diff --git a/CMakeLists.txt b/CMakeLists.txt
index 24c920f..ce23007 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -83,7 +83,7 @@
 if(NOT COSE_C_INCLUDE_SIGN1)
   add_definitions(-DINCLUDE_SIGN1=0)
 endif()
-if (NOT COSE_C_INCLUDE_COUNTERSIGN)
+if(NOT COSE_C_INCLUDE_COUNTERSIGN)
   add_definitions(-DINCLUDE_COUNTERSIGN=0)
 endif()
 if(COSE_C_USE_CONTEXT)
@@ -98,8 +98,8 @@
 endif()
 
 # Control the order of packages - get the latest not the first
-SET(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
-SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
+set(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
+set(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
 
 ###############################################################################
 # DOCS
@@ -186,7 +186,8 @@
 endif()
 
 if(COSE_C_USE_MBEDTLS)
-  add_definitions(-DUSE_MBED_TLS)
+  add_definitions(-DCOSE_C_USE_MBEDTLS)
+  set(COSE_C_USE_OPENSSL OFF)
 
   if(COSE_C_USE_FIND_PACKAGE)
     find_package(MbedTLS)
@@ -219,6 +220,7 @@
   endif()
 else()
   find_package(OpenSSL REQUIRED)
+  set(COSE_C_USE_OPENSSL ON)
 endif()
 
 ###############################################################################
@@ -272,3 +274,5 @@
 message(STATUS "CLANG_TIDY_EXE:..................${CLANG_TIDY_EXE}")
 message(STATUS "project_cn_cbor_SOURCE_DIR:......${project_cn_cbor_SOURCE_DIR}")
 message(STATUS "project_cn_cbor_BINARY_DIR:......${project_cn_cbor_BINARY_DIR}")
+message(STATUS "project_mbedtls_SOURCE_DIR:......${project_mbedtls_SOURCE_DIR}")
+message(STATUS "project_mbedtls_BINARY_DIR:......${project_mbedtls_BINARY_DIR}")
\ No newline at end of file
diff --git a/include/cose/cose_configure.h b/include/cose/cose_configure.h.in
similarity index 82%
rename from include/cose/cose_configure.h
rename to include/cose/cose_configure.h.in
index 5250faa..5d02d5c 100644
--- a/include/cose/cose_configure.h
+++ b/include/cose/cose_configure.h.in
@@ -4,17 +4,21 @@
 
 #pragma once
 
-#if defined(USE_MBED_TLS)
-#if defined(USE_OPEN_SSL) || defined(USE_BCRYPT)
+#cmakedefine COSE_C_USE_MBEDTLS
+#cmakedefine COSE_C_USE_OPENSSL
+#cmakedefine COSE_C_USE_BCRYPT
+
+#if defined(COSE_C_USE_MBEDTLS)
+#if defined(COSE_C_USE_OPENSSL) || defined(COSE_C_USE_BCRYPT)
 #error Only Define One Crypto Package
 #endif
-#elif defined(USE_BCRYPT)
-#if defined(USE_OPENSSL)
+#elif defined(COSE_C_USE_BCRYPT)
+#if defined(COSE_C_USE_OPENSSL)
 #error Only Define One Crypto Package
 #endif
-#elif !defined(USE_OPEN_SSL)
+#elif !defined(COSE_C_USE_OPENSSL)
 #include <openssl/opensslv.h>
-#define USE_OPEN_SSL
+#define COSE_C_USE_OPENSSL
 #endif
 
 //
@@ -62,20 +66,20 @@
 //  Define which AES CBC-MAC algorithms are to be used
 //
 
-#if !defined(USE_MBED_TLS)
+#if !defined(COSE_C_USE_MBEDTLS)
 
 #define USE_AES_CBC_MAC_128_64
 #define USE_AES_CBC_MAC_128_128
 #define USE_AES_CBC_MAC_256_64
 #define USE_AES_CBC_MAC_256_128
 
-#endif	// !defined(USE_MBED_TLS)
+#endif	// !defined(COSE_C_USE_MBEDTLS)
 
 //
 //  Define which ECDH algorithms are to be used
 //
 
-#if !defined(USE_MBED_TLS)
+#if !defined(COSE_C_USE_MBEDTLS)
 #define USE_ECDH_ES_HKDF_256
 #define USE_ECDH_ES_HKDF_512
 #define USE_ECDH_SS_HKDF_256
@@ -85,9 +89,9 @@
 #define USE_ECDH 1
 #define USE_HKDF_SHA2 1
 #endif
-#endif	// !defined(USE_MBED_TLS)
+#endif	// !defined(COSE_C_USE_MBEDTLS)
 
