Squashed commit of the following:v0.1.2

commit 1c26ef86a04690120f4f752c7c5018a570ec5880
Author: vnugent <public@vaughnnugent.com>
Date:   Wed May 29 13:34:20 2024 -0400

    missed extra argument

commit 88c9095743a12cf8fc1793c607ba3a1e4fa86483
Author: vnugent <public@vaughnnugent.com>
Date:   Wed May 29 13:25:51 2024 -0400

    refactor!: return NC_SUCCESS when validating secret key

commit 718be80a4810b9352de7eb0707da54020aa6b649
Author: vnugent <public@vaughnnugent.com>
Date:   Mon May 27 14:52:41 2024 -0400

    fix: Properly build mbedtls & cmake fixes

commit a8a6efb2319f739e5faae550561dc27d9dd1e88d
Author: vnugent <public@vaughnnugent.com>
Date:   Sun May 26 17:39:40 2024 -0400

    chore: Update libs, reorder files, internalize private headers

commit 72e1b7be4031e2fd4d258fcf434ad049c0029201
Author: vnugent <public@vaughnnugent.com>
Date:   Sun May 26 13:39:08 2024 -0400

    fix: Add c++ extern prototypes in noscrypt.h

commit aeaac8d328b75911541be64d6f09d58fca294a08
Author: vnugent <public@vaughnnugent.com>
Date:   Sun May 26 11:47:17 2024 -0400

    refactor: Dep update, openssl chacha20 added

commit 86b02540cce6015cfe4a2a56499a9a2f45d4e368
Author: vnugent <public@vaughnnugent.com>
Date:   Sat May 18 12:24:17 2024 -0400

    refactor: Remove NCContext structure definition

commit d09d9330415d463ca19be9394b02ce11b3366f7e
Author: vnugent <public@vaughnnugent.com>
Date:   Mon May 13 22:33:50 2024 -0400

    fix: update mbedtls inline issue includes

commit 7838cb4bb15d4f453f92f56ece75e2b03986fe42
Author: vnugent <public@vaughnnugent.com>
Date:   Mon May 13 22:29:16 2024 -0400

    fix: force fPIC for secp256k1 targets

commit d76f7708bc6ae81a638ca708230ac9153ac754e2
Merge: aa8033d a526139
Author: vnugent <public@vaughnnugent.com>
Date:   Sun May 12 00:37:01 2024 -0400

    Merge branch 'master' into develop

commit aa8033d4dbfebeb72b6fd7a0cd218ebde0eb54dd
Author: vnugent <public@vaughnnugent.com>
Date:   Sun May 12 00:34:20 2024 -0400

    Final overview and test before tag

commit 4e3ead2cf1d3068e77f0959dfdc17e20e9102a0f
Merge: 2cee801 872c49d
Author: vnugent <public@vaughnnugent.com>
Date:   Mon May 6 22:08:09 2024 -0400

    Merge branch 'master' into develop

commit 2cee801979bfbcb3b0e53f592ce8c779b57cb679
Author: vnugent <public@vaughnnugent.com>
Date:   Mon May 6 22:02:39 2024 -0400

    Ensure static and dynamic libs get same args

commit f533694023133552d0d42933d779c95a5854343f
Author: vnugent <public@vaughnnugent.com>
Date:   Mon May 6 21:50:29 2024 -0400

    feat: CMake install & fetch-content test & updates

commit 940ff20348b13d0bc30d9e9f4289dd6de20b16ba
Author: vnugent <public@vaughnnugent.com>
Date:   Sun May 5 14:07:28 2024 -0400

    codeberg readonly push

commit b34ed055c0b7d143561ce8798e0a95313b9224bd
Merge: 0a40e20 e737556
Author: vnugent <public@vaughnnugent.com>
Date:   Sat May 4 14:06:45 2024 -0400

