added password hashing and testing for the functions

pkg/encryption/password.go

@@ -0,0 +1,19 @@
+// Encryption package has functions inside of it that utilize various encypting and hashing techniques
+package encryption
+
+import "golang.org/x/crypto/bcrypt"
+
+func HashPassword(password string) (string, error) {
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	return string(hash), err
+}
+
+func CheckPassword(hash, plainText []byte) (bool, error) {
+	err := bcrypt.CompareHashAndPassword(hash, plainText)
+
+	if err != nil {
+		return false, err
+	}
+
+	return true, nil
+}

pkg/encryption/password_test.go

@@ -0,0 +1,38 @@
+// Encryption package has functions inside of it that utilize various encypting and hashing techniques
+package encryption
+
+import "testing"
+
+func TestPasswordHashing(t *testing.T) {
+	passwords := []struct {
+		ok        bool
+		plainText string
+		hash      string
+	}{
+		{true, "fd#@$s4$oiahfoij", ""},
+		{false, "ashf324yiuf!@#", ""},
+		{true, "4892fjsk#@(!!)", ""},
+		{false, "fsufh$&*(#(*f))", ""},
+	}
+
+	for _, password := range passwords {
+		var err error
+		if password.ok {
+			password.hash, err = HashPassword(password.plainText)
+		} else {
+			password.hash, err = HashPassword("this will fail")
+		}
+
+		if err != nil {
+			t.Errorf("Error in password_test using HashPassword func: %s", err.Error())
+		}
+
+		ok, err := CheckPassword([]byte(password.hash), []byte(password.plainText))
+
+		if err != nil {
+			if ok != password.ok {
+				t.Errorf("In password_test expected %t, but got %t from CheckPassword func", password.ok, ok)
+			}
+		}
+	}
+}