diff --git a/psk/tutorial-tcp-psk.md b/psk/tutorial-tcp-psk.md index 4ebfbb5f..3e0c75db 100644 --- a/psk/tutorial-tcp-psk.md +++ b/psk/tutorial-tcp-psk.md @@ -251,80 +251,6 @@ Session resumption allows a client/server pair to re-use previously generated cr CyaSSL_Cleanup(); -## **Tutorial for adding Cyassl Security and PSK (Pre shared Keys) to a Simple Client.** - -1. Include the CyaSSL compatibility header: -``` -#include -``` - -* Change all calls from read() or recv() to CyaSSL_read(), in the simple client -``` - read(sockfd, recvline, MAXLINE) -``` -becomes -``` - CyaSSL_read(ssl, recvline, MAXLINE) -``` - -3. Change all calls from write() or send() to CySSL_write(), in the simple client ``` write(socked, send line,strlen(send line)) ``` becomes ``` CyaSSL_write(ssl, send line, strlen(sendline))``` - -4. In the main method initialize CyaSSL and CYASSL_CTX. - - CyaSSL_Init(); - - if ((ctx = CyaSSL_CTX_new(CyaTLSv1_2_client_method())) == NULL) - fprintf(stderr, "SSL_CTX_new error.\n"); - return 1; - } - -5. Create the CyaSSL object after each TCP connect and associate the file descriptor with the session: - - if ( (ssl = CyaSSL_new(ctx)) == NULL) { - fprintf(stderr, "CyaSSL_new error.\n"); - return 1; - } - - ret = CyaSSL_set_fd(ssl, sockfd); - if (ret != SSL_SUCCESS){ - return 1; - } - -6. Cleanup. After each CyaSSL object is done being used you can free it up by calling `CyaSSL_free(ssl);` -7. When completely done using SSL/TLS, free the CYASSL_CTX object by `CyaSSL_CTX_free(CTX);` -`CyaSSL_Cleanup();` - -**Now we add Pre-Shared Keys (PSK) to the CyaSSL Simple Client ** - -1. When configuring CyaSSL - `sudo ./configure --enable-psk` - `sudo make` - `sudo make install` - -* In the main method add -`CyaSSL_CTX_set_psk_client_callback(ctx, My_Psk_Client_cb);` - -3. Add the function - - static inline unsigned int My_Psk_Client_Cb(CYASSL* ssl, const char* hint, - char* identity, unsigned int id_max_len, unsigned char* key, - unsigned int key_max_len) - { - (void)ssl; - (void)hint; - (void)key_max_len; - - strncpy(identity, "Client_identity", id_max_len); - - key[0] = 26; - key[1] = 43; - key[2] = 60; - key[3] = 77; - - return 4; - } - - ## **Tutorial for adding Cyassl Security and PSK (Pre shared Keys) to a Simple Server.** 1. Include the CyaSSL compatibility header: