



Internet Engineering Task Force (IETF)                D. K. Gillmor, Ed.
Request for Comments: 9216                                          ACLU
Category: Informational                                       April 2022
ISSN: 2070-1721


                  S/MIME Example Keys and Certificates

Abstract

   The S/MIME development community benefits from sharing samples of
   signed or encrypted data.  This document facilitates such
   collaboration by defining a small set of X.509v3 certificates and
   keys for use when generating such samples.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are candidates for any level of Internet
   Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc9216.

Copyright Notice

   Copyright (c) 2022 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   in the Revised BSD License.

Table of Contents

   1.  Introduction
     1.1.  Terminology
     1.2.  Prior Work
   2.  Background
     2.1.  Certificate Usage
     2.2.  Certificate Expiration
     2.3.  Certificate Revocation
     2.4.  Using the CA in Test Suites
     2.5.  Certificate Chains
     2.6.  Passwords
     2.7.  Secret Key Origins
   3.  Example RSA Certification Authority
     3.1.  RSA Certification Authority Root Certificate
     3.2.  RSA Certification Authority Secret Key
     3.3.  RSA Certification Authority Cross-Signed Certificate
   4.  Alice's Sample Certificates
     4.1.  Alice's Signature Verification End-Entity Certificate
     4.2.  Alice's Signing Private Key Material
     4.3.  Alice's Encryption End-Entity Certificate
     4.4.  Alice's Decryption Private Key Material
     4.5.  PKCS #12 Object for Alice
   5.  Bob's Sample
     5.1.  Bob's Signature Verification End-Entity Certificate
     5.2.  Bob's Signing Private Key Material
     5.3.  Bob's Encryption End-Entity Certificate
     5.4.  Bob's Decryption Private Key Material
     5.5.  PKCS #12 Object for Bob
   6.  Example Ed25519 Certification Authority
     6.1.  Ed25519 Certification Authority Root Certificate
     6.2.  Ed25519 Certification Authority Secret Key
     6.3.  Ed25519 Certification Authority Cross-Signed Certificate
   7.  Carlos's Sample Certificates
     7.1.  Carlos's Signature Verification End-Entity Certificate
     7.2.  Carlos's Signing Private Key Material
     7.3.  Carlos's Encryption End-Entity Certificate
     7.4.  Carlos's Decryption Private Key Material
     7.5.  PKCS #12 Object for Carlos
   8.  Dana's Sample Certificates
     8.1.  Dana's Signature Verification End-Entity Certificate
     8.2.  Dana's Signing Private Key Material
     8.3.  Dana's Encryption End-Entity Certificate
     8.4.  Dana's Decryption Private Key Material
     8.5.  PKCS #12 Object for Dana
   9.  Security Considerations
   10. IANA Considerations
   11. References
     11.1.  Normative References
     11.2.  Informative References
   Acknowledgements
   Author's Address

1.  Introduction

   The S/MIME ([RFC8551]) development community, in particular the email
   development community, benefits from sharing samples of signed and/or
   encrypted data.  Often, the exact key material used does not matter
   because the properties being tested pertain to implementation
   correctness, completeness, or interoperability of the overall system.
   However, without access to the relevant secret key material, a sample
   is useless.

   This document defines a small set of X.509v3 certificates ([RFC5280])
   and secret keys for use when generating or operating on such samples.

   An example RSA Certification Authority is supplied, and sample RSA
   certificates are provided for two "personas", Alice and Bob.

   Additionally, an Ed25519 ([RFC8032]) Certification Authority is
   supplied, along with sample Ed25519 certificates for two more
   "personas", Carlos and Dana.

   This document focuses narrowly on functional, well-formed identity
   and key material.  It is a starting point that other documents can
   use to develop sample signed or encrypted messages, test vectors, or
   other artifacts for improved interoperability.

1.1.  Terminology

   "Certification Authority" (or "CA"):  a party capable of issuing
      X.509 certificates

   "End Entity" (or "EE"):  a party that is capable of using X.509
      certificates (and their corresponding secret key material)

   "Mail User Agent" (or "MUA"):  a program that generates or handles
      email messages ([RFC5322])

1.2.  Prior Work

   [RFC4134] contains some sample certificates as well as messages of
   various S/MIME formats.  That older work has unacceptably old
   algorithm choices that may introduce failures when testing modern
   systems: in 2019, some tools explicitly marked 1024-bit RSA and
   1024-bit DSS as weak.

   This earlier document also does not use the now widely accepted
   Privacy-Enhanced Mail (PEM) encoding (see [RFC7468]) for the objects
   and instead embeds runnable Perl code to extract them from the
   document.

   It also includes examples of messages and other structures that are
   greater in ambition than this document intends to be.

   [RFC8410] includes an example X25519 certificate that is certified
   with Ed25519, but it appears to be self issued, and it is not
   directly useful in testing an S/MIME-capable MUA.

2.  Background

2.1.  Certificate Usage

   These X.509 certificates ([RFC5280]) are designed for use with S/MIME
   protections ([RFC8551]) for email ([RFC5322]).

   In particular, they should be usable with signed and encrypted
   messages as part of test suites and interoperability frameworks.

   All end-entity and intermediate CA certificates are marked with
   Certificate Policies from [TEST-POLICY] indicating that they are
   intended only for use in testing environments.  End-entity
   certificates are marked with policy 2.16.840.1.101.3.2.1.48.1 and
   intermediate CAs are marked with policy 2.16.840.1.101.3.2.1.48.2.

2.2.  Certificate Expiration

   The certificates included in this document expire in 2052.  This
   should be sufficiently far in the future that they will be useful for
   a few decades.  However, when testing tools in the far future (or
   when playing with clock-skew scenarios), care should be taken to
   consider the certificate validity window.

   Due to this lengthy expiration window, these certificates will not be
   particularly useful to test or evaluate the interaction between
   certificate expiration and protected messages.

2.3.  Certificate Revocation

   Because these are expected to be used in test suites or examples, and
   we do not expect there to be online network services in these use
   cases, we do not expect these certificates to produce any revocation
   artifacts.

   As a result, none of the certificates include either an Online
   Certificate Status Protocol (OCSP) indicator (see id-ad-ocsp as
   defined in the Authority Information Access X.509 extension in
   Section 4.2.2.1 of [RFC5280]) or a Certificate Revocation List (CRL)
   indicator (see the CRL Distribution Points X.509 extension as defined
   in Section 4.2.1.13 of [RFC5280]).

2.4.  Using the CA in Test Suites

   To use these end-entity certificates in a piece of software (for
   example, in a test suite or an interoperability matrix), most tools
   will need to accept either the example RSA CA (Section 3) or the
   example Ed25519 CA (Section 6) as a legitimate root authority.

   Note that some tooling behaves differently for certificates validated
   by "locally installed root CAs" than for pre-installed "system-level"
   root CAs).  For example, many common implementations of HTTP Public
   Key Pinning (HPKP) ([RFC7469]) only applied the designed protections
   when dealing with a certificate issued by a pre-installed "system-
   level" root CA and were disabled when dealing with a certificate
   issued by a "locally installed root CA".

   To test some tooling specifically, it may be necessary to install the
   root CA as a "system-level" root CA.

2.5.  Certificate Chains

   In most real-world examples, X.509 certificates are deployed with a
   chain of more than one X.509 certificate.  In particular, there is
   typically a long-lived root CA that users' software knows about upon
   installation, and the end-entity certificate is issued by an
   intermediate CA, which is in turn issued by the root CA.

   The example end-entity certificates in this document can be used
   either with a simple two-link certificate chain (they are directly
   certified by their corresponding root CA) or in a three-link chain.

   For example, Alice's encryption certificate (alice.encrypt.crt; see
   Section 4.3) can be validated by a peer that directly trusts the
   example RSA CA's root cert (ca.rsa.crt; see Section 3.1):

   +==============+   +-------------------+
   || ca.rsa.crt ||-->| alice.encrypt.crt |
   +==============+   +-------------------+

     Figure 1: Validating Alice's encryption certificate directly when
                      the issuing CA is a trust anchor

   And it can also be validated by a peer that only directly trusts the
   example Ed25519 CA's root cert (ca.25519.crt; see Section 6.1) via an
   intermediate cross-signed CA cert (ca.rsa.cross.crt; see
   Section 3.3):

   +================+   +------------------+   +-------------------+
   || ca.25519.crt ||-->| ca.rsa.cross.crt |-->| alice.encrypt.crt |
   +================+   +------------------+   +-------------------+

      Figure 2: Validating Alice's cert from a different trust anchor
              via an intermediate cross-signed CA certificate

   By omitting the cross-signed CA certs, it should be possible to test
   a "transvalid" certificate (an end-entity certificate that is
   supplied without its intermediate certificate) in some
   configurations.

2.6.  Passwords

   Each secret key presented in this document is represented as a PEM-
   encoded PKCS #8 ([RFC5958]) object in cleartext form (it has no
   password).

   As such, the secret key objects are not suitable for verifying
   interoperable password protection schemes.

   However, the PKCS #12 ([RFC7292]) objects do have simple textual
   passwords, because tooling for dealing with passwordless PKCS #12
   objects is underdeveloped at the time of this document.

2.7.  Secret Key Origins

   The secret RSA keys in this document are all deterministically
   derived using provable prime generation as found in [FIPS186-4] based
   on known seeds derived via SHA-256 ([SHA]) from simple strings.  The
   validation parameters for these derivations are stored in the objects
   themselves as specified in [RFC8479].

   The secret Ed25519 and X25519 keys in this document are all derived
   by hashing a simple string.  The seeds and their derivation are
   included in the document for informational purposes and to allow
   recreation of the objects from appropriate tooling.

   All RSA seeds used are 224 bits long (the first 224 bits of the
   SHA-256 digest of the origin string) and are represented in
   hexadecimal.

3.  Example RSA Certification Authority

   The example RSA Certification Authority has the following
   information:

   Name:  Sample LAMPS RSA Certification Authority

3.1.  RSA Certification Authority Root Certificate

   This certificate is used to verify certificates issued by the example
   RSA Certification Authority.

