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Import OpenSSL1.1.1k

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This commit is contained in:
Steve Dower
2021-03-29 21:47:40 +01:00
parent ae8aba4cbc
commit b439f09b29
104 changed files with 1075 additions and 379 deletions
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27
doc/man3/DH_generate_key.pod
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@@ -2,7 +2,8 @@
=head1 NAME
DH_generate_key, DH_compute_key - perform Diffie-Hellman key exchange
DH_generate_key, DH_compute_key, DH_compute_key_padded - perform
Diffie-Hellman key exchange
=head1 SYNOPSIS
@@ -10,14 +11,16 @@ DH_generate_key, DH_compute_key - perform Diffie-Hellman key exchange
int DH_generate_key(DH *dh);
int DH_compute_key(unsigned char *key, BIGNUM *pub_key, DH *dh);
int DH_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh);
int DH_compute_key_padded(unsigned char *key, const BIGNUM *pub_key, DH *dh);
=head1 DESCRIPTION
DH_generate_key() performs the first step of a Diffie-Hellman key
exchange by generating private and public DH values. By calling
DH_compute_key(), these are combined with the other party's public
value to compute the shared key.
DH_compute_key() or DH_compute_key_padded(), these are combined with
the other party's public value to compute the shared key.
DH_generate_key() expects B<dh> to contain the shared parameters
B<dh-E<gt>p> and B<dh-E<gt>g>. It generates a random private DH value
@@ -28,6 +31,14 @@ published.
DH_compute_key() computes the shared secret from the private DH value
in B<dh> and the other party's public value in B<pub_key> and stores
it in B<key>. B<key> must point to B<DH_size(dh)> bytes of memory.
The padding style is RFC 5246 (8.1.2) that strips leading zero bytes.
It is not constant time due to the leading zero bytes being stripped.
The return value should be considered public.
DH_compute_key_padded() is similar but stores a fixed number of bytes.
The padding style is NIST SP 800-56A (C.1) that retains leading zero bytes.
It is constant time due to the leading zero bytes being retained.
The return value should be considered public.
=head1 RETURN VALUES
@@ -36,15 +47,21 @@ DH_generate_key() returns 1 on success, 0 otherwise.
DH_compute_key() returns the size of the shared secret on success, -1
on error.
DH_compute_key_padded() returns B<DH_size(dh)> on success, -1 on error.
The error codes can be obtained by L<ERR_get_error(3)>.
=head1 SEE ALSO
L<DH_new(3)>, L<ERR_get_error(3)>, L<RAND_bytes(3)>, L<DH_size(3)>
=head1 HISTORY
DH_compute_key_padded() was added in OpenSSL 1.0.2.
=head1 COPYRIGHT
Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy