rsaenh: Implement duplicate_hash_impl for bcrypt-based hashes.

dlls/rsaenh/implglue.c

@@ -160,9 +160,17 @@ BOOL finalize_hash_impl(ALG_ID aiAlgid, HASH_CONTEXT *pHashContext, BYTE *pbHash
 BOOL duplicate_hash_impl(ALG_ID aiAlgid, const HASH_CONTEXT *pSrcHashContext,
                          HASH_CONTEXT *pDestHashContext) 
 {
-    *pDestHashContext = *pSrcHashContext;
-
-    return TRUE;
+    switch (aiAlgid)
+    {
+        case CALG_MD2:
+        case CALG_MD4:
+        case CALG_MD5:
+        case CALG_SHA:
+            *pDestHashContext = *pSrcHashContext;
+            return TRUE;
+        default:
+            return !BCryptDuplicateHash(pSrcHashContext->bcrypt_hash, &pDestHashContext->bcrypt_hash, NULL, 0, 0);
+    }
 }
 
 BOOL new_key_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen) 

include/bcrypt.h

@@ -113,5 +113,6 @@ NTSTATUS WINAPI BCryptHash(BCRYPT_ALG_HANDLE, PUCHAR, ULONG, PUCHAR, ULONG, PUCH
 NTSTATUS WINAPI BCryptHashData(BCRYPT_HASH_HANDLE, PUCHAR, ULONG, ULONG);
 NTSTATUS WINAPI BCryptOpenAlgorithmProvider(BCRYPT_ALG_HANDLE *, LPCWSTR, LPCWSTR, ULONG);
 NTSTATUS WINAPI BCryptSetProperty(BCRYPT_HANDLE, LPCWSTR, PUCHAR, ULONG, ULONG);
+NTSTATUS WINAPI BCryptDuplicateHash(BCRYPT_HASH_HANDLE, BCRYPT_HASH_HANDLE *, UCHAR *, ULONG, ULONG);
 
 #endif  /* __WINE_BCRYPT_H */