kubo/crypto
Juan Batiz-Benet 5136c786e5 Bugfix: "Malformed Public Key" Error
This commit fixed the notoriously annoying "Malformed Public Key"
problem. The issue was that sometimes the byte representation of
the points (x,y in big.Int) generated would be one less byte than
expected. This is simply because (* big.Int) Write uses the least
amount of bytes needed for the int.

I instead changed the marshalling/unmarshalling to do exactly
what stdlib crypto/tls does: use `ellipctic.Marshal` which marshals
according to the ANSI X9.62 standard.

http://golang.org/pkg/crypto/elliptic/#Marshal
http://golang.org/src/pkg/crypto/tls/key_agreement.go#L214

```Go
// crypto/tls
ka.privateKey, x, y, err = elliptic.GenerateKey(ka.curve, config.rand())
ecdhePublic := elliptic.Marshal(ka.curve, x, y)

// ipfs/crypto
priv, x, y, err := elliptic.GenerateKey(curve, rand.Reader)
pubKey := elliptic.Marshal(curve, x, y)
```

((Warning: we're using `rand.Reader` directly, which we shouldn't
do, as it can be seeded. We should use a configured source, as
crypto/tls. Flagged in #143))

This makes me think we should re-use a lot of their datastructures
and functions directly (e.g. ecdheKeyAgreement)

Fixed: #135

cc @bren2010 @whyrusleeping
2014-10-05 15:56:52 -07:00
..
spipe Bugfix: "Malformed Public Key" Error 2014-10-05 15:56:52 -07:00
encode.pb.go vendor dependencies with godep 2014-09-09 22:39:42 -07:00
encode.proto create new crypto package and make rest of repo use it 2014-09-03 20:15:10 +00:00
key_test.go fixed key hashing interface + test 2014-10-01 00:52:26 -07:00
key.go Bugfix: "Malformed Public Key" Error 2014-10-05 15:56:52 -07:00
rsa.go fixed key hashing interface + test 2014-10-01 00:52:26 -07:00