    Merge branch 'master' into develop

commit 0a40e209d03e8ff9b6f81cd5969d3e845c633bfc
Author: vnugent <public@vaughnnugent.com>
Date:   Sat May 4 13:55:19 2024 -0400

    ci: Force disable testing for win ci builds

commit 55fae189fffc86f07a3448370f0a746670819712
Author: vnugent <public@vaughnnugent.com>
Date:   Thu May 2 21:54:35 2024 -0400

    feat: Working and tested openssl impl & defaults

commit 6ff8bb11774c51fd341b7699a3938fd894995fbf
Author: vnugent <public@vaughnnugent.com>
Date:   Thu Apr 25 17:45:42 2024 -0400

    refactor: Finish support and testing for mbedtls

commit 7cb7a93de4f6f5e741bc5129e3d928e44f050930
Author: vnugent <public@vaughnnugent.com>
Date:   Tue Apr 23 18:19:31 2024 -0400

    refactor!: MbedTLS on Windows, switch to uint32

commit 30e8dda6cbea86bdee6d5dfe48514385d3b9f81b
Author: vnugent <public@vaughnnugent.com>
Date:   Tue Apr 23 14:48:05 2024 -0400

    refactor: Crypto dep redesign working on Windows

commit d09c6c1bd5da3e2d79351daeba304ca99976a726
Author: vnugent <public@vaughnnugent.com>
Date:   Thu Apr 18 00:28:51 2024 -0400

    refactor!: Pushing what I have to dev

commit 54e06ada7d624ed0d28c6a6db04a149708841bf8
Author: vnugent <public@vaughnnugent.com>
Date:   Sat Apr 13 01:24:00 2024 -0400

    fix: convert constants to hex, inline macro, ParseErrorCode

commit 4215e3100d9a0d23119080d09638fa5b60d0c6d4
Merge: d3328f4 7485aa5
Author: vnugent <public@vaughnnugent.com>
Date:   Wed Apr 3 18:26:30 2024 -0400

    Merge branch 'master' into develop

commit d3328f4152b22b28f24c43dda62464287f1efff5
Author: vnugent <public@vaughnnugent.com>
Date:   Wed Apr 3 18:22:56 2024 -0400

    build: Included dependency and versions in client builds

commit b11bc0bac955fd5c6db65f0da48456bf5e748805
Author: vnugent <public@vaughnnugent.com>
Date:   Wed Apr 3 18:10:08 2024 -0400

    fix: Fix c89 compatabilty comments and struct assignment

commit 9915bd41799a72413e6b400e150aa9f5fa797e25
Merge: 8e3d6ea 5184d7d
Author: vnugent <public@vaughnnugent.com>
Date:   Sat Mar 30 09:57:30 2024 -0400

    Merge branch 'master' into develop

commit 8e3d6ea5e3c83fe42cb904b6ccc4fe2b73f76aae
Author: vnugent <public@vaughnnugent.com>
Date:   Sat Mar 30 09:52:55 2024 -0400

    refactor!: Some api (struct) changes and updated tests

commit e88e8420520204e20802516f01d4488bb0b1d6ea
Merge: 490dfee 21f6c0a
Author: vnugent <public@vaughnnugent.com>
Date:   Sun Mar 3 15:02:34 2024 -0500

    Merge branch 'master' into develop

commit 490dfee4ef22479009627435c6ad728c3cbbab54
Author: vnugent <public@vaughnnugent.com>
Date:   Sun Mar 3 14:59:25 2024 -0500

    test: #3 tests for encryption/description and Macs

commit efa97490b7ed47f4e2f05bee52e2b33e14e439e6
Merge: 1b84e3c 120022a
Author: vnugent <public@vaughnnugent.com>
Date:   Sun Mar 3 14:55:48 2024 -0500

    merge master

commit 1b84e3c7c2e55b1ff9ffdd09b66873e11c131441
Author: vnugent <public@vaughnnugent.com>
Date:   Sat Mar 2 22:57:36 2024 -0500

