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@subheading asn1_get_octet_der
@anchor{asn1_get_octet_der}
@deftypefun {int} {asn1_get_octet_der} (const unsigned char * @var{der}, int @var{der_len}, int * @var{ret_len}, unsigned char * @var{str}, int @var{str_size}, int * @var{str_len})
@var{der}: DER data to decode containing the OCTET SEQUENCE.

@var{der_len}: Length of DER data to decode.

@var{ret_len}: Output variable containing the length of the DER data.

@var{str}: Pre-allocated output buffer to put decoded OCTET SEQUENCE in.

@var{str_size}: Length of pre-allocated output buffer.

@var{str_len}: Output variable containing the length of the OCTET SEQUENCE.

Extract an OCTET SEQUENCE from DER data.

@strong{Returns:} Returns @code{ASN1_SUCCESS}  on success, or an error.
@end deftypefun