1 files changed, 24 insertions, 13 deletions
diff --git a/Cryptlib/OpenSSL/crypto/buffer/buffer.c b/Cryptlib/OpenSSL/crypto/buffer/buffer.c
index f59849f3..eff3e081 100644
--- a/Cryptlib/OpenSSL/crypto/buffer/buffer.c
+++ b/Cryptlib/OpenSSL/crypto/buffer/buffer.c
@@ -88,21 +88,17 @@ void BUF_MEM_free(BUF_MEM *a)
         return;
 
     if (a->data != NULL) {
-        memset(a->data, 0, (unsigned int)a->max);
+        OPENSSL_cleanse(a->data, a->max);
         OPENSSL_free(a->data);
     }
     OPENSSL_free(a);
 }
 
-int BUF_MEM_grow(BUF_MEM *str, int len)
+int BUF_MEM_grow(BUF_MEM *str, size_t len)
 {
     char *ret;
-    unsigned int n;
+    size_t n;
 
-    if (len < 0) {
-        BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE);
-        return 0;
-    }
     if (str->length >= len) {
         str->length = len;
         return (len);
@@ -134,15 +130,11 @@ int BUF_MEM_grow(BUF_MEM *str, int len)
     return (len);
 }
 
-int BUF_MEM_grow_clean(BUF_MEM *str, int len)
+int BUF_MEM_grow_clean(BUF_MEM *str, size_t len)
 {
     char *ret;
-    unsigned int n;
+    size_t n;
 
-    if (len < 0) {
-        BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE);
-        return 0;
-    }
     if (str->length >= len) {
         memset(&str->data[len], 0, str->length - len);
         str->length = len;
@@ -174,3 +166,22 @@ int BUF_MEM_grow_clean(BUF_MEM *str, int len)
     }
     return (len);
 }
+
+void BUF_reverse(unsigned char *out, const unsigned char *in, size_t size)
+{
+    size_t i;
+    if (in) {
+        out += size - 1;
+        for (i = 0; i < size; i++)
+            *out-- = *in++;
+    } else {
+        unsigned char *q;
+        char c;
+        q = out + size - 1;
+        for (i = 0; i < size / 2; i++) {
+            c = *q;
+            *q-- = *out;
+            *out++ = c;
+        }
+    }
+}