Method encryptFileName

backend/crypt/cipher.go:489–525

encryptFileName encrypts a file path

(in string)

// encryptFileName encrypts a file path
func (c *Cipher) encryptFileName(in string) string {
	segments := strings.Split(in, "/")
	for i := range segments {
		// Skip directory name encryption if the user chose to
		// leave them intact
		if !c.dirNameEncrypt && i != (len(segments)-1) {
			continue
		}

		// Strip version string so that only the non-versioned part
		// of the file name gets encrypted/obfuscated
		hasVersion := false
		var t time.Time
		if i == (len(segments)-1) && version.Match(segments[i]) {
			var s string
			t, s = version.Remove(segments[i])
			// version.Remove can fail, in which case it returns segments[i]
			if s != segments[i] {
				segments[i] = s
				hasVersion = true
			}
		}

		if c.mode == NameEncryptionStandard {
			segments[i] = c.encryptSegment(segments[i])
		} else {
			segments[i] = c.obfuscateSegment(segments[i])
		}

		// Add back a version to the encrypted/obfuscated
		// file name, if we stripped it off earlier
		if hasVersion {
			segments[i] = version.Add(segments[i], t)
		}
	}
	return strings.Join(segments, "/")
}

// EncryptFileName encrypts a file path
func (c *Cipher) EncryptFileName(in string) string {