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Add support for HMAC-SHA512.

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I saw a post on comp.security.ssh just now where someone had
encountered an SSH server that would _only_ speak that, which makes it
worth bothering to implement.

The totally obvious implementation works, and passes the test cases
from RFC 6234.

(cherry picked from commit b77e985513)
This commit is contained in:
Simon Tatham
2023-04-21 20:17:43 +01:00
parent c545c04102
commit f6f9848465
6 changed files with 44 additions and 8 deletions
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3
ssh/transport2.c
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@ -20,7 +20,8 @@ const struct ssh_signkey_with_user_pref_id ssh2_hostkey_algs[] = {
};
const static ssh2_macalg *const macs[] = {
&ssh_hmac_sha256, &ssh_hmac_sha1, &ssh_hmac_sha1_96, &ssh_hmac_md5
&ssh_hmac_sha512, &ssh_hmac_sha256,
&ssh_hmac_sha1, &ssh_hmac_sha1_96, &ssh_hmac_md5
};
const static ssh2_macalg *const buggymacs[] = {
&ssh_hmac_sha1_buggy, &ssh_hmac_sha1_96_buggy, &ssh_hmac_md5