    fix: #2 constent usage of sizeof() operator on struct types

commit 9de5a214c66adea0ef2d0bac63c59449de202a88
Author: vnugent <public@vaughnnugent.com>
Date:   Fri Mar 1 14:30:36 2024 -0500

    perf: avoid nc_key struct copy, cast and verify instead

commit b917b761120ed684af28d0707673ffadcf14b8fe
Author: vnugent <public@vaughnnugent.com>
Date:   Mon Feb 12 22:06:50 2024 -0500

    fix: found the constant time memcompare function

commit 9f85fff3b9f25da7410569ea94f994b88feb3910
Author: vnugent <public@vaughnnugent.com>
Date:   Fri Feb 9 22:48:35 2024 -0500

    feat: added/update MAC functions to sign or verify nip44 payload

commit aa5113741bb419b02d6ea416bba571fa3d65db46
Author: vnugent <public@vaughnnugent.com>
Date:   Wed Feb 7 01:37:53 2024 -0500

    add missing hmac-key output buffer

commit 55f47d22cc9ce4d1e22b70814d608c7ef3b1bbc9
Author: vnugent <public@vaughnnugent.com>
Date:   Sun Feb 4 21:08:13 2024 -0500

    simple bug fixes, and public api argument validation tests

commit 73c5a713fb164ae8b4ac8a891a8020e08eae0a3b
Author: vnugent <public@vaughnnugent.com>
Date:   Fri Feb 2 23:05:48 2024 -0500

    update api to return secpvalidate return code instead of internal return codes

commit 06c73004e1a39a7ea4ea3a89c22dee0f66adb236
Author: vnugent <public@vaughnnugent.com>
Date:   Fri Feb 2 19:25:17 2024 -0500

    change to lgpl license

commit 6e79fdb3b6b6739fc7797d47e55a7691306cf736
Author: vnugent <public@vaughnnugent.com>
Date:   Wed Jan 31 21:30:49 2024 -0500

    move validation macros, and optionally disable them

commit ac1e58837f1ba687939f78b5c03cadd346c10ddd
Author: vnugent <public@vaughnnugent.com>
Date:   Tue Jan 30 12:25:05 2024 -0500