   -----BEGIN CERTIFICATE-----
   MIIDezCCAmOgAwIBAgITcBn0xb/zdaeCQlqp6yZUAGZUCDANBgkqhkiG9w0BAQ0F
   ADBVMQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQLEwhMQU1QUyBXRzExMC8GA1UEAxMo
   U2FtcGxlIExBTVBTIFJTQSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAgFw0xOTEx
   MjAwNjU0MThaGA8yMDUyMDkyNzA2NTQxOFowVTENMAsGA1UEChMESUVURjERMA8G
   A1UECxMITEFNUFMgV0cxMTAvBgNVBAMTKFNhbXBsZSBMQU1QUyBSU0EgQ2VydGlm
   aWNhdGlvbiBBdXRob3JpdHkwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB
   AQC2GGPTEFVNdi0LsiQ79A0Mz2G+LRJlbX2vNo8STibAnyQ9VzFrGJHjUhRX/Omr
   OP3rDCB2SYfBPVwd0CdC6z9qfJkcVxDc1hK+VS9vKncL0IPUYlkJwWuMpXa1Ielz
   +zCuV+gjV83Uvn6wTn39MCmymu7nFPzihcuOnbMYOCdMmUbi1Dm8TX9P6itFR3hi
   IHpSKMbkoXlM1837WaFfx57kBIoIuNjKEyPIuK9wGUAeppc5QAHJg95PPEHNHlmM
   yhBzClmgkyozRSeSrkxq9XeJKU94lWGaZ0zb4karCur/eiMoCk3YNV8L3styvcMG
   1qUDCAaKx6FZEf7hE9RN6L3bAgMBAAGjQjBAMA8GA1UdEwEB/wQFMAMBAf8wDgYD
   VR0PAQH/BAQDAgEGMB0GA1UdDgQWBBSRMI58BxcMp/EJKGU2GmccaHb0WTANBgkq
   hkiG9w0BAQ0FAAOCAQEACDXWlJGjzKadNMPcFlZInZC+Hl7RLrcBDR25jMCXg9yL
   IwGVEcNp2fH4+YHTRTGLH81aPADMdUGHgpfcfqwjesavt/mO0T0S0LjJ0RVm93fE
   heSNUHUigVR9njTVw2EBz7e2p+v3tOsMnunvm6PIDgHxx0W6mjzMX7lG74bJfo+v
   dx+jI/aXt+iih5pi7/2Yu9eTDVu+S52wsnF89BEJeV0r+EmGDxUv47D+5KuQpKM9
   U/isXpwC6K/36T8RhhdOQXDq0Mt91TZ4dJTT0m3cmo80zzcxsKMDStZHOOzCBtBq
   uIbwWw5Oa72o/Iwg9v+W0WkSBCWEadf/uK+cRicxrQ==
   -----END CERTIFICATE-----

3.2.  RSA Certification Authority Secret Key

   This secret key material is used by the example RSA Certification
   Authority to issue new certificates.

   -----BEGIN PRIVATE KEY-----
   MIIE+wIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQC2GGPTEFVNdi0L
   siQ79A0Mz2G+LRJlbX2vNo8STibAnyQ9VzFrGJHjUhRX/OmrOP3rDCB2SYfBPVwd
   0CdC6z9qfJkcVxDc1hK+VS9vKncL0IPUYlkJwWuMpXa1Ielz+zCuV+gjV83Uvn6w
   Tn39MCmymu7nFPzihcuOnbMYOCdMmUbi1Dm8TX9P6itFR3hiIHpSKMbkoXlM1837
   WaFfx57kBIoIuNjKEyPIuK9wGUAeppc5QAHJg95PPEHNHlmMyhBzClmgkyozRSeS
   rkxq9XeJKU94lWGaZ0zb4karCur/eiMoCk3YNV8L3styvcMG1qUDCAaKx6FZEf7h
   E9RN6L3bAgMBAAECggEAE3tFhsm7DpgDlro+1Sk1kjbHssR4sOBHb4zrPp6c18PO
   6T8gWuBcj1DzOzykNTzaMaDxAia4vuxVJB1mberkNHzTFqyb8bx3ceSEOCT3aoyq
   5fiFpR0L6Ba1vgg8RTvNCAIApHNa4pVk0XD8Wq+h7mlUAOYGbie5UO8/P2qWjcOz
   +zcheyYXJS/iuu0t2/F0ihEWGcXBmoc8D++n7mKst2jkAHD4wlPN2MgVqnmagpBz
   gobFNmCZyZpDS+PPTtQZ1XvdGF5Sodc+Fz+jpWun1kqxDHE4UIZzDA/HAaBgORbm
   aEZaVsOs9ZExeqOtqu2fPB7zF/1JKdRk4UJOUxS0OQKBgQDJwonP5RwvO0sYoCiw
   zuFcYTmN/hI3R3viKuxr19CH6+mvuIU85ooIHF6TiouZwhk+6+Vk7rcXdS554DT4
   2RbVrX/5i/MOzx8c8IIwoZJIasLz+vx8F4n6hyhV65bXN7AIBojMh2dt8tP2MZ/R
   VEfsk4mNmO6yKuzyAfjJziCnCQKBgQDnDH9UYUIPkq0PSvViKQFJFCB9BJPFhld2
   pIgoziw/JZzM3W3IWU0KWG7UxS0T3xmn3IX6xmWW4vX1/088ybObZWYP0edb61GM
   I9DoI5igndLgDwyOL2PFuZh5pqqc09DE+cpJW4nNoudqTNmCrjhmxNCGKgGjlD8z
   /OkSccvywwKBgDd0ReajRUziEjDxjF2UbzKx8lzJsX4KIs22GIdHqSRCvlcy80Qa
   5WN3ULNiyB350HCP69wDFMXYym5rJoQjPvh6GIuhYKv4V8fffxkYv5kx5uWiXZVJ
   7v2x+m8rMqlyv+pkyWLV8KKytHmdiBzD+oTWxF7r4ueLjtaxngzxn93pAoGBAKpR
   rR9PnroKHubSE/drUNZFLvnZwPDv6lO8T978tONL372pUT9KjR8eN31DaMpoQOpc
   BqvpSoQjBLt1nDysV2krI0RwMIOzAWc0E9C8RMvJ6+RdU50Q1BSyjvLGaKi5AAHk
   PTk8cGYVO1BCHGlX8p3XYfw0xQaHxtuVCV8eYgCvAoGBAIZeiVhc0YTJOjUadz+0
   vSOzA1arg5k2YCPCGf7z+ijM5rbMk7jrYixD6WMjTOkVLHDsVxMBpbA7GhL7TKy5
   cepBH1PVwxEIl8dqN+UoeJeBpnHo/cjJ0iCR9/aMJzI+qiUo3OMDR+UH99NIddKN
   i75GRVLAeW0Izgt09EMEiD9joDswOQYKKwYBBAGSCBIIATErMCkGCWCGSAFlAwQC
   AgQcpcG3hHYU7WYaawUiNRQotLfwnYzMotmTAt1i6Q==
   -----END PRIVATE KEY-----

   This secret key was generated using provable prime generation found
   in [FIPS186-4] using the seed
   a5c1b7847614ed661a6b0522351428b4b7f09d8ccca2d99302dd62e9.  This seed
   is the first 224 bits of the SHA-256 ([SHA]) digest of the string
   draft-lamps-sample-certs-keygen.ca.rsa.seed.

3.3.  RSA Certification Authority Cross-Signed Certificate

   If an email client only trusts the Ed25519 Certification Authority
   Root Certificate found in Section 6.1, they can use this intermediate
   CA certificate to verify any end-entity certificate issued by the
   example RSA Certification Authority.

   -----BEGIN CERTIFICATE-----
   MIIC5zCCApmgAwIBAgITcTQnnf8DUsvAdvkX7mUemYos7DAFBgMrZXAwWTENMAsG
   A1UEChMESUVURjERMA8GA1UECxMITEFNUFMgV0cxNTAzBgNVBAMTLFNhbXBsZSBM
   QU1QUyBFZDI1NTE5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MCAXDTIwMTIxNTIx
   MzU0NFoYDzIwNTIwOTI3MDY1NDE4WjBVMQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQL
   EwhMQU1QUyBXRzExMC8GA1UEAxMoU2FtcGxlIExBTVBTIFJTQSBDZXJ0aWZpY2F0
   aW9uIEF1dGhvcml0eTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALYY
   Y9MQVU12LQuyJDv0DQzPYb4tEmVtfa82jxJOJsCfJD1XMWsYkeNSFFf86as4/esM
   IHZJh8E9XB3QJ0LrP2p8mRxXENzWEr5VL28qdwvQg9RiWQnBa4yldrUh6XP7MK5X
   6CNXzdS+frBOff0wKbKa7ucU/OKFy46dsxg4J0yZRuLUObxNf0/qK0VHeGIgelIo
   xuSheUzXzftZoV/HnuQEigi42MoTI8i4r3AZQB6mlzlAAcmD3k88Qc0eWYzKEHMK
   WaCTKjNFJ5KuTGr1d4kpT3iVYZpnTNviRqsK6v96IygKTdg1Xwvey3K9wwbWpQMI
   BorHoVkR/uET1E3ovdsCAwEAAaN8MHowDwYDVR0TAQH/BAUwAwEB/zAXBgNVHSAE
   EDAOMAwGCmCGSAFlAwIBMAIwDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBSRMI58
   BxcMp/EJKGU2GmccaHb0WTAfBgNVHSMEGDAWgBRropV9uhSb5C0E0Qek0YLkLmuM
   tTAFBgMrZXADQQBnQ+0eFP/BBKz8bVELVEPw9WFXwIGnyH7rrmLQJSE5GJmm7cYX
   FFJBGyc3NWzlxxyfJLsh0yYh04dxdM8R5hcD
   -----END CERTIFICATE-----

4.  Alice's Sample Certificates

   Alice has the following information:

   Name:  Alice Lovelace

   Email Address:  alice@smime.example

4.1.  Alice's Signature Verification End-Entity Certificate

   This certificate is used for verification of signatures made by
   Alice.

   -----BEGIN CERTIFICATE-----
   MIIDzzCCAregAwIBAgITN0EFee11f0Kpolw69Phqzpqp1zANBgkqhkiG9w0BAQ0F
   ADBVMQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQLEwhMQU1QUyBXRzExMC8GA1UEAxMo
   U2FtcGxlIExBTVBTIFJTQSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAgFw0xOTEx
   MjAwNjU0MThaGA8yMDUyMDkyNzA2NTQxOFowOzENMAsGA1UEChMESUVURjERMA8G
   A1UECxMITEFNUFMgV0cxFzAVBgNVBAMTDkFsaWNlIExvdmVsYWNlMIIBIjANBgkq
   hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtPSJ6Fg4Fj5Nmn9PkrYo0jTkfCv4TfA/
   pdO/KLpZbJOAEr0sI7AjaO7B1GuMUFJeSTulamNfCwDcDkY63PQWl+DILs7GxVwX
   urhYdZlaV5hcUqVAckPvedDBc/3rz4D/esFfs+E7QMFtmd+K04s+A8TCNO12DRVB
   DpbP4JFD9hsc8prDtpGmFk7rd0q8gqnhxBW2RZAeLqzJOMayCQtws1q7ktkNBR2w
   ZX5ICjecF1YJFhX4jrnHwp/iELGqqaNXd3/Y0pG7QFecN7836IPPdfTMSiPR+peC
   rhJZwLSewbWXLJe3VMvbvQjoBMpEYlaJBUIKkO1zQ1Pq90njlsJLOwIDAQABo4Gv
   MIGsMAwGA1UdEwEB/wQCMAAwFwYDVR0gBBAwDjAMBgpghkgBZQMCATABMB4GA1Ud
   EQQXMBWBE2FsaWNlQHNtaW1lLmV4YW1wbGUwEwYDVR0lBAwwCgYIKwYBBQUHAwQw
   DgYDVR0PAQH/BAQDAgbAMB0GA1UdDgQWBBS79syyLR0GEhyXrilqkBDTIGZmczAf
   BgNVHSMEGDAWgBSRMI58BxcMp/EJKGU2GmccaHb0WTANBgkqhkiG9w0BAQ0FAAOC
   AQEAc4miNqfOqaBpI3f+CpJDhxtuZ2P9HjQEQ+v6BdP7GKJ19naIs3BjJOd64roA
   KHAp+c284VvyVXWJ99FMX8q2ZUQMxH+xh6oAfzcozmnd6XaVWHg4eHIjSo27PmhK
   E1oAJKKhDbdbEcZXL2+x1V+duGymWtaD01DZZukKYr7agyHahiXRn/C9cy31wbqN
   sy9x0fjPQg6+DqatiQpMz9EIae6aCHHBhOiPU7IPkazgPYgkLD59fk4PGHnYxs1F
   hdO6zZk9E8zwlc1ALgZa/iSbczisqckN3qGehD2s16jMhwFXLJtBiN+uCDgNG/D0
   qyTbY4fgKieUHx/tHuzUszZxJg==
   -----END CERTIFICATE-----

4.2.  Alice's Signing Private Key Material

   This private key material is used by Alice to create signatures.

