Moved the encryption to its own package

Author: schollz

encrypt/encrypt.go

@@ -0,0 +1,28 @@
+package encrypt
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+
+	"github.com/schollz/cryptopasta"
+)
+
+func EncryptString(toEncrypt string, password string) (string, error) {
+	key := sha256.Sum256([]byte(password))
+	encrypted, err := cryptopasta.Encrypt([]byte(toEncrypt), &key)
+	if err != nil {
+		return "", err
+	}
+
+	return hex.EncodeToString(encrypted), nil
+}
+
+func DecryptString(toDecrypt string, password string) (string, error) {
+	key := sha256.Sum256([]byte(password))
+	contentData, err := hex.DecodeString(toDecrypt)
+	if err != nil {
+		return "", err
+	}
+	bDecrypted, err := cryptopasta.Decrypt(contentData, &key)
+	return string(bDecrypted), err
+}

encrypt/encrypt_test.go

@@ -0,0 +1,22 @@
+package encrypt
+
+import "testing"
+
+func TestEncryption(t *testing.T) {
+	s, err := EncryptString("some string", "some password")
+	if err != nil {
+		t.Errorf("What")
+	}
+	d, err := DecryptString(s, "some wrong password")
+	if err == nil {
+		t.Errorf("Should throw error for bad password")
+	}
+	d, err = DecryptString(s, "some password")
+	if err != nil {
+		t.Errorf("Should not throw password")
+	}
+	if d != "some string" {
+		t.Errorf("Problem decoding")
+	}
+
+}

handlers.go

@@ -10,6 +10,7 @@ import (
 	// "github.com/gin-contrib/static"
 	"github.com/gin-contrib/multitemplate"
 	"github.com/gin-gonic/gin"
+	"github.com/schollz/cowyo/encrypt"
 )
 
 func serve(host, port, crt_path, key_path string, TLS bool) {
@@ -328,7 +329,7 @@ func handleEncrypt(c *gin.Context) {
 	q := Open(json.Page)
 	var message string
 	if p.IsEncrypted {
-		decrypted, err2 := DecryptString(p.Text.GetCurrent(), json.Passphrase)
+		decrypted, err2 := encrypt.DecryptString(p.Text.GetCurrent(), json.Passphrase)
 		if err2 != nil {
 			c.JSON(http.StatusOK, gin.H{"success": false, "message": "Wrong password"})
 			return
@@ -342,7 +343,7 @@ func handleEncrypt(c *gin.Context) {
 		message = "Decrypted"
 	} else {
 		currentText := p.Text.GetCurrent()
-		encrypted, _ := EncryptString(currentText, json.Passphrase)
+		encrypted, _ := encrypt.EncryptString(currentText, json.Passphrase)
 		q.Erase()
 		q = Open(json.Page)
 		q.Update(encrypted)

page_test.go

@@ -17,7 +17,7 @@ func TestListFiles(t *testing.T) {
 	p.Update("A different bunch of data")
 	p = Open("testpage3")
 	p.Update("Not much else")
-	n, l := DirectoryList()
+	n, l, _, _ := DirectoryList()
 	if strings.Join(n, " ") != "testpage testpage2 testpage3" {
 		t.Errorf("Names: %s, Lengths: %d", n, l)
 	}

utils.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"crypto/sha256"
 	"encoding/base32"
 	"encoding/binary"
 	"encoding/hex"
@@ -14,7 +13,6 @@ import (
 	"github.com/jcelliott/lumber"
 	"github.com/microcosm-cc/bluemonday"
 	"github.com/russross/blackfriday"
-	"github.com/schollz/cryptopasta"
 	"github.com/shurcooL/github_flavored_markdown"
 	"golang.org/x/crypto/bcrypt"
 )
@@ -160,26 +158,6 @@ func CheckPasswordHash(password, hashedString string) error {
 	return bcrypt.CompareHashAndPassword(hash, []byte(password))
 }
 
-func EncryptString(toEncrypt string, password string) (string, error) {
-	key := sha256.Sum256([]byte(password))
-	encrypted, err := cryptopasta.Encrypt([]byte(toEncrypt), &key)
-	if err != nil {
-		return "", err
-	}
-
-	return hex.EncodeToString(encrypted), nil
-}
-
-func DecryptString(toDecrypt string, password string) (string, error) {
-	key := sha256.Sum256([]byte(password))
-	contentData, err := hex.DecodeString(toDecrypt)
-	if err != nil {
-		return "", err
-	}
-	bDecrypted, err := cryptopasta.Decrypt(contentData, &key)
-	return string(bDecrypted), err
-}
-
 // exists returns whether the given file or directory exists or not
 func exists(path string) bool {
 	_, err := os.Stat(path)

utils_test.go

@@ -32,23 +32,3 @@ func TestHashing(t *testing.T) {
 		t.Errorf("Should NOT be correct password")
 	}
 }
-
-func TestEncryption(t *testing.T) {
-	s, err := EncryptString("some string", "some password")
-	if err != nil {
-		t.Errorf("What")
-	}
-	log.Debug(s)
-	d, err := DecryptString(s, "some wrong password")
-	if err == nil {
-		t.Errorf("Should throw error for bad password")
-	}
-	d, err = DecryptString(s, "some password")
-	if err != nil {
-		t.Errorf("Should not throw password")
-	}
-	if d != "some string" {
-		t.Errorf("Problem decoding")
-	}
-
-}