Glossary
Cache key
The 64-bit identifier stored with each RDP bitmap cache tile, formed by two 32-bit values (key1 and key2) in the tile header.
Every tile in the RDP bitmap cache is stored with two 32-bit values, commonly called key1 and key2, which together form the 64-bit cache key of the bitmap. The key is how the client recognises a bitmap it already holds.
For the analyst, the key is an identifier to cite and compare: it appears in the tile header of both bcache*.bmc and Cache*.bin files and in the tile detail of RDP Bitmap Cache Parser. It carries no time or screen position. Header layouts are in the bcache*.bmc and Cache*.bin file format.