The functions described in this chapter are used by applications to compute hashes (also known as message digests), as well as to create and verify digital signatures. The following table briefly describes each function.
| Function | Description |
|---|---|
| CPCreateHash | Creates an "empty" hash object. |
| CPDestroyHash | Destroys a hash object. |
| CPDuplicateHash | Makes an exact copy of a hash and the state the hash is in. |
| CPGetHashParam | Retrieves a hash object parameter. |
| CPHashData | Hashes a block of data, adding it to the specified hash object. |
| CPHashSessionKey | Hashes a session key, adding it to the specified hash object. |
| CPSetHashParam | Sets a hash object parameter. |
| CPSignHash | Signs the specified hash object. |
| CPVerifySignature | Verifies a digital signature. |