From 1603aa242f7e866d3112abbdd7ab9f863a4d107e Mon Sep 17 00:00:00 2001
From: Ale Buzz <alebuttazzo@hotmail.it>
Date: Sat, 15 Feb 2025 16:02:38 +0100
Subject: [PATCH 1/3] Added methods to return directly UNSIGNED LONG TOTP

---
 src/TOTP.cpp | 18 ++++++++++++++++--
 src/TOTP.h   |  4 +++-
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/TOTP.cpp b/src/TOTP.cpp
index 4dc902f..a311926 100644
--- a/src/TOTP.cpp
+++ b/src/TOTP.cpp
@@ -30,8 +30,16 @@ char* TOTP::getCode(long timeStamp) {
 	return getCodeFromSteps(steps);
 }
 
-// Generate a code, using the number of steps provided
-char* TOTP::getCodeFromSteps(long steps) {
+unsigned long TOTP::getIntCode(long timeStamp) {
+	long steps = timeStamp / _timeStep;
+	return getIntCodeFromSteps(steps);
+}
+
+
+uint16_t getCodeFromSteps(long steps);
+
+// Generate a code (integer), using the number of steps provided
+uint16_t TOTP::getIntCodeFromSteps(long steps) {
 	
 	// STEP 0, map the number of steps in a 8-bytes array (counter value)
 	_byteArray[0] = 0x00;
@@ -60,6 +68,12 @@ char* TOTP::getCodeFromSteps(long steps) {
 	_truncatedHash &= 0x7FFFFFFF;
 	_truncatedHash %= 1000000;
 	
+	return (unsigned long)_truncatedHash;
+}
+
+// Generate a code, using the number of steps provided
+char* TOTP::getCodeFromSteps(long steps) {
+	getCodeFromSteps(steps);
 	// convert the value in string, with leading zeroes
 	sprintf(_code, "%06ld", _truncatedHash);
 	return _code;
diff --git a/src/TOTP.h b/src/TOTP.h
index a69e3df..db077ad 100644
--- a/src/TOTP.h
+++ b/src/TOTP.h
@@ -16,7 +16,9 @@ class TOTP {
 		TOTP(uint8_t* hmacKey, int keyLength);
 		TOTP(uint8_t* hmacKey, int keyLength, int timeStep);
 		char* getCode(long timeStamp);
+		unsigned long getIntCode(long timeStamp);
 		char* getCodeFromSteps(long steps);
+		unsigned long getIntCodeFromSteps(long steps);
 	
 	private:
 
@@ -26,7 +28,7 @@ class TOTP {
 		uint8_t _byteArray[8];
 		uint8_t* _hash;
 		int _offset;
-		long _truncatedHash;
+		unsigned long _truncatedHash;
 		char _code[7];
 };
 

From f1bc9ff2a3ea310d98c082f60816f6046d1d7ee5 Mon Sep 17 00:00:00 2001
From: Ale Buzz <alebuttazzo@hotmail.it>
Date: Sat, 15 Feb 2025 16:02:38 +0100
Subject: [PATCH 2/3] Errata Corrige

---
 src/TOTP.cpp | 15 +++++++++++++--
 src/TOTP.h   |  4 +++-
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/TOTP.cpp b/src/TOTP.cpp
index 4dc902f..364468a 100644
--- a/src/TOTP.cpp
+++ b/src/TOTP.cpp
@@ -30,8 +30,13 @@ char* TOTP::getCode(long timeStamp) {
 	return getCodeFromSteps(steps);
 }
 
-// Generate a code, using the number of steps provided
-char* TOTP::getCodeFromSteps(long steps) {
+unsigned long TOTP::getIntCode(long timeStamp) {
+	long steps = timeStamp / _timeStep;
+	return getIntCodeFromSteps(steps);
+}
+
+// Generate a code (integer), using the number of steps provided
+unsigned long TOTP::getIntCodeFromSteps(long steps) {
 	
 	// STEP 0, map the number of steps in a 8-bytes array (counter value)
 	_byteArray[0] = 0x00;
@@ -60,6 +65,12 @@ char* TOTP::getCodeFromSteps(long steps) {
 	_truncatedHash &= 0x7FFFFFFF;
 	_truncatedHash %= 1000000;
 	
+	return (unsigned long)_truncatedHash;
+}
+
+// Generate a code, using the number of steps provided
+char* TOTP::getCodeFromSteps(long steps) {
+	getCodeFromSteps(steps);
 	// convert the value in string, with leading zeroes
 	sprintf(_code, "%06ld", _truncatedHash);
 	return _code;
diff --git a/src/TOTP.h b/src/TOTP.h
index a69e3df..db077ad 100644
--- a/src/TOTP.h
+++ b/src/TOTP.h
@@ -16,7 +16,9 @@ class TOTP {
 		TOTP(uint8_t* hmacKey, int keyLength);
 		TOTP(uint8_t* hmacKey, int keyLength, int timeStep);
 		char* getCode(long timeStamp);
+		unsigned long getIntCode(long timeStamp);
 		char* getCodeFromSteps(long steps);
+		unsigned long getIntCodeFromSteps(long steps);
 	
 	private:
 
@@ -26,7 +28,7 @@ class TOTP {
 		uint8_t _byteArray[8];
 		uint8_t* _hash;
 		int _offset;
-		long _truncatedHash;
+		unsigned long _truncatedHash;
 		char _code[7];
 };
 

From bbdb3dfcb7a03d7cc305eba0d5cf1a12ed859262 Mon Sep 17 00:00:00 2001
From: Ale Buzz <alebuttazzo@hotmail.it>
Date: Sat, 15 Feb 2025 16:16:23 +0100
Subject: [PATCH 3/3] Correction

---
 src/TOTP.cpp | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/src/TOTP.cpp b/src/TOTP.cpp
index dd9a38f..d766ef0 100644
--- a/src/TOTP.cpp
+++ b/src/TOTP.cpp
@@ -67,12 +67,6 @@ unsigned long TOTP::getIntCodeFromSteps(long steps) {
 	return _truncatedHash;
 }
 
-// Generate a code, using the number of steps provided
-char* TOTP::getCodeFromSteps(long steps) {
-	getCodeFromSteps(steps);
-	return (unsigned long)_truncatedHash;
-}
-
 // Generate a code, using the number of steps provided
 char* TOTP::getCodeFromSteps(long steps) {
 	getCodeFromSteps(steps);