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Reorder SM4-based cascade ciphers: apply SM4 as the final stage following external review.

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The cascade order has been updated so that SM4 is applied after the other cipher(s) (e.g., Serpent). This change reflects standard cryptanalytic guidance, which shows that the overall strength of a cascade is limited by the first encryption stage. Given that SM4 uses a 128-bit key, its post-quantum brute-force resistance is lower than ciphers with a 256-bit key (such as Serpent). By placing SM4 last, we ensure that any potential weakness in SM4 cannot reduce the security margin provided by the stronger cipher.
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Mounir IDRASSI committed 2025-05-16 15:37:32 +09:00
1 parent b0311f7a86
commit 982fffe4db
13 files changed
+108 -108
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src/Core/Unix/Linux/CoreLinux.cpp
+3 -3
View File
@@ -316,10 +316,10 @@ namespace VeraCrypt
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (CamelliaKuznyechik))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (KuznyechikTwofish))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (KuznyechikAES))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (KuznyechikSM4))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (SerpentSM4))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (SM4Kuznyechik))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (SM4Serpent))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (SM4Twofish))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (TwofishSerpentSM4))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (SM4TwofishSerpent))
|| (typeid (*volume->GetEncryptionAlgorithm()) == typeid (KuznyechikSerpentCamellia));
if (options.NoKernelCrypto