sc-hsm: CKR_USER_NOT_LOGGED_IN in C_Sign immediately after C_GenerateKeyPair

[CardContact]

A C_Sign issued in the same session in which the private/public key pair is generated fails with CKR_USER_NOT_LOGGED_IN.

The issue is caused by a SELECT(AID) invoked before using the private key. The SELECT resets the authentication state. The SELECT(AID) is issued by the code, because the private key has an associated path, automatically set in the PKCS#15 layer for newly generated keys.

For keys already existing on the device, the path is not set during initialization, so that the additional SELECT(AID) is suppressed.