--- nitrokey-hotp-verification-a/Toolchain-heads.cmake	2018-05-22 09:55:46.907209235 -0700
+++ nitrokey-hotp-verification-b/Toolchain-heads.cmake	2018-05-22 09:55:26.659371966 -0700
@@ -0,0 +1,18 @@
+SET(CMAKE_SYSTEM_NAME Linux)
+SET(CMAKE_SYSTEM_VERSION 1)
+
+# Specify the cross compiler
+SET(CMAKE_C_COMPILER $ENV{INSTALL}/bin/musl-gcc)
+SET(CMAKE_CXX_COMPILER $ENV{INSTALL}/bin/musl-gcc)
+
+# Where is the target environment
+SET(CMAKE_FIND_ROOT_PATH $ENV{INSTALL})
+
+# Search for programs only in the build host directories
+SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# Search for libraries and headers only in the target directories
+SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+
+INCLUDE_DIRECTORIES(hidapi)
--- libremkey-hotp-verification/device.c	2018-06-20 16:13:36.417804210 -0700
+++ libremkey-hotp-verification-b/device.c	2018-06-20 16:14:34.532367723 -0700
@@ -34,7 +34,7 @@
 const unsigned short m_vid = 0x20a0;
 const unsigned short m_pid = 0x4108;
 
-static const int CONNECTION_ATTEMPTS_COUNT = 80;
+static const int CONNECTION_ATTEMPTS_COUNT = 2;
 
 static const int CONNECTION_ATTEMPT_DELAY_MICRO_SECONDS = 1000*1000/2;

--- libremkey-hotp-verification/libremkey_hotp_initialize
+++ libremkey-hotp-verification-b/libremkey_hotp_initialize
@@ -14,7 +14,7 @@ fi
 PIN=$1
 SECRET=$2
 COUNTER=$3
-SECRET_B32=$(echo -n $SECRET | base32)
+SECRET_B32=$(cat $SECRET | base32)
 
 libremkey_hotp_verification set $SECRET_B32 $PIN 
 if [ $? -ne 0 ]; then
@@ -25,7 +25,7 @@ fi
 i=9
 while [ "$i" -lt "$COUNTER" ]; do
   echo "Updating counter to $i"
-  HOTP_CODE=$(echo $SECRET | hotp $i)
+  HOTP_CODE=$(hotp $i < $SECRET)
   libremkey_hotp_verification check $HOTP_CODE > /dev/null
   if [ $? -ne 0 ]; then
     echo "HOTP check failed for counter=$i, code=$HOTP_CODE"
@@ -34,7 +34,7 @@ while [ "$i" -lt "$COUNTER" ]; do
   let "i += 10"
 done
 
-HOTP_CODE=$(echo $SECRET | hotp $COUNTER)
+HOTP_CODE=$(hotp $COUNTER < $SECRET)
 libremkey_hotp_verification check $HOTP_CODE > /dev/null
 if [ $? -ne 0 ]; then
   echo "HOTP check failed for counter=$COUNTER, code=$HOTP_CODE"