hmac.sgml

UCL Common Code Library Routines common to a number of multimedia tools. The library originates

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HMAC

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cryptographic message authentication.

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<para>

HMAC is a cryptographic mechanism for message authentication described
in RFC2104.  It allows a sender and receiver with a shared
cryptographic key to verify the authenticity of a message.

</para>

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<para>

<ulink url="http://www.ietf.org/rfc/rfc2104.txt">RFC2104 - HMAC: Keyed-Hashing for Message Authentication</ulink>

</para>

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<para>

</para>

@data: 
@data_len: 
@key: 
@key_len: 
@digest: