Hashing and Digital Signature Functions Summary

The functions described in this section are used by applications to compute hashes (also known as message digests), and are also used to create and verify digital signatures. The following table briefly describes each function.

Function
Description
CryptCreateHash
Create an "empty" hash object.
CryptDestroyHash
Destroy a hash object.
CryptGetHashParam
Retrieve a hash object parameter.
CryptHashData
Hash a block of data, adding it to the specified hash object.
CryptHashSessionKey
Hash a session key, adding it to the specified hash object.
CryptSetHashParam
Set a hash object parameter.
CryptSignHash
Sign the specified hash object.
CryptVerifySignature
Verify a digital signature, given a handle to the hash object that was supposedly signed.

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