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pkg/motor/spawn.go

@@ -0,0 +1,107 @@
+package motor
+
+import (
+	"github.com/cosmos/cosmos-sdk/types/bech32"
+	"github.com/onsonr/hway/crypto/kss"
+	"github.com/onsonr/hway/crypto/mpc"
+	fs "github.com/onsonr/hway/internal/vfs"
+)
+
+const kSonrHRP = "idx"
+
+// vfd is the struct implementation of an IPFS file system
+type drive struct {
+	kss    kss.Set
+	folder fs.Folder
+	addr   string
+}
+
+// NewVFS creates a new virtual file system.
+func Spawn() (*drive, error) {
+	kss, err := mpc.GenerateKss()
+	if err != nil {
+		return nil, err
+	}
+
+	addr, err := bech32.ConvertAndEncode(kSonrHRP, kss.PublicKey().Bytes())
+	if err != nil {
+		return nil, err
+	}
+
+	rootDir, err := fs.NewVaultFolder(addr)
+	if err != nil {
+		return nil, err
+	}
+
+	return &drive{
+		folder: rootDir,
+		addr:   addr,
+		kss:    kss,
+	}, nil
+}
+
+// // CreateFingerprint creates a fingerprint for the given database and public key
+// func CreateFingerprint(dir fs.Folder, db dwn.Database, publicKey crypto.PublicKey) error {
+// 	pk, err := secret.NewKey("credentials", publicKey)
+// 	if err != nil {
+// 		return err
+// 	}
+// 	creds, err := db.ListCredentials()
+// 	if err != nil {
+// 		return err
+// 	}
+
+// 	credIDStrs := make([]string, len(creds))
+// 	for i, c := range creds {
+// 		credIDStrs[i] = c.DID
+// 	}
+
+// 	acc, err := pk.CreateAccumulator(credIDStrs...)
+// 	if err != nil {
+// 		return err
+// 	}
+
+// 	bz, err := acc.MarshalBinary()
+// 	if err != nil {
+// 		return err
+// 	}
+// 	_, err = dir.WriteFile("fingerprint", bz, os.ModePerm)
+// 	if err != nil {
+// 		return err
+// 	}
+// 	return nil
+// }
+
+// // ValidateAndPurgeFingerprint validates the fingerprint and purges it if it's valid
+// func ValidateAndPurgeFingerprint(dir fs.Folder, witness []byte, publicKey crypto.PublicKey) (bool, error) {
+// 	pk, err := secret.NewKey("credentials", publicKey)
+// 	if err != nil {
+// 		return false, err
+// 	}
+// 	creds := new(accumulator.Accumulator)
+// 	membership := new(accumulator.MembershipWitness)
+// 	err = membership.UnmarshalBinary(witness)
+// 	if err != nil {
+// 		return false, err
+// 	}
+
+// 	bz, err := dir.ReadFile("fingerprint")
+// 	if err != nil {
+// 		return false, err
+// 	}
+
+// 	err = creds.UnmarshalBinary(bz)
+// 	if err != nil {
+// 		return false, err
+// 	}
+
+// 	if err := pk.VerifyWitness(creds, membership); err != nil {
+// 		return false, err
+// 	}
+
+// 	err = dir.DeleteFile("fingerprint")
+// 	if err != nil {
+// 		return false, err
+// 	}
+// 	return true, nil
+// }