Support multiple DnValue per key in DistinguishedName

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@djc is already working on this.

Since Nov 17, 2025.

  • #394 by @djc — open

Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
rust
Domain
security

Research direction

Start at the DistinguishedName::push entry point shown in the issue and trace how repeated OrganizationalUnitName values are stored and rendered. Done means successive pushes preserve all OU values so the generated subject contains each requested key-value pair.

Written by the indexing model from the issue text.

Description

I need to generate a certificate with a subject line containing multiple OU key-value pairs:

Subject: OU=certtype:instance, OU=compartment:compartment, OU=instance:instance

The problem is subsequent calls to DistinguishedName::push overwrite the previous value:

params.distinguished_name.push(DnType::OrganizationalUnitName, format!("certtype:{}", certtype));
params.distinguished_name.push(DnType::OrganizationalUnitName, format!("compartment:{}", compartment));
params.distinguished_name.push(DnType::OrganizationalUnitName, format!("instance:{}", instance));

This leaves me with a subject containing only the last value:

Subject: OU=instance:instance
Dominant language
Rust
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516
Forks
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