   -----BEGIN PRIVATE KEY-----
   MIIE+gIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQC09InoWDgWPk2a
   f0+StijSNOR8K/hN8D+l078oullsk4ASvSwjsCNo7sHUa4xQUl5JO6VqY18LANwO
   Rjrc9BaX4MguzsbFXBe6uFh1mVpXmFxSpUByQ+950MFz/evPgP96wV+z4TtAwW2Z
   34rTiz4DxMI07XYNFUEOls/gkUP2GxzymsO2kaYWTut3SryCqeHEFbZFkB4urMk4
   xrIJC3CzWruS2Q0FHbBlfkgKN5wXVgkWFfiOucfCn+IQsaqpo1d3f9jSkbtAV5w3
   vzfog8919MxKI9H6l4KuElnAtJ7BtZcsl7dUy9u9COgEykRiVokFQgqQ7XNDU+r3
   SeOWwks7AgMBAAECggEAFKD2DG9A1u77q3u3p2WDH3zueTtiqgaT8u8XO+jhOI/+
   HzoX9eo8DIJ/b/G3brwHyfh17JFvLH1zbgsn5bghJTz3r+JcZZ5l3srqMV8t8zjI
   JEHOKC3szH8gYVKWrIgBAqOt1H9Ti8J2oKk2aymqBFr3ZXpBUCTWpEz2s3FMBUUI
   qCEsAJqsdEch+kt43X5kvAom7LC1DHiE6RKfhMEub/LGNHSwY4dmzhaG6p95FJ1h
   s8HoURI2ReVpsTadaKd3KoYNc1lcffmwdZs/hFs7xmmwXKMmlonh1mzHqD1/BqeJ
   Hc8MP4ueDdyVgIe/uVtlQ9NcRQbuokkDyDYMYV6hzQKBgQD75ahYGFGZznRKtSE3
   w/2rUqTYIWxx2PQz5G58PcsTZM89Hj4aZOoLmudHbrTQHluRNcHoXEI62rs0cVPs
   D7IlZOLfs+SSTeNEXxD57mjyyufpV65OcNc1mSJAmMX2jWQ8ndnOuWPcc5J6fNvT
   au0a7ZBOaeKHnA8XXL3GYilM9QKBgQC35xKi7f2JmGtsYY21tfRuDUm6EjhMW6b7
   GWnI9IXF8TGj15s7oDEYvqSPTJdB6PAb/tZwdbj9mB4qj176x1kB/N7GO974O8UP
   /PdHkU7duyf5nRq1mrI+yGFHVsGD313rc+akYdKcC207e6IRMST1ZFoznC6qNgpi
   nNTuDz4ZbwKBgA5Dd9/dKKm77gvY69Objn6oBFuUsO5VaaaSlcsFOL2VZMLCNqQJ
   +NLFZ7k8xJJQVcEIOT2uE7X/csBKdoUUcnL5nnsqVZQPQwI5G937KQgugylMZLte
   WmFXlX/w5qzKXtWr3ox9JPFzveSfs1bqZBi1QQmfp0skhBo/jyNvpYUNAoGAMNkw
   GhcdQW87GY7QFXQ/ePwOmV49lgrCT/BwKPDKl8l5ZgvfL/ddEzWQgH/XraoyHT2T
   uEuM18+QM73hfLt26RBCHGXK1CUMMzL+fAQc7sjH1YXlkleFASg4rrpcrKqoR+KB
   YSiayNhAK4yrf+WN66C8VPknbA7us0L1TEbAOAECgYEAtwRiiQwk3BlqENFypyc8
   0Q1pxp3U7ciHi8mni0kNcTqe57Y/2o8nY9ISnt1GffMs79YQfRXTRdEm2St6oChI
   9Cv5j74LHZXkgEVFfO2Nq/uwSzTZkePk+HoPJo4WtAdokZgRAyyHl0gEae8Rl89e
   yBX7dutONALjRZFTrg18CuegOzA5BgorBgEEAZIIEggBMSswKQYJYIZIAWUDBAIC
   BBySyJ1DMNPY4x1P3pudD+bp/BQhQd1lpF5bQ28F
   -----END PRIVATE KEY-----

   This secret key was generated using provable prime generation found
   in [FIPS186-4] using the seed
   92c89d4330d3d8e31d4fde9b9d0fe6e9fc142141dd65a45e5b436f05.  This seed
   is the first 224 bits of the SHA-256 ([SHA]) digest of the string
   draft-lamps-sample-certs-keygen.alice.sign.seed.

4.3.  Alice's Encryption End-Entity Certificate

   This certificate is used to encrypt messages to Alice.

   -----BEGIN CERTIFICATE-----
   MIIDzzCCAregAwIBAgITDy0lvRE5l0rOQlSHoe49NAaKtDANBgkqhkiG9w0BAQ0F
   ADBVMQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQLEwhMQU1QUyBXRzExMC8GA1UEAxMo
   U2FtcGxlIExBTVBTIFJTQSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAgFw0xOTEx
   MjAwNjU0MThaGA8yMDUyMDkyNzA2NTQxOFowOzENMAsGA1UEChMESUVURjERMA8G
   A1UECxMITEFNUFMgV0cxFzAVBgNVBAMTDkFsaWNlIExvdmVsYWNlMIIBIjANBgkq
   hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmpUp+ovBouOP6AFQJ+RpwpODxxzY60n1
   lJ53pTeNSiJlWkwtw/cxQq0t4uD2vWYB8gOUH/CVt2Zp1c+auzPKJ2Zu5mY6kHm+
   hVB+IthjLeI7Htg6rNeuXq50/TuTSxX5R1I1EXGt8p6hAQVeA5oZ2afHg4b97enV
   8gozR0/Nkug4AkXmbk7THNc8vvjMUJanZ/VmS4TgDqXjWShplcI3lcvvBZMswt41
   /0HJvmSwqpS6oQcAx3Weag0yCNj1V9V9yu/3DjcYbwW2lJf5NbMHbM1LY4X5chWf
   NEbkN6hQury/zxnlsukgn+fHbqvwDhJLAgFpW/jA/EB/WI+whUpqtQIDAQABo4Gv
   MIGsMAwGA1UdEwEB/wQCMAAwFwYDVR0gBBAwDjAMBgpghkgBZQMCATABMB4GA1Ud
   EQQXMBWBE2FsaWNlQHNtaW1lLmV4YW1wbGUwEwYDVR0lBAwwCgYIKwYBBQUHAwQw
   DgYDVR0PAQH/BAQDAgUgMB0GA1UdDgQWBBSiU0HVRDyAKRV8ASPw546vzfN3DzAf
   BgNVHSMEGDAWgBSRMI58BxcMp/EJKGU2GmccaHb0WTANBgkqhkiG9w0BAQ0FAAOC
   AQEAgUl4oJyxMpwWpAylOvK6NEbMl1gD5H14EC4Muxq1u0q2XgXOSBHI6DfX/4LD
   sfx7fSIus8gWVY3WqMeuOA7IizkBD+GDEu8uKveERRXZncxGwy2MfbH1Ib3U8QzT
   jqB8+dz2AwYeMxODWq9opwtA/lTOkRg8uuivZfg/m5fFo/QshlHNaaTDVEXsU4Ps
   98Hm/3gznbvhdjFbZbi4oZ3tAadRlE5K9JiQaJYOnUmGpfB8PPwDR6chMZeegSQA
   W++OIKqHrg/WEh4yiuPfqmAvX2hZkPpivNJYdTPUXTSO7K459CyqbqG+sNOo2kc1
   nTXl85RHNrVKQK+L0YWY1Q+hWA==
   -----END CERTIFICATE-----

4.4.  Alice's Decryption Private Key Material

   This private key material is used by Alice to decrypt messages.

