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FalsifyTwlBackup:BkpType Legacy に対応。
git-svn-id: file:///Volumes/Transfer/gigaleak_20231201/2020-09-30%20-%20paladin.7z/paladin/ctr_test_tools@38 6b0af911-cb57-b745-895f-eec5701120e1
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@ -23,6 +23,10 @@ namespace TwlBackupBlock
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// for WithPrivateSave
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public const int RESERVED_SIZE_FOR_WPS = 12;
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// for Legacy
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public const int RESERVED_SIZE_FOR_LEGACY = 4;
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public const int NUM_OF_SECTION_LEGACY = 4;
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public UInt32 signature;
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public UInt16 companyCode;
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public UInt16 version;
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@ -41,6 +45,10 @@ namespace TwlBackupBlock
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public UInt32 privateSaveForWPS;
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public readonly Byte[] reservedForWPS;
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// for Legacy
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public UInt32 contentIdForLegacy;
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public UInt16 contentIndexForLegacy;
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private BkpType type;
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private int headerSize;
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@ -72,12 +80,19 @@ namespace TwlBackupBlock
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uniqueId = new Byte[UNIQUE_ID_SIZE];
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hardwareId = new Byte[HARDWARE_ID_SIZE];
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fileSizes = new UInt32[NUM_OF_SECTION];
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contentId = new UInt32[MAX_CONTENTS];
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contentIndex = new UInt16[MAX_CONTENTS];
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if (type != BkpType.LEGACY)
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{
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fileSizes = new UInt32[NUM_OF_SECTION];
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contentId = new UInt32[MAX_CONTENTS];
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contentIndex = new UInt16[MAX_CONTENTS];
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reserved = new Byte[RESERVED_SIZE];
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}
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else
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{
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fileSizes = new UInt32[NUM_OF_SECTION_LEGACY];
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reserved = new Byte[RESERVED_SIZE_FOR_LEGACY];
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}
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tmdReserved = new TmdReserved();
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reserved = new Byte[RESERVED_SIZE];
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if (type == BkpType.WITH_PRIVATE_SAVE)
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{
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reservedForWPS = new Byte[RESERVED_SIZE_FOR_WPS];
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@ -154,7 +169,6 @@ namespace TwlBackupBlock
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using (var ms = new MemoryStream(bytes))
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using (var bw = new BinaryWriter(ms))
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{
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// TODO : Legacy 対応
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bw.Write(signature);
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bw.Write(companyCode);
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bw.Write(version);
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@ -166,16 +180,33 @@ namespace TwlBackupBlock
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{
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bw.Write(e);
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}
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foreach (UInt32 e in contentId)
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if (type != BkpType.LEGACY)
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{
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bw.Write(e);
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foreach (UInt32 e in contentId)
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{
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bw.Write(e);
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}
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}
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foreach (UInt16 e in contentIndex)
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else
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{
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bw.Write(e);
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bw.Write(contentIdForLegacy);
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}
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if (type != BkpType.LEGACY)
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{
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foreach (UInt16 e in contentIndex)
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{
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bw.Write(e);
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}
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}
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bw.Write(tmdReserved.GetBytes());
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bw.Write(headerVersion);
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if (type == BkpType.LEGACY)
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{
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bw.Write(contentIndexForLegacy);
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}
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if (type != BkpType.LEGACY)
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{
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bw.Write(headerVersion);
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}
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bw.Write(reserved);
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if (type == BkpType.WITH_PRIVATE_SAVE)
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{
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@ -204,7 +235,6 @@ namespace TwlBackupBlock
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using (var ms = new MemoryStream(bytes))
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using (var br = new ExtBinaryReader(ms))
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{
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// TODO : Legacy 対応
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br.Read(ref signature);
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br.Read(ref companyCode);
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br.Read(ref version);
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@ -213,14 +243,31 @@ namespace TwlBackupBlock
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br.Read(ref titleId);
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br.Read(ref requiredSize);
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br.Read(fileSizes);
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br.Read(contentId);
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br.Read(contentIndex);
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if (type != BkpType.LEGACY)
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{
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br.Read(contentId);
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}
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else
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{
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br.Read(ref contentIdForLegacy);
