Create virtual token

• Compile and install into /usr/local SoftHSM version 2 ( github.com/opendnssec/SoftHSMv2), or apt install softhsm2
• Compile and install into /usr/local OpenSSL version 3 and our PKCS#11 Engine from github.com/opensignature/pkcs11engine
• Create soft token with:
  
  mkdir -p $HOME/lib/softhsm/tokens
  echo "directories.tokendir = $HOME/lib/softhsm/tokens" > $HOME/lib/softhsm/softhsm2.conf
  export SOFTHSM2_CONF=$HOME/lib/softhsm/softhsm2.conf
  softhsm2-util --init-token --free --label mytoken1 --pin mysecret1 --so-pin mysopin1
  Result:
  
  The token has been initialized and is reassigned to slot 1119524181
• Create a key pair with pkcs11-tool (tool provided by OpenSC project):
  
  pkcs11-tool --module /usr/lib/softhsm/libsofthsm2.so -l -k --key-type rsa:2048 --id 4142 --label mykey1 --pin mysecret1
  Result:
  Key pair generated:
  Private Key Object; RSA
    label: mykey1
    ID:    4142
    Usage: decrypt, sign, unwrap
  Public Key Object; RSA 2048 bits
    label: mykey1
    ID:    4142
    Usage: encrypt, verify, wrap
• Create certificate ¹:
  
  openssl req -new -x509 -subj "/CN=MyCertTEST" -engine pkcs11 -keyform engine -key "pkcs11:object=mykey1;pin-value=mysecret1" -outform der -out mycert.der
• Insert certificate into token:
  
  pkcs11-tool --module /usr/lib/softhsm/libsofthsm2.so -l --id 4142 --label mycert1 -y cert -w mycert.der --pin mysecret1
  Result:
  Created certificate:
  Certificate Object, type = X.509 cert
    label: mycert1
    ID:    4142
  

OpenSSL storeutl command test

• Lists readable objects
  openssl storeutl -engine pkcs11 'pkcs11:'
  Result:
  0: Name: mykey1
  Public Key ID: AB hex: 4142
  1: Name: mycert1
  Certificate ID: AB hex: 4142
  
• Lists readable objects and private keys
  openssl storeutl -engine pkcs11 'pkcs11:pin-value=mysecret1'
  Result:
  0: Name: mykey1
  Public Key ID: AB hex: 4142
  1: Name: mycert1
  Certificate ID: AB hex: 4142
  2: Name: mykey1
  Private Key ID: AB hex: 4142
• Get X509 certificate
  openssl storeutl -engine pkcs11 'pkcs11:type=cert;object=mycert1'
  Result:
  0: Certificate
  -----BEGIN CERTIFICATE-----
  MIICsTCCAZkCFAk4voabdc+LathwHN3VF5UuAxVcMA0GCSqGSIb3DQEBCwUAMBUx
  EzARBgNVBAMMCk15Q2VydFRFU1QwHhcNMTkwNDE4MTEyNDU5WhcNMTkwNTE4MTEy
  NDU5WjAVMRMwEQYDVQQDDApNeUNlcnRURVNUMIIBIjANBgkqhkiG9w0BAQEFAAOC
  AQ8AMIIBCgKCAQEAy4dTcqXh2xPjw9FLYphugLMU5BtKAhbVZolAIatB9F48lvNI
  PTevhCTAPq1KHOyfGXQ70v2dnXgXrFa6QKiPJvv7471ZBcaWJ26mVMi0ILybuwwg
  V1Znngt8afE9AGXJPYwt+ELxoRHsDeuv7PHN6qhy/LHr8+U0nt6GBO69jnBOcZnj
  bOcAo5Xw9odHgeb64bG3aK2/52sZNCXwyyO+/XmI6WCjEUw0PdwltCqkCfGs0Wfp
  k2q8qLRDHzVTUMSFwa0XlVJNMJEgRsB18zIXTorUqZtya+pXDH7RIhh1mjcEdhki
  XksmSbsNIZIKzgptbZmYTLifoQsAIWsFevrk2QIDAQABMA0GCSqGSIb3DQEBCwUA
  A4IBAQBhbqzHcFz9PbnQOMc+f59cOGLwx/uT90A1HuwqQBw2fXkvFbf/IPqd2t0p
  eZEcx3qXMVEzHdiyJmS1uXuK3pdJllWdSFt/cGPI7MGQA52TcqzbIHuyCYusMTNJ
  q6n8z0BRmRp3LwdB7idtgqjJwFkwARJB2fEgc8OgsGHe4CEDIXupPVTcXHYynf3j
  sLA06IHOyI05d+R4/0AJ35wSXqltVsDq39rzXYZZhnuiAVi9YKd3hfaK/IASUENb
  z6dQSfWg3v0gQmlPgMpeQzAm6aNvbs9Z92EuckGgjmk+LE5cfF7Din98bgRrbO2K
  E1+WsICcs8FgqnS7J9lkyF4cZvls
  -----END CERTIFICATE-----
  Total found: 1

OpenSSL dgst command test

• Digest string "hello"
  echo "hello" | openssl dgst -sha256 -engine pkcs11 -keyform engine -sign "pkcs11:object=mykey1;pin-value=mysecret1" -out out.sig
• Verify digest
  echo "hello" | openssl dgst -sha256 -engine pkcs11 -keyform engine -verify "pