push latest utils and changes

2 files changed, 77 insertions, 1 deletions

diff --git a/include/noscrypt.h b/include/noscrypt.h
index bdfaa9f..8b39f17 100644
--- a/include/noscrypt.h
+++ b/include/noscrypt.h
@@ -228,7 +228,7 @@ NC_EXPORT NCResult NC_CC NCResultWithArgPosition(NCResult err, uint8_t argPositi
 * Parses an error code and returns the error code and the argument position 
 that caused the error.
 * @param result The error code to parse
-* @param argPositionOut A pointer to the argument position to write to
+* @param argPositionOut A pointer to the argument position to write to (optionall, set to NULL of unobserved)
 * @return The error code
 */
 NC_EXPORT int NC_CC NCParseErrorCode(NCResult result, uint8_t* argPositionOut);
diff --git a/include/noscryptutil.h b/include/noscryptutil.h
new file mode 100644
index 0000000..1a98698
--- /dev/null
+++ b/include/noscryptutil.h
@@ -0,0 +1,76 @@
+/*
+* Copyright (c) 2024 Vaughn Nugent
+*
+* Package: noscrypt
+* File: noscryptutil.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/.
+*/
+
+/*
+* noscrypt is a an open-source, strict C89 library that performs the basic
+* cryptographic operations found in the Nostr protocol. It is designed to be
+* portable and easy to use in any C89 compatible environment. It is also designed
+*/
+
+#pragma once
+
+#ifndef NOSCRYPTUTIL_H
+#define NOSCRYPTUTIL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+#include <stdlib.h>
+#include "noscrypt.h"
+
+#define E_OUT_OF_MEMORY		-10
+
+typedef struct nc_util_enc_struct NCUtilEncryptionContext;
+
+NC_EXPORT NCResult NC_CC NCUtilGetEncryptionPaddedSize(uint32_t encVersion, int32_t plaintextSize);
+
+NC_EXPORT NCResult NC_CC NCUtilGetEncryptionBufferSize(uint32_t encVersion, int32_t plaintextSize);
+
+NC_EXPORT NCUtilEncryptionContext* NC_CC NCUtilAllocEncryptionContext(uint32_t encVersion);
+
+NC_EXPORT NCResult NC_CC NCUtilInitEncryptionContext(
+	NCUtilEncryptionContext* encCtx,
+	const uint8_t* plainText,
+	uint32_t plainTextSize
+);
+
+NC_EXPORT void NC_CC NCUtilFreeEncryptionContext(NCUtilEncryptionContext* encCtx);
+
+NC_EXPORT NCResult NC_CC NCUtilGetEncryptedSize(const NCUtilEncryptionContext* encCtx);
+
+NC_EXPORT NCResult NC_CC NCUtilReadEncryptedData(
+	const NCUtilEncryptionContext* encCtx,
+	uint8_t* output,
+	uint32_t outputSize
+);
+
+NC_EXPORT NCResult NCUtilSetEncryptionProperty(
+	NCUtilEncryptionContext* ctx,
+	uint32_t property,
+	uint8_t* value,
+	uint32_t valueLen
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NOSCRYPTUTIL_H */
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