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101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
#ifndef LLARP_CRYPTO_H_
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#define LLARP_CRYPTO_H_
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#include <llarp/buffer.h>
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#include <llarp/common.h>
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#include <stdbool.h>
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#include <stdint.h>
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/**
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* crypto.h
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*
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* libsodium abstraction layer
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* potentially allow libssl support in the future
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define PUBKEYSIZE 32
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#define SECKEYSIZE 64
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#define NONCESIZE 24
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#define SHAREDKEYSIZE 32
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#define HASHSIZE 64
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#define SHORTHASHSIZE 32
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#define HMACSECSIZE 32
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#define SIGSIZE 64
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#define TUNNONCESIZE 32
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#define HMACSIZE 32
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typedef byte_t llarp_pubkey_t[PUBKEYSIZE];
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typedef byte_t llarp_seckey_t[SECKEYSIZE];
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typedef byte_t llarp_nonce_t[NONCESIZE];
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typedef byte_t llarp_sharedkey_t[SHAREDKEYSIZE];
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typedef byte_t llarp_hash_t[HASHSIZE];
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typedef byte_t llarp_shorthash_t[SHORTHASHSIZE];
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typedef byte_t llarp_hmac_t[HMACSIZE];
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typedef byte_t llarp_hmacsec_t[HMACSECSIZE];
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typedef byte_t llarp_sig_t[SIGSIZE];
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typedef byte_t llarp_tunnel_nonce_t[TUNNONCESIZE];
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/// get public key from secret
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byte_t *
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llarp_seckey_topublic(byte_t *secret);
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/// label functors
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typedef bool (*llarp_dh_func)(llarp_sharedkey_t *, llarp_pubkey_t,
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llarp_tunnel_nonce_t, llarp_seckey_t);
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typedef bool (*llarp_transport_dh_func)(byte_t *, byte_t *, byte_t *, byte_t *);
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typedef bool (*llarp_sym_cipher_func)(llarp_buffer_t, llarp_sharedkey_t,
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llarp_nonce_t);
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typedef bool (*llarp_hash_func)(byte_t *, llarp_buffer_t);
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typedef bool (*llarp_shorthash_func)(byte_t *, llarp_buffer_t);
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typedef bool (*llarp_hmac_func)(byte_t *, llarp_buffer_t, const byte_t *);
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typedef bool (*llarp_sign_func)(byte_t *, const byte_t *, llarp_buffer_t);
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typedef bool (*llarp_verify_func)(const byte_t *, llarp_buffer_t,
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const byte_t *);
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typedef bool (*llarp_frame_crypto_func)(llarp_buffer_t *, const byte_t *);
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/// library crypto configuration
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struct llarp_crypto
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{
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llarp_sym_cipher_func xchacha20;
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llarp_dh_func dh_client;
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llarp_dh_func dh_server;
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llarp_transport_dh_func transport_dh_client;
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llarp_transport_dh_func transport_dh_server;
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llarp_hash_func hash;
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llarp_shorthash_func shorthash;
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llarp_hmac_func hmac;
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llarp_sign_func sign;
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llarp_verify_func verify;
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llarp_frame_crypto_func encrypt_frame;
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llarp_frame_crypto_func decrypt_frame;
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void (*randomize)(llarp_buffer_t);
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void (*randbytes)(void *, size_t);
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void (*identity_keygen)(byte_t *);
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void (*encryption_keygen)(byte_t *);
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};
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/// allocate crypto
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void
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llarp_crypto_libsodium_init(struct llarp_crypto *c);
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/// initialize crypto
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bool
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llarp_crypto_initialized(struct llarp_crypto *c);
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#ifdef __cplusplus
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}
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#endif
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#endif
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