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[ AcquireHMACInfo | ConstructHMAC | DestroyHMACInfo | FinalizeHMAC | GetHMACDigest | GetHMACDigestsize | IntializeHMAC | ResetHMAC | UpdateHMAC ]

AcquireHMACInfo() allocate the HMACInfo structure.

The format of the AcquireHMACInfo method is:

  HMACInfo *AcquireHMACInfo(const HashType hash)

A description of each parameter follows:

hash

The hash type.

ConstructHMAC() constructs the HMAC digest.

The format of the ConstructHMAC method is:

  ConstructHMAC(HMACInfo *hmac_info,const StringInfo *key,
    const StringInfo *message)

A description of each parameter follows:

hmac_info

The address of a structure of type HMACInfo.

key

The key.

message

The message.

DestroyHMACInfo() zeros memory associated with the HMACInfo structure.

The format of the DestroyHMACInfo method is:

  HMACInfo *DestroyHMACInfo(HMACInfo *hmac_info)

A description of each parameter follows:

hmac_info

The cipher hmac_info.

FinalizeHMAC() finalizes the HMAC message digest computation.

The format of the FinalizeHMAC method is:

  FinalizeHMAC(HMACInfo *hmac_info)

A description of each parameter follows:

hmac_info

The address of a structure of type HMACInfo.

GetHMACDigest() returns the hmac digest.

The format of the GetHMACDigest method is:

  const StringInfo *GetHMACDigest(const hmacInfo *hmac_info)

A description of each parameter follows:

hmac_info

The hmac info.

GetHMACDigestsize() returns the HMAC digest size.

The format of the GetHMACDigestsize method is:

  unsigned int *GetHMACDigestsize(const HMACInfo *hmac_info)

A description of each parameter follows:

hmac_info

The hmac info.

IntializeHMAC() intializes the HMAC digest.

The format of the DestroyHMACInfo method is:

  void InitializeHMACInfo(HMACInfo *hmac_info,const StringInfo *key)

A description of each parameter follows:

hmac_info

The message authentication info.

key

The key.

ResetHMAC() resets the HMAC message digest computation.

The format of the ResetHMAC method is:

  ResetHMAC(HMACInfo *hmac_info)

A description of each parameter follows:

hmac_info

The address of a structure of type HMACInfo.

UpdateHMAC() updates the HMAC message digest.

The format of the UpdateHMAC method is:

  UpdateHMAC(HMACInfo *hmac_info,const StringInfo *message)

A description of each parameter follows:

hmac_info

The address of a structure of type HMACInfo.

message

The message