Working end to end with in-memory data store.

internal/server/client/encryption.go

@@ -0,0 +1,17 @@
+package client
+
+import (
+	"crypto/ecdh"
+
+	"github.com/AYM1607/ccclip/pkg/api"
+	"github.com/AYM1607/ccclip/pkg/crypto"
+)
+
+func encryptForAll(plaintext string, pvk *ecdh.PrivateKey, devices []*api.Device) map[string][]byte {
+	res := map[string][]byte{}
+	for _, d := range devices {
+		key := crypto.NewSharedKey(pvk, crypto.PublicKeyFromBytes(d.PublicKey), crypto.SendDirection)
+		res[d.ID] = crypto.Encrypt(key, []byte(plaintext))
+	}
+	return res
+}