poly1305: convert poly1305 to use param decoder

Reviewed-by: Paul Yang <paulyang.inf@gmail.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28142)

diff --git a/providers/implementations/macs/poly1305_prov.c.in b/providers/implementations/macs/poly1305_prov.c.in
index 19974f9289b166a3535aa57504ae3f07b092e9b7..87537d54cf69b9b236971778e25f7b6665724cfa 100644 (file)
--- a/providers/implementations/macs/poly1305_prov.c.in
+++ b/providers/implementations/macs/poly1305_prov.c.in
@@ -6,6 +6,11 @@
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */
+{-
+use OpenSSL::paramnames qw(produce_param_decoder);
+-}
+
+#include <string.h>
 
 #include <openssl/core_dispatch.h>
 #include <openssl/core_names.h>
@@ -14,6 +19,7 @@
 #include <openssl/err.h>
 #include <openssl/proverr.h>
 
+#include "internal/cryptlib.h"
 #include "crypto/poly1305.h"
 
 #include "prov/implementations.h"
@@ -131,43 +137,50 @@ static int poly1305_final(void *vmacctx, unsigned char *out, size_t *outl,
     return 1;
 }
 
-static const OSSL_PARAM known_gettable_params[] = {
-    OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE, NULL),
-    OSSL_PARAM_END
-};
+{- produce_param_decoder('poly1305_get_params',
+                         (['MAC_PARAM_SIZE',        'size', 'size_t'],
+                         )); -}
+
 static const OSSL_PARAM *poly1305_gettable_params(void *provctx)
 {
-    return known_gettable_params;
+    return poly1305_get_params_list;
 }
 
 static int poly1305_get_params(OSSL_PARAM params[])
 {
-    OSSL_PARAM *p;
+    struct poly1305_get_params_st p;
 
-    if ((p = OSSL_PARAM_locate(params, OSSL_MAC_PARAM_SIZE)) != NULL)
-        return OSSL_PARAM_set_size_t(p, poly1305_size());
+    if (!poly1305_get_params_decoder(params, &p))
+        return 0;
+
+    if (p.size != NULL && !OSSL_PARAM_set_size_t(p.size, poly1305_size()))
+        return 0;
 
     return 1;
 }
 
-static const OSSL_PARAM known_settable_ctx_params[] = {
-    OSSL_PARAM_octet_string(OSSL_MAC_PARAM_KEY, NULL, 0),
-    OSSL_PARAM_END
-};
+{- produce_param_decoder('poly1305_set_ctx_params',
+                         (['MAC_PARAM_KEY',     'key',  'octet_string'],
+                        )); -}
+
 static const OSSL_PARAM *poly1305_settable_ctx_params(ossl_unused void *ctx,
                                                       ossl_unused void *provctx)
 {
-    return known_settable_ctx_params;
+    return poly1305_set_ctx_params_list;
 }
 
 static int poly1305_set_ctx_params(void *vmacctx, const OSSL_PARAM *params)
 {
     struct poly1305_data_st *ctx = vmacctx;
-    const OSSL_PARAM *p;
+    struct poly1305_set_ctx_params_st p;
 
-    if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_KEY)) != NULL
-            && !poly1305_setkey(ctx, p->data, p->data_size))
+    if (ctx == NULL || !poly1305_set_ctx_params_decoder(params, &p))
         return 0;
+
+    if (p.key != NULL)
+        if (p.key->data_type != OSSL_PARAM_OCTET_STRING
+                || !poly1305_setkey(ctx, p.key->data, p.key->data_size))
+            return 0;
     return 1;
 }