176 lines
5.4 KiB
Groff
Executable File
176 lines
5.4 KiB
Groff
Executable File
.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.16)
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.\" ========================================================================
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.\"
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.IX Title "DH_NEW_BY_NID 3"
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.TH DH_NEW_BY_NID 3 "2020-03-02" "3.0.0-dev" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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DH_new_by_nid, DH_get_nid \- get or find DH named parameters
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 2
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\& #include <openssl/dh.h>
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\& DH *DH_new_by_nid(int nid);
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.Ve
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.PP
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Deprecated since OpenSSL 3.0, can be hidden entirely by defining
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\&\fB\s-1OPENSSL_API_COMPAT\s0\fR with a suitable version value, see
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\&\fIopenssl_user_macros\fR\|(7):
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.PP
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.Vb 1
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\& int *DH_get_nid(DH *dh);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIDH_new_by_nid()\fR creates and returns a \s-1DH\s0 structure containing named parameters
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\&\fBnid\fR. Currently \fBnid\fR must be \fBNID_ffdhe2048\fR, \fBNID_ffdhe3072\fR,
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\&\fBNID_ffdhe4096\fR, \fBNID_ffdhe6144\fR, \fBNID_ffdhe8192\fR,
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\&\fBNID_modp_1536\fR, \fBNID_modp_2048\fR, \fBNID_modp_3072\fR,
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\&\fBNID_modp_4096\fR, \fBNID_modp_6144\fR or \fBNID_modp_8192\fR.
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.PP
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\&\fIDH_get_nid()\fR determines if the parameters contained in \fBdh\fR match
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any named set. It returns the \s-1NID\s0 corresponding to the matching parameters or
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\&\fBNID_undef\fR if there is no match. This function is deprecated.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIDH_new_by_nid()\fR returns a set of \s-1DH\s0 parameters or \fB\s-1NULL\s0\fR if an error occurred.
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.PP
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\&\fIDH_get_nid()\fR returns the \s-1NID\s0 of the matching set of parameters or
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\&\fBNID_undef\fR if there is no match.
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.SH "HISTORY"
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.IX Header "HISTORY"
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The \fIDH_get_nid()\fR function was deprecated in OpenSSL 3.0.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2017\-2020 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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