diff options
Diffstat (limited to 'lib/modes/aead/aead.cpp')
| -rw-r--r-- | lib/modes/aead/aead.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/modes/aead/aead.cpp b/lib/modes/aead/aead.cpp index 26a7091fd..da860c26a 100644 --- a/lib/modes/aead/aead.cpp +++ b/lib/modes/aead/aead.cpp @@ -42,17 +42,18 @@ AEAD_Mode* get_aead(const std::string& algo_spec, Cipher_Dir direction) return nullptr; const std::string cipher_name = algo_parts[0]; + const BlockCipher* cipher = af.prototype_block_cipher(cipher_name); + if(!cipher) + return nullptr; + const std::vector<std::string> mode_info = parse_algorithm_name(algo_parts[1]); if(mode_info.empty()) return nullptr; const std::string mode_name = mode_info[0]; - const size_t tag_size = (mode_info.size() > 1) ? to_u32bit(mode_info[1]) : 16; - const BlockCipher* cipher = af.prototype_block_cipher(cipher_name); - if(!cipher) - return nullptr; + const size_t tag_size = (mode_info.size() > 1) ? to_u32bit(mode_info[1]) : cipher->block_size(); #if defined(BOTAN_HAS_AEAD_CCM) if(mode_name == "CCM-8") |