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}
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if (type != BkpType.LEGACY)
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{
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br.Read(contentIndex);
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}
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{
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byte[] tmdReservedBytes = new byte[TMD_RESERVED_SIZE];
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br.Read(tmdReservedBytes);
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tmdReserved.SetBytes(tmdReservedBytes);
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}
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br.Read(ref headerVersion);
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if (type == BkpType.LEGACY)
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{
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br.Read(ref contentIndexForLegacy);
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}
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if (type != BkpType.LEGACY)
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{
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br.Read(ref headerVersion);
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}
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br.Read(reserved);
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if (type == BkpType.WITH_PRIVATE_SAVE)
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{
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@ -23,6 +23,17 @@ namespace TwlBackupBlock
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PRIVATE_SAVE
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};
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// いまいち・・・
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public const int MAX_CONTENTS_LEGACY = 1;
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public enum SectionIndexLegacy
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{
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TMD,
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CONTENT,
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PUBLIC_SAVE = CONTENT + MAX_CONTENTS_LEGACY,
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SUB_BANNER,
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PRIVATE_SAVE
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};
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private const int KEY_SIZE = 16;
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private const int ROUND_SCALE = 16;
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@ -41,8 +52,10 @@ namespace TwlBackupBlock
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private const int ENCRYPT_BANNER_SIZE = BANNER_SIZE + AES_SIGN_HEADER_SIZE;
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private const int ENCRYPT_HEADER_SIZE = HEADER_SIZE + AES_SIGN_HEADER_SIZE;
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private const int ENCRYPT_EX_HEADER_SIZE = EX_HEADER_SIZE + AES_SIGN_HEADER_SIZE;
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private const int ENCRYPT_LEGACY_HEADER_SIZE = LEGACY_HEADER_SIZE + AES_SIGN_HEADER_SIZE;
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private const int ENCRYPT_SIGNATURE_SIZE = SIGNATURE_SIZE + AES_SIGN_HEADER_SIZE;
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private const int ENCRYPT_EX_SIGNATURE_SIZE = EX_SIGNATURE_SIZE + AES_SIGN_HEADER_SIZE;
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private const int ENCRYPT_LEGACY_SIGNATURE_SIZE = LEGACY_SIGNATURE_SIZE + AES_SIGN_HEADER_SIZE;
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/// <summary>
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/// バックアップデータをブロックに分割して復号化をおこないます。
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@ -53,17 +66,13 @@ namespace TwlBackupBlock
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/// <returns>分割、復号化されたブロック。</returns>
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public static Blocks DecryptBackupData(byte[] data, byte[] key, BkpType type)
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{
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// TODO : Legacy 対応
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if (type == BkpType.LEGACY)
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{
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Console.WriteLine("Legacy には未対応です。");
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return null;
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}
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int headerSize = 0;
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int signatureSize = 0;
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int encryptHeaderSize = 0;
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int encryptSignatureSize = 0;
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int contentsNum = MAX_CONTENTS;
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int indexPublicSave = (int)SectionIndexLegacy.PUBLIC_SAVE;
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int indexSubBanner = (int)SectionIndexLegacy.SUB_BANNER;
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switch (type)
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{
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@ -80,6 +89,16 @@ namespace TwlBackupBlock
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encryptHeaderSize = ENCRYPT_EX_HEADER_SIZE;
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encryptSignatureSize = ENCRYPT_EX_SIGNATURE_SIZE;
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break;
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case BkpType.LEGACY:
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headerSize = LEGACY_HEADER_SIZE;
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signatureSize = LEGACY_SIGNATURE_SIZE;
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encryptHeaderSize = ENCRYPT_LEGACY_HEADER_SIZE;
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encryptSignatureSize = ENCRYPT_LEGACY_SIGNATURE_SIZE;
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contentsNum = MAX_CONTENTS_LEGACY;
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indexPublicSave = (int)SectionIndexLegacy.PUBLIC_SAVE;
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indexSubBanner = (int)SectionIndexLegacy.SUB_BANNER;
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break;
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}
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if (data == null)
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@ -122,15 +141,14 @@ namespace TwlBackupBlock
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blocks.signature.body = new SignatureBody(
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DecryptBlock(br, signatureSize, key, out blocks.signature.mac, out blocks.signature.iv), type);
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// TODO : Legacy 対応
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int TMD_SIZE = (int)headerBody.fileSizes[(int)SectionIndex.TMD];
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int[] CONTENT_SIZE = new int[MAX_CONTENTS];
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for (int i = 0; i < MAX_CONTENTS; i++)
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int[] CONTENT_SIZE = new int[contentsNum];
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for (int i = 0; i < contentsNum; i++)
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{
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CONTENT_SIZE[i] = (int)headerBody.fileSizes[(int)SectionIndex.CONTENT + i];
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}
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int PUBLIC_SAVE_SIZE = (int)headerBody.fileSizes[(int)SectionIndex.PUBLIC_SAVE];
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int SUB_BANNER_SIZE = (int)headerBody.fileSizes[(int)SectionIndex.SUB_BANNER];
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int PUBLIC_SAVE_SIZE = (int)headerBody.fileSizes[indexPublicSave];
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int SUB_BANNER_SIZE = (int)headerBody.fileSizes[indexSubBanner];
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int PRIVATE_SAVE_SIZE = 0;
