Spell none cipher with lowercase

OpenVPN uses a idiosyncrasy that all ciphers are uppercase but none is
spelt lowercase and excepts this idiosyncrasy also in IV_CIPHERS

Signed-off-by: Arne Schwabe <[email protected]>

Author: schwabe

openvpn/crypto/cryptoalgs.hpp

@@ -189,7 +189,7 @@ class Alg
 
 inline std::array<Alg, Type::SIZE> algs = {
     // clang-format off
-    Alg{"NONE",               F_CIPHER|F_DIGEST|CBC_HMAC,   0,  0,  0 },
+    Alg{"none",               F_CIPHER|F_DIGEST|CBC_HMAC,   0,  0,  0 },
     Alg{"AES-128-CBC",        F_CIPHER|CBC_HMAC,           16, 16, 16 },
     Alg{"AES-192-CBC",        F_CIPHER|CBC_HMAC,           24, 16, 16 },
     Alg{"AES-256-CBC",        F_CIPHER|CBC_HMAC,           32, 16, 16 },

test/unittests/test_proto.cpp

@@ -1321,7 +1321,7 @@ TEST(proto, iv_ciphers_legacy)
     auto ivciphers = infostring.substr(infostring.find("IV_CIPHERS="));
     ivciphers = ivciphers.substr(0, ivciphers.find("\n"));
 
-    std::string expectedstr{"IV_CIPHERS=NONE:AES-128-CBC:AES-192-CBC:AES-256-CBC:DES-CBC:DES-EDE3-CBC:BF-CBC:AES-128-GCM:AES-192-GCM:AES-256-GCM"};
+    std::string expectedstr{"IV_CIPHERS=none:AES-128-CBC:AES-192-CBC:AES-256-CBC:DES-CBC:DES-EDE3-CBC:BF-CBC:AES-128-GCM:AES-192-GCM:AES-256-GCM"};
     if (SSLLib::CryptoAPI::CipherContextAEAD::is_supported(nullptr, openvpn::CryptoAlgs::CHACHA20_POLY1305))
         expectedstr += ":CHACHA20-POLY1305";