mirror of
https://github.com/Thealexbarney/LibHac.git
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209 lines
11 KiB
C#
209 lines
11 KiB
C#
// ReSharper disable InconsistentNaming
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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namespace libhac
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{
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public class Keyset
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{
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public byte[] secure_boot_key { get; set; } = new byte[0x10];
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public byte[] tsec_key { get; set; } = new byte[0x10];
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public byte[][] keyblob_keys { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x10);
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public byte[][] keyblob_mac_keys { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x10);
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public byte[][] encrypted_keyblobs { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0xB0);
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public byte[][] keyblobs { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x90);
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public byte[][] keyblob_key_sources { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x10);
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public byte[] keyblob_mac_key_source { get; set; } = new byte[0x10];
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public byte[] master_key_source { get; set; } = new byte[0x10];
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public byte[][] master_keys { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x10);
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public byte[][] package1_keys { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x10);
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public byte[][] package2_keys { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x10);
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public byte[] package2_key_source { get; set; } = new byte[0x10];
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public byte[] aes_kek_generation_source { get; set; } = new byte[0x10];
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public byte[] aes_key_generation_source { get; set; } = new byte[0x10];
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public byte[] key_area_key_application_source { get; set; } = new byte[0x10];
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public byte[] key_area_key_ocean_source { get; set; } = new byte[0x10];
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public byte[] key_area_key_system_source { get; set; } = new byte[0x10];
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public byte[] titlekek_source { get; set; } = new byte[0x10];
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public byte[] header_kek_source { get; set; } = new byte[0x10];
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public byte[] sd_card_kek_source { get; set; } = new byte[0x10];
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public byte[][] sd_card_key_sources { get; set; } = Util.CreateJaggedArray<byte[][]>(2, 0x20);
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public byte[][] sd_card_key_sources_specific { get; set; } = Util.CreateJaggedArray<byte[][]>(2, 0x20);
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public byte[] encrypted_header_key { get; set; } = new byte[0x20];
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public byte[] header_key { get; set; } = new byte[0x20];
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public byte[][] titlekeks { get; set; } = Util.CreateJaggedArray<byte[][]>(0x20, 0x10);
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public byte[][][] key_area_keys { get; set; } = Util.CreateJaggedArray<byte[][][]>(0x20, 3, 0x10);
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public byte[][] sd_card_keys { get; set; } = Util.CreateJaggedArray<byte[][]>(2, 0x20);
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public byte[] nca_hdr_fixed_key_modulus { get; set; } = new byte[0x100];
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public byte[] acid_fixed_key_modulus { get; set; } = new byte[0x100];
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public byte[] package2_fixed_key_modulus { get; set; } = new byte[0x100];
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public Dictionary<byte[], byte[]> TitleKeys { get; } = new Dictionary<byte[], byte[]>(new ByteArray128BitComparer());
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public void SetSdSeed(byte[] sdseed)
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{
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for (int k = 0; k < sd_card_key_sources.Length; k++)
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{
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for (int i = 0; i < 0x20; i++)
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{
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sd_card_key_sources_specific[k][i] = (byte)(sd_card_key_sources[k][i] ^ sdseed[i & 0xF]);
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}
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}
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DeriveKeys();
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}
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private void DeriveKeys()
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{
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//var cmac = new byte[0x10];
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//for (int i = 0; i < 0x20; i++)
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//{
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// Crypto.DecryptEcb(tsec_key, keyblob_key_sources[i], keyblob_keys[i], 0x10);
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// Crypto.DecryptEcb(secure_boot_key, keyblob_keys[i], keyblob_keys[i], 0x10);
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// Crypto.DecryptEcb(keyblob_keys[i], keyblob_mac_key_source, keyblob_mac_keys[i], 0x10);
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//}
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var sdKek = new byte[0x10];
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Crypto.GenerateKek(sdKek, sd_card_kek_source, master_keys[0], aes_kek_generation_source, aes_key_generation_source);
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for (int k = 0; k < sd_card_key_sources_specific.Length; k++)
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{
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Crypto.DecryptEcb(sdKek, sd_card_key_sources_specific[k], sd_card_keys[k], 0x20);
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}
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}
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}
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public static class ExternalKeys
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{
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private const int TitleKeySize = 0x10;
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private static readonly Dictionary<string, KeyValue> KeyDict = CreateKeyDict();
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public static Keyset ReadKeyFile(string filename, string titleKeysFilename, IProgressReport progress = null)
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{
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var keyset = ReadKeyFile(filename, progress);
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using (var reader = new StreamReader(new FileStream(titleKeysFilename, FileMode.Open, FileAccess.Read)))
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{
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string line;
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while ((line = reader.ReadLine()) != null)
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{
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var a = line.Split(',');
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if (a.Length != 2) continue;
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var rightsId = a[0].Trim().ToBytes();
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var titleKey = a[1].Trim().ToBytes();
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if (rightsId.Length != TitleKeySize)
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{
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progress?.LogMessage($"Rights ID {rightsId.ToHexString()} had incorrect size {rightsId.Length}. (Expected {TitleKeySize})");
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continue;
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}
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if (titleKey.Length != TitleKeySize)
