Linux Manuals session 3

NAME gnutls_rsa_params_export_pkcs1 – API function SYNOPSIS #include <gnutls/compat.h> int gnutls_rsa_params_export_pkcs1(gnutls_rsa_params_t params, gnutls_x509_crt_fmt_t format, unsigned char * params_data, size_t * params_data_size); ARGUMENTS gnutls_rsa_params_t params Holds the RSA parameters gnutls_x509_crt_fmt_t format the format of output params. One of PEM or DER. unsigned char * params_data will contain a PKCS1 RSAPrivateKey structure PEM or DER encoded size_t *…

NAME gnutls_rsa_params_deinit – API function SYNOPSIS #include <gnutls/compat.h> void gnutls_rsa_params_deinit(gnutls_rsa_params_t rsa_params); ARGUMENTS gnutls_rsa_params_t rsa_params Is a structure that holds the parameters DESCRIPTION This function will deinitialize the RSA parameters structure. REPORTING BUGS Report bugs to <bugs [at] gnutls.org>. Home page: http://www.gnutls.org COPYRIGHT Copyright © 2001-2014 Free Software Foundation, Inc.. Copying and distribution of this file,…

NAME gnutls_rsa_params_cpy – API function SYNOPSIS #include <gnutls/compat.h> int gnutls_rsa_params_cpy(gnutls_rsa_params_t dst, gnutls_rsa_params_t src); ARGUMENTS gnutls_rsa_params_t dst Is the destination structure, which should be initialized. gnutls_rsa_params_t src Is the source structure DESCRIPTION This function will copy the RSA parameters structure from source to destination. RETURNS GNUTLS_E_SUCCESS on success, or an negative error code. REPORTING BUGS Report…

NAME gnutls_rsa_export_get_pubkey – API function SYNOPSIS #include <gnutls/compat.h> int gnutls_rsa_export_get_pubkey(gnutls_session_t session, gnutls_datum_t * exponent, gnutls_datum_t * modulus); ARGUMENTS gnutls_session_t session is a gnutls session gnutls_datum_t * exponent will hold the exponent. gnutls_datum_t * modulus will hold the modulus. DESCRIPTION This function will return the peer’s public key exponent and modulus used in the last RSA-EXPORT…

NAME gnutls_rsa_export_get_modulus_bits – API function SYNOPSIS #include <gnutls/compat.h> int gnutls_rsa_export_get_modulus_bits(gnutls_session_t session); ARGUMENTS gnutls_session_t session is a gnutls session DESCRIPTION Get the export RSA parameter’s modulus size. RETURNS The bits used in the last RSA-EXPORT key exchange with the peer, or a negative error code in case of error. REPORTING BUGS Report bugs to <bugs [at]…

NAME gnutls_rnd_refresh – API function SYNOPSIS #include <gnutls/crypto.h> void gnutls_rnd_refresh(); ARGUMENTS DESCRIPTION This function refreshes the random generator state. That is the current precise time, CPU usage, and other values are input into its state. On a slower rate input from /dev/urandom is mixed too. SINCE 3.1.7 REPORTING BUGS Report bugs to <bugs [at] gnutls.org>….

NAME gnutls_rnd – API function SYNOPSIS #include <gnutls/crypto.h> int gnutls_rnd(gnutls_rnd_level_t level, void * data, size_t len); ARGUMENTS gnutls_rnd_level_t level a security level void * data place to store random bytes size_t len The requested size DESCRIPTION This function will generate random data and store it to output buffer. This function is thread-safe and also fork-safe….

NAME gnutls_rehandshake – API function SYNOPSIS #include <gnutls/gnutls.h> int gnutls_rehandshake(gnutls_session_t session); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. DESCRIPTION This function will renegotiate security parameters with the client. This should only be called in case of a server. This message informs the peer that we want to renegotiate parameters (perform a handshake). If this function…

NAME gnutls_register_md5_handler – API function SYNOPSIS #include <gnutls/extra.h> int gnutls_register_md5_handler( void); ARGUMENTS void DESCRIPTION Register a non-libgcrypt based MD5 and HMAC-MD5 handler. This is useful if you run Libgcrypt in FIPS-mode. Normally TLS requires use of MD5, so without this you cannot use GnuTLS with libgcrypt in FIPS mode. RETURNS GNUTLS_E_SUCCESS on success, otherwise an…