   -----BEGIN PRIVATE KEY-----
   MIIE+gIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCalSn6i8Gi44/o
   AVAn5GnCk4PHHNjrSfWUnnelN41KImVaTC3D9zFCrS3i4Pa9ZgHyA5Qf8JW3ZmnV
   z5q7M8onZm7mZjqQeb6FUH4i2GMt4jse2Dqs165ernT9O5NLFflHUjURca3ynqEB
   BV4DmhnZp8eDhv3t6dXyCjNHT82S6DgCReZuTtMc1zy++MxQlqdn9WZLhOAOpeNZ
   KGmVwjeVy+8FkyzC3jX/Qcm+ZLCqlLqhBwDHdZ5qDTII2PVX1X3K7/cONxhvBbaU
   l/k1swdszUtjhflyFZ80RuQ3qFC6vL/PGeWy6SCf58duq/AOEksCAWlb+MD8QH9Y
   j7CFSmq1AgMBAAECggEADgxoWEDDRE5yEZ+s7TMw+WH2o+3XOOrryqnsLbOyv34I
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   /D+idXrUef5Y23rClBxXH0g1UnSGXnpUH4ehV6p1lvZMh4OJKEoMC4cpyd1SzXrw
   +VGCc1+pXv/tTW3Rb2qoWO9JoWY+Epcssrw5N8OFIFODh4QfbLN6pVTt28aQ4pf/
   1KhLoapjFzXSYp/jrcNjYJ9qRdSAbZsKOJ2yZ0yqjLHDCDipFty+W0pkUZcJhsgu
   Cg1Stt7tKgSvAV/nEjN8e/vA91/AACKBCNcLzEoLgQKBgQC4eTM6BDCzlusXJBK4
   SRC/WwUthJZzfOk2Gmwr0DCTRYhWQSDjBfiQNboazHObVPz45qP10fOt2iPEHeX+
   VWAXTNrN69M9lEzxygA3s76lAejBR3FbLWkzLYqPB3oZwSIE7CrWHTXJipFWZv+X
   FG1R418fnRCUMJ4j85qem5iyqQKBgQDWhQMJu7FC02fr83qsIdLwqhiDtTpwUN3j
   qfp7JoEZOxbm3TgM1xPAkrQTUgfr2ZhXGtUwsuKHyifxQEycrTkBOg0gqAfG0fnv
   ybyXK6/guctHJQiy64lL39kPuvQkKB+YO60B/oF6zbyFvqanoKXjpspObN3i3yBU
   X5/EOu/LLQKBgQCUVwHWeWAgSg+pgBx9jGOnPK4hOCkznRJ7qyuo37Tv+E317lFf
   vYFvlYSd4CJmmiUCkZTvK3FkL7HrFo/HwSeQFQEt7aDkN8jX9bPPFv8K+UoNgkGp
   LA8YVFrDQSPyadfNVYvsuXhzJLZSYGjPOGHgI5JufYLDZ4UDK/T97ekQYQKBgDDM
   ORCxvXTyGiW2USVu3EkaqFDtnMmH27G6LNxuudc/dco2cFWbZ0bbGFN8yYiBCwJl
   fDGDv7wb5FIgykypqtn4lpvjHUHA6hX90gShT3TTTsZ0SjJJGgZEeV/2qyq+ZdF/
   Ya+ecV26BzR1Vfuzs4jBnCuS4DaHgxcuWW2N6pZRAoGAWTovk3xdtE0TZvDerxUY
   l8hX+vwJGy7uZjegi4cFecSkOR4iekVxrEvEGhpNdEB2GqdLgp6Q6GPdalCG2wc4
   7pojp/0inc4RtRRf3nZHaTy00bnSe/0y+t0OUbkRMtXhnViVhCcOt6BUcsHupbu2
   Adub72KLk+gvASDduuatGjqgOzA5BgorBgEEAZIIEggBMSswKQYJYIZIAWUDBAIC
   BBwc90hJ90RfRmxCciUfX5a3f6Bpiz6Ys/Hugge/
   -----END PRIVATE KEY-----

   This secret key was generated using provable prime generation found
   in [FIPS186-4] using the seed
   1cf74849f7445f466c4272251f5f96b77fa0698b3e98b3f1ee8207bf.  This seed
   is the first 224 bits of the SHA-256 ([SHA]) digest of the string
   draft-lamps-sample-certs-keygen.alice.encrypt.seed.

4.5.  PKCS #12 Object for Alice

   This PKCS #12 ([RFC7292]) object contains the same information as
   presented in Sections 3.3, 4.1, 4.2, 4.3, and 4.4.

   It is locked with the simple five-letter password alice.

   -----BEGIN PKCS12-----
   MIIX+AIBAzCCF8AGCSqGSIb3DQEHAaCCF7EEghetMIIXqTCCBI8GCSqGSIb3DQEH
   BqCCBIAwggR8AgEAMIIEdQYJKoZIhvcNAQcBMBwGCiqGSIb3DQEMAQMwDgQIWQKs
   PyUaB9YCAhTCgIIESCsrTOUTY394FyrjkeCBSV1dw7I3o9oZN7N6Ux2KyIamsWiJ
   77t7RL1/VSxSBLjVV8Sn5+/o3mFjr5NkyQbWuky33ySVy3HZUdZc2RTooyFEdRi8
   x82dzEaVmab7pW4zpoG/IVR6OTizcWJOooGoE0ORim6y2G+iRZ3ePBUq0+8eSNYW
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   6T9EpZldksDjr5N+zFhSLoRwABGRU8jXSU9AEsem9DFxoqZq8VsQcegQFY6aJcZO
   Xel7IECIAgK8nZlKCTzyNVALxeFw0ijWnW4ltDaqcC6GepmuINiqqdD94YAOHxRl
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   njUeIENr4B/+kXULwVDcvMFHqUFJMkFai8FUga7gyipZ+654clGgJjnNBO1va8Jc
   dtdPRRW4gwdrVn8u8J78KBzt6ChkrpKRV8VeWKBk9lhcT0ZNpJnNqhDrkfzHBqP0
   Uo133I7P7C+h9sNDI153W6IOIodyQE0Av1WxHo4y/1d1VeGDaB7hOSDq9ZMpm9n1
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   MQweCgBhAGwAaQBjAGUwIwYJKoZIhvcNAQkVMRYEFKJTQdVEPIApFXwBI/Dnjq/N
   83cPMIIFlAYJKoZIhvcNAQcBoIIFhQSCBYEwggV9MIIFeQYLKoZIhvcNAQwKAQKg
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   4q8UkERAsYHcEhdD2hGRCL7ou9jTtrr4RgZpa5V9CJcBO0t4bqy2lUefOpm6no+R
   X840uyM4q5Q+cfH1rTQ1a/a+gLglbptoEkH/4dfR3ELYiXcM5UrBYTJOHcyME8c+
   TXbpf7kiplTtlsrlZyU5zrWcxngrBxwFA+O85W/uVR3QZSW+EGx/VCYwGruZlNyt
   BvBYjsYsnC+yKYXbqL81DgOePy+eh6VX64SwBLXcWcY+NK2EZrhzrUFjl+PXFKY3
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   qMvP8gOpHOsVlXXE76c5rUcZCZD+gGv1avO7YttWqbDqLj6oQEIJ8LX0Qvwd0YEh
   etE0bJ5uv2njhQDhLkH/JIbmFSgJZeM8dtKHb8f5wZc2B+nXGB+TFboGzSuP7gaW
   u1vKsJNqT/J/FYEqcamI2F+td7z1sGfbR9ckAcxXeb2uPVbCJ1a50gRlz9qVm5Hb
   5f53X7aoQQp3F3LDGQmJ+GFQ/oXXwabqn4TvNO9KDhxpGcMMU9RnugUfNU9GBec0
   vfrzmVKZdmJ36HOmMnLvgRakRhCV3kGABXY83hwUv17E1qASLKcAWIachkCCGpBG
   yGtP2IOZTn7PsLJR1BzKnePa7MgFcgoCToIpdQnCTtAsalmBm1s480LN3GB5ojeG
   bQvNf9TAviA0tg5VuT4/O48V6uYSJsIZsawm3tGA/LjxyfV1aLddQT5Zf5ZX9BX+
   K/PB4oYAFxtUpMK/aL5G1MvppUJ9CjqAtnoKE+EkdQmyZ1VoDO9ih44zuRx6XV4A
   EYafNB8ygjRHGsvPW0/M0Es0w16wzJHTuf/15fD/nH7Xh5MzhCF0CtvLn8v+S1Po
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   ZT92M1BgwJA8ZcydtiiunRNAH5iWLSPloUpOD1v6En+rat+PoyRXIy2fLHBL25aw
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   WTYt3KXPzrThJJGZnnXZRTGfIi6vp8RsnPX35+Dxe/Lp3gXDdIJeWG6XVA8t3fsp
   coTqPkm/XGNMmOZ81KX/ReVdP+dC93sov2DuDZbYGPmHlD47bOOiA68GD64DEuNt
   Q8MhWk8VRR1FqcuwB0T0bc+SIKEINkvYmDFAMBkGCSqGSIb3DQEJFDEMHgoAYQBs
   AGkAYwBlMCMGCSqGSIb3DQEJFTEWBBS79syyLR0GEhyXrilqkBDTIGZmczAvMB8w
   BwYFKw4DAhoEFO/nnMx9hi1oZ0S+JkJAu+H3/jPzBAj1OQCGvaJQwQICKAA=
   -----END PKCS12-----

5.  Bob's Sample

   Bob has the following information:

   Name:  Bob Babbage

   Email Address:  bob@smime.example

5.1.  Bob's Signature Verification End-Entity Certificate

   This certificate is used for verification of signatures made by Bob.

   -----BEGIN CERTIFICATE-----
   MIIDyjCCArKgAwIBAgITaqOkD33fBy/kGaVsmPv8LghbwzANBgkqhkiG9w0BAQ0F
   ADBVMQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQLEwhMQU1QUyBXRzExMC8GA1UEAxMo
   U2FtcGxlIExBTVBTIFJTQSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAgFw0xOTEx
   MjAwNjU0MThaGA8yMDUyMDkyNzA2NTQxOFowODENMAsGA1UEChMESUVURjERMA8G
   A1UECxMITEFNUFMgV0cxFDASBgNVBAMTC0JvYiBCYWJiYWdlMIIBIjANBgkqhkiG
   9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5nAF0glRof9NjBKke6g+7RLrOgRfwQjcH+2z
   m0Af67FJRNrEwTuOutlWamUA3p9+wb7XqizVHOQhVesjwgp8PJpo8Adm8ar84d2t
   tey1OVdxaCJuNe7SJjfrwShB6NvAm7S8CDG3+EapkO9fzn2pWwaREQ6twWtHi1QT
   51PduRtiQ1oqsuJk8LBDgUMZlKUsaXfF8GKzJlGuaLRl5/3Kfr9+b6VkCDuxTZYL
   Zxt6+a3/QkaC3I9m2ygPubtHFJB5P5+s8boROSKm1OB1gsLow8eF9S7OtcGGeooZ
   JiJUQCR14NaU5bIyfKEZV2YStXwdztoEJJ2fRURIK+8YnwlB3QIDAQABo4GtMIGq
   MAwGA1UdEwEB/wQCMAAwFwYDVR0gBBAwDjAMBgpghkgBZQMCATABMBwGA1UdEQQV
   MBOBEWJvYkBzbWltZS5leGFtcGxlMBMGA1UdJQQMMAoGCCsGAQUFBwMEMA4GA1Ud
   DwEB/wQEAwIGwDAdBgNVHQ4EFgQUF8WEe9Cn73aQOLizbwi8krWeK5QwHwYDVR0j
   BBgwFoAUkTCOfAcXDKfxCShlNhpnHGh29FkwDQYJKoZIhvcNAQENBQADggEBAG7e
   QY6Px7WZC5vCbF5hjOitxoz3oyM+LRcSTGWoYXdmlwsNUzy31pE3dtADvevRtsP8
   uN7xyfK6XZBzhShA/BtkkqYGiFvXDpluOxWmqC0WPmc1PNK2mHil+pGMfvnUwnxd
   6gKcHED5p+bUhDyIH2fy9hGyeOUs8nvi+7/HwBipN+nA/PfsPn+aU4l1K6qDoG/i
   kwyuiWcFFlc5yE5rkAe2J0/a4+HtzNmTK4jB/4GbyI6xlUszPlEqKE+Es10Xut/y
   UWL5nKKaqpRRd07Pq371MpFQs2+zXt4fGheKzZU3XXrIPcAPyJjWiyU1DzpqgSJM
   OIp/HtXdFscHb9+Qic8=
   -----END CERTIFICATE-----

5.2.  Bob's Signing Private Key Material

   This private key material is used by Bob to create signatures.

