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https://github.com/zeromq/libzmq
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da31917f4f
Relicense permission collected from all relevant authors as tallied at: https://github.com/rlenferink/libzmq-relicense/blob/master/checklist.md The relicense grants are collected under RELICENSE/ and will be moved to the above repository in a later commit. Fixes https://github.com/zeromq/libzmq/issues/2376
80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
/* SPDX-License-Identifier: MPL-2.0 */
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#ifndef __ZMQ_CURVE_MECHANISM_BASE_HPP_INCLUDED__
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#define __ZMQ_CURVE_MECHANISM_BASE_HPP_INCLUDED__
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#ifdef ZMQ_HAVE_CURVE
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#if defined(ZMQ_USE_LIBSODIUM)
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#include "sodium.h"
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#endif
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#if crypto_box_NONCEBYTES != 24 || crypto_box_PUBLICKEYBYTES != 32 \
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|| crypto_box_SECRETKEYBYTES != 32 || crypto_box_ZEROBYTES != 32 \
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|| crypto_box_BOXZEROBYTES != 16 || crypto_secretbox_NONCEBYTES != 24 \
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|| crypto_secretbox_ZEROBYTES != 32 || crypto_secretbox_BOXZEROBYTES != 16
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#error "CURVE library not built properly"
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#endif
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#include "mechanism_base.hpp"
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#include "options.hpp"
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#include <memory>
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namespace zmq
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{
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class curve_encoding_t
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{
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public:
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curve_encoding_t (const char *encode_nonce_prefix_,
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const char *decode_nonce_prefix_,
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const bool downgrade_sub_);
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int encode (msg_t *msg_);
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int decode (msg_t *msg_, int *error_event_code_);
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uint8_t *get_writable_precom_buffer () { return _cn_precom; }
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const uint8_t *get_precom_buffer () const { return _cn_precom; }
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typedef uint64_t nonce_t;
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nonce_t get_and_inc_nonce () { return _cn_nonce++; }
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void set_peer_nonce (nonce_t peer_nonce_) { _cn_peer_nonce = peer_nonce_; };
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private:
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int check_validity (msg_t *msg_, int *error_event_code_);
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const char *_encode_nonce_prefix;
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const char *_decode_nonce_prefix;
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nonce_t _cn_nonce;
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nonce_t _cn_peer_nonce;
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// Intermediary buffer used to speed up boxing and unboxing.
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uint8_t _cn_precom[crypto_box_BEFORENMBYTES];
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const bool _downgrade_sub;
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ZMQ_NON_COPYABLE_NOR_MOVABLE (curve_encoding_t)
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};
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class curve_mechanism_base_t : public virtual mechanism_base_t,
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public curve_encoding_t
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{
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public:
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curve_mechanism_base_t (session_base_t *session_,
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const options_t &options_,
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const char *encode_nonce_prefix_,
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const char *decode_nonce_prefix_,
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const bool downgrade_sub_);
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// mechanism implementation
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int encode (msg_t *msg_) ZMQ_OVERRIDE;
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int decode (msg_t *msg_) ZMQ_OVERRIDE;
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};
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}
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#endif
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#endif
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