Add final attribute to many classes

In some cases this can offer better optimization, via devirtualization.
And it lets the user know the class is not intended for derivation.

Some discussion in GH #402

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/modes/cbc/cbc.h b/src/lib/modes/cbc/cbc.h
index 7fbcc8837..9a767d3a0 100644
--- a/src/lib/modes/cbc/cbc.h
+++ b/src/lib/modes/cbc/cbc.h
@@ -77,7 +77,7 @@ class BOTAN_DLL CBC_Encryption : public CBC_Mode
 /**
 * CBC Encryption with ciphertext stealing (CBC-CS3 variant)
 */
-class BOTAN_DLL CTS_Encryption : public CBC_Encryption
+class BOTAN_DLL CTS_Encryption final : public CBC_Encryption
    {
    public:
       CTS_Encryption(BlockCipher* cipher) : CBC_Encryption(cipher, nullptr) {}
@@ -114,7 +114,7 @@ class BOTAN_DLL CBC_Decryption : public CBC_Mode
 /**
 * CBC Decryption with ciphertext stealing (CBC-CS3 variant)
 */
-class BOTAN_DLL CTS_Decryption : public CBC_Decryption
+class BOTAN_DLL CTS_Decryption final : public CBC_Decryption
    {
    public:
       CTS_Decryption(BlockCipher* cipher) : CBC_Decryption(cipher, nullptr) {}