   -----BEGIN PRIVATE KEY-----
   MIIE+wIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDmcAXSCVGh/02M
   EqR7qD7tEus6BF/BCNwf7bObQB/rsUlE2sTBO4662VZqZQDen37BvteqLNUc5CFV
   6yPCCnw8mmjwB2bxqvzh3a217LU5V3FoIm417tImN+vBKEHo28CbtLwIMbf4RqmQ
   71/OfalbBpERDq3Ba0eLVBPnU925G2JDWiqy4mTwsEOBQxmUpSxpd8XwYrMmUa5o
   tGXn/cp+v35vpWQIO7FNlgtnG3r5rf9CRoLcj2bbKA+5u0cUkHk/n6zxuhE5IqbU
   4HWCwujDx4X1Ls61wYZ6ihkmIlRAJHXg1pTlsjJ8oRlXZhK1fB3O2gQknZ9FREgr
   7xifCUHdAgMBAAECggEABcQg1fTtieZ+O/aNdU149NK0qx97GLTBjIguQEDDBVFK
   2lu4PhBg9AdgAUqLH1PE+eq65JaGZwvFH8X1Ms2AKiRzYsPOQIoJ4n1hc69uiEN9
   Ykcv4QHOvvqtCtWYjJyb5By9WPeLH6QynJ6FlBoSqxhURSWyYfTuwqt1OHEhsUuH
   d3N5BmbFiRBNj4aIA9zz+i5xL0m33kMKai/Ajj3sI0AJsZ5ZVAhYbC8sCt1Xevb6
   i41p9S6GSwGC19by+1y9WC1QGtb5GDotvChMvmZS/O3NeDc6xC/LZoQcHNVgiZd7
   f1g6iEkJlCYK+D7xsd7Y630w75Haj0vnlhiJObSA+wKBgQDxv8jp2D6IVRGgYfaC
   nUU3Mg70wagX1fgPHO9Sk6e9c8CgORh2uwWjpTawu88xBGFyZ+xnWqr7GCNsltas
   3m94ri4A4R94+5uL8+oOLC26gMDfzATd1Q3k/h919YLk89tonQEUbCFZJdphThEb
   vg2W+nNsEVcQGuClzhX0AyGMswKBgQD0BYk3sdGQbBA/hYD1EYsZfYebUiYv2lTt
   VGRgTohKFclRAWOtGP9YRbKyEVkBLhjgkXzS9xGqKywP71z9Iny+zDGbzk8ElB/g
   lS7GFGX50TG0ISfaFWTYdxt4mN9pduZE2blT/26uyU8DXCEBhF/OqhwQjJqKTYTT
   Rl3Ara5fLwKBgQDQyVtjIyD2q8naY2D8c4mo3vHtzyc21tQzcUD8Z4vSYps1hbos
   KN/48qJmRv3tjqP+o+SXasYKsFE/4pIroLxTVNNkbQm6ektfttwpO1yPG834OwLk
   97HVWOig/tX6mOWg1yBsm+q9TKTrrvm1pRGlmE6BQgSYYy4r5O4u3VlnYwKBgQCl
   B4FvWyDhTVQHwaAfHUg3av/k+T++KSg6gVKJF1Nw1x8ZW5kvnbJC3pAlgTnyZFyK
   s5n5iwI1VZEtDbKTt1kqKCp8tqAV9p9AYWQKrgzxUJsOuUWcZc+X3aWEf87IIpNE
   iQKfXiZaquZ23T2tKvsoZz8nqg9x7U8hG3uYLV26HQKBgCOJ/C21yW25NwZ5FUdh
   PsQmVH7+YydJaLzHS/c7PrOgQFRMdejvAku/eYJbKbUv7qsJFIG4i/IG0CfVmu/B
   ax5fbfYZtoB/0zxWaLkIEStVWaKrSKRdTrNzTAOreeJKsY4RNp6rvmpgojbmIGA1
   Tg8Mup0xQ8F4d28rtUeynHxzoDswOQYKKwYBBAGSCBIIATErMCkGCWCGSAFlAwQC
   AgQc9K+qy7VHPzYOBqwy4AGI/kFzrhXJm88EOouPbg==
   -----END PRIVATE KEY-----

   This secret key was generated using provable prime generation found
   in [FIPS186-4] using the seed
   f4afaacbb5473f360e06ac32e00188fe4173ae15c99bcf043a8b8f6e.  This seed
   is the first 224 bits of the SHA-256 ([SHA]) digest of the string
   draft-lamps-sample-certs-keygen.bob.sign.seed.

5.3.  Bob's Encryption End-Entity Certificate

   This certificate is used to encrypt messages to Bob.

   -----BEGIN CERTIFICATE-----
   MIIDyjCCArKgAwIBAgITMHxHQA+GJjocYtLrgy+WwNeGlDANBgkqhkiG9w0BAQ0F
   ADBVMQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQLEwhMQU1QUyBXRzExMC8GA1UEAxMo
   U2FtcGxlIExBTVBTIFJTQSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAgFw0xOTEx
   MjAwNjU0MThaGA8yMDUyMDkyNzA2NTQxOFowODENMAsGA1UEChMESUVURjERMA8G
   A1UECxMITEFNUFMgV0cxFDASBgNVBAMTC0JvYiBCYWJiYWdlMIIBIjANBgkqhkiG
   9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqtHAlBNMiBIk8iJqwHk/yDoFWwj8P9Z1uYdq
   1aqIuofvjoAyjdA8TbsBRGdmvaIOSQOepsNjW1ko7lE8HlDs9JHn1E+tzH3mKfn+
   G2erY+alkMJTXPvMAUdCA8+e1OJ7k91gYXDpzIWrP3Kc0xTlsJ8tGJ6mhydJX3wP
   0/HuyHpfKQQfDusPH8S5yidPciWuB7Wj0X4xY1pUAz2rSSAlnGvhEzKFbW43BPjY
   XPUnRWMtXFya1djq6Eb9M/klbhdZheDLLsjLUSXYU70r9VXGM/qcjd/NhWYphCeB
   cqswaM5mXLYdm0mFmqoecF62mUE0DiNdhwKTtnefd0cll+D3FQIDAQABo4GtMIGq
   MAwGA1UdEwEB/wQCMAAwFwYDVR0gBBAwDjAMBgpghkgBZQMCATABMBwGA1UdEQQV
   MBOBEWJvYkBzbWltZS5leGFtcGxlMBMGA1UdJQQMMAoGCCsGAQUFBwMEMA4GA1Ud
   DwEB/wQEAwIFIDAdBgNVHQ4EFgQUSrOsMVMCSZxN42554CVhlT6IYiUwHwYDVR0j
   BBgwFoAUkTCOfAcXDKfxCShlNhpnHGh29FkwDQYJKoZIhvcNAQENBQADggEBAC2c
   Y8FgaxgB+Dx9gAFj35ae1vgzYiWI3Ax3FSxogo/GzpK//LB4215oeBuKXbm0ixBn
   4nojxD7PMlM0i+ilAvVNJNaHY9TtgIgq8V/C0C7vL8SdBN01e5ZRI764ohu9ivYv
   Ixvvt7gzvSTpe+NUT1i09xNgsC8v19WB/BwkqMAgDqMxqCxT4fyrvVwpxNBke75j
   E6Q3xCjfdOWYcfMLK7EsTSgimYuonZjN7v/yqTdjn/iVH+agL/2MlSfiU36w/Yf1
   7EM09uKGH/Javh+2Vjd0j8rE/q2Iaac5VI91M6xz5oDZUknycBKKinR+nJWMt5AK
   UAaL2Mjl3YtrUGBpxxY=
   -----END CERTIFICATE-----

5.4.  Bob's Decryption Private Key Material

   This private key material is used by Bob to decrypt messages.

   -----BEGIN PRIVATE KEY-----
   MIIE/AIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQCq0cCUE0yIEiTy
   ImrAeT/IOgVbCPw/1nW5h2rVqoi6h++OgDKN0DxNuwFEZ2a9og5JA56mw2NbWSju
   UTweUOz0kefUT63MfeYp+f4bZ6tj5qWQwlNc+8wBR0IDz57U4nuT3WBhcOnMhas/
   cpzTFOWwny0YnqaHJ0lffA/T8e7Iel8pBB8O6w8fxLnKJ09yJa4HtaPRfjFjWlQD
   PatJICWca+ETMoVtbjcE+Nhc9SdFYy1cXJrV2OroRv0z+SVuF1mF4MsuyMtRJdhT
   vSv1VcYz+pyN382FZimEJ4FyqzBozmZcth2bSYWaqh5wXraZQTQOI12HApO2d593
   RyWX4PcVAgMBAAECggEAEvPt6aAQjEJzHfiKnqt1U7p4UKb5Ef4yFrE7PdTLkeK2
   RjncIhb6MeevVs8gO6co7Zn8tuUT95U3cOXLhVOWTvaHYeurTXaknICz3IeOoSl8
   skiVZko70uJ8pR6asWUlr/zOjlEwZ7RnEUWet97oM0YeA07LDFDkF7eUq//6bfzT
   ewr/QfDDsv+erwJBh+9CRHOJyTuDH1WeGxYV8VK3M6VhdTjFxXxFhrQ4pBe5J/UA
   17Bd2GM8Urg6VYzVo6x4ajnc1H/ezYLdc459poTffv6Fg2trqFVAj2IrQlAeqjda
   lemsa6Np801mUGknq3fjKS13RYGBv/48rCHOT8eRgQKBgQDM5TuS4ANQjOYoOgtF
   xoVjbVlndOo+SmdFkZihzQHxcbLY9HXe5HlbLf1IMXz/nERxl+SmYuuJk0EdiM9r
   HOCcHRLfBmC7t0GdVvLDHSAX8Ec47LbtKZqyM1U9dn7Z+5q4iywqpaP8pP3+oY57
   cgtQax1jle3xhRAj65cl1RBmQQKBgQDVbLqK6wKDfSdZuMZGUtOY0rtamBDCgEU6
   rEqBAyCPy5NpF1pomUFcYKWT/wbReFqtuyq2OyiATB0yHHMko46BUtN7qX/m/skt
   DHWXVWs1+G4IgEMVokM9jjrkgdY5grrJ68sagKC+bgv35BizHPIqgQuO6qnPSrM9
   bevwbQEj1QKBgQCiPE/zeBSnzyjeaTdLxGkR1R+ZX2WqdNdYqnQkiWMkflaSmt5J
   4raEj+GhLC5BZsZ6+z480M6XXFWOwSkbMv5WHl824KHvgKcfoh0OiR1EVyjN1gDx
   wKOQvjycMhs3FpXn0arjCczS2wGSgPGEpUR4JJhcpfaF6kphZsWDWzVlAQKBgQC2
   ivbKltNhj4w2q1m7EGC3F5bzl5jOI1QTKQXYbspM8zwz6KuFR3+l+Wvlt30ncJ9u
   dOXFU7gCdBeMotTBA7uBVUxZOtKQyl9bTorNU1wNn1zNnJbETDLi1WH9zCdkrTIC
   PtFK67WQ6yMFdWzC1gEy5YjzRjbTe/rukbP5weH1uQKBgQC+WfachEmQ3NcxSjbR
   kUxCcida8REewWh4AldU8U0gFcFxF6YwQI8I7ujtnCK2RKTECG9HCyaDXgMwfArV
   zf17a9xDJL2LQKrJ9ATeSo34o9zIkpbJL0NCHHocOqYdHU+VO2ZE4Gu8DKk3siVH
   XAaJ/RJSEqAIMOgwfGuHOhhto6A7MDkGCisGAQQBkggSCAExKzApBglghkgBZQME
   AgIEHJjImYZSlYkp6InjQZ87/Q7f4KyhXaMGDe34oeg=
   -----END PRIVATE KEY-----

