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change hash function to SHA512

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Slavasil
2025-12-04 22:45:34 +03:00
parent 33e31cb070
commit 8567014a48
2 changed files with 3 additions and 3 deletions
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4
src/KeyKeeper/PasswordStore/Crypto/PassStoreContentChunk.cs
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@@ -129,7 +129,7 @@ public class PassStoreContentChunk
private static byte[] ComputeHmac(byte[] data, byte[] key, int chunkOrdinal) private static byte[] ComputeHmac(byte[] data, byte[] key, int chunkOrdinal)
{ {
SHA3_512 hasher = SHA3_512.Create(); SHA512 hasher = SHA512.Create();
byte[] innerKey = key.Select(x => (byte)(x ^ 0x36)).ToArray(); byte[] innerKey = key.Select(x => (byte)(x ^ 0x36)).ToArray();
byte[] outerKey = key.Select(x => (byte)(x ^ 0x5c)).ToArray(); byte[] outerKey = key.Select(x => (byte)(x ^ 0x5c)).ToArray();
@@ -145,7 +145,7 @@ public class PassStoreContentChunk
byte[] innerHash = hasher.Hash!; byte[] innerHash = hasher.Hash!;
hasher.Clear(); hasher.Clear();
hasher = SHA3_512.Create(); hasher = SHA512.Create();
hasher.TransformBlock(outerKey, 0, outerKey.Length, null, 0); hasher.TransformBlock(outerKey, 0, outerKey.Length, null, 0);
Array.Fill<byte>(outerKey, 0); Array.Fill<byte>(outerKey, 0);
hasher.TransformFinalBlock(innerHash, 0, innerHash.Length); hasher.TransformFinalBlock(innerHash, 0, innerHash.Length);

2
src/KeyKeeper/PasswordStore/FileFormatConstants.cs
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@@ -11,7 +11,7 @@ static class FileFormatConstants
public const int MAX_AESKDF_ROUNDS = AesKdf.MAX_ROUNDS; public const int MAX_AESKDF_ROUNDS = AesKdf.MAX_ROUNDS;
public const byte ENCRYPT_ALGO_AES = 14; public const byte ENCRYPT_ALGO_AES = 14;
public const byte KDF_TYPE_AESKDF = 195; public const byte KDF_TYPE_AESKDF = 195;
public const int HMAC_SIZE = HMACSHA3_512.HashSizeInBytes; public const int HMAC_SIZE = SHA512.HashSizeInBytes;
public const uint FILE_FIELD_BEGIN = 0x7853dbd5; public const uint FILE_FIELD_BEGIN = 0x7853dbd5;
public const uint FILE_FIELD_INNER_CRYPTO = 0x613e91e4; public const uint FILE_FIELD_INNER_CRYPTO = 0x613e91e4;
public const uint FILE_FIELD_CONFIG = 0xd36a53c0; public const uint FILE_FIELD_CONFIG = 0xd36a53c0;