asn1_read_tag - API function
int asn1_read_tag(asn1_node_const root, const char * name, int * tagValue, int * classValue);
Returns the TAG and the CLASS of one element inside a structure. CLASS can have one of these constants: ASN1_CLASS_APPLICATION, ASN1_CLASS_UNIVERSAL, ASN1_CLASS_PRIVATE or ASN1_CLASS_CONTEXT_SPECIFIC.
ASN1_SUCCESS if successful, ASN1_ELEMENT_NOT_FOUND
name is not a valid element.
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