   This secret key was generated using provable prime generation found
   in [FIPS186-4] using the seed
   98c8998652958929e889e3419f3bfd0edfe0aca15da3060dedf8a1e8.  This seed
   is the first 224 bits of the SHA-256 ([SHA]) digest of the string
   draft-lamps-sample-certs-keygen.bob.encrypt.seed.

5.5.  PKCS #12 Object for Bob

   This PKCS #12 ([RFC7292]) object contains the same information as
   presented in Sections 3.3, 5.1, 5.2, 5.3, and 5.4.

   It is locked with the simple three-letter password bob.

   -----BEGIN PKCS12-----
   MIIX6AIBAzCCF7AGCSqGSIb3DQEHAaCCF6EEghedMIIXmTCCBIcGCSqGSIb3DQEH
   BqCCBHgwggR0AgEAMIIEbQYJKoZIhvcNAQcBMBwGCiqGSIb3DQEMAQMwDgQIe/d6
   qDQ/28QCAhQGgIIEQJKA5kzRVm9d6rEwC/0RyBSgpPuSROUQTjspt6EhBZlgHc3u
   FTCPaO5P/vpeWaCnBRarGFn3DmqA3JT+59bmRpGdiP3Zrlk2EbHi0yrd2P3UFDnX
   qRkkI+7pf6eOHWJRntJA+KJS8v3tZ/hpiEKAEav/Mq0IFNFyEiZpCkbKCX5auDb1
   p5c3J2MNg/WNBfpGJUHKVIzuIF3H+8LfFgayRsDsppoUMffR+GmdL8nxLiqhraHD
   +Iqr3LpEroNi/iZQWUTFTUlaePf/2KMqaHOuy41IVvcH1jIcLXHGNa66S8AP/Hj2
   TJPPg/lve76DVaGdEnx4QJd4pBFQac90zmhxU1HZrvzubK9t4e5lr80wpd2djvZK
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   -----END PKCS12-----

6.  Example Ed25519 Certification Authority

   The example Ed25519 Certification Authority has the following
   information:

   Name:  Sample LAMPS Ed25519 Certification Authority

6.1.  Ed25519 Certification Authority Root Certificate

   This certificate is used to verify certificates issued by the example
   Ed25519 Certification Authority.

   -----BEGIN CERTIFICATE-----
   MIIBtzCCAWmgAwIBAgITH59R65FuWGNFHoyc0N3iWesrXzAFBgMrZXAwWTENMAsG
   A1UEChMESUVURjERMA8GA1UECxMITEFNUFMgV0cxNTAzBgNVBAMTLFNhbXBsZSBM
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   Jw0ouxcJyAyXEQ4=
   -----END CERTIFICATE-----

6.2.  Ed25519 Certification Authority Secret Key

   This secret key material is used by the example Ed25519 Certification
   Authority to issue new certificates.

   -----BEGIN PRIVATE KEY-----
   MC4CAQAwBQYDK2VwBCIEIAt889xRDvxNT8ak53T7tzKuSn6CQDe8fIdjrCiSFRcp
   -----END PRIVATE KEY-----

   This secret key is the SHA-256 ([SHA]) digest of the ASCII string
   draft-lamps-sample-certs-keygen.ca.25519.seed.

6.3.  Ed25519 Certification Authority Cross-Signed Certificate

   If an email client only trusts the RSA Certification Authority Root
   Certificate found in Section 3.1, they can use this intermediate CA
   certificate to verify any end-entity certificate issued by the
   example Ed25519 Certification Authority.

   -----BEGIN CERTIFICATE-----
   MIICvzCCAaegAwIBAgITR49T5oAgYhF5+eBYQ3ZBZIMuujANBgkqhkiG9w0BAQsF
   ADBVMQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQLEwhMQU1QUyBXRzExMC8GA1UEAxMo
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   4F5HD00hQZgP15Dlb1rg+vskN8MSk5nuD+6z1VsugioW0+k=
   -----END CERTIFICATE-----

7.  Carlos's Sample Certificates

   Carlos has the following information:

   Name:  Carlos Turing

   Email Address:  carlos@smime.example

7.1.  Carlos's Signature Verification End-Entity Certificate

   This certificate is used for verification of signatures made by
   Carlos.

   -----BEGIN CERTIFICATE-----
   MIICBzCCAbmgAwIBAgITP14fVCTRtAFDeA9zwYoXhR52ljAFBgMrZXAwWTENMAsG
   A1UEChMESUVURjERMA8GA1UECxMITEFNUFMgV0cxNTAzBgNVBAMTLFNhbXBsZSBM
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   wDAdBgNVHQ4EFgQUZIXjO5wdWs3mC7oafwi+xJzMhD8wHwYDVR0jBBgwFoAUa6KV
   fboUm+QtBNEHpNGC5C5rjLUwBQYDK2VwA0EAwVGQWbdy6FQIpTFsaWvG2/US2fnS
   6B+BzgCrkGQKWX1WgkTj4MEOqL+0cFXLr7ZQ2DQUo2iXyTAu58BR6btcCQ==
   -----END CERTIFICATE-----

7.2.  Carlos's Signing Private Key Material

   This private key material is used by Carlos to create signatures.

   -----BEGIN PRIVATE KEY-----
   MC4CAQAwBQYDK2VwBCIEILvvxL741LfX+Ep3Iyye3Cjr4JmONIVYhZPM4M9N1IHY
   -----END PRIVATE KEY-----

   This secret key is the SHA-256 ([SHA]) digest of the ASCII string
   draft-lamps-sample-certs-keygen.carlos.sign.25519.seed.

7.3.  Carlos's Encryption End-Entity Certificate

   This certificate is used to encrypt messages to Carlos.  It contains
   an SMIMECapabilities extension to indicate that Carlos's MUA expects
   Elliptic Curve Diffie-Hellman (ECDH) with the HMAC-based Key
   Derivation Function (HKDF) using SHA-256, and that it uses the
   AES-128 key wrap algorithm, as indicated in [RFC8418].

   -----BEGIN CERTIFICATE-----
   MIICNDCCAeagAwIBAgITfz0Bv+b1OMAT79aCh3arViNvhDAFBgMrZXAwWTENMAsG
   A1UEChMESUVURjERMA8GA1UECxMITEFNUFMgV0cxNTAzBgNVBAMTLFNhbXBsZSBM
   QU1QUyBFZDI1NTE5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MCAXDTIwMTIxNTIx
   MzU0NFoYDzIwNTIxMjE1MjEzNTQ0WjA6MQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQL
   EwhMQU1QUyBXRzEWMBQGA1UEAxMNQ2FybG9zIFR1cmluZzAqMAUGAytlbgMhAC5o
   MczTIMiddTUYTc/WymEqXw8hZm1QbIz2xX2gFDx0o4HdMIHaMCsGCSqGSIb3DQEJ
   DwQeMBwwGgYLKoZIhvcNAQkQAxMwCwYJYIZIAWUDBAEFMAwGA1UdEwEB/wQCMAAw
   FwYDVR0gBBAwDjAMBgpghkgBZQMCATABMB8GA1UdEQQYMBaBFGNhcmxvc0BzbWlt
   ZS5leGFtcGxlMBMGA1UdJQQMMAoGCCsGAQUFBwMEMA4GA1UdDwEB/wQEAwIDCDAd
   BgNVHQ4EFgQUgSmg+iOgSyCMDXgA3u3aFss0JbkwHwYDVR0jBBgwFoAUa6KVfboU
   m+QtBNEHpNGC5C5rjLUwBQYDK2VwA0EAzss75UzFuADPfd4hQdo5jyAQ3GvkyyvI
   BdBGnWtJ1eT1WuMaIMhi1rH4vPGPd9scwW+sqd9fG+pv3MShl+zKAQ==
   -----END CERTIFICATE-----

7.4.  Carlos's Decryption Private Key Material

   This private key material is used by Carlos to decrypt messages.

   -----BEGIN PRIVATE KEY-----
   MC4CAQAwBQYDK2VuBCIEIIH5782H/otrhLy9Dtvzt79ffsvpcVXgdUczTdUvSQsK
   -----END PRIVATE KEY-----

   This secret key is the SHA-256 ([SHA]) digest of the ASCII string
   draft-lamps-sample-certs-keygen.carlos.encrypt.25519.seed.

7.5.  PKCS #12 Object for Carlos

   This PKCS #12 ([RFC7292]) object contains the same information as
   presented in Sections 6.3, 7.1, 7.2, 7.3, and 7.4.

   It is locked with the simple five-letter password carlos.

