Cryptographic Token Interface Standard

PKCS#11

Cellular Digital Packet Data

Cellular Digital Packet Data (CDPD) is a set of protocols for wireless communication. The basic set of mechanisms to support CDPD applications includes the following:

Diffie-Hellman key generation (256-1024 bits)

Diffie-Hellman key derivation (256-1024 bits)

RC4 key generation (40-128 bits)

RC4 (40-128 bits)

(The initial CDPD security specification limits the size of the Diffie-Hellman key to 256 bits, but it has been recommended that the size be increased to at least 512 bits.)