From d194fef1afe9cd34baa124e21037ffcbdae92c01 Mon Sep 17 00:00:00 2001
From: hashlag <hashlag@hashlag.net>
Date: Sun, 1 Feb 2026 00:24:50 +0300
Subject: [PATCH] Mark all Block::Decryptor<> methods const.

This allows for convenient usage of const Decryptor<Impl> &.
---
 Chaos/Cipher/Block/Decryptor.hpp    | 6 +++---
 Chaos/Cipher/Block/Des/DesCrypt.hpp | 6 +++---
 ChaosTests/Cipher/DesCryptTests.cpp | 4 ++--
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/Chaos/Cipher/Block/Decryptor.hpp b/Chaos/Cipher/Block/Decryptor.hpp
index cd21712..01ac308 100644
--- a/Chaos/Cipher/Block/Decryptor.hpp
+++ b/Chaos/Cipher/Block/Decryptor.hpp
@@ -9,18 +9,18 @@ class Decryptor
 {
 public:
     template<typename OutputIt, typename InputIt>
-    void DecryptBlock(OutputIt out, InputIt inBegin, InputIt inEnd)
+    void DecryptBlock(OutputIt out, InputIt inBegin, InputIt inEnd) const
     {
         Impl().DecryptBlock(out, inBegin, inEnd);
     }
 
     template<typename Block>
-    auto DecryptBlock(Block block)
+    auto DecryptBlock(Block block) const
     {
         return Impl().DecryptBlock(block);
     }
 
-    auto GetBlockSize()
+    auto GetBlockSize() const
     {
         return Impl().GetBlockSize();
     }
diff --git a/Chaos/Cipher/Block/Des/DesCrypt.hpp b/Chaos/Cipher/Block/Des/DesCrypt.hpp
index 68eba67..d25fd81 100644
--- a/Chaos/Cipher/Block/Des/DesCrypt.hpp
+++ b/Chaos/Cipher/Block/Des/DesCrypt.hpp
@@ -279,7 +279,7 @@ public:
         { }
 
         template<typename OutputIt, typename InputIt>
-        void DecryptBlock(OutputIt out, InputIt inBegin, InputIt inEnd)
+        void DecryptBlock(OutputIt out, InputIt inBegin, InputIt inEnd) const
         {
             RawBlockArray block;
 
@@ -297,12 +297,12 @@ public:
             Inner_::Bitwise::CrunchUInt64(out, decrypted);
         }
 
-        Block DecryptBlock(Block block)
+        Block DecryptBlock(Block block) const
         {
             return DesCrypt::ProcessBlock(block, Schedule_);
         }
 
-        constexpr size_t GetBlockSize()
+        constexpr size_t GetBlockSize() const
         {
             return BlockSize;
         }
diff --git a/ChaosTests/Cipher/DesCryptTests.cpp b/ChaosTests/Cipher/DesCryptTests.cpp
index 5c66e72..1df1028 100644
--- a/ChaosTests/Cipher/DesCryptTests.cpp
+++ b/ChaosTests/Cipher/DesCryptTests.cpp
@@ -541,7 +541,7 @@ TEST(DesCryptTests, EncryptUInt64BlockThroughBaseTest)
 }
 
 template<typename Impl, typename InputIt>
-static std::vector<uint8_t> DecryptThroughBase(Decryptor<Impl> & dec,
+static std::vector<uint8_t> DecryptThroughBase(const Decryptor<Impl> & dec,
                                                InputIt begin, InputIt end)
 {
     std::vector<uint8_t> result;
@@ -565,7 +565,7 @@ TEST(DesCryptTests, DecryptThroughBaseTest)
 }
 
 template<typename Impl>
-static uint64_t DecryptUInt64BlockThroughBase(Decryptor<Impl> & dec, uint64_t block)
+static uint64_t DecryptUInt64BlockThroughBase(const Decryptor<Impl> & dec, uint64_t block)
 {
     return dec.DecryptBlock(block);
 }