Add `EncodeUserMhash()` helper

.gitignore

@@ -1,2 +1,3 @@
 pigeon-cli
+*nutsdb*
 *scratchpad*

README.md

@@ -42,13 +42,13 @@ Don't use the Go version yet. If you want sommething stable, there is a [Ruby ve
 Without coverage:
 
 ```
-go test ./cmd
+go test -run pigeon
 ```
 
 With coverage:
 
 ```
-go test ./cmd -coverprofile cp.out
+go test -run pigeon -coverprofile cp.out
 ```
 
 # Build Project

main.go

@@ -1,7 +0,0 @@
-package main
-
-import "pigeon/cmd"
-
-func main() {
-	cmd.Execute()
-}

pigeon/constants.go

@@ -0,0 +1,17 @@
+package pigeon
+
+// BlobSigil is a string identifier that precedes a base32
+// hash (SHA256) representing arbitrary data.
+const BlobSigil = "FILE."
+
+// MessageSigil is a string identifier that precedes a base32
+// hash (SHA256) representing arbitrary data.
+const MessageSigil = "TEXT."
+
+// UserSigil is a string identifier that precedes a base32
+// representation of a particular user's ED25519 public key.
+const UserSigil = "USER."
+
+// StringSigil is a character used to identify strings as
+// defined by the pigeon protocol spec.
+const StringSigil = "\""

pigeon/cp.out

@@ -0,0 +1,27 @@
+mode: set
+pigeon/pigeon/b32.go:12.36,14.2 1 0
+pigeon/pigeon/b32.go:18.37,20.18 2 0
+pigeon/pigeon/b32.go:25.2,25.15 1 0
+pigeon/pigeon/b32.go:20.18,22.13 2 0
+pigeon/pigeon/db.go:10.28,16.16 4 1
+pigeon/pigeon/db.go:19.2,19.11 1 1
+pigeon/pigeon/db.go:16.16,18.3 1 0
+pigeon/pigeon/db.go:36.39,37.44 1 0
+pigeon/pigeon/db.go:37.44,39.18 2 0
+pigeon/pigeon/db.go:42.3,43.18 2 0
+pigeon/pigeon/db.go:46.3,46.13 1 0
+pigeon/pigeon/db.go:39.18,41.4 1 0
+pigeon/pigeon/db.go:43.18,45.4 1 0
+pigeon/pigeon/db.go:51.36,54.29 2 0
+pigeon/pigeon/db.go:62.2,62.15 1 0
+pigeon/pigeon/db.go:54.29,56.19 2 0
+pigeon/pigeon/db.go:59.4,60.14 2 0
+pigeon/pigeon/db.go:56.19,58.5 1 0
+pigeon/pigeon/util.go:15.62,17.16 2 0
+pigeon/pigeon/util.go:22.2,22.18 1 0
+pigeon/pigeon/util.go:17.16,20.3 2 0
+pigeon/pigeon/util.go:28.63,32.2 3 0
+pigeon/pigeon/util.go:35.27,37.2 1 0
+pigeon/pigeon/util.go:41.44,44.21 3 0
+pigeon/pigeon/util.go:49.2,49.44 1 0
+pigeon/pigeon/util.go:44.21,47.3 2 0

pigeon/db.go

@@ -11,7 +11,7 @@ func createDB() *nutsdb.DB {
 	// Open the database located in the /tmp/nutsdb directory.
 	// It will be created if it doesn't exist.
 	opt := nutsdb.DefaultOptions
-	opt.Dir = "./nutsdb"
+	opt.Dir = "./pigeondb"
 	db, err := nutsdb.Open(opt)
 	if err != nil {
 		log.Fatal(err)
@@ -47,7 +47,8 @@ func PutConfig(k ConfigKey, v []byte) {
 	})
 }
 
-func getConfig(k ConfigKey) []byte {
+// GetConfig retrieves aconfiguration key from NutsDB
+func GetConfig(k ConfigKey) []byte {
 	var output []byte
 	database.View(
 		func(tx *nutsdb.Tx) error {

pigeon/util.go

@@ -3,6 +3,7 @@ package pigeon
 import (
 	"crypto/ed25519"
 	"fmt"
+	"log"
 	"os"
 )
 
@@ -32,7 +33,19 @@ func CreateIdentity() (ed25519.PublicKey, ed25519.PrivateKey) {
 
 // GetIdentity retrieves the user's signing key
 func GetIdentity() []byte {
-	return getConfig(ConfigSecret)
+	return GetConfig(ConfigSecret)
 }
 
-func EncodeUserMhash() {}
+// EncodeUserMhash Takes a []byte and converts it to a B32
+// string in the format "USER.DATA.ED25519"
+func EncodeUserMhash(pubKey []byte) string {
+	b32 := B32Encode(pubKey)
+	b32Length := len(b32)
+
+	if b32Length != 52 {
+		m := "Expected %s to be 52 bytes long. Got %d"
+		log.Fatal(m, b32, b32Length)
+	}
+
+	return fmt.Sprintf("%s%s", UserSigil, b32)
+}