diff --git a/crypto/asn1/a_mbstr.c b/crypto/asn1/a_mbstr.c
index 867f860752bfcd17dfa024930fe300caff9f5958..42f5d3b01e2f89b63985117ebbcd4a1fb268b9b6 100644
--- a/crypto/asn1/a_mbstr.c
+++ b/crypto/asn1/a_mbstr.c
@@ -258,8 +258,8 @@ static int traverse_string(const unsigned char *p, int len, int inform,
 			value |= *p++;
 			len -= 2;
 		} else if(inform == MBSTRING_UNIV) {
-			value = *p++ << 24;
-			value |= *p++ << 16;
+			value = ((unsigned long)*p++) << 24;
+			value |= ((unsigned long)*p++) << 16;
 			value |= *p++ << 8;
 			value |= *p++;
 			len -= 4;
diff --git a/crypto/asn1/a_utf8.c b/crypto/asn1/a_utf8.c
index b5125af2243e67d81ab1306b7c99abef805f35ba..854278f136e75977ac888d7e392224ca9415ca6a 100644
--- a/crypto/asn1/a_utf8.c
+++ b/crypto/asn1/a_utf8.c
@@ -133,7 +133,7 @@ int UTF8_getc(const unsigned char *str, int len, unsigned long *val)
 		if( ((p[1] & 0xc0) != 0x80)
 		   || ((p[2] & 0xc0) != 0x80) 
 		   || ((p[3] & 0xc0) != 0x80) ) return -3;
-		value = (*p++ & 0x7) << 18;
+		value = ((unsigned long)(*p++ & 0x7)) << 18;
 		value |= (*p++ & 0x3f) << 12;
 		value |= (*p++ & 0x3f) << 6;
 		value |= *p++ & 0x3f;
@@ -145,9 +145,9 @@ int UTF8_getc(const unsigned char *str, int len, unsigned long *val)
 		   || ((p[2] & 0xc0) != 0x80) 
 		   || ((p[3] & 0xc0) != 0x80) 
 		   || ((p[4] & 0xc0) != 0x80) ) return -3;
-		value = (*p++ & 0x3) << 24;
-		value |= (*p++ & 0x3f) << 18;
-		value |= (*p++ & 0x3f) << 12;
+		value = ((unsigned long)(*p++ & 0x3)) << 24;
+		value |= ((unsigned long)(*p++ & 0x3f)) << 18;
+		value |= ((unsigned long)(*p++ & 0x3f)) << 12;
 		value |= (*p++ & 0x3f) << 6;
 		value |= *p++ & 0x3f;
 		if(value < 0x200000) return -4;
@@ -159,10 +159,10 @@ int UTF8_getc(const unsigned char *str, int len, unsigned long *val)
 		   || ((p[3] & 0xc0) != 0x80) 
 		   || ((p[4] & 0xc0) != 0x80) 
 		   || ((p[5] & 0xc0) != 0x80) ) return -3;
-		value = (*p++ & 0x1) << 30;
-		value |= (*p++ & 0x3f) << 24;
-		value |= (*p++ & 0x3f) << 18;
-		value |= (*p++ & 0x3f) << 12;
+		value = ((unsigned long)(*p++ & 0x1)) << 30;
+		value |= ((unsigned long)(*p++ & 0x3f)) << 24;
+		value |= ((unsigned long)(*p++ & 0x3f)) << 18;
+		value |= ((unsigned long)(*p++ & 0x3f)) << 12;
 		value |= (*p++ & 0x3f) << 6;
 		value |= *p++ & 0x3f;
 		if(value < 0x4000000) return -4;