NAME gnutls_record_uncork – API function SYNOPSIS #include <gnutls/gnutls.h> int gnutls_record_uncork(gnutls_session_t session, unsigned int flags); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. unsigned int flags Could be zero or GNUTLS_RECORD_WAIT DESCRIPTION This resets the effect of gnutls_record_cork(), and flushes any pending data. If the GNUTLS_RECORD_WAIT flag is specified then this function will block until the data…

NAME gnutls_record_set_timeout – API function SYNOPSIS #include <gnutls/gnutls.h> void gnutls_record_set_timeout(gnutls_session_t session, unsigned int ms); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. unsigned int ms is a timeout value in milliseconds DESCRIPTION This function sets the receive timeout for the record layer to the provided value. Use an ms value of zero to disable timeout (the…

NAME gnutls_record_set_max_size – API function SYNOPSIS #include <gnutls/gnutls.h> ssize_t gnutls_record_set_max_size(gnutls_session_t session, size_t size); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. size_t size is the new size DESCRIPTION This function sets the maximum record packet size in this connection. This property can only be set to clients. The server may choose not to accept the requested…

NAME gnutls_record_set_max_empty_records – API function SYNOPSIS #include <gnutls/gnutls.h> void gnutls_record_set_max_empty_records(gnutls_session_t session, const unsigned int i); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. const unsigned int i is the desired value of maximum empty records that can be accepted in a row. DESCRIPTION Used to set the maximum number of empty fragments that can be accepted…

NAME gnutls_record_send_range – API function SYNOPSIS #include <gnutls/gnutls.h> ssize_t gnutls_record_send_range(gnutls_session_t session, const void * data, size_t data_size, const gnutls_range_st * range); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. const void * data contains the data to send. size_t data_size is the length of the data. const gnutls_range_st * range is the range of lengths in…

NAME gnutls_record_send – API function SYNOPSIS #include <gnutls/gnutls.h> ssize_t gnutls_record_send(gnutls_session_t session, const void * data, size_t data_size); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. const void * data contains the data to send size_t data_size is the length of the data DESCRIPTION This function has the similar semantics with send(). The only difference is that…

NAME gnutls_record_recv_seq – API function SYNOPSIS #include <gnutls/gnutls.h> ssize_t gnutls_record_recv_seq(gnutls_session_t session, void * data, size_t data_size, unsigned char * seq); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. void * data the buffer that the data will be read into size_t data_size the number of requested bytes unsigned char * seq is the packet’s 64-bit sequence…

NAME gnutls_record_recv_packet – API function SYNOPSIS #include <gnutls/gnutls.h> ssize_t gnutls_record_recv_packet(gnutls_session_t session, gnutls_packet_t * packet); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. gnutls_packet_t * packet the structure that will hold the packet data DESCRIPTION This is a lower-level function thatn gnutls_record_recv() and allows to directly receive the whole decrypted packet. That avoids a memory copy, and…

NAME gnutls_record_recv – API function SYNOPSIS #include <gnutls/gnutls.h> ssize_t gnutls_record_recv(gnutls_session_t session, void * data, size_t data_size); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. void * data the buffer that the data will be read into size_t data_size the number of requested bytes DESCRIPTION This function has the similar semantics with recv(). The only difference is…

NAME gnutls_record_overhead_size – API function SYNOPSIS #include <gnutls/gnutls.h> size_t gnutls_record_overhead_size(gnutls_session_t session); ARGUMENTS gnutls_session_t session is gnutls_session_t DESCRIPTION This function will return the set size in bytes of the overhead due to TLS (or DTLS) per record. SINCE 3.2.2 REPORTING BUGS Report bugs to <bugs [at] gnutls.org>. Home page: http://www.gnutls.org COPYRIGHT Copyright © 2001-2014 Free Software…

NAME gnutls_record_get_max_size – API function SYNOPSIS #include <gnutls/gnutls.h> size_t gnutls_record_get_max_size(gnutls_session_t session); ARGUMENTS gnutls_session_t session is a gnutls_session_t structure. DESCRIPTION Get the record size. The maximum record size is negotiated by the client after the first handshake message. RETURNS The maximum record packet size in this connection. REPORTING BUGS Report bugs to <bugs [at] gnutls.org>. Home…