Distinguish different cases with the same OpenSSL error code

Distinguish different cases with the same OpenSSL error code

When importing a key with a wrong password and decrypting data with
wrong key/bcm or simply broken data OpenSSL can return exactly the
same error code (ERR_LIB_EVP, EVP_F_EVP_DECRYPTFINAL_EX,
EVP_R_BAD_DECRYPT). As we need to distinguish INVALID_PARAM and
INVALID_PASS in import_key, but decryption cannot return INVALID_PASS
handle this manually in the decryption.

Change-Id: Iba2b5fccfb1660c20b76a345bc799a0b145d700c