diff --git a/lib/libnx/include/nx/AciHeader.h b/lib/libnx/include/nx/AciHeader.h
index 0293081..9cf616e 100644
--- a/lib/libnx/include/nx/AciHeader.h
+++ b/lib/libnx/include/nx/AciHeader.h
@@ -3,6 +3,7 @@
 #include <fnd/types.h>
 #include <fnd/MemoryBlob.h>
 #include <fnd/ISerialiseableBinary.h>
+#include <nx/aci.h>
 
 namespace nx
 {
@@ -86,61 +87,6 @@ namespace nx
 
 	private:
 		const std::string kModuleName = "ACI_HEADER";
-		const std::string kAciStructSig = "ACI0";
-		const std::string kAciDescStructSig = "ACID";
-		static const size_t kAciAlignSize = 0x10;
-
-#pragma pack(push, 1)
-		struct sAciHeader
-		{
-		private:
-			byte_t signature_[4];
-			uint32_t size_; // includes prefacing signature, set only in ACID made by SDK (it enables easy resigning)
-			byte_t reserved_0[4];
-			uint32_t flags_; // set in ACID only
-			uint64_t program_id_; // set only in ACI0 (since ACID is generic)
-			uint64_t program_id_max_;
-			struct sAciSection
-			{
-			private:
-				uint32_t offset_; // aligned by 0x10 from the last one
-				uint32_t size_;
-			public:
-				uint32_t offset() const { return le_word(offset_); }
-				void set_offset(uint32_t offset) { offset_ = le_word(offset); }
-
-				uint32_t size() const { return le_word(size_); }
-				void set_size(uint32_t size) { size_ = le_word(size); }
-			} fac_, sac_, kc_;
-		public:
-			const char* signature() const { return (const char*)signature_; }
-			void set_signature(const char* signature) { memcpy(signature_, signature, 4); }
-
-			uint32_t size() const { return le_word(size_); }
-			void set_size(uint32_t size) { size_ = le_word(size); }
-
-			uint32_t flags() const { return le_word(flags_); }
-			void set_flags(uint32_t flags) { flags_ = le_word(flags); }
-
-			uint64_t program_id() const { return le_dword(program_id_); }
-			void set_program_id(uint64_t program_id) { program_id_ = le_dword(program_id); }
-
-			uint64_t program_id_min() const { return program_id(); }
-			void set_program_id_min(uint64_t program_id) { set_program_id(program_id); }
-
-			uint64_t program_id_max() const { return le_dword(program_id_max_); }
-			void set_program_id_max(uint64_t program_id) { program_id_max_ = le_dword(program_id); }
-
-			const sAciSection& fac() const { return fac_; }
-			sAciSection& fac() { return fac_; }
-
-			const sAciSection& sac() const { return sac_; }
-			sAciSection& sac() { return sac_; }
-
-			const sAciSection& kc() const { return kc_; }
-			sAciSection& kc() { return kc_; }
-		};
-#pragma pack(pop)
 
 		// raw data
 		fnd::MemoryBlob mBinaryBlob;
diff --git a/lib/libnx/include/nx/aci.h b/lib/libnx/include/nx/aci.h
new file mode 100644
index 0000000..85f7cc5
--- /dev/null
+++ b/lib/libnx/include/nx/aci.h
@@ -0,0 +1,67 @@
+#pragma once
+#include <string>
+#include <fnd/types.h>
+#include <crypto/aes.h>
+#include <crypto/sha.h>
+#include <fnd/ISerialiseableBinary.h>
+
+namespace nx
+{
+	namespace aci
+	{
+		const std::string kAciStructSig = "ACI0";
+		const std::string kAciDescStructSig = "ACID";
+		static const size_t kAciAlignSize = 0x10;
+	}
+#pragma pack(push,1)
+	struct sAciHeader
+	{
+	private:
+		byte_t signature_[4];
+		uint32_t size_; // includes prefacing signature, set only in ACID made by SDK (it enables easy resigning)
+		byte_t reserved_0[4];
+		uint32_t flags_; // set in ACID only
+		uint64_t program_id_; // set only in ACI0 (since ACID is generic)
+		uint64_t program_id_max_;
+		struct sAciSection
+		{
+		private:
+			uint32_t offset_; // aligned by 0x10 from the last one
+			uint32_t size_;
+		public:
+			uint32_t offset() const { return le_word(offset_); }
+			void set_offset(uint32_t offset) { offset_ = le_word(offset); }
+
+			uint32_t size() const { return le_word(size_); }
+			void set_size(uint32_t size) { size_ = le_word(size); }
+		} fac_, sac_, kc_;
+	public:
+		const char* signature() const { return (const char*)signature_; }
+		void set_signature(const char* signature) { memcpy(signature_, signature, 4); }
+
+		uint32_t size() const { return le_word(size_); }
+		void set_size(uint32_t size) { size_ = le_word(size); }
+
+		uint32_t flags() const { return le_word(flags_); }
+		void set_flags(uint32_t flags) { flags_ = le_word(flags); }
+
+		uint64_t program_id() const { return le_dword(program_id_); }
+		void set_program_id(uint64_t program_id) { program_id_ = le_dword(program_id); }
+
+		uint64_t program_id_min() const { return program_id(); }
+		void set_program_id_min(uint64_t program_id) { set_program_id(program_id); }
+
+		uint64_t program_id_max() const { return le_dword(program_id_max_); }
+		void set_program_id_max(uint64_t program_id) { program_id_max_ = le_dword(program_id); }
+
+		const sAciSection& fac() const { return fac_; }
+		sAciSection& fac() { return fac_; }
+
+		const sAciSection& sac() const { return sac_; }
+		sAciSection& sac() { return sac_; }
+
+		const sAciSection& kc() const { return kc_; }
+		sAciSection& kc() { return kc_; }
+	};
+#pragma pack(pop)
+}
\ No newline at end of file
diff --git a/lib/libnx/source/AciHeader.cpp b/lib/libnx/source/AciHeader.cpp
index ffd3ee2..eeaa6aa 100644
--- a/lib/libnx/source/AciHeader.cpp
+++ b/lib/libnx/source/AciHeader.cpp
@@ -4,9 +4,9 @@ using namespace nx;
 
