Coverity fix in some crypto/asn1 code

[openssl.git] / crypto / asn1 / a_digest.c

diff --git a/crypto/asn1/a_digest.c b/crypto/asn1/a_digest.c
index f4cc1f2e0eaa52ff1582400b1c0ac4720439ddfd..cc3532ea7df2ffc39a28117c93a1fd60a72f7168 100644 (file)
--- a/crypto/asn1/a_digest.c
+++ b/crypto/asn1/a_digest.c
@@ -23,18 +23,22 @@
 int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,
                 unsigned char *md, unsigned int *len)
 {
-    int i;
+    int inl;
     unsigned char *str, *p;
 
-    i = i2d(data, NULL);
-    if ((str = OPENSSL_malloc(i)) == NULL) {
+    inl = i2d(data, NULL);
+    if (inl <= 0) {
+        ASN1err(ASN1_F_ASN1_DIGEST, ERR_R_INTERNAL_ERROR);
+        return 0;
+    }
+    if ((str = OPENSSL_malloc(inl)) == NULL) {
         ASN1err(ASN1_F_ASN1_DIGEST, ERR_R_MALLOC_FAILURE);
         return 0;
     }
     p = str;
     i2d(data, &p);
 
-    if (!EVP_Digest(str, i, md, len, type, NULL)) {
+    if (!EVP_Digest(str, inl, md, len, type, NULL)) {
         OPENSSL_free(str);
         return 0;
     }