add casts as in head (required for VC++)

diff --git a/crypto/rsa/rsa_oaep.c b/crypto/rsa/rsa_oaep.c
index 4f0bbab3860420177afd49b56cb57bbeae2b7eb0..742b3a1c9428473061677904c34c93ebd1890d43 100644 (file)
--- a/crypto/rsa/rsa_oaep.c
+++ b/crypto/rsa/rsa_oaep.c
@@ -178,8 +178,10 @@ int MGF1(unsigned char *mask, long len, unsigned char *seed, long seedlen)
 
        for (i = 0; outlen < len; i++)
                {
-               cnt[0] = (i >> 24) & 255, cnt[1] = (i >> 16) & 255,
-                       cnt[2] = (i >> 8) & 255, cnt[3] = i & 255;
+               cnt[0] = (unsigned char)((i >> 24) & 255);
+               cnt[1] = (unsigned char)((i >> 16) & 255);
+               cnt[2] = (unsigned char)((i >> 8)) & 255;
+               cnt[3] = (unsigned char)(i & 255);
                SHA1_Init(&c);
                SHA1_Update(&c, seed, seedlen);
                SHA1_Update(&c, cnt, 4);