 void AciHeader::calculateSectionOffsets()
 {
-	mFac.offset = align(mHeaderOffset, kAciAlignSize) + align(sizeof(sAciHeader), kAciAlignSize);
-	mSac.offset = mFac.offset + align(mFac.size, kAciAlignSize);
-	mKc.offset = mSac.offset + align(mSac.size, kAciAlignSize);
+	mFac.offset = align(mHeaderOffset, aci::kAciAlignSize) + align(sizeof(sAciHeader), aci::kAciAlignSize);
+	mSac.offset = mFac.offset + align(mFac.size, aci::kAciAlignSize);
+	mKc.offset = mSac.offset + align(mSac.size, aci::kAciAlignSize);
 }
 
 bool AciHeader::isEqual(const AciHeader & other) const
@@ -87,10 +87,10 @@ void AciHeader::exportBinary()
 	switch (mType)
 	{
 	case (TYPE_ACI0):
-		hdr->set_signature(kAciStructSig.c_str());
+		hdr->set_signature(aci::kAciStructSig.c_str());
 		break;
 	case (TYPE_ACID):
-		hdr->set_signature(kAciDescStructSig.c_str());
+		hdr->set_signature(aci::kAciDescStructSig.c_str());
 		break;
 	default:
 		throw fnd::Exception(kModuleName, "Unexpected ACI type");
@@ -139,11 +139,11 @@ void AciHeader::importBinary(const byte_t * bytes, size_t len)
 
 	sAciHeader* hdr = (sAciHeader*)mBinaryBlob.getBytes();
 
-	if (memcmp(hdr->signature(), kAciStructSig.c_str(), 4) == 0)
+	if (memcmp(hdr->signature(), aci::kAciStructSig.c_str(), 4) == 0)
 	{
 		mType = TYPE_ACI0;
 	}
-	else if (memcmp(hdr->signature(), kAciDescStructSig.c_str(), 4) == 0)
+	else if (memcmp(hdr->signature(), aci::kAciDescStructSig.c_str(), 4) == 0)
 	{
 		mType = TYPE_ACID;
 	}
@@ -171,7 +171,7 @@ void AciHeader::importBinary(const byte_t * bytes, size_t len)
 	}
 	
 	// the header offset is the MIN(sac.offset, fac.offset, kc.offset) - sizeof(sHeader)
-	mHeaderOffset = MAX(MIN(hdr->sac().offset(), MIN(hdr->fac().offset(), hdr->kc().offset())), align(sizeof(sAciHeader), kAciAlignSize)) - align(sizeof(sAciHeader), kAciAlignSize);
+	mHeaderOffset = MAX(MIN(hdr->sac().offset(), MIN(hdr->fac().offset(), hdr->kc().offset())), align(sizeof(sAciHeader), aci::kAciAlignSize)) - align(sizeof(sAciHeader), aci::kAciAlignSize);
 
 	mFac.offset = hdr->fac().offset() - mHeaderOffset;
 	mFac.size = hdr->fac().size();