Category: Applications

Testing of MS Office password recovery programs with GPU support

Password recovery software developers actively introduce general purpose computations on GPU (GPGPU) into their products. Today I will test three products, which already have support of NVIDIA and/or ATI cards for password recovery of Microsoft Office files. Read more »

MS Office encryption: keep making the old mistake

In one of the last articles I considered in details the process of the encryption evolution in different MS Office versions and concluded that it became better and better with every next version. However, as it is often happens in a updating of a software version, the new problems can appear unexpectadly, proving that the best is the enemy of the good. Read more »

RAR Password Recovery on GPU

Recently at least two RAR password recovery programs with GPU acceleration were released. The first was new 3.2 version of cRARk supporting CUDA technology. The second was a new igrargpu program written by Ivan Golubev. Read more »

Encryption evolution in Microsoft Office

In the conclusion of my article ‘On cryptosystems untrustworthiness’, written in 1998, I specified that the using the strong cryptography in application is gradually changing for the better. Lets consider evolution of cryptographic capabilities used by the one of the most popular applications for personal computers – MS Office, šespecially because recently Microsoft has officially opened specifications of this software, including encryption algorithms used. Here below I will speak only about passwords for file opening, because when using any other passwords (read-only access etc.) the text of the document is not encrypted and that is why they can be easily bypassed. Read more »