   -----BEGIN PKCS12-----
   MIIKzgIBAzCCCpYGCSqGSIb3DQEHAaCCCocEggqDMIIKfzCCAvcGCSqGSIb3DQEH
   BqCCAugwggLkAgEAMIIC3QYJKoZIhvcNAQcBMBwGCiqGSIb3DQEMAQMwDgQIwS3R
   pT1mkyMCAhS7gIICsGKkBm0nci9VHfqxOTWy/lkKyQeF5bwsF/9gZrqUym1KtHZF
   a4rSJIPUctmzqVnhGmfW9m+LEi7Em9rRmUIQbDZt4kQDG5eDk7AdhyDnB3uZDG1W
   4cAeUVXJMzGfnwtzy5TzBZzEo5nnVX74Al+PDW9wdpbv2TIriL0m29fBT+7HVS9F
   Z/95XokSwbb6mmCYeGiPpNEaoeUeuU4zrh/k+JJqDuqNsU66I30wH0CFmk3aarBV
   3LkEeCjKFkngzMOZqiKZu8D2hEUjsGQ9ALsRn7P+hIWNFIgjvqgcCMTF8fLK1C/8
   vYGD+HOpnn23nLele4b/qpFYx5kJ0bOK1Zo1SpgUQ7Bu6gectUceyOgi7CjRScuV
   ew7918ZY0ugyYoIWAT0kecPM0TFtxAn19JPXo4jBYAlwUtx7GYAlDkgZCb/0dbkv
   4L+PAeJK4kVDREDQ6ch/6/hlqU8xHeNzdagEWYL6FxWDiHebASxIvZzqkLd7RV9m
   dL1FXst9R9G74jOs0WMMFmd9toyOhD0q6Gl9catOrolCVS/CKaC0CucsJfiKrlJ/
   duQkt/JwcELveuOg60u2uaGKUqHmFhd3+6omk+wNBoY+0D5MmBZ/xnrVELGmzp94
   q0f/HfZPT6sxkYBGuP2eUA/qr/zimNG3TuGVch/MdnduuVhvAYLyh1gbA8yRm+I/
   zGCVuAqhsHITTx7Fqc3tyVp/mLYUO0QuwmgAw6NhzwKZf5N+tR0DZGcgw8rZpeJA
   yTxVFcjzXvoShxog7RroR9Nc4FwJhWI4BO241OHFEiQZeRk8vzI8WIFXnn6t42/q
   j1mV7Ba42zxPEGoY3mObKwjR6rDp6KwmmfkghpwMPU3qP2/ASV8WT1+9GIYHc5Am
   9CmSOTiQMluW70Ra2k5ZMlwnbKNyMRbjUB/yHwwwggKvBgkqhkiG9w0BBwagggKg
   MIICnAIBADCCApUGCSqGSIb3DQEHATAcBgoqhkiG9w0BDAEDMA4ECOMzXMste/8a
   AgIUlICCAmgXa+q2JhTLvWsj5SKLdMninTk5uB6HhOsDKYR9GDg/cABqUFxycROG
   JeJuewIRkJhsfdXJi+TSRtnQOqpyVM9oRUdxcbGuCI98fEbLmVyr7KF8GudTgC+b
   eaLjn6HYkWpv7lWdvsFG8BEy6Jqi3/tP9PgNvpCYgVVM7yx6SX8QArcLSQkxbTsv
   Ae0iN18H89W9xOHEz4Z2qHYyb7f0pPHrmpTGC6qmtvo1gNRsKTF0wYeQ5Sy/9U3f
   oM6bIcrOvHDksaco4+5n0zeySDETY8W4mO1K0uC/t0oTOScYGBeRhVr0DQapZGT/
   Ej5LpgjXOuosAoT3IKnMwK3C0OZ8oBzcvgSpeAa/V/OTKDpZb22yq6sEaHAPoUqb
   cKRJmB6HC5mdLs3n0uP1vlZuYsHu7Evt0Uhns9pbklJDiCgM+4SFgKTRbd6Xt8bf
   GHkWnmpv4pQL7jjzA3epP2DHyC8MJaDvleWY7Z3t/IEtkzVxflLo8kT21edz12cm
   uFVK9ilMW3eJuyiRyFXFPgVsuNi/HFnijXFgxzAncP7fFP5MCsOo6daiEjJjemKf
   J3D+HdD60gFih/eX9V+tGl4y7/jtxCRA/54mit4sCy3LC0++lEp9AtFwGYrDw825
   uGj27a7mE26qgGdGXdzT9UJ8FfUsIoRPrG38Q4mhS10pTarNucWOGjkftZiKJLay
   rfMRf3HYxOI/7iupfxYLK/4/FODijaHzAfSdQf2Bo7csPaz2HQkK/0nyO+tt68S9
   pUCjEfV6Liy22tang/jXxPFbBDK/P68MnmgR8C3PcYhPJCo/K0JR2/8F8pVVEqd5
   MIIDPwYJKoZIhvcNAQcGoIIDMDCCAywCAQAwggMlBgkqhkiG9w0BBwEwHAYKKoZI
   hvcNAQwBAzAOBAho9g0tQyYTvwICFIGAggL43SpNCoshZX3ikmK1mOIJpS2Ah8Xv
   94S/5NA8kwHtaNXpLrjYr3CyRL93USm55uvGAtECR/EblON9zeo2p0gK2JPSbDr6
   /1oovo7UoZNRoRBZ8pUegVWJswNWjqvzVu5JIRmpD05XjVDKHbFqiXAqtj9/w3q0
   Qq/p/M9UrLWD93hyLNdIppWr2KR2it9mASTKEHX9dqXcTOG0Kp2GmrfGNteGL02j
   qVKZaZyYI8gkSxhVLS9zzgf1OynAkzYQsoo+GKhdAW1fJECemAyPc3L+eeARw/SY
   q1d5QVwxKfYpIJ2wiiavdeRVNbWiwV7Ti+P9PtPx/hV22NNLwMhvnJcHaSS1PaOi
   SjoxFJ1EJWGEs0QwcdwM8iN3oVuqT5HU/edMgx9TLNTiE1g2GEq59I/RwBtCL8Dh
   OzKnUb4PU1Z81+HimV3KPI8g3cduhYaBR4HfqAhMnc+w5HXI6J3C1NtAE/izZ1Y2
   Od7l+GTJfjPgzIy0hjqfbMt8uU9D9aPr2XjNOWoKRSojae16v8bLx+dFn6RMxFUS
   g3nLEZ6EDpyrJfpGPm6mPgZKSXtvnHuFcbS+utkRuVAtqu07r2XpkGBIJLNVIRHU
   5gLACbTj9TPcAce6RLoaYSDgOuFK0YZMdwzhsAI0YMpyHsUEZpQ5tjWSBY6ENbvF
   7+QhmDnf6N3Bj+vxUtGS40pVsYCGbmOD7UM5QpUxIgVkpPrfRokOZs/fi9sW+Xy6
   eQ2Brbn3t9C2TAsORYzFbuBwuTCqFW/rXHS6iffJpx2eAg3DCqaUAJjptSV/yzj4
   vxiXlDB3fMRcpNd5Je7DoHS4axuj7SLHdpNoUHs+qQsG6yDM5BEuXWGxo/L9sGhe
   XQrUnkZ4m4g01sfgTOfDNurXx/oP0ym+B50q6nLUWv0tYZpmCVil358dIEGPPSMY
   AMXh05tIPFdYSJ3WLs0cxy5X4sXZl5w16Pzeb9SF5topqRUb5PDTfVr2bQUMwTbp
   99FcOQf6cg8HXyT+8b4qKp9WyjCBxAYJKoZIhvcNAQcBoIG2BIGzMIGwMIGtBgsq
   hkiG9w0BDAoBAqBaMFgwHAYKKoZIhvcNAQwBAzAOBAgNhfODEdzSrQICFF0EOCEq
   Fie1peicS9OSXNQjLwbN3kO8lYM2HqeSZoEKJ4JSFlV1kWW3xwfu5aZKrGEYBfGM
   d8renRijMUIwGwYJKoZIhvcNAQkUMQ4eDABjAGEAcgBsAG8AczAjBgkqhkiG9w0B
   CRUxFgQUgSmg+iOgSyCMDXgA3u3aFss0JbkwgcQGCSqGSIb3DQEHAaCBtgSBszCB
   sDCBrQYLKoZIhvcNAQwKAQKgWjBYMBwGCiqGSIb3DQEMAQMwDgQINFcqIEMfd9UC
   AhS1BDgZruEsSaBY+Cm9WKR8HhH3JXh+AoMSrwkDCKytWt+MNIXB0jY2QZHDbN3u
   Fn7qHw06MDthnKniazFCMBsGCSqGSIb3DQEJFDEOHgwAYwBhAHIAbABvAHMwIwYJ
   KoZIhvcNAQkVMRYEFGSF4zucHVrN5gu6Gn8IvsSczIQ/MC8wHzAHBgUrDgMCGgQU
   8nOYIWrnJVXEur957K5cCV3jx5cECJDjaZkfy4FnAgIoAA==
   -----END PKCS12-----

8.  Dana's Sample Certificates

   Dana has the following information:

   Name:  Dana Hopper

   Email Address:  dna@smime.example

8.1.  Dana's Signature Verification End-Entity Certificate

   This certificate is used for verification of signatures made by Dana.

   -----BEGIN CERTIFICATE-----
   MIICAzCCAbWgAwIBAgITaWZI+hVtn8pQZviAmPmBXzWfnjAFBgMrZXAwWTENMAsG
   A1UEChMESUVURjERMA8GA1UECxMITEFNUFMgV0cxNTAzBgNVBAMTLFNhbXBsZSBM
   QU1QUyBFZDI1NTE5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MCAXDTIwMTIxNTIx
   MzU0NFoYDzIwNTIxMjE1MjEzNTQ0WjA4MQ0wCwYDVQQKEwRJRVRGMREwDwYDVQQL
   EwhMQU1QUyBXRzEUMBIGA1UEAxMLRGFuYSBIb3BwZXIwKjAFBgMrZXADIQCy2h3h
   hkaKDY67PuCuNLnnrQiHdSWYpPlgFsOif85vrqOBrjCBqzAMBgNVHRMBAf8EAjAA
   MBcGA1UdIAQQMA4wDAYKYIZIAWUDAgEwATAdBgNVHREEFjAUgRJkYW5hQHNtaW1l
   LmV4YW1wbGUwEwYDVR0lBAwwCgYIKwYBBQUHAwQwDgYDVR0PAQH/BAQDAgbAMB0G
   A1UdDgQWBBRIA4bBabh4ba7e88wGsDOsVzLdljAfBgNVHSMEGDAWgBRropV9uhSb
   5C0E0Qek0YLkLmuMtTAFBgMrZXADQQDpORBZitzXGYUjxnoKVLIcWL5xner97it5
   VKxEf8E7AeAp96POPEu//2jXnh4qAT40ymW0wrqxU1NT8WW/dSgC
   -----END CERTIFICATE-----

8.2.  Dana's Signing Private Key Material

   This private key material is used by Dana to create signatures.

   -----BEGIN PRIVATE KEY-----
   MC4CAQAwBQYDK2VwBCIEINZ8GPfmQh2AMp+uNIsZMbzvyTOltwvEt13usjnUaW4N
   -----END PRIVATE KEY-----

   This secret key is the SHA-256 ([SHA]) digest of the ASCII string
   draft-lamps-sample-certs-keygen.dana.sign.25519.seed.

8.3.  Dana's Encryption End-Entity Certificate

   This certificate is used to encrypt messages to Dana.  It contains an
   SMIMECapabilities extension to indicate that Dana's MUA expects ECDH
   with HKDF using SHA-256, and that it uses the AES-128 key wrap
   algorithm, as indicated in [RFC8418].

