Add support for curve ed25519

[matthiasgeihs]

This adds support for ed25519 curve.

[matthiasgeihs]

Need to bump version? @himanshuchawla009

[himanshuchawla009]

Need to bump version? @himanshuchawla009

i will bump it during release, it doesnt seems to have any breaking versions right, all apis and response types are backward compatible?

[matthiasgeihs]

Need to bump version? @himanshuchawla009

i will bump it during release, it doesnt seems to have any breaking versions right, all apis and response types are backward compatible?

Technically, there are some breaking changes:

1. The client now expects a keyType parameter upon initialization.
2. The client will now send a key_type parameter with every request to the server.

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(1.) could be made non-breaking by using secp256k1 as default if not keyType is provided.
(2.) may be breaking or may not be depending on how the server handles unknown parameters: does it throw? or just ignore?

[himanshuchawla009]

Need to bump version? @himanshuchawla009

i will bump it during release, it doesnt seems to have any breaking versions right, all apis and response types are backward compatible?

Technically, there are some breaking changes:

1. The client now expects a `keyType` parameter upon initialization.

2. The client will now send a `key_type` parameter with every request to the server.

(1.) could be made non-breaking by using secp256k1 as default if not keyType is provided. (2.) may be breaking or may not be depending on how the server handles unknown parameters: does it throw? or just ignore?

Just tested, server doesn't throws currently on passing unknown params.

[matthiasgeihs]

So does this PR look good? Or you want me to change anything? @himanshuchawla009

[matthiasgeihs]

@himanshuchawla009, have created alpha branch and targeted that one here. Please merge and publish when you are ready. Also, could you please set alpha branch as default?