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See ChangeLog: Thu May 25 18:39:11 CEST 2000 Werner Koch

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Werner Koch 2000-05-25 16:28:04 +00:00
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11 changed files with 1207 additions and 60 deletions
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17
doc/gcryptref-digest.sgml
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@ -65,7 +65,10 @@
</indexterm>
<function>gcry_md_open</function> creates the context required for
the message digest functions. The hash algorithm may optionally be
specified.
specified. It is possible to use these functions as MAC functons; therefore
the flag <literal/GCRY_MD_FLAG_HMAC/ must be given along with the
hash functions. Other MAC algorithms than HMAC are currently not
supported. The key for the MAC must be set using the gcry_md_setkey macro.
<function>gcry_md_close</function> releases all resources associated
with the context.
<function>gcry_md_enable</function> may be used to enable hash
@ -149,6 +152,7 @@
<refnamediv>
<refname>gcry_md_ctl</refname>
<refname>gcry_md_final</refname>
<refname>gcry_md_setkey</refname>
<refpurpose>perform special operations on a digest context</refpurpose>
</refnamediv>
@ -179,9 +183,18 @@
</para>
<para>
Currently defined values for <parameter>cmd</> are:
<literal>GCRYCTL_FINALIZE</> and the conevnience macro
</para>
<para>
<literal>GCRYCTL_FINALIZE</> and the convenience macro
<function>gcry_md_final(a)</>
</para>
<para>
<literal>GCRYCTL_SET_KEY</> and the convenience macro
<function>gcry_md_setkey(a)</>. This is used to turn these
hash functions into MAC functions. The key may be any string
of the speicified length. The type of the MAC is determined
by special flags set with the open function.
</para>
</refentry>
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