c-libp2p/include/libp2p/secio/exchange.h

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#pragma once
struct Exchange {
unsigned char* epubkey;
size_t epubkey_size;
unsigned char* signature;
size_t signature_size;
};
struct Exchange* libp2p_secio_exchange_new();
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void libp2p_secio_exchange_free(struct Exchange* in);
/**
* retrieves the approximate size of an encoded version of the passed in struct
* @param in the struct to look at
* @reutrns the size of buffer needed
*/
size_t libp2p_secio_exchange_protobuf_encode_size(struct Exchange* in);
/**
* Encode the struct Exchange in protobuf format
* @param in the struct to be encoded
* @param buffer where to put the results
* @param max_buffer_length the max to write
* @param bytes_written how many bytes were written to the buffer
* @returns true(1) on success, otherwise false(0)
*/
int libp2p_secio_exchange_protobuf_encode(struct Exchange* in, unsigned char* buffer, size_t max_buffer_length, size_t* bytes_written);
/**
* Turns a protobuf array into an Exchange struct
* @param buffer the protobuf array
* @param max_buffer_length the length of the buffer
* @param out a pointer to the new struct Exchange NOTE: this method allocates memory
* @returns true(1) on success, otherwise false(0)
*/
int libp2p_secio_exchange_protobuf_decode(unsigned char* buffer, size_t max_buffer_length, struct Exchange** out);