Password Recovery Forgot how to decrypt the password when opening Excel? Xls, xlsx remove password, Excel decrypt
2024-04-08 20:54:17
If you forget your password when opening Excel, there is currently no official way to retrieve it. The only solution is to try possible passwords, of course, the number of passwords is an astronomical number, as many as several million years cannot be solved.
Depending on the complexity of the password, it is generally recommended that individuals try passwords they have previously used, as there is a certain chance of retrieving the password. If the Excel file is not encrypted by oneself, the probability of manually attempting to unlock it one by one is basically 0. Nowadays, software is mostly used to try passwords, but the efficiency of software attempts is also limited. For Office 2007 Excel files, the CPU with AMD 3900x can try approximately 6000 passwords per second, and slightly more complex passwords cannot be unlocked. Nowadays, GPUs, which are graphics cards, are commonly used to try passwords. With the capabilities of AMD's flagship graphics card, it can try hundreds of thousands of passwords per second, which is tens of times faster than the CPU, greatly increasing the probability of password retrieval.
Of course, the version of the file also limits the speed of password recovery. The difficulty of Office 2013 files has increased by more than 10 times, and even flagship graphics cards can only try 20000 passwords per second. Using CPU 3900X, there are only about 800 password attempts per second. Currently, the main versions of OFFICE are 2003/2007/2010/2013/2019/2021, and higher versions of Excel. The encryption methods mainly include AES128 and AES256, among which AES256 is the strongest encryption method on the surface. The encryption methods in 2007, 2010, and 2013 use multiple iterations of slow encryption (each password verification requires multiple rounds of encryption), and the password retrieval on personal computers is almost negligible.
In order to significantly improve the decryption ability and recover or remove passwords in a short period of time, this site uses a cloud computing cluster, where you can upload files and quickly try to retrieve passwords. With the help of this website cluster, you can launch large-scale cloud computing in just one step. It adopts advanced password recovery technology internationally and supports multiple recovery methods, quickly solving the problem of forgetting passwords.