8382042: Add drill-into and path info to ASN1Formatter

[wangweij]

This enhancement adds label display and allow drilling into an OCTET STRING or BIT STRING. The label can be used in other tools like DerUtil.

For example:

o $ echo 3009040730050201050500 | xxd -r -p > bin
# Before the change
o $ java ASN1Formatter.java bin
bin
0000: 30 09                                           ; SEQUENCE [9]
0002:       04 07 30 05 02 01 05 05 00                ;   OCTET STRING [7] <Unprintable>
# After the change
o $ java ASN1Formatter.java bin
0000: 30 09                                           ; []: SEQUENCE [9]
0002:       04 07 30 05 02 01 05 05 00                ; [0]: OCTET STRING [7] (try --drill=0)
o $ java ASN1Formatter.java bin --drill=0
0000: 30 09                                           ; []: SEQUENCE [9]
0002:       04 07                                     ; [0]: OCTET STRING [7]
0004:             30 05                               ; [0c]: SEQUENCE [5]
0006:                   02 01 05                      ; [0c0]: BYTE 5.
0009:                            05 00                ; [0c1]: NULL

---

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---

Progress

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• Commit message must refer to an issue

Issue

• JDK-8382042: Add drill-into and path info to ASN1Formatter (Enhancement - P4)

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[mlbridge]

Webrevs

• 00: Full (1fa21697)

[wangweij]

/label add security

[openjdk]

@wangweij
The security label was successfully added.