Function yasna::construct_der

pub fn construct_der<F>(callback: F) -> Result<Vec<u8>> where F: FnMut(&mut DERWriter) -> Result<()>

Constructs DER-encoded data as Vec<u8>.

This function uses the loan pattern: callback is called back with a DERWriter, to which the ASN.1 data is written.

Examples

use yasna;
let der = yasna::construct_der(|writer| {
    writer.write_sequence(|writer| {
        try!(writer.write_i64(10));
        try!(writer.write_bool(true));
        return Ok(());
    })
}).unwrap();
assert_eq!(der, vec![48, 6, 2, 1, 10, 1, 1, 255]);

Errors

This function just carries errors generated by callback.