/* * (C) 2015,2017 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ #include #include #include extern "C" { using namespace Botan_FFI; BOTAN_FFI_DECLARE_STRUCT(botan_block_cipher_struct, Botan::BlockCipher, 0x64C29716); int botan_block_cipher_init(botan_block_cipher_t* bc, const char* bc_name) { return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int { if(bc == nullptr || bc_name == nullptr || *bc_name == 0) return BOTAN_FFI_ERROR_NULL_POINTER; *bc = nullptr; std::unique_ptr cipher(Botan::BlockCipher::create(bc_name)); if(cipher == nullptr) return BOTAN_FFI_ERROR_NOT_IMPLEMENTED; *bc = new botan_block_cipher_struct(cipher.release()); return BOTAN_FFI_SUCCESS; }); } /** * Destroy a block cipher object */ int botan_block_cipher_destroy(botan_block_cipher_t bc) { return BOTAN_FFI_CHECKED_DELETE(bc); } int botan_block_cipher_clear(botan_block_cipher_t bc) { return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.clear(); }); } /** * Set the key for a block cipher instance */ int botan_block_cipher_set_key(botan_block_cipher_t bc, const uint8_t key[], size_t len) { return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.set_key(key, len); }); } /** * Return the positive block size of this block cipher, or negative to * indicate an error */ int botan_block_cipher_block_size(botan_block_cipher_t bc) { return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { return static_cast(b.block_size()); }); } int botan_block_cipher_encrypt_blocks(botan_block_cipher_t bc, const uint8_t in[], uint8_t out[], size_t blocks) { return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.encrypt_n(in, out, blocks); }); } int botan_block_cipher_decrypt_blocks(botan_block_cipher_t bc, const uint8_t in[], uint8_t out[], size_t blocks) { return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.decrypt_n(in, out, blocks); }); } int botan_block_cipher_name(botan_block_cipher_t cipher, char* name, size_t* name_len) { return BOTAN_FFI_DO(Botan::BlockCipher, cipher, bc, { return write_str_output(name, name_len, bc.name()); }); } }