   -----BEGIN CERTIFICATE-----
   MIICMDCCAeKgAwIBAgITDksKNqnvupyaO2gkjlIdwN7zpzAFBgMrZXAwWTENMAsG
   A1UEChMESUVURjERMA8GA1UECxMITEFNUFMgV0cxNTAzBgNVBAMTLFNhbXBsZSBM
   QU1QUyBFZDI1NTE5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MCAXDTIwMTIxNTIx
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   HjAcMBoGCyqGSIb3DQEJEAMTMAsGCWCGSAFlAwQBBTAMBgNVHRMBAf8EAjAAMBcG
   A1UdIAQQMA4wDAYKYIZIAWUDAgEwATAdBgNVHREEFjAUgRJkYW5hQHNtaW1lLmV4
   YW1wbGUwEwYDVR0lBAwwCgYIKwYBBQUHAwQwDgYDVR0PAQH/BAQDAgMIMB0GA1Ud
   DgQWBBSd303UBe+a7GCGvCdtBOnOWtyPpDAfBgNVHSMEGDAWgBRropV9uhSb5C0E
   0Qek0YLkLmuMtTAFBgMrZXADQQD6f7DCCxXzpnY3BwmrIuf/SNQSf//Otri7USkd
   9GF+VthGS+9KJ4HTBCh0ZGuHIU9EgnfgdSL1UR3WUkL7tv8A
   -----END CERTIFICATE-----

8.4.  Dana's Decryption Private Key Material

   This private key material is used by Dana to decrypt messages.

   -----BEGIN PRIVATE KEY-----
   MC4CAQAwBQYDK2VuBCIEIGxZt8L7lY48OEq4gs/smQ4weDhRNMlYHG21StivPfz3
   -----END PRIVATE KEY-----

   This seed is the SHA-256 ([SHA]) digest of the ASCII string draft-
   lamps-sample-certs-keygen.dana.encrypt.25519.seed.

8.5.  PKCS #12 Object for Dana

   This PKCS #12 ([RFC7292]) object contains the same information as
   presented in Sections 6.3, 8.1, 8.2, 8.3, and 8.4.

   It is locked with the simple four-letter password dana.

   -----BEGIN PKCS12-----
   MIIKtgIBAzCCCn4GCSqGSIb3DQEHAaCCCm8EggprMIIKZzCCAu8GCSqGSIb3DQEH
   BqCCAuAwggLcAgEAMIIC1QYJKoZIhvcNAQcBMBwGCiqGSIb3DQEMAQMwDgQIZNqH
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   nfLcQFdf1R/5okysblRtaMujlhelymT7MoM8u5C8ceIO7uWX8NI5B/IB+Yn2BvzZ
   9LXoSia/wHjTu7UK610o7WOq9qTYe1i1x+HsmJaOC6hpaQh6b33VWDrHJbl7c/4Z
   tvQ9qAzqkqIhFWMRXNK+32jFVAgXrD8U1QHW2ip5s7W/Xtm1AegrhG1nSQgJezYl
   OnE/t2PDWuPeW94kR0uv1fNsh6plLyZYf/BaqhoGCHsa/ipD86viVSZDgJ8ASVLF
   eLUK3HYFMhJ+MLEzZJffYZAOnbYoyNPNc0vc7dpbk+ZMnlb5bDFcMCpm7+fWOjsC
   nsNNL9nqQlNHHCJRKGuxO5rujftbPM7R3GLT9d/u5e9YY5cX0RiDLxomFfflj2Yh
   uRoyX+8WzESt98I/KmAraWKXnxOP1FEWajtNCrnGCezDKO3xEHTQhECpg+z7O4mj
   MjN6MIHABgkqhkiG9w0BBwGggbIEga8wgawwgakGCyqGSIb3DQEMCgECoFowWDAc
   BgoqhkiG9w0BDAEDMA4ECL2Bz1vW+YZkAgIUugQ4YOyEjke53NDvCFR0ciUHZ7re
   f9/wPx5TgV3qzGhfR4bP2rdpiOt9hAHVK5cmUAR7+wjAJiYdLUQxPjAXBgkqhkiG
   9w0BCRQxCh4IAGQAYQBuAGEwIwYJKoZIhvcNAQkVMRYEFJ3fTdQF75rsYIa8J20E
   6c5a3I+kMIHABgkqhkiG9w0BBwGggbIEga8wgawwgakGCyqGSIb3DQEMCgECoFow
   WDAcBgoqhkiG9w0BDAEDMA4ECFw78Uk8K64uAgIU+gQ4id0jRb3JyEM5fdpaeQR+
   YEeMn+Y5KavplVD5HtgQQY9hhppbQqG4af7KY+MT6xus6oNEQeJAE5wxPjAXBgkq
   hkiG9w0BCRQxCh4IAGQAYQBuAGEwIwYJKoZIhvcNAQkVMRYEFEgDhsFpuHhtrt7z
   zAawM6xXMt2WMC8wHzAHBgUrDgMCGgQUzSoHpcIerV21CvCOjAe5ZVhs2M8ECC5D
   kkzl2MltAgIoAA==
   -----END PKCS12-----

9.  Security Considerations

   The keys presented in this document should be considered compromised
   and insecure, because the secret key material is published and
   therefore not secret.

   Any application that maintains a deny list of invalid key material
   should include these keys in its list.

10.  IANA Considerations

   This document has no IANA actions.

11.  References

11.1.  Normative References

   [RFC5280]  Cooper, D., Santesson, S., Farrell, S., Boeyen, S.,
              Housley, R., and W. Polk, "Internet X.509 Public Key
              Infrastructure Certificate and Certificate Revocation List
              (CRL) Profile", RFC 5280, DOI 10.17487/RFC5280, May 2008,
              <https://www.rfc-editor.org/info/rfc5280>.

   [RFC5958]  Turner, S., "Asymmetric Key Packages", RFC 5958,
              DOI 10.17487/RFC5958, August 2010,
              <https://www.rfc-editor.org/info/rfc5958>.

   [RFC7292]  Moriarty, K., Ed., Nystrom, M., Parkinson, S., Rusch, A.,
              and M. Scott, "PKCS #12: Personal Information Exchange
              Syntax v1.1", RFC 7292, DOI 10.17487/RFC7292, July 2014,
              <https://www.rfc-editor.org/info/rfc7292>.

   [RFC7468]  Josefsson, S. and S. Leonard, "Textual Encodings of PKIX,
              PKCS, and CMS Structures", RFC 7468, DOI 10.17487/RFC7468,
              April 2015, <https://www.rfc-editor.org/info/rfc7468>.

   [RFC8032]  Josefsson, S. and I. Liusvaara, "Edwards-Curve Digital
              Signature Algorithm (EdDSA)", RFC 8032,
              DOI 10.17487/RFC8032, January 2017,
              <https://www.rfc-editor.org/info/rfc8032>.

   [RFC8479]  Mavrogiannopoulos, N., "Storing Validation Parameters in
              PKCS#8", RFC 8479, DOI 10.17487/RFC8479, September 2018,
              <https://www.rfc-editor.org/info/rfc8479>.

   [RFC8551]  Schaad, J., Ramsdell, B., and S. Turner, "Secure/
              Multipurpose Internet Mail Extensions (S/MIME) Version 4.0
              Message Specification", RFC 8551, DOI 10.17487/RFC8551,
              April 2019, <https://www.rfc-editor.org/info/rfc8551>.

11.2.  Informative References

   [FIPS186-4]
              National Institute of Standards and Technology (NIST),
              "Digital Signature Standard (DSS)", FIPS PUB 186-4,
              DOI 10.6028/NIST.FIPS.186-4, July 2013,
              <https://doi.org/10.6028/NIST.FIPS.186-4>.

   [OPENPGP-SAMPLES]
              Einarsson, B. R., juga, and D. K. Gillmor, "OpenPGP
              Example Keys and Certificates", Work in Progress,
              Internet-Draft, draft-bre-openpgp-samples-01, 20 December
              2019, <https://datatracker.ietf.org/doc/html/draft-bre-
              openpgp-samples-01>.

   [RFC4134]  Hoffman, P., Ed., "Examples of S/MIME Messages", RFC 4134,
              DOI 10.17487/RFC4134, July 2005,
              <https://www.rfc-editor.org/info/rfc4134>.

   [RFC5322]  Resnick, P., Ed., "Internet Message Format", RFC 5322,
              DOI 10.17487/RFC5322, October 2008,
              <https://www.rfc-editor.org/info/rfc5322>.

   [RFC7469]  Evans, C., Palmer, C., and R. Sleevi, "Public Key Pinning
              Extension for HTTP", RFC 7469, DOI 10.17487/RFC7469, April
              2015, <https://www.rfc-editor.org/info/rfc7469>.

   [RFC8410]  Josefsson, S. and J. Schaad, "Algorithm Identifiers for
              Ed25519, Ed448, X25519, and X448 for Use in the Internet
              X.509 Public Key Infrastructure", RFC 8410,
              DOI 10.17487/RFC8410, August 2018,
              <https://www.rfc-editor.org/info/rfc8410>.

   [RFC8418]  Housley, R., "Use of the Elliptic Curve Diffie-Hellman Key
              Agreement Algorithm with X25519 and X448 in the
              Cryptographic Message Syntax (CMS)", RFC 8418,
              DOI 10.17487/RFC8418, August 2018,
              <https://www.rfc-editor.org/info/rfc8418>.

   [SHA]      National Institute of Standards and Technology (NIST),
              "Secure Hash Standard (SHS)", FIPS PUB 180-4,
              DOI 10.6028/NIST.FIPS.180-4, August 2015,
              <https://doi.org/10.6028/NIST.FIPS.180-4>.

   [TEST-POLICY]
              National Institute of Standards and Technology (NIST),
              "Test Certificate Policy to Support PKI Pilots and
              Testing", Computer Security Resource Center, May 2012,
              <https://csrc.nist.gov/CSRC/media/Projects/Computer-
              Security-Objects-Register/documents/test_policy.pdf>.

Acknowledgements

   This document was inspired by similar work in the OpenPGP space by
   Bjarni Rúnar Einarsson and juga; see [OPENPGP-SAMPLES].

   Eric Rescorla helped spot issues with certificate formats.

   Sean Turner pointed to [RFC4134] as prior work.

   Deb Cooley suggested that Alice and Bob should have separate
   certificates for signing and encryption.

   Wolfgang Hommel helped to build reproducible encrypted PKCS #12
   objects.

   Carsten Bormann got the XML sourcecode markup working for this
   document.

   David A. Cooper identified problems with the certificates and
   suggested corrections.

   Lijun Liao helped get the terminology right.

   Stewart Bryant and Roman Danyliw provided editorial suggestions.

Author's Address

   Daniel Kahn Gillmor (editor)
   American Civil Liberties Union
   125 Broad St.
   New York, NY 10004
   United States of America
   Email: dkg@fifthhorseman.net
