Umbrella: Update Wycheproof test vectors to v1

[Sajjon]

This issue is an umbrella issue where we can keep track of my efforts upgrading all Wycheproof test vectors from v0 to v1.

• [x] aes_gcm - #156
• [x] chacha20_polt1305 - #157
• [x] ecdh_secp256r1_test - #160
• [x] ecdh_secp256r1_ecpoint_test - #158
• [x] ecdh_secp384r1_test - #162
• [x] ecdh_secp384r1_ecpoint_test - #161
• [x] ecdh_secp521r1_test - #163
• [x] ecdh_secp521r1_ecpoint_test - #164
• [x] ecdsa_secp256r1_sha256_test open PR #166
• [x] ecdsa_secp256r1_sha512_test open PR #166
• [x] ecdsa_secp384r1_sha384_test open PR #166
• [x] ecdsa_secp384r1_sha512_test open PR #166
• [x] ecdsa_secp521r1_sha512_test open PR #166
• [x] eddsa_test (renamed -> ed25519_test) - #159
• [x] x25519_test - #155

[Sajjon]

@Lukasa aha! swift-crypto contains four Wycheproof test vectors which are not at all used:

• ecdh_test.json
• ecdh_webcrypto_test.json
• ecdsa_test.json
• ecdsa_webcrypto_test.json

So I propose we delete them, it is a bit misleading to have them there. And then I can add new tests ECDSA using IEEE P1316 encoding, using ECDSASignature.init:rawRepresentation initialiser for which Wycheproof v1 vendors:

• ecdsa_secp256r1_sha256_p1363_test.json
• ecdsa_secp256r1_sha512_p1363_test.json
• ecdsa_secp384r1_sha384_p1363_test.json
• ecdsa_secp384r1_sha512_p1363_test.json
• ecdsa_secp521r1_sha512_p1363_test.json

So I propose the four unused vectors gets deleted, and I add a new unit tests, and update ECDSASignatureTests to be shared for current tests and for the P1316 format tests, by accepting a function pointer to an ECDSASignature initializer, using init:derRepresentation for current tests, and using init:rawRepresentation init for the P1316 test vectors, what do you think about that @Lukasa ?

EDIT: done: https://github.com/apple/swift-crypto/pull/167

[Lukasa]

Hey @Sajjon, are there any further vectors you'd like to add as part of this ticket?

[Sajjon]

@Lukasa I think I'm done for now, I will close this issue.