Hi,

We are integrating https://github.com/prplfoundation/hostap code into our project that makes uses of crypto and SSL functionality. Their code is so written that they have interfaces defined where crypto and SSL 3rd party algorithms can be called and implemented.

We are stuck implementing those APIs interfaces using MBedTLS and in need of help for its implementation. Referring to the below set of interfaces as defined in https://github.com/prplfoundation/hostap/blob/master/src/crypto/tls_none.c we need to implement required code for MBedTLS.

I am in need help implementing below API:

struct tls_connection * tls_connection_init(void *tls_ctx) where tls_connection is below defined type [user defined type - hope is correct implementation]:

struct tls_connection { mbedtls_ssl_context *ssl; keyman_creds *cr; };

We have made the below implementation

struct tls_connection * tls_connection_init(void *ssl_ctx) { mbedtls_ssl_context *mssl_ctx = ssl_ctx; struct tls_connection *conn;

conn = os_zalloc(sizeof(*conn)); if (conn == NULL) { return NULL; }

conn->ssl = mssl_ctx ; conn->cr = NULL;

mbedtls_ssl_set_bio(ssl_ctx, NULL, net_send, net_recv, NULL);

return conn; }

If my above implementation is correct please let me know how to implement our own net_send and net_recv function. There are many buffer declaration in mbedtls_ssl_context I am not sue what algorithm to use to read complete / remaining bytes using internal data structure :

int net_recv(void *ctx, unsigned char *buf, size_t len) { /* how to implement */ } int net_send(void *ctx, const unsigned char *buf, size_t len) { /* how to implement */ }

Thanks in advance.

Regards, Prakash