Latest update.
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@@ -24,15 +24,22 @@ B<NID_modp_1536>, B<NID_modp_2048>, B<NID_modp_3072>,
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B<NID_modp_4096>, B<NID_modp_6144> or B<NID_modp_8192>.
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DH_get_nid() determines if the parameters contained in B<dh> match
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any named set. It returns the NID corresponding to the matching parameters or
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B<NID_undef> if there is no match. This function is deprecated.
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any named safe prime group. It returns the NID corresponding to the matching
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parameters or B<NID_undef> if there is no match.
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Internally it caches the nid, so that any subsequent calls can fetch the
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cached value.
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If a matching p and g are not found and the value of parameter q is not set,
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then it is set to q = (p - 1) / 2.
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If parameter q is already set then it must also match the expected q otherwise
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no match will be found.
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This function is deprecated.
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=head1 RETURN VALUES
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DH_new_by_nid() returns a set of DH parameters or B<NULL> if an error occurred.
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DH_get_nid() returns the NID of the matching set of parameters or
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B<NID_undef> if there is no match.
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DH_get_nid() returns the NID of the matching set of parameters for p and g
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and optionally q, otherwise it returns B<NID_undef> if there is no match.
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=head1 HISTORY
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