feat: create a key exchange for ed25519 package mailchain#504 and sr2…

…5519 packange mailchain#505
developerfred · Jan 5, 2020 · 8057a13 · 8057a13
1 parent c452cc2
commit 8057a13
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diff --git a/crypto/ed25519/keyexchange.go b/crypto/ed25519/keyexchange.go
@@ -0,0 +1,13 @@
+package ed25519
+
+import (
+	"github.com/mailchain/mailchain/crypto"
+)
+
+type KeyExchange interface {
+	// EphemeralKey generates a private/public key pair.
+	EphemeralKey() (private crypto.PrivateKey, public crypto.PublicKey, err error)
+
+	// SharedSecret computes a secret value from ephemeralKey private key and recipientKey public key.
+	SharedSecret(ephemeralKey crypto.PrivateKey, recipientKey crypto.PublicKey) ([]byte, error)
+}
diff --git a/crypto/sr25519/keyexchange.go b/crypto/sr25519/keyexchange.go
@@ -0,0 +1,13 @@
+package sr25519
+
+import (
+	"github.com/mailchain/mailchain/crypto"
+)
+
+type KeyExchange interface {
+	// EphemeralKey generates a private/public key pair.
+	EphemeralKey() (private crypto.PrivateKey, public crypto.PublicKey, err error)
+
+	// SharedSecret computes a secret value from ephemeralKey private key and recipientKey public key.
+	SharedSecret(ephemeralKey crypto.PrivateKey, recipientKey crypto.PublicKey) ([]byte, error)
+}