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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.
This commit is contained in:
Simon Tatham
2023-04-21 20:17:43 +01:00
parent d67c13eeb8
commit b77e985513
6 changed files with 44 additions and 8 deletions
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16
crypto/hmac.c
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@ -160,6 +160,22 @@ static const char *hmac_text_name(ssh2_mac *mac)
return ctx->text_name->s;
}
static const struct hmac_extra ssh_hmac_sha512_extra = { &ssh_sha512, "" };
const ssh2_macalg ssh_hmac_sha512 = {
.new = hmac_new,
.free = hmac_free,
.setkey = hmac_key,
.start = hmac_start,
.genresult = hmac_genresult,
.next_message = nullmac_next_message,
.text_name = hmac_text_name,
.name = "hmac-sha2-512",
.etm_name = "hmac-sha2-512-etm@openssh.com",
.len = 64,
.keylen = 64,
.extra = &ssh_hmac_sha512_extra,
};
static const struct hmac_extra ssh_hmac_sha256_extra = { &ssh_sha256, "" };
const ssh2_macalg ssh_hmac_sha256 = {
.new = hmac_new,