    couple more tests, renable range checks, set flags for all projects

4 files changed, 20 insertions, 221 deletions

diff --git a/include/hkdf.h b/include/hkdf.h
deleted file mode 100644
index 460e203..0000000
--- a/include/hkdf.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
-* Copyright (c) 2024 Vaughn Nugent
-*
-* Package: noscrypt
-* File: hkdf.h
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU Lesser General Public License
-* as published by the Free Software Foundation; either version 2.1
-* of the License, or  (at your option) any later version.
-*
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-* Lesser General Public License for more details.
-*
-* You should have received a copy of the GNU Lesser General Public License
-* along with noscrypt. If not, see http://www.gnu.org/licenses/.
-*/
-
-#pragma once
-
-#ifndef _NC_HKDF_H
-#define _NC_HKDF_H
-
-#include "nc-util.h"
-#include "nc-crypto.h"
-
-/*
-* IMPORTANT:
-*	The HKDF_IN_BUF_SIZE defintion sets the internal stack buffer size to use
-*	during fallback HKDF_Expand operations.
-*
-*	128 bytes should be more than enough for most use cases, without going 
-*	overboard. Could be dialed in better for specific use cases later.
-*/
-
-#ifndef HKDF_IN_BUF_SIZE
-	#define HKDF_IN_BUF_SIZE	0x80	
-#endif
-
-
-/* typedefs for hdkf callback functions */
-
-typedef cstatus_t (*hmac_hash_func)(void* ctx, const cspan_t* data);
-typedef cstatus_t (*hmac_finish_fn)(void* ctx, sha256_t hmacOut32);
-
-struct nc_hkdf_fn_cb_struct
-{
-	hmac_hash_func update;
-	hmac_finish_fn finish;
-};
-
-cstatus_t hkdfExpandProcess(
-	const struct nc_hkdf_fn_cb_struct* handler,
-	void* ctx,
-	const cspan_t* info,
-	span_t* okm
-);
-
-#endif /* !_NC_HKDF_H */
diff --git a/include/nc-crypto.h b/include/nc-crypto.h
deleted file mode 100644
index f04ebe0..0000000
--- a/include/nc-crypto.h
+++ /dev/null
@@ -1,59 +0,0 @@
-
-/*
-* Copyright (c) 2024 Vaughn Nugent
-*
-* Package: noscrypt
-* File: nc-crypto.h
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU Lesser General Public License
-* as published by the Free Software Foundation; either version 2.1
-* of the License, or  (at your option) any later version.
-*
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-* Lesser General Public License for more details.
-*
-* You should have received a copy of the GNU Lesser General Public License
-* along with noscrypt. If not, see http://www.gnu.org/licenses/.
-*/
-
-#pragma once
-
-#ifndef _NC_CRYPTO_H
-#define _NC_CRYPTO_H
-
-#include <stdint.h>
-
-#define CHACHA_NONCE_SIZE		0x0cu		/* Size of 12 is set by the cipher spec */
-#define CHACHA_KEY_SIZE			0x20u		/* Size of 32 is set by the cipher spec */
-#define SHA256_DIGEST_SIZE		0x20u		/* Size of 32 is set by the cipher spec */
-
-typedef uint8_t cstatus_t;
-#define CSTATUS_OK				((cstatus_t)0x01u)
-#define CSTATUS_FAIL			((cstatus_t)0x00u)
-
-typedef uint8_t sha256_t[SHA256_DIGEST_SIZE];
-
-uint32_t ncCryptoFixedTimeComp(const uint8_t* a, const uint8_t* b, uint32_t size);
-
-void ncCryptoSecureZero(void* ptr, uint32_t size);
-
-cstatus_t ncCryptoDigestSha256(const cspan_t* data, sha256_t digestOut32);
-
-cstatus_t ncCryptoHmacSha256(const cspan_t* key, const cspan_t* data, sha256_t hmacOut32);
-
-cstatus_t ncCryptoSha256HkdfExpand(const cspan_t* prk, const cspan_t* info, span_t* okm);
-
-cstatus_t ncCryptoSha256HkdfExtract(const cspan_t* salt, const cspan_t* ikm, sha256_t prk);
-
-cstatus_t ncCryptoChacha20(
-	const uint8_t key[CHACHA_KEY_SIZE],
-	const uint8_t nonce[CHACHA_NONCE_SIZE],
-	const uint8_t* input,
-	uint8_t* output,
-	uint32_t dataSize
-);
-
-#endif /* !_NC_CRYPTO_H */
diff --git a/include/nc-util.h b/include/nc-util.h
deleted file mode 100644
index 8fb74ff..0000000
--- a/include/nc-util.h
+++ /dev/null
@@ -1,95 +0,0 @@
-
-/*
-* Copyright (c) 2024 Vaughn Nugent
-*
-* Package: noscrypt
-* File: nc-util.h
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU Lesser General Public License
-* as published by the Free Software Foundation; either version 2.1
-* of the License, or  (at your option) any later version.
-*
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-* Lesser General Public License for more details.
-*
-* You should have received a copy of the GNU Lesser General Public License
-* along with noscrypt. If not, see http://www.gnu.org/licenses/.
-*/
-
-#pragma once
-
-#ifndef _NC_UTIL_H
-#define _NC_UTIL_H
-
-#include "platform.h"
-
-/* NULL */
-#ifndef NULL
-	#define NULL ((void*)0)
-#endif /*  !NULL */
-
-#ifdef DEBUG
-	/* Must include assert.h for assertions */
-	#include <assert.h> 
-	#define DEBUG_ASSERT(x) assert(x);
-	#define DEBUG_ASSERT2(x, message) assert(x && message);	
-
-	/*
-	* Compiler enabled static assertion keywords are 
-	* only available in C11 and later. Later versions 
-	* have macros built-in from assert.h so we can use
-	* the static_assert macro directly.
-	* 
-	* Static assertions are only used for testing such as 
-	* sanity checks and this library targets the c89 standard
-	* so static_assret very likely will not be available. 
-	*/
-	#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
-		#define STATIC_ASSERT(x, m) static_assert(x, m)
-	#elif !defined(STATIC_ASSERT)
-		#define STATIC_ASSERT(x, m)
-		#pragma message("Static assertions are not supported by this language version")
-	#endif
-
-#else
-	#define DEBUG_ASSERT(x)
-	#define DEBUG_ASSERT2(x, message)
-	#define STATIC_ASSERT(x, m)
-#endif
-
-#include <stdint.h>
-
-#if SIZE_MAX < UINT32_MAX
-	#define _overflow_check(x) if(x > SIZE_MAX) return CSTATUS_FAIL;
-#else
-	#define _overflow_check(x)
-#endif
-
-typedef struct memory_span_struct
-{
-	uint8_t* data;
-	uint32_t size;
-} span_t;
-
-typedef struct read_only_memory_span_struct
-{
-	const uint8_t* data;
-	uint32_t size;
-} cspan_t;
-
-static _nc_fn_inline void ncSpanInitC(cspan_t* span, const uint8_t* data, uint32_t size)
-{
-	span->data = data;
-	span->size = size;
-}
-
-static _nc_fn_inline void ncSpanInit(span_t* span, uint8_t* data, uint32_t size)
-{
-	span->data = data;
-	span->size = size;
-}
-
-#endif /* !_NC_UTIL_H */
\ No newline at end of file
diff --git a/include/noscrypt.h b/include/noscrypt.h
index ca958a0..cdc74fe 100644
--- a/include/noscrypt.h
+++ b/include/noscrypt.h
@@ -29,6 +29,10 @@
 #ifndef NOSCRYPT_H
 #define NOSCRYPT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
 #include <stdint.h>
 #include <stddef.h>
 #include "platform.h"
@@ -135,11 +139,7 @@ typedef struct xonly_pubkey_struct {
 /*
 	An opaque full library context object
 */
-typedef struct ctx_struct {
-
-	void* secpCtx;
-
-} NCContext;
+typedef struct nc_ctx_struct NCContext;
 
