From e970b1fdb5963448f8d54d70ae903883605da32d Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Thu, 23 Jun 2016 21:33:05 +0200
Subject: nametransform: drop unused noiv functions

As DirIV is now mandatory there is no user for the noiv functions.
---
 internal/nametransform/noiv.go | 63 ------------------------------------------
 1 file changed, 63 deletions(-)
 delete mode 100644 internal/nametransform/noiv.go

(limited to 'internal/nametransform/noiv.go')

diff --git a/internal/nametransform/noiv.go b/internal/nametransform/noiv.go
deleted file mode 100644
index f1009e4..0000000
--- a/internal/nametransform/noiv.go
+++ /dev/null
@@ -1,63 +0,0 @@
-package nametransform
-
-import (
-	"strings"
-)
-
-const (
-	OpEncrypt = iota
-	OpDecrypt
-)
-
-// DecryptPathNoIV - decrypt path using CBC without any IV.
-// This function is deprecated by the the more secure DirIV variant and only retained
-// for compatability with old filesystems.
-func (be *NameTransform) DecryptPathNoIV(cipherPath string) (plainPath string, err error) {
-	plainPath, err = be.translatePathNoIV(cipherPath, OpDecrypt)
-	return plainPath, err
-}
-
-// EncryptPathNoIV - decrypt path using CBC without any IV.
-// This function is deprecated by the the more secure DirIV variant and only retained
-// for compatability with old filesystems.
-func (be *NameTransform) EncryptPathNoIV(plainPath string) (cipherPath string) {
-	cipherPath, _ = be.translatePathNoIV(plainPath, OpEncrypt)
-	return cipherPath
-}
-
-// translatePathZeroIV - encrypt or decrypt path using CBC with an all-zero IV.
-// Just splits the string on "/" and hands the parts to encryptName() / decryptName()
-func (be *NameTransform) translatePathNoIV(path string, op int) (string, error) {
-	var err error
-
-	// Empty string means root directory
-	if path == "" {
-		return path, err
-	}
-
-	zeroIV := make([]byte, dirIVLen)
-
-	// Run operation on each path component
-	var translatedParts []string
-	parts := strings.Split(path, "/")
-	for _, part := range parts {
-		if part == "" {
-			// This happens on "/foo/bar/" on the front and on the end.
-			// Don't panic.
-			translatedParts = append(translatedParts, "")
-			continue
-		}
-		var newPart string
-		if op == OpEncrypt {
-			newPart = be.EncryptName(part, zeroIV)
-		} else {
-			newPart, err = be.DecryptName(part, zeroIV)
-			if err != nil {
-				return "", err
-			}
-		}
-		translatedParts = append(translatedParts, newPart)
-	}
-
-	return strings.Join(translatedParts, "/"), err
-}
-- 
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