convert_raw_to_der_single_int() function

Convert a single raw coordinate to DER ASN.1 format. The output der buffer is filled backward (i.e. starting from its end). \warning Raw and der buffer must not be overlapping.

Syntax

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Summary

Declaration

from psa_util.c:390

static int convert_raw_to_der_single_int(const unsigned char *raw_buf, size_t raw_len, unsigned char *der_buf_start, unsigned char *der_buf_end);

Arguments

Argument

Declared as

Description

raw_buf

const unsigned char *

Buffer containing the raw coordinate to be converted.

raw_len

size_t

Length of raw_buf in bytes. This must be > 0.

der_buf_start

unsigned char *

Pointer to the beginning of the buffer which will be filled with the DER converted data.

der_buf_end

unsigned char *

End of the buffer used to store the DER output.

Return value

On success, the amount of data (in bytes) written to the DER buffer. MBEDTLS_ERR_ASN1_BUF_TOO_SMALL if the provided der buffer is too small to contain all the converted data. MBEDTLS_ERR_ASN1_INVALID_DATA if the input raw coordinate is null (i.e. all zeros).

Examples

References

from examples

convert_raw_to_der_single_int() function

Syntax

Arguments

Return value

Examples

References

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