From 53e28df7f8c818f40a40a2b75dbe6a117019df85 Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Thu, 25 Sep 2025 07:51:44 -0400
Subject: [PATCH] Make MekaCrc official

---
 SabreTools.Hashing.Test/TestHelper.cs | 2 ++
 SabreTools.Hashing/Extensions.cs      | 4 ++++
 SabreTools.Hashing/HashType.cs        | 5 +++++
 SabreTools.Hashing/HashWrapper.cs     | 4 +++-
 SabreTools.Hashing/ZeroHash.cs        | 4 ++++
 5 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/SabreTools.Hashing.Test/TestHelper.cs b/SabreTools.Hashing.Test/TestHelper.cs
index f06e6be..12d50b8 100644
--- a/SabreTools.Hashing.Test/TestHelper.cs
+++ b/SabreTools.Hashing.Test/TestHelper.cs
@@ -172,6 +172,8 @@ namespace SabreTools.Hashing.Test
             {HashType.FNV1a_32, "9086769b"},
             {HashType.FNV1a_64, "399dd1cd965b73db"},
 
+            {HashType.MekaCrc, "0a0a0b1174052f22"},
+
             {HashType.MD2, "362e1a6931668e6a9de5c159c52c71b5"},
             {HashType.MD4, "61bef59d7a754874fccbd67b4ec2fb10"},
             {HashType.MD5, "b722871eaa950016296184d026c5dec9"},
diff --git a/SabreTools.Hashing/Extensions.cs b/SabreTools.Hashing/Extensions.cs
index 9477f01..162d1f6 100644
--- a/SabreTools.Hashing/Extensions.cs
+++ b/SabreTools.Hashing/Extensions.cs
@@ -167,6 +167,8 @@ namespace SabreTools.Hashing
                 HashType.FNV1a_32 => "FNV hash (Variant 1a, 32-bit)",
                 HashType.FNV1a_64 => "FNV hash (Variant 1a, 64-bit)",
 
+                HashType.MekaCrc => "Custom MEKA checksum",
+
                 HashType.MD2 => "MD2 message-digest algorithm",
                 HashType.MD4 => "MD4 message-digest algorithm",
                 HashType.MD5 => "MD5 message-digest algorithm",
@@ -391,6 +393,8 @@ namespace SabreTools.Hashing
                 "fnv1a_32" => HashType.FNV1a_32,
                 "fnv1a_64" => HashType.FNV1a_64,
 
+                "meka" or "mekacrc" or "meka_crc" => HashType.MekaCrc,
+
                 "md2" => HashType.MD2,
                 "md4" => HashType.MD4,
                 "md5" => HashType.MD5,
diff --git a/SabreTools.Hashing/HashType.cs b/SabreTools.Hashing/HashType.cs
index 4d5fadd..224e5bd 100644
--- a/SabreTools.Hashing/HashType.cs
+++ b/SabreTools.Hashing/HashType.cs
@@ -756,6 +756,11 @@ namespace SabreTools.Hashing
 
         #endregion
 
+        /// <summary>
+        /// Custom checksum used by MEKA
+        /// </summary>
+        MekaCrc,
+
         #region Message Digest
 
         /// <summary>
diff --git a/SabreTools.Hashing/HashWrapper.cs b/SabreTools.Hashing/HashWrapper.cs
index 0acb466..78e8a5b 100644
--- a/SabreTools.Hashing/HashWrapper.cs
+++ b/SabreTools.Hashing/HashWrapper.cs
@@ -237,12 +237,14 @@ namespace SabreTools.Hashing
                 HashType.FNV1a_32 => new FNV1a_32(),
                 HashType.FNV1a_64 => new FNV1a_64(),
 
+                HashType.MekaCrc => new MekaCrc(),
+
                 HashType.MD2 => new MD2(),
                 HashType.MD4 => new MD4(),
                 HashType.MD5 => MD5.Create(),
 
                 HashType.RIPEMD128 => new RipeMD128(),
-                HashType.RIPEMD160 => new CryptographicHash.RipeMD160(),
+                HashType.RIPEMD160 => new RipeMD160(),
                 HashType.RIPEMD256 => new RipeMD256(),
                 HashType.RIPEMD320 => new RipeMD320(),
 
diff --git a/SabreTools.Hashing/ZeroHash.cs b/SabreTools.Hashing/ZeroHash.cs
index 8ce81b3..aa5468d 100644
--- a/SabreTools.Hashing/ZeroHash.cs
+++ b/SabreTools.Hashing/ZeroHash.cs
@@ -250,6 +250,8 @@ namespace SabreTools.Hashing
             {HashType.FNV1a_32, [0x81, 0x1c, 0x9d, 0xc5]},
             {HashType.FNV1a_64, [0xcb, 0xf2, 0x9c, 0xe4, 0x84, 0x22, 0x23, 0x25]},
 
+            {HashType.MekaCrc, [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]},
+
             {HashType.MD2, [0x83, 0x50, 0xe5, 0xa3, 0xe2, 0x4c, 0x15, 0x3d,
                             0xf2, 0x27, 0x5c, 0x9f, 0x80, 0x69, 0x27, 0x73]},
             {HashType.MD4, [0x31, 0xd6, 0xcf, 0xe0, 0xd1, 0x6a, 0xe9, 0x31,
@@ -550,6 +552,8 @@ namespace SabreTools.Hashing
             {HashType.FNV1a_32, "811c9dc5"},
             {HashType.FNV1a_64, "cbf29ce484222325"},
 
+            {HashType.MekaCrc, "0000000000000000"},
+
             {HashType.MD2, "8350e5a3e24c153df2275c9f80692773"},
             {HashType.MD4, "31d6cfe0d16ae931b73c59d7e0c089c0"},
             {HashType.MD5, "d41d8cd98f00b204e9800998ecf8427e"},