She is also known for documenting and popularizing the CFOP method, which is the most commonly used method for speedsolving the Rubik"s Cube, also known as speedcubing. This method describes solving the cube in a layer-by-layer fashion. First a so-called "cross" is made on the first layer, consisting of the center piece and four edges.
The first layer corners and edges of the second layer are put into their correct positions simultaneously (four pairs).
The last layer is solved by first orienting and then permuting the last layer cubies using a large number of algorithms. Fascinated by puzzles and complex geometry, Fridrich even has Rubik"s Cube inventor Ernő Rubik"s signature in her notebook.
Rubik signed the notebook at the Rubik"s Cube World Championship in Budapest in 1982, an event where Fridrich finished tenth. In the Rubik"s Cube World Championship in Toronto, Canada in 2003, she finished fifth.
In the speedcubing community she is considered one of the pioneers of speedcubing, along with Lars Petrus.
Nearly all of the fastest speedcubers have based their methods on Fridrich"s, usually referred to as CFOP (Cross, First 2 Layers, Orient Last Layer, Permute Last Layer). Jessica Fridrich works as a professor at the Department of Electrical and Computer Engineering at Binghamton University and specializes in digital watermarking and forensics. She received her Mississippi degree in applied mathematics from the Czechoslovakian Technical University in Prague in 1987, and her Doctor of Philosophy in systems science from Binghamton University in 1995.
7,787,652 Lossless embedding of data in digital objects
7,787,030 Method and apparatus for identifying an imaging device
7,616,237 Method and apparatus for identifying an imaging device
RE40,477 Reliable detection of LSB steganography in color and grayscale images
7,239,717 Lossless embedding of data in digital objects
7,006,656 Lossless embedding of data in digital objects
6,831,991 Reliable detection of LSB steganography in color and grayscale images.