mbedtls_ecp_tls_read_group_id() function

This function extracts an elliptic curve group ID from a TLS ECParameters record as defined in RFC 4492, Section 5.4.

Syntax

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Summary

Declaration

Definition

from ecp.h:776

int mbedtls_ecp_tls_read_group_id( mbedtls_ecp_group_id *grp, const unsigned char **buf, size_t len );

Implemented in ecp.c:925

Arguments

Argument

Description

grp

The address at which to store the group id. This must not be \c NULL.

buf

The address of the pointer to the start of the input buffer.

len

The length of the input buffer \c *buf in Bytes.

Return value

\c 0 on success. #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid. #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the group is not recognized. Another negative error code on other kinds of failure.

Notes

The read pointer \p buf is updated to point right after the ECParameters record on exit.

Examples

References

from examples

mbedtls_ecp_tls_read_group_id() function

Syntax

Arguments

Return value

Notes

Examples

References

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