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94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
#include "null_crypto.hpp"
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#include <llarp/util/logging.hpp>
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#include <limits>
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namespace llarp::quic
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{
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// Cranks a value to "11", i.e. set it to its maximum
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template <typename T>
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void
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crank_to_eleven(T& val)
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{
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val = std::numeric_limits<T>::max();
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}
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NullCrypto::NullCrypto()
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{
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crank_to_eleven(null_ctx.max_encryption);
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crank_to_eleven(null_ctx.max_decryption_failure);
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null_ctx.aead.max_overhead = 1; // Fails an assertion if 0
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null_aead.max_overhead = 1; // FIXME - can this be 0?
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}
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void
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NullCrypto::client_initial(Connection& conn)
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{
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ngtcp2_conn_set_initial_crypto_ctx(conn, &null_ctx);
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ngtcp2_conn_install_initial_key(
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conn,
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&null_aead_ctx,
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null_iv.data(),
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&null_cipher_ctx,
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&null_aead_ctx,
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null_iv.data(),
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&null_cipher_ctx,
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null_iv.size());
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ngtcp2_conn_set_retry_aead(conn, &null_aead, &null_aead_ctx);
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ngtcp2_conn_set_crypto_ctx(conn, &null_ctx);
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}
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void
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NullCrypto::server_initial(Connection& conn)
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{
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LogDebug("Server initial null crypto setup");
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ngtcp2_conn_set_initial_crypto_ctx(conn, &null_ctx);
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ngtcp2_conn_install_initial_key(
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conn,
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&null_aead_ctx,
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null_iv.data(),
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&null_cipher_ctx,
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&null_aead_ctx,
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null_iv.data(),
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&null_cipher_ctx,
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null_iv.size());
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ngtcp2_conn_set_crypto_ctx(conn, &null_ctx);
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}
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bool
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NullCrypto::install_tx_handshake_key(Connection& conn)
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{
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return ngtcp2_conn_install_tx_handshake_key(
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conn, &null_aead_ctx, null_iv.data(), null_iv.size(), &null_cipher_ctx)
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== 0;
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}
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bool
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NullCrypto::install_rx_handshake_key(Connection& conn)
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{
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return ngtcp2_conn_install_rx_handshake_key(
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conn, &null_aead_ctx, null_iv.data(), null_iv.size(), &null_cipher_ctx)
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== 0;
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}
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bool
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NullCrypto::install_tx_key(Connection& conn)
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{
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return ngtcp2_conn_install_tx_key(
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conn,
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null_iv.data(),
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null_iv.size(),
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&null_aead_ctx,
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null_iv.data(),
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null_iv.size(),
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&null_cipher_ctx)
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== 0;
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}
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bool
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NullCrypto::install_rx_key(Connection& conn)
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{
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return ngtcp2_conn_install_rx_key(
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conn, nullptr, 0, &null_aead_ctx, null_iv.data(), null_iv.size(), &null_cipher_ctx)
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== 0;
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}
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} // namespace llarp::quic
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