fix: serializing and deserializing keys

[st3iny]

Problem

Serializing a key will create produce a byte array. However, a string is expected when deserializing because of the try_from container attribute. This will cause the deserialization to never succeed.

Error message: invalid type: sequence, expected a borrowed string

Actual serialized data: public_key = [235, 184, 242, 187, 12, 37, 226, 203, 78, 98, 101, 18, 30, 55, 163, 254, 57, 26, 130, 22, 203, 42, 222, 28, 77, 164, 163, 52, 55, 176, 144, 120] (toml)

Solution

I fixed this by adding another attribute into="String" to the container. Unfortunately, setting into="&str" won't work because it is not owned.

I also added a simple unit test to prevent regressions.

[moubctez]

Fixed in #82