AirSnort can be used to recover either standard 40-bit keys or what it refers to as 128-bit keys. However, as noted in Chapter 5, the label of 128-bit WEP is a slight misnomer because it refers to the size of the RC4 key. After subtracting the 24-bit initialization vector, only 104 bits are secret. To be accurate, then, AirSnort can be used to recover 40bit secret keys and 104-bit secret keys, which correspond to the two most common WEP implementations currently on the market. Some vendors have WEP implementations that use longer keys; for example, Nokia uses 128 secret bits in addition to the 24-bit IV, and this vendor's long key-length WEP cannot currently be attacked with AirSnort. However, the longer key length doesn't provide any real protection against this attack. If the history of open source development is a guide, future versions of AirSnort will be able to attack longer keys.
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You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.