add LTC_OID_MAX_STRLEN

Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>

Author: sjaeckel

src/headers/tomcrypt_private.h

@@ -9,11 +9,14 @@
 
 #define LTC_PAD_MASK       (0xF000U)
 
+#define LTC_OID_MAX_STRLEN 256
+
 /*
  * Internal Enums
  */
 
 enum ltc_oid_id {
+   LTC_OID_UNDEF,
    LTC_OID_RSA,
    LTC_OID_DSA,
    LTC_OID_EC,

src/pk/asn1/oid/pk_oid_cmp.c

@@ -11,7 +11,7 @@
 int pk_oid_cmp_with_ulong(const char *o1, const unsigned long *o2, unsigned long o2size)
 {
    unsigned long i;
-   char tmp[256] = { 0 };
+   char tmp[LTC_OID_MAX_STRLEN] = { 0 };
    int err;
 
    if (o1 == NULL || o2 == NULL) return CRYPT_ERROR;

src/pk/asn1/oid/pk_oid_str.c

@@ -46,7 +46,7 @@ int pk_oid_num_to_str(const unsigned long *oid, unsigned long oidlen, char *OID,
 {
    int i;
    unsigned long j, k;
-   char tmp[256] = { 0 };
+   char tmp[LTC_OID_MAX_STRLEN] = { 0 };
 
    LTC_ARGCHK(oid != NULL);
    LTC_ARGCHK(oidlen < INT_MAX);