zero-length OCTET STRING DerValue cannot be converted to byte[]

[pki-bot]

This issue was migrated from Pagure Issue #3079. Originally filed by ftweedal (@frasertweedale) on 2018-11-11 21:03:50:

• Assigned to ftweedal (@frasertweedale)

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When reading a DerValue as an OCTET STRING via getOctetString(),
if the length of the OCTET STRING is zero an exception is thrown:

java.io.IOException: short read on DerValue buffer

The following program reproduces the issue:

import java.io.IOException;
import netscape.security.util.DerValue;

class DerTest {
    public static void main(String[] args) {
        byte[] bytes = { 0x04, 0x00 };
        try {
            DerValue derVal = new DerValue(bytes);
            System.out.println(derVal.getOctetString());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

[pki-bot]

Comment from ftweedal (@frasertweedale) at 2018-11-11 22:10:36

PR: #103

[pki-bot]

Comment from ftweedal (@frasertweedale) at 2018-11-11 22:10:38

Metadata Update from @frasertweedale:

• Custom field component adjusted to None
• Custom field feature adjusted to None
• Custom field origin adjusted to None
• Custom field proposedmilestone adjusted to None
• Custom field proposedpriority adjusted to None
• Custom field reviewer adjusted to None
• Custom field type adjusted to None
• Custom field version adjusted to None