Pkcs11 Generate New Key Pair
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Proof-of-concept of using an HSM to generate and store key pairs, then using those key pairs to create a CA certificate, client certificate and server certificate for TLS.

Reasons for importing keys include wanting to make a backup of a private key (generated keys are non-exportable, for security reasons), or if the private key is provided by an external source. This document will guide you through using the OpenSSL command line tool to generate a key pair which you can then import into a YubiKey. Keypairgen, -k Generate a new key pair (public and private pair.) -label name, -a name Specify the name of the object to operate on (or the token label when -init-token is used).list-mechanisms, -M Display a list of mechanisms supported by the token.list-objects, -O Display a list of objects. Creating a new key pair. The PKCS#15 tools we used to generate a key pair are able to store a certificate. $ openssl req -engine pkcs11 -new -key 'pkcs11:object=RSA2k48' -keyform engine -out myCert.pem -days 3650 -outform pem -x509 -utf8 engine 'pkcs11' set. Enter PKCS#11 token PIN for UserPIN (GIDS card): You are about to be asked to.

  • Linux
  • The openssl library
  • softhsm, or any other PKCS#11 library.

  1. Build the project

  2. If using softhsm, clean all existing softhsm slots.

    where ~/softhsm is the value of directories.tokendir in /etc/softhsm2.conf

  3. Set env vars for the PKCS#11 library path, and for the PKCS#11 Spy path if you want to use it.

    Oct 29, 2012  You need to use a command called ssh-keygen. This command generates, manages and converts authentication keys for ssh. It can create RSA keys for use by SSH protocol version 1 and RSA or DSA keys for use by SSH protocol version 2. He type of key to be generated is specified with the -t option. If invoked without any arguments, ssh-keygen will generate an RSA key for use in SSH. Ssh keygen generating host key west. How To: Generate SSH Host keys SSH is a service which most of system administrators use for remote administration of servers. When you install a fresh system, then at the start of the ssh service, it generates the host keys for your system which later on used for authentication. A host key is a cryptographic key used for authenticating computers in the SSH protocol. Host keys are key pairs, typically using the RSA, DSA, or ECDSA algorithms. Public host keys are stored on and/or distributed to SSH clients, and private keys are stored on SSH servers.

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  4. Initialize three slots.

    If you already have an initialized slot in your HSM, set:

    • TOKEN to the token label of the slot
    • USER_PIN to the user PIN of the slot
    • LABEL_{1,2,3} to the values of the object labels that will be used for the three generated key pairs.

    Otherwise, initialize them here:

    • For softhsm, use softhsm2-util or pkcs11-tool. Eg:

    • For TPM 2.0 TPMs, use tpm2_ptool or any other tool that uses TSS. Eg:

  5. Generate a key pair in each of the two slots.

    Possible values for --type are listed in the output of cargo run -- generate-key-pair --help

    Each invocation of generate-key-pair will print the public key parameters of the newly generated key - modulus and exponent for RSA, curve name and point for EC.

  6. Verify the key pairs.

    This should print the same key parameters that generate-key-pair invocations in the previous step did.

  7. Generate certificates using the key pairs

    This uses the first key pair to generate a CA cert (self-signed), the second key pair to generate a server cert (signed by the CA cert), and the third key pair to generate a client cert (also signed by the CA cert).

  8. Start a webserver using the server cert.

    The web server runs on port 8443 by default. Use --port to use a different value.

  9. Verify the cert served by the web server.

    This should show the cert chain and have no errors (apart from a verification error because the CA cert is untrusted).

    This should successfully show curl completing a TLS handshake and receiving Hello, world! from the web server.

  10. Use a webclient using the client cert for TLS client auth to connect to the webserver.

    This should successfully show the client completing a TLS handshake and receiving Hello, world! from the web server. The client will print the cert chain it received from the server. The server will also print the client cert chain it received from the client.

TPM 2.0 hardware currently does not have a fully-functional PKCS#11 implementation. There is tpm2-pkcs11 but it is not yet feature-complete, and does not work on all hardware.

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Here are some notes of how to use this demo with a TPM:

  • Your hardware may not work with the latest version of tpm2-pkcs11, so you may need a specific older version. You may also need specific older versions of tpm2-abrmd,tpm2-tss and tpm2-tools. Consult your hardware manufacturer.

  • Make sure to initialize the tpm2-pkcs11 store first:

    If using a custom store path (--path <>), make sure the path is writable by your user.

  • tpm2-pkcs11 only supports RSA 2048-bit keys and ECDSA P-256 keys.

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