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{
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progress?.LogMessage($"Title key {titleKey.ToHexString()} had incorrect size {titleKey.Length}. (Expected {TitleKeySize})");
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continue;
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}
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keyset.TitleKeys.Add(rightsId, titleKey);
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}
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}
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return keyset;
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}
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public static Keyset ReadKeyFile(string filename, IProgressReport progress = null)
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{
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var keyset = new Keyset();
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using (var reader = new StreamReader(new FileStream(filename, FileMode.Open, FileAccess.Read)))
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{
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string line;
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while ((line = reader.ReadLine()) != null)
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{
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var a = line.Split('=');
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if (a.Length != 2) continue;
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var key = a[0].Trim();
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var valueStr = a[1].Trim();
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if (!KeyDict.TryGetValue(key, out var kv))
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{
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progress?.LogMessage($"Failed to match key {key}");
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continue;
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}
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var value = valueStr.ToBytes();
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if (value.Length != kv.Size)
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{
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progress?.LogMessage($"Key {key} had incorrect size {value.Length}. (Expected {kv.Size})");
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continue;
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}
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kv.Assign(keyset, value);
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}
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}
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return keyset;
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}
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private static Dictionary<string, KeyValue> CreateKeyDict()
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{
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var keys = new List<KeyValue>
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{
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new KeyValue("aes_kek_generation_source", 0x10, (set, key) => set.aes_kek_generation_source = key),
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new KeyValue("aes_key_generation_source", 0x10, (set, key) => set.aes_key_generation_source = key),
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new KeyValue("key_area_key_application_source", 0x10, (set, key) => set.key_area_key_application_source = key),
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new KeyValue("key_area_key_ocean_source", 0x10, (set, key) => set.key_area_key_ocean_source = key),
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new KeyValue("key_area_key_system_source", 0x10, (set, key) => set.key_area_key_system_source = key),
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new KeyValue("titlekek_source", 0x10, (set, key) => set.titlekek_source = key),
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new KeyValue("header_kek_source", 0x10, (set, key) => set.header_kek_source = key),
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new KeyValue("header_key_source", 0x20, (set, key) => set.encrypted_header_key = key),
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new KeyValue("header_key", 0x20, (set, key) => set.header_key = key),
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new KeyValue("encrypted_header_key", 0x20, (set, key) => set.encrypted_header_key = key),
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new KeyValue("package2_key_source", 0x10, (set, key) => set.package2_key_source = key),
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new KeyValue("sd_card_kek_source", 0x10, (set, key) => set.sd_card_kek_source = key),
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new KeyValue("sd_card_nca_key_source", 0x20, (set, key) => set.sd_card_key_sources[1] = key),
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new KeyValue("sd_card_save_key_source", 0x20, (set, key) => set.sd_card_key_sources[0] = key),
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new KeyValue("master_key_source", 0x10, (set, key) => set.master_key_source = key),
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new KeyValue("keyblob_mac_key_source", 0x10, (set, key) => set.keyblob_mac_key_source = key),
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new KeyValue("secure_boot_key", 0x10, (set, key) => set.secure_boot_key = key),
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new KeyValue("tsec_key", 0x10, (set, key) => set.tsec_key = key)
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};
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for (int slot = 0; slot < 0x20; slot++)
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{
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int i = slot;
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keys.Add(new KeyValue($"keyblob_key_source_{i:D2}", 0x10, (set, key) => set.keyblob_key_sources[i] = key));
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keys.Add(new KeyValue($"keyblob_key_{i:D2}", 0x10, (set, key) => set.keyblob_keys[i] = key));
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keys.Add(new KeyValue($"keyblob_mac_key_{i:D2}", 0x10, (set, key) => set.keyblob_mac_keys[i] = key));
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keys.Add(new KeyValue($"encrypted_keyblob_{i:D2}", 0xB0, (set, key) => set.encrypted_keyblobs[i] = key));
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keys.Add(new KeyValue($"keyblob_{i:D2}", 0x90, (set, key) => set.keyblobs[i] = key));
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keys.Add(new KeyValue($"master_key_{i:D2}", 0x10, (set, key) => set.master_keys[i] = key));
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keys.Add(new KeyValue($"package1_key_{i:D2}", 0x10, (set, key) => set.package1_keys[i] = key));
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keys.Add(new KeyValue($"package2_key_{i:D2}", 0x10, (set, key) => set.package2_keys[i] = key));
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keys.Add(new KeyValue($"titlekek_{i:D2}", 0x10, (set, key) => set.titlekeks[i] = key));
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keys.Add(new KeyValue($"key_area_key_application_{i:D2}", 0x10, (set, key) => set.key_area_keys[i][0] = key));
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keys.Add(new KeyValue($"key_area_key_ocean_{i:D2}", 0x10, (set, key) => set.key_area_keys[i][1] = key));
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keys.Add(new KeyValue($"key_area_key_system_{i:D2}", 0x10, (set, key) => set.key_area_keys[i][2] = key));
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}
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return keys.ToDictionary(k => k.Name, k => k);
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}
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private class KeyValue
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{
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public string Name;
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public int Size;
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public Action<Keyset, byte[]> Assign;
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public KeyValue(string name, int size, Action<Keyset, byte[]> assign)
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{
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Name = name;
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Size = size;
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Assign = assign;
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}
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}
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}
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}
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