mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-01-09 17:38:00 +00:00
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
|
/*
|
||
|
|
* Top-level vtables to select a SHA-512 implementation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <assert.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include "putty.h"
|
||
|
|
#include "ssh.h"
|
||
|
|
#include "sha512.h"
|
||
|
|
|
||
|
|
static const ssh_hashalg *const real_sha512_algs[] = {
|
||
|
|
#if HAVE_NEON_SHA512
|
||
|
|
&ssh_sha512_neon,
|
||
|
|
#endif
|
||
|
|
&ssh_sha512_sw,
|
||
|
|
NULL,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const ssh_hashalg *const real_sha384_algs[] = {
|
||
|
|
#if HAVE_NEON_SHA512
|
||
|
|
&ssh_sha384_neon,
|
||
|
|
#endif
|
||
|
|
&ssh_sha384_sw,
|
||
|
|
NULL,
|
||
|
|
};
|
||
|
|
|
||
|
|
static ssh_hash *sha512_select(const ssh_hashalg *alg)
|
||
|
|
{
|
||
|
|
const ssh_hashalg *const *real_algs =
|
||
|
|
(const ssh_hashalg *const *)alg->extra;
|
||
|
|
|
||
|
|
for (size_t i = 0; real_algs[i]; i++) {
|
||
|
|
const ssh_hashalg *alg = real_algs[i];
|
||
|
|
const struct sha512_extra *alg_extra =
|
||
|
|
(const struct sha512_extra *)alg->extra;
|
||
|
|
if (check_availability(alg_extra))
|
||
|
|
return ssh_hash_new(alg);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* We should never reach the NULL at the end of the list, because
|
||
|
|
* the last non-NULL entry should be software-only SHA-512, which
|
||
|
|
* is always available. */
|
||
|
|
unreachable("sha512_select ran off the end of its list");
|
||
|
|
}
|
||
|
|
|
||
|
|
const ssh_hashalg ssh_sha512 = {
|
||
|
|
.new = sha512_select,
|
||
|
|
.hlen = 64,
|
||
|
|
.blocklen = 128,
|
||
|
|
HASHALG_NAMES_ANNOTATED("SHA-512", "dummy selector vtable"),
|
||
|
|
.extra = real_sha512_algs,
|
||
|
|
};
|
||
|
|
|
||
|
|
const ssh_hashalg ssh_sha384 = {
|
||
|
|
.new = sha512_select,
|
||
|
|
.hlen = 48,
|
||
|
|
.blocklen = 128,
|
||
|
|
HASHALG_NAMES_ANNOTATED("SHA-384", "dummy selector vtable"),
|
||
|
|
.extra = real_sha384_algs,
|
||
|
|
};
|