mbedtls_ecdsa_der_to_raw() function

Convert an ECDSA signature from DER ASN.1 format to raw format.

Syntax

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Summary

Declaration

Definition

int mbedtls_ecdsa_der_to_raw(size_t bits, const unsigned char *der, size_t der_len, unsigned char *raw, size_t raw_size, size_t *raw_len);

Implemented in psa_util.c:553

Argument

Description

bits

Size of each coordinate in bits.

der

Buffer that contains the signature in DER format.

der_len

Size of \p der in bytes.

raw

Buffer that will be filled with the converted raw signature. It can overlap with der buffer.

raw_size

Size of \p raw in bytes. Must be at least 2 * PSA_BITS_TO_BYTES(bits) bytes.

raw_len

On success it is updated with the amount of valid data (in bytes) written to \p raw. It's undefined in case of failure.

Code

Location

int mbedtls_ecdsa_der_to_raw(size_t bits, const unsigned char *der, size_t der_len,

int mbedtls_ecdsa_der_to_raw(size_t bits, const unsigned char *der, size_t der_len,

mbedtls_ecdsa_der_to_raw() calls 2 functions:

mbedtls_ecdsa_der_to_raw()

mbedtls_ecdsa_der_to_raw():

mbedtls_ecdsa_der_to_raw()

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