diff --git a/quartz/util/encryption.ts b/quartz/util/encryption.ts
index 5bc7c3944..feef85f29 100644
--- a/quartz/util/encryption.ts
+++ b/quartz/util/encryption.ts
@@ -28,11 +28,8 @@ export interface DirectoryConfig extends EncryptionConfig {
   password: string
 }
 
-export interface EncryptionOptions {
-  algorithm: string
+export interface EncryptionOptions extends EncryptionConfig {
   encryptedFolders: { [folderPath: string]: string | DirectoryConfig }
-  message: string
-  ttl: number
 }
 
 // =============================================================================