It fails for me:
The trouble is, the test is invalid. It imports a key using CRYPT_IPSEC_HMAC_KEY, which Wine currently ignores. rsaenh currently doesn't implement HMAC. The chromium tests, on which this test case was built, also checks the resulting output from using this key, and Wine currently fails these tests too (bug 20340.) So the Wine test case that's currently succeeding is misleading: you can import a key 16 bytes in length, but if you use it expecting to use HMAC, you'll get the wrong result.
I'll submit tests that show the appropriate key length, but I still think this part of the test should be reverted. --Juan