上面都有寫了 這用於Excel workbook or sheet password
NB! This program can't remove file protection.. if you are unable to open the file, this program won't help you.
我說的是 office password .
大家應該很少留意到 office 加密選項共有分
演算法
Microsoft Strong Cryptographic Provider
Microsoft Enhanced Cryptographic Provider
Microsoft Enhanced DSS and Diffie-Hellman SChannel Cryptographic Provider
Microsoft Base DSS and Diffie-Hellman Cryptographic Provider 等
key長度
RC4:Encryption, 40-bit~128-bit:
http://support.microsoft.com/kb/290112/en-us/