EFS加密資料還原工具 - Advanced EFS Data Recovery (AEFSDR)，可以還原（解密）Windows EFS（Encrypting File System）加密的軟體，即使電腦無法開機且無法登入，或加密密鑰（公鑰或私鑰）被篡改的情況下，也可以對檔案進行解密，甚至是Windows使用SYSKEY保護都能夠解密，透過攻擊EFS來中斷NTFS加密、解密來自其他網域使用者的檔案並刪除使用者帳號及使硬碟離線、能在已格式化的系統分割區中還原加密檔案、使用低階硬碟掃描搜尋加密金鑰、幫助分析刪除的資料。（阿榮）
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官方網站：Elcomsoft
軟體性質：共享軟體
試用限制：功能限制
介面語言：英文、簡體中文
系統需求：Windows
關鍵字：aefsdr, Advanced EFS Data Recovery Standard, Advanced EFS Data Recovery Professional
A program to recover (decrypt) files protected with Windows EFS (Encrypting File System). Files are being decrypted even in a case when the system is not bootable and so you cannot log on, and/or some encryption keys have been tampered. AEFSDR effectively (and instantly) decrypts the files protected under all versions Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008/2012 and Windows 7/8. Encryption keys (private or master) have been tampered. Besides, decryption is possible even when Windows is protected using SYSKEY. AEFSDR effectively (and instantly) decrypts the files protected under all versions of Windows XP (32-bit and 64-bit editions, all service packs).