Merge pull request #9979 from anhu/falcon_no_elseif

Fixes Falcon else-if chain key detection

Author: dgarske

wolfcrypt/src/asn.c

@@ -9582,8 +9582,8 @@ int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID, word32* oidSz,
             return MEMORY_E;
 
         if (wc_falcon_init(falcon) == 0) {
-            tmpIdx = 0;
-            if (wc_falcon_set_level(falcon, 1) == 0) {
+            if ((*algoID == 0) && (wc_falcon_set_level(falcon, 1) == 0)) {
+                tmpIdx = 0;
                 if (wc_Falcon_PrivateKeyDecode(key, &tmpIdx, falcon, keySz)
                     == 0) {
                     *algoID = FALCON_LEVEL1k;
@@ -9592,7 +9592,8 @@ int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID, word32* oidSz,
                     WOLFSSL_MSG("Not Falcon Level 1 DER key");
                 }
             }
-            else if (wc_falcon_set_level(falcon, 5) == 0) {
+            if ((*algoID == 0) && (wc_falcon_set_level(falcon, 5) == 0)) {
+                tmpIdx = 0;
                 if (wc_Falcon_PrivateKeyDecode(key, &tmpIdx, falcon, keySz)
                     == 0) {
                     *algoID = FALCON_LEVEL5k;
@@ -9601,7 +9602,7 @@ int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID, word32* oidSz,
                     WOLFSSL_MSG("Not Falcon Level 5 DER key");
                 }
             }
-            else {
+            if (*algoID == 0) {
                 WOLFSSL_MSG("GetKeyOID falcon initialization failed");
             }
             wc_falcon_free(falcon);