MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: smime-signed-enc-hp-shy
Message-ID: <smime-signed-enc-hp-shy@example>
From: Alice <alice@smime.example>
To: Bob <bob@smime.example>
Date: Sat, 20 Feb 2021 10:12:02 -0500
User-Agent: Sample MUA Version 1.0
HP-Outer: Subject: [...]
HP-Outer: Message-ID: <smime-signed-enc-hp-shy@example>
HP-Outer: From: alice@smime.example
HP-Outer: To: bob@smime.example
HP-Outer: Date: Sat, 20 Feb 2021 15:12:02 +0000
HP-Outer: User-Agent: Sample MUA Version 1.0
Content-Type: text/plain; charset="utf-8"; hp="cipher"

This is the
smime-signed-enc-hp-shy
message.

This is a signed-and-encrypted S/MIME message using PKCS#7
envelopedData around signedData.  The payload is a text/plain
message. It uses the Header Protection scheme from RFC 9788 with
the `hcp_shy` Header Confidentiality Policy.

--
Alice
alice@smime.example