 /*
 * The encryption arguments structure. This structure is used to pass 
@@ -253,6 +253,16 @@ for dynamic allocation when context size structure is not known.
 * @return The size of the context struct in bytes
 */
 NC_EXPORT uint32_t NC_CC NCGetContextStructSize(void);
+
+/*
+* Obtains a pointer to the process-wide shared structure to be 
+* used in single-threaded, resource constrained systems. NOTE:
+* this structure is not initalized and still requires calling
+* NCInitContext() before use.
+* @return The address of the process-wide, shared structure.
+*/
+NC_EXPORT NCContext* NC_CC NCGetSharedContext(void);
+
 /*
 * Initializes a context struct with the given entropy
 * @param ctx A pointer to the context structure to initialize
@@ -304,7 +314,7 @@ NC_EXPORT NCResult NC_CC NCGetPublicKey(
 is functionally the same as calling secp256k1_ec_seckey_verify. 
 * @param ctx A pointer to the existing library context
 * @param sk A pointer to the secret key to verify 
-* @return 1 if the secret key is valid, 0 if it is not, otherwise an error code
+* @return NC_SUCCESS if the secret key is valid, otherwise an error code
 */
 NC_EXPORT NCResult NC_CC NCValidateSecretKey(
 	const NCContext* ctx, 
@@ -568,4 +578,8 @@ NC_EXPORT NCResult NCComputeMac(
 	uint8_t hmacOut[NC_ENCRYPTION_MAC_SIZE]
 );
 
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
 #endif /* !NOSCRYPT_H */