-#if !defined(USE_MBED_TLS)
+#if !defined(COSE_C_USE_MBEDTLS)
 #define USE_ECDH_ES_A128KW
 #define USE_ECDH_ES_A192KW
 #define USE_ECDH_ES_A256KW
@@ -100,23 +104,23 @@
 #define USE_ECDH 1
 #define USE_HKDF_AES 1
 #endif
-#endif	// !defined(USE_MBED_TLS)
+#endif	// !defined(COSE_C_USE_MBEDTLS)
 
 //
 //  Define which Key Wrap functions are to be used
 //
 
-#if !defined(USE_MBED_TLS)
+#if !defined(COSE_C_USE_MBEDTLS)
 #define USE_AES_KW_128
 #define USE_AES_KW_192
 #define USE_AES_KW_256
-#endif	// !defined(USE_MBED_TLS)
+#endif	// !defined(COSE_C_USE_MBEDTLS)
 
 //
 //  Define which of the DIRECT + KDF algorithms are to be used
 //
 
-#if !defined(USE_MBED_TLS)
+#if !defined(COSE_C_USE_MBEDTLS)
 #define USE_Direct_HKDF_HMAC_SHA_256
 #define USE_Direct_HKDF_HMAC_SHA_512
 #define USE_Direct_HKDF_AES_128
@@ -128,7 +132,7 @@
 #if defined(USE_Direct_HKDF_AES_128) || defined(USE_Direct_KDF_AES_256)
 #define USE_HKDF_AES 1
 #endif
-#endif	// !defined(USE_MBED_TLS)
+#endif	// !defined(COSE_C_USE_MBEDTLS)
 
 //
 //  Define which of the signature algorithms are to be used
@@ -137,7 +141,7 @@
 #define USE_ECDSA_SHA_256
 #define USE_ECDSA_SHA_384
 #define USE_ECDSA_SHA_512
-#if !defined(USE_MBED_TLS)
+#if !defined(COSE_C_USE_MBEDTLS)
 //  MBEDTLS currently supports ECDH for X25519 but not EdDSA
 #if OPENSSL_VERSION_NUMBER > 0x10100000L
 // Requires OPEN SSL 1.1.1 to build
@@ -147,7 +151,7 @@
 #define TOSTRING(x) STRINGIFY(x)
 #pragma message("OPENSSL VERSION IS " OPENSSL_VERSION_TEXT)
 #endif
-#endif	// !defined (USE_MBED_TLS)
+#endif	// !defined (COSE_C_USE_MBEDTLS)
 
 //
 //   Define which COSE objects are included
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1314e10..08b3f71 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -22,6 +22,11 @@
 
 add_library(${PROJECT_NAME})
 
+# some structs look differently depending on the crypto lib used
+# therefore we create the config header file at configure time.
+configure_file(${CMAKE_CURRENT_LIST_DIR}/../include/cose/cose_configure.h.in
+               ${CMAKE_BINARY_DIR}/include/cose/cose_configure.h)
+
 if(COSE_C_USE_MBEDTLS)
   set(cose_crypto mbedtls.c)
 else()
@@ -30,7 +35,7 @@
 
 set(cose_sources
     ${PROJECT_SOURCE_DIR}/include/cose/cose.h
-    ${PROJECT_SOURCE_DIR}/include/cose/cose_configure.h
+    ${CMAKE_BINARY_DIR}/include/cose/cose_configure.h
     crypto.h
     cose_int.h
     crypto.h
@@ -52,7 +57,8 @@
 
 target_include_directories(
   ${PROJECT_NAME}
-  PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include> $<INSTALL_INTERFACE:include>
+  PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include> $<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/include>
+         $<INSTALL_INTERFACE:include>
   PRIVATE ../src)
 target_link_libraries(${PROJECT_NAME} PRIVATE cn-cbor::cn-cbor)
 
@@ -125,3 +131,9 @@
   COMPONENT dev
   FILES_MATCHING
   PATTERN "*.h")
+install(
+  DIRECTORY ${CMAKE_BINARY_DIR}/include/cose
+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+  COMPONENT dev
+  FILES_MATCHING
+  PATTERN "*.h")
diff --git a/src/Sign1.c b/src/Sign1.c
index d9e0568..e5739c5 100644
--- a/src/Sign1.c
+++ b/src/Sign1.c
@@ -1,4 +1,4 @@
-/** \file Sign.c
+/** \file Sign1.c
  * Contains implementation of the functions related to HCOSE_SIGN handle
  * objects.
  */
@@ -12,10 +12,10 @@
 
