Commit 37eb7691ac for openssl.org

commit 37eb7691acf72f052c92172363dbcc39a960df84
Author: Neil Horman <nhorman@openssl.org>
Date:   Tue Mar 3 09:45:19 2026 -0500

    Add extern key buffer setup for hash table

    One thing @npajkovsky noted in our recent discussion about the internal
    hash table was that its unfortunate that keys have to be sized for the
    maximal use case in our current hashtable code.

    We can avoid that.

    Introduce a new init mechanism that allows for keys to initalized using
    an external buffer that can be setup and marshalled independently of the
    key itself.  This allows us to only allocate the amount of data needed
    for the key, rather than a maximally sized buffer where appropriate and
    adventageous.

    Reviewed-by: Paul Dale <paul.dale@oracle.com>
    Reviewed-by: Saša Nedvědický <sashan@openssl.org>
    MergeDate: Tue Mar 24 16:23:07 2026
    (Merged from https://github.com/openssl/openssl/pull/30254)

diff --git a/include/internal/hashtable.h b/include/internal/hashtable.h
index 320408bba4..b4d1f283f8 100644
--- a/include/internal/hashtable.h
+++ b/include/internal/hashtable.h
@@ -176,6 +176,13 @@ static ossl_inline ossl_unused int ossl_key_raw_copy(HT_KEY *key, const uint8_t
         (key)->key_header.cached_hash = hash; \
     } while (0)

+#define HT_INIT_KEY_EXTERNAL(key, buf, len) \
+    do {                                    \
+        HT_INIT_KEY((key));                 \
+        (key)->key_header.keybuf = (buf);   \
+        (key)->key_header.keysize = (len);  \
+    } while (0)
+
 #define HT_KEY_GET_HASH(key) (key)->key_header.cached_hash

 /*