Posts Tagged ‘AOPR’

How to Break 70% of Passwords in Minutes

Tuesday, February 14th, 2017

According to surveys, the average English-speaking consumer maintains around 27 online accounts. Memorizing 27 unique, cryptographically secure passwords is nearly impossible for a person one could reasonably call “average”. As a result, the average person tends to reuse passwords, which means that a single password (or its simple variations) can be used to protect multiple online accounts and services. The same passwords are very likely to be chosen to protect access to offline resources such as encrypted archives and documents. In fact, several independent researches published between 2012 and 2016 suggest that between 59 and 61 per cent of consumers reuse passwords.

Considering how consistent the numbers are between multiple researches carried out over the course of four years, we can safely assume that around 60% of consumers reuse their passwords. How can this data help us break passwords, and how did we arrive to the value of 70% in the title? Read along to find out! (more…)

ElcomSoft Breaks Passwords Faster with NVIDIA Tesla K20 Acceleration

Tuesday, February 5th, 2013

We have just updated Advanced Office Password Recovery and Distributed Password Recovery with NVIDIA Tesla K20 support, enabling world’s fastest password recovery with NVIDIA’s latest supercomputing platform. Elcomsoft Advanced Office Password Recovery removes document restrictions and recovers passwords protecting Microsoft Office documents, while Elcomsoft Distributed Password Recovery can quickly break a wide range of passwords on multiple workstations with near zero scalability overhead.

GPU-accelerated password recovery dramatically reduces the time required to break long and complex passwords, offering more than 20-fold performance gain over CPU-only operations (compared to a quad-core Intel i7 CPU). NVIDIA’s latest Tesla K20 platform further increases the performance, delivering a nearly 1.5x performance increase compared to the use of a dual-core NVIDIA GeForce GTX 690 board.

A workstation equipped with an NVIDIA Tesla K20 unit can crunch as many as 27500 Office 2007 passwords per second, or 13500 passwords per second in the case of Microsoft Office 2010. In comparison, the next-best solution, a dual-core GeForce GTX 690 board, can try some 19000 Office 2007 or 9000 Office 2010 passwords per second.

The updated Elcomsoft Advanced Office Password Recovery and Elcomsoft Distributed Password Recovery now fully support the latest NVIDIA supercomputing hardware, enabling users to gain unrestricted access to many types of documents in far less time.

ElcomSoft Breaks Into MS Office 2013

Wednesday, September 26th, 2012

ElcomSoft has recently updated two products recovering Microsoft Office passwords with Office 2013 support. Elcomsoft Advanced Office Password Recovery and Elcomsoft Distributed Password Recovery received the ability to recover plain-text passwords used to encrypt documents in Microsoft Office 2013 format. Initially, we are releasing a CPU-only implementation, with support for additional hardware accelerators such as ATI and NVIDIA video cards scheduled for a later date.

Stronger Protection

In version 2013, Microsoft used an even tighter encryption compared to the already strong Office 2010. To further strengthen the protection, Microsoft replaced SHA1 algorithm used for calculating hash values with a stronger and slower SHA512. In addition, the encryption key is now 256 bits long, while the previous versions of Microsoft Office were using ‘only’ 128 bits. While the length of the encryption key has no direct effect on the speed of password recovery, the slower and stronger hash calculation algorithm does. It’s obvious that Microsoft is dedicated to making subsequent Office releases more and more secure.

No Brute Force

While we continue supporting brute force attacks, brute force becomes less and less efficient with every new release of Microsoft Office even with full-blown hardware acceleration in place. Office 2013 sets a new standard in document encryption, pretty much taking brute force out of the question. This is why we continue relying on a variety of smart attacks that include a combination of dictionary attacks, masks and advanced permutations. Brute-forcing SHA512 hashes with 256-bit encryption key is a dead end. Smart password attacks are pretty much the only way to go with Office 2013.