 #if INCLUDE_SIGN1
 
-bool _COSE_Signer0_sign(COSE_Sign1Message *pSigner,
+bool _COSE_Signer1_sign(COSE_Sign1Message *pSigner,
 	const cn_cbor *pKey,
 	cose_errback *perr);
-bool _COSE_Signer0_validate(COSE_Sign1Message *pSign,
+bool _COSE_Signer1_validate(COSE_Sign1Message *pSign,
 	const cn_cbor *pKey,
 	cose_errback *perr);
 void _COSE_Sign1_Release(COSE_Sign1Message *p);
@@ -237,7 +237,7 @@
 		goto errorReturn;
 	}
 
-	if (!_COSE_Signer0_sign(pMessage, pKey, perr)) {
+	if (!_COSE_Signer1_sign(pMessage, pKey, perr)) {
 		goto errorReturn;
 	}
 
@@ -274,7 +274,7 @@
 	CHECK_CONDITION(cnProtected != NULL && cnProtected->type == CN_CBOR_BYTES,
 		COSE_ERR_INVALID_PARAMETER);
 
-	f = _COSE_Signer0_validate(pSign, pKey, perr);
+	f = _COSE_Signer1_validate(pSign, pKey, perr);
 
 	return f;
 
@@ -405,7 +405,7 @@
 	return false;
 }
 
-bool _COSE_Signer0_sign(COSE_Sign1Message *pSigner,
+bool _COSE_Signer1_sign(COSE_Sign1Message *pSigner,
 	const cn_cbor *pKey,
 	cose_errback *perr)
 {
@@ -501,7 +501,7 @@
 	return f;
 }
 
-bool _COSE_Signer0_validate(COSE_Sign1Message *pSign,
+bool _COSE_Signer1_validate(COSE_Sign1Message *pSign,
 	const cn_cbor *pKey,
 	cose_errback *perr)
 {
diff --git a/src/bcrypt.c b/src/bcrypt.c
index 1b22041..a591b77 100644
--- a/src/bcrypt.c
+++ b/src/bcrypt.c
@@ -3,7 +3,7 @@
 #include "cose_int.h"
 #include "crypto.h"
 
-#if USE_BCRYPT
+#if COSE_C_USE_BCRYPT
 
 #include <Windows.h>
 
@@ -77,4 +77,4 @@
 	return true;
 }
 
-#endif	// USE_BCRYPT
\ No newline at end of file
+#endif	// COSE_C_USE_BCRYPT
\ No newline at end of file
diff --git a/src/mbedtls.c b/src/mbedtls.c
index adf2909..54236cc 100644
--- a/src/mbedtls.c
+++ b/src/mbedtls.c
@@ -9,7 +9,7 @@
 #endif
 #include <stdlib.h>
 
-#ifdef USE_MBED_TLS
+#ifdef COSE_C_USE_MBEDTLS
 
 #include "mbedtls/ccm.h"
 #include "mbedtls/md.h"
@@ -1600,4 +1600,4 @@
 	return fRet;
 }
 #endif	// USE_ECDH
-#endif	// USE_MBED_TLS
+#endif	// COSE_C_USE_MBEDTLS
diff --git a/src/openssl.c b/src/openssl.c
index 5f1c87d..2e66b00 100644
--- a/src/openssl.c
+++ b/src/openssl.c
@@ -7,7 +7,7 @@
 #include <memory.h>
 #include <stdbool.h>
 
-#ifdef USE_OPEN_SSL
+#ifdef COSE_C_USE_OPENSSL
 
 #include <openssl/evp.h>
 #include <openssl/aes.h>
@@ -1779,4 +1779,4 @@
 	return fRet;
 }
 
-#endif	// USE_OPEN_SSL
+#endif	// COSE_C_USE_OPENSSL
diff --git a/test/test.c b/test/test.c
index d2f3c2d..b943227 100644
--- a/test/test.c
+++ b/test/test.c
@@ -21,7 +21,7 @@
 #include "json.h"
 #include "test.h"
 
-#ifdef USE_MBED_TLS
+#ifdef COSE_C_USE_MBEDTLS
 #include "mbedtls/entropy.h"
 #endif
 
@@ -1315,7 +1315,7 @@
 		}
 	}
 
-#ifdef USE_MBED_TLS
+#ifdef COSE_C_USE_MBEDTLS
 	mbedtls_entropy_context entropy;
 	mbedtls_entropy_init(&entropy);
 #endif