convert_der_to_raw_single_int() function

Convert a single integer from ASN.1 DER format to raw. \warning Der and raw buffers must not be overlapping.

Syntax

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Summary

Declaration

from psa_util.c:507

static int convert_der_to_raw_single_int(unsigned char *der, size_t der_len, unsigned char *raw, size_t coordinate_size);

Arguments

Argument

Description

der

Buffer containing the DER integer value to be converted.

der_len

Length of the der buffer in bytes.

raw

Output buffer that will be filled with the converted data. This should be at least coordinate_size bytes and it must be zeroed before calling this function.

coordinate_size

Size (in bytes) of a single coordinate in raw format.

Return value

On success, the amount of DER data parsed from the provided der buffer. MBEDTLS_ERR_ASN1_UNEXPECTED_TAG if the integer tag is missing in the der buffer. MBEDTLS_ERR_ASN1_LENGTH_MISMATCH if the integer is null (i.e. all zeros) or if the output raw buffer is too small to contain the converted raw value.

Examples

References

from examples

convert_der_to_raw_single_int() function

Syntax

Arguments

Return value

Examples

References

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