Add support for diffie-hellman-group-exchange-sha256. Tested against a

[u/mdw/putty] / sshsha.c

diff --git a/sshsha.c b/sshsha.c
index c17149e..29908b6 100644 (file)
--- a/sshsha.c
+++ b/sshsha.c
@@ -188,6 +188,38 @@ void SHA_Simple(void *p, int len, unsigned char *output)
     SHA_Final(&s, output);
 }
 
+/*
+ * Thin abstraction for things where hashes are pluggable.
+ */
+
+static void *sha1_init(void)
+{
+    SHA_State *s;
+
+    s = snew(SHA_State);
+    SHA_Init(s);
+    return s;
+}
+
+static void sha1_bytes(void *handle, void *p, int len)
+{
+    SHA_State *s = handle;
+
+    SHA_Bytes(s, p, len);
+}
+
+static void sha1_final(void *handle, unsigned char *output)
+{
+    SHA_State *s = handle;
+
+    SHA_Final(s, output);
+    sfree(s);
+}
+
+const struct ssh_hash ssh_sha1 = {
+    sha1_init, sha1_bytes, sha1_final, 20
+};
+
 /* ----------------------------------------------------------------------
  * The above is the SHA-1 algorithm itself. Now we implement the
  * HMAC wrapper on it.
@@ -282,7 +314,7 @@ void hmac_sha1_simple(void *key, int keylen, void *data, int datalen,
     SHA_Final(&states[1], output);
 }
 
-const struct ssh_mac ssh_sha1 = {
+const struct ssh_mac ssh_hmac_sha1 = {
     sha1_make_context, sha1_free_context, sha1_key,
     sha1_generate, sha1_verify,
     "hmac-sha1",
@@ -290,7 +322,7 @@ const struct ssh_mac ssh_sha1 = {
     "HMAC-SHA1"
 };
 
-const struct ssh_mac ssh_sha1_buggy = {
+const struct ssh_mac ssh_hmac_sha1_buggy = {
     sha1_make_context, sha1_free_context, sha1_key_buggy,
     sha1_generate, sha1_verify,
     "hmac-sha1",