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Extend package API with features usefule for existing apps #479

Merged
merged 4 commits into from
Aug 4, 2023
Merged

Extend package API with features usefule for existing apps #479

merged 4 commits into from
Aug 4, 2023

Commits on Aug 4, 2023

  1. crypto: Extend Signature type 

    Provide getters of signature scheme, public key and value. Make
`WriteToV2` method to decode public key from binary to assert scheme
format.

New API will allow to avoid `WriteToV2` calls in user space. New unit
test checks and shows client-to-server transport over NeoFS API V2
protocol.

Signed-off-by: Leonard Lyubich <leonard@morphbits.io>
    @cthulhu-rider
    cthulhu-rider committed Aug 4, 2023
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  2. crypto: Add helper to encode PublicKey 

    Encoding methods of `PublicKey` interface require buffer pre-allocation.
In cases where the user does not have a buffer prepared in advance, he
has to explicitly create it and encode the key. Helper function
`PublicKeyBytes` is added to make code easier.

Signed-off-by: Leonard Lyubich <leonard@morphbits.io>
    @cthulhu-rider
    cthulhu-rider committed Aug 4, 2023
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  3. user: Refactor constructors of Signer instances 

    Previously, package provided constructors for `Signer` instances with
RFC 6979 signature scheme only. User may need to construct any `Signer`
instance (other scheme or even custom implementation).

Add generic constructor `NewSigner` accepting split `neofscrypto.Signer`
and `user.ID`. Add two constructors from standard `ecdsa.PrivateKey`
with an explanation that the user ID is resolved automatically.

Signed-off-by: Leonard Lyubich <leonard@morphbits.io>
    @cthulhu-rider
    cthulhu-rider committed Aug 4, 2023
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  4. session: Add getter of binary-encoded public key from signature 

    Signature is used for user authentication so access to public key is
required. Digital signature bytes may still be unexported because they
are only useful for `VerifySignature` method.

Add `IssuerPublicKeyBytes` method returning binary-encoded public key of
the session issuer.

Signed-off-by: Leonard Lyubich <leonard@morphbits.io>
    @cthulhu-rider
    cthulhu-rider committed Aug 4, 2023
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