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if (type == BkpType.WITH_PRIVATE_SAVE)
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{
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@ -138,7 +156,7 @@ namespace TwlBackupBlock
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}
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blocks.tmd.body = new Body(DecryptBlock(br, TMD_SIZE, key, out blocks.tmd.mac, out blocks.tmd.iv));
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for (int i = 0; i < MAX_CONTENTS; i++)
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for (int i = 0; i < contentsNum; i++)
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{
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if (CONTENT_SIZE[i] > 0)
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{
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@ -393,17 +411,13 @@ namespace TwlBackupBlock
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/// <returns>検証に成功した場合はtrue。それ以外の場合はfalse。</returns>
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public static bool Verify(byte[] data, byte[] aesCbcKey, byte[] aesCmacKey, BkpType type)
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{
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// TODO : Legacy 対応
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if (type == BkpType.LEGACY)
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{
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Console.WriteLine("Legacy には未対応です。");
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return false;
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}
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int headerSize = 0;
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int signatureSize = 0;
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int encryptHeaderSize = 0;
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int encryptSignatureSize = 0;
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int contentsNum = MAX_CONTENTS;
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int indexPublicSave = (int)SectionIndex.PUBLIC_SAVE;
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int indexSubBanner = (int)SectionIndex.SUB_BANNER;
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switch (type)
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{
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@ -420,6 +434,16 @@ namespace TwlBackupBlock
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encryptHeaderSize = ENCRYPT_EX_HEADER_SIZE;
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encryptSignatureSize = ENCRYPT_EX_SIGNATURE_SIZE;
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break;
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case BkpType.LEGACY:
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headerSize = LEGACY_HEADER_SIZE;
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signatureSize = LEGACY_SIGNATURE_SIZE;
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encryptHeaderSize = ENCRYPT_LEGACY_HEADER_SIZE;
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encryptSignatureSize = ENCRYPT_LEGACY_SIGNATURE_SIZE;
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contentsNum = MAX_CONTENTS_LEGACY;
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indexPublicSave = (int)SectionIndexLegacy.PUBLIC_SAVE;
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indexSubBanner = (int)SectionIndexLegacy.SUB_BANNER;
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break;
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}
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if (data == null)
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@ -492,13 +516,13 @@ namespace TwlBackupBlock
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// TODO : Legacy 対応
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int TMD_SIZE = (int)headerBody.fileSizes[(int)SectionIndex.TMD];
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int[] CONTENT_SIZE = new int[MAX_CONTENTS];
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for (int i = 0; i < MAX_CONTENTS; i++)
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int[] CONTENT_SIZE = new int[contentsNum];
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for (int i = 0; i < contentsNum; i++)
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{
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CONTENT_SIZE[i] = (int)headerBody.fileSizes[(int)SectionIndex.CONTENT + i];
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}
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int PUBLIC_SAVE_SIZE = (int)headerBody.fileSizes[(int)SectionIndex.PUBLIC_SAVE];
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int SUB_BANNER_SIZE = (int)headerBody.fileSizes[(int)SectionIndex.SUB_BANNER];
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int PUBLIC_SAVE_SIZE = (int)headerBody.fileSizes[indexPublicSave];
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int SUB_BANNER_SIZE = (int)headerBody.fileSizes[indexSubBanner];
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int PRIVATE_SAVE_SIZE = 0;
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if (type == BkpType.WITH_PRIVATE_SAVE)
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{
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@ -508,7 +532,7 @@ namespace TwlBackupBlock
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int restSize = RoundUp(TMD_SIZE, ROUND_SCALE) +
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RoundUp(PUBLIC_SAVE_SIZE, ROUND_SCALE) + RoundUp(SUB_BANNER_SIZE, ROUND_SCALE) +
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AES_SIGN_HEADER_SIZE * 3;
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for (int i = 0; i < MAX_CONTENTS; i++)
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for (int i = 0; i < contentsNum; i++)
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{
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if (CONTENT_SIZE[i] > 0)
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{
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@ -536,7 +560,7 @@ namespace TwlBackupBlock
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Console.WriteLine("TMDブロックのハッシュが一致しません");
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return false;
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}
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for (int i = 0; i < MAX_CONTENTS; i++)
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for (int i = 0; i < contentsNum; i++)
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{
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if (CONTENT_SIZE[i] > 0)
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{
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@ -560,7 +584,7 @@ namespace TwlBackupBlock
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Console.WriteLine("publicセーブデータブロックのMACが一致しません");
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return false;
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}
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if (!CheckHash(blocks.publicSave, signatureBody.digest.section[(int)SectionIndex.PUBLIC_SAVE]))
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if (!CheckHash(blocks.publicSave, signatureBody.digest.section[indexPublicSave]))
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{
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Console.WriteLine("publicセーブデータブロックのハッシュが一致しません");
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return false;
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@ -571,7 +595,7 @@ namespace TwlBackupBlock
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Console.WriteLine("サブバナーブロックの内容とMACが一致しません");
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return false;
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}
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if (!CheckHash(blocks.subBanner, signatureBody.digest.section[(int)SectionIndex.SUB_BANNER]))
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if (!CheckHash(blocks.subBanner, signatureBody.digest.section[indexSubBanner]))
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{
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Console.WriteLine("サブバナーブロックのハッシュが一致しません");
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return false;
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