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mbedtls_ecdh_context struct
\warning Performing multiple operations concurrently on the same ECDSA context is not supported; objects of this type should not be shared between multiple threads. The ECDH context structure.
Syntax
typedef struct mbedtls_ecdh_context
{
#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
mbedtls_ecp_group grp;
mbedtls_mpi d;
mbedtls_ecp_point Q;
mbedtls_ecp_point Qp;
mbedtls_mpi z;
int point_format;
mbedtls_ecp_point Vi;
mbedtls_ecp_point Vf;
mbedtls_mpi _d;
#if defined(MBEDTLS_ECP_RESTARTABLE)
int restart_enabled;
mbedtls_ecp_restart_ctx rs;
#endif
#else
uint8_t point_format;
mbedtls_ecp_group_id grp_id;
mbedtls_ecdh_variant var;
union {
mbedtls_ecdh_context_mbed mbed_ecdh;
#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
mbedtls_ecdh_context_everest everest_ecdh;
#endif
} ctx;
#if defined(MBEDTLS_ECP_RESTARTABLE)
uint8_t restart_enabled;
#endif
#endif
}
mbedtls_ecdh_context;
Fields
Field
Declared as
Description
uint8_t
The format of point export in TLS messages as defined in RFC 4492.
union {
mbedtls_ecdh_context_mbed mbed_ecdh;
#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
mbedtls_ecdh_context_everest everest_ecdh;
#endif
}
Implementation-specific context. The context in use is specified by the \c var field.
Related Functions
Found 11 other functions taking a mbedtls_ecdh_context
argument:
Function
Description
This function sets up the ECDH context with the information given. This function should be called after mbedtls_ecdh_init() but before mbedtls_ecdh_make_params(). There is no need to call this function before mbedtls_ecdh_read_params(). This is the first function used by a TLS server for ECDHE ciphersuites.
This function derives and exports the shared secret. This is the last function used by both TLS client and servers. \see ecp.h
This function initializes an ECDH context.
This function frees a context.
This function generates an EC key pair and exports its in the format used in a TLS ServerKeyExchange handshake message. This is the second function used by a TLS server for ECDHE ciphersuites. (It is called after mbedtls_ecdh_setup().) \see ecp.h
This function parses the ECDHE parameters in a TLS ServerKeyExchange handshake message. \see ecp.h
This function generates a public key and exports it as a TLS ClientKeyExchange payload. This is the second function used by a TLS client for ECDH(E) ciphersuites. \see ecp.h
This function parses and processes the ECDHE payload of a TLS ClientKeyExchange message. This is the third function used by a TLS server for ECDH(E) ciphersuites. (It is called after mbedtls_ecdh_setup() and mbedtls_ecdh_make_params().) \see ecp.h
This function sets up an ECDH context from an EC key. It is used by clients and servers in place of the ServerKeyEchange for static ECDH, and imports ECDH parameters from the EC key information of a certificate. \see ecp.h
Print a field of the ECDH structure in the SSL context to the debug output. This function is always used through the MBEDTLS_SSL_DEBUG_ECDH() macro, which supplies the ssl context, file and line number parameters. \attention This function is intended for INTERNAL usage within the library only.