[PATCH 6/7] bcrypt: Reject DH keys smaller than 512 bits.

[Hans Leidekker]

From: Hans Leidekker

---
 dlls/bcrypt/bcrypt_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/bcrypt/bcrypt_main.c b/dlls/bcrypt/bcrypt_main.c
index 274bb27d9e8..5bac53657c1 100644
--- a/dlls/bcrypt/bcrypt_main.c
+++ b/dlls/bcrypt/bcrypt_main.c
@@ -1210,6 +1210,8 @@ static NTSTATUS key_asymmetric_create( enum alg_id alg_id, ULONG bitlen, struct
         return STATUS_NOT_IMPLEMENTED;
     }

+    if (alg_id == ALG_ID_DH && bitlen < 512) return STATUS_INVALID_PARAMETER;
+
     if (!(key = calloc( 1, sizeof(*key) ))) return STATUS_NO_MEMORY;
     key->hdr.magic  = MAGIC_KEY;
     key->alg_id     = alg_id;