The IBM PCI Cryptographic Coprocessor is a 2/3 length PCI adapter
combining hardware and software designed to provide high performance
hardware engines for secure internet transactions such as
data exchange, verifying electronic signatures, bulk data encryption
and decryption. Cryptographic processes are performed within a tamper
resistant enclosure on the adapter that is designed to meet FIPS PUB
140-1 standard for commercial cryptographic devices at Level 3.

Security functions supported by the adapter includes:

• Data Encryption Standard (DES) (56 and 40 bit keys) encryption and
  decryption, with pre- and post-padding; the coprocessor uses both
  electronic and codebook (ECB) and cipher block chain (CBC) modes of
  encryption.
  
• Message Authentication (MAC) and financial PIN processing
  
• Triple DES encryption and decryption of general data
  
• RSA key-pair generation
  
• RSA signature generation and signature verification
  
• Secure Hashing Algorithm (SHA-1) in hardware
  
• Hardware random number generation
  
• Protected data storage and retrieval
  
• Other non-cryptographic security utilities can be carried out
  using the onboard processor