENT_DESELECT#2.2.2", new KBTestCfg(JCConsts.KeyBuilder_TYPE_HMAC_TRANSIENT_DESELECT, (short) 64));
KEYBUILDER_TEST_CFGS.put("TYPE_HMAC LENGTH_HMAC_SHA_1_BLOCK_64#2.2.2", new KBTestCfg(JCConsts.KeyBuilder_TYPE_HMAC, (short) 64));
KEYBUILDER_TEST_CFGS.put("TYPE_HMAC LENGTH_HMAC_SHA_256_BLOCK_64#2.2.2", new KBTestCfg(JCConsts.KeyBuilder_TYPE_HMAC, (short) 64));
KEYBUILDER_TEST_CFGS.put("TYPE_HMAC LENGTH_HMAC_SHA_384_BLOCK_64#2.2.2", new KBTestCfg(JCConsts.KeyBuilder_TYPE_HMAC, (short) 128));
KEYBUILDER_TEST_CFGS.put("TYPE_HMAC LENGTH_HMAC_SHA_512_BLOCK_64#2.2.2", new KBTestCfg(JCConsts.KeyBuilder_TYPE_HMAC, (short) 128));
petrs commented 1 year ago

Thank you @nc-adnan for reporting, it will take longer to fix this issue due to need for re-measurement of existing results for these six values. So I'm leaving the issue open for now.