Index: generic/tlsDigest.c
==================================================================
--- generic/tlsDigest.c
+++ generic/tlsDigest.c
@@ -15,11 +15,11 @@
 #include <openssl/evp.h>
 #include <openssl/cmac.h>
 #include <openssl/hmac.h>
 
 /* Constants */
-const char *hex = "0123456789ABCDEF";
+const char *hex = "0123456789abcdef";
 
 /* Macros */
 #define BUFFER_SIZE 65536
 #define CHAN_EOF 0x10
 

Index: generic/tlsX509.c
==================================================================
--- generic/tlsX509.c
+++ generic/tlsX509.c
@@ -22,11 +22,11 @@
  */
 int String_to_Hex(unsigned char* input, int ilen, unsigned char *output, int olen) {
     int count = 0;
     unsigned char *iptr = input;
     unsigned char *optr = &output[0];
-    const char *hex = "0123456789ABCDEF";
+    const char *hex = "0123456789abcdef";
 
     for (int i = 0; i < ilen && count < olen - 1; i++, count += 2) {
         *optr++ = hex[(*iptr>>4)&0xF];
         *optr++ = hex[(*iptr++)&0xF];
     }