It is common in CSV files that the columns have uppercase names, so we
have adopted this scheme when we started using the card_key_provider.
This also means that the API of the card_key_provider_get() and
card_key_provider_get_field() function now implicitly requires
uppercase field names like 'ICCID', 'ADM1', etc.
Unfortunately this may be unreliable, so let's convert the field
names to uppercase as soon as we receive them. This makes the API
case-insensitive and gives us the assurance that all field names
we ever work with are in uppercase.
Related: SYS#7725
Change-Id: I9d80752587e2ccff0963c10abd5a2f42f5868d79
The CardKeyProviderCsv class implements a column decryption scheme
where columns are protected using a transport key. The CSV files
are enrcypted using contrib/csv-encrypt-columns.py.
The current implementation has two main problems:
- The decryption code in CardKeyProviderCsv is not specific to CSV files.
It could be re-used in other formats, for example to decrypt columns
(fields) red from a database. So let's split the decryption code in a
separate class.
- The encryption code in csv-encrypt-columns.py accesses methods and
properties in CardKeyProviderCsv. Also having the coresponding
encryption code somewhere out of tree may be confusing. Let's improve
the design and put encryption and decryption functions in a single
class. Let's also make sure the encryption/decryption is covered by
unittests.
Related: SYS#7725
Change-Id: I180457d4938f526d227c81020e4e03c6b3a57dab
There is no unit-test for the CardKeyProviderCsv class yet. Let's add
one to ensure that the CardKeyProviderCsv class keeps working as expected.
Related: SYS#7725
Change-Id: I52519847a4c4a13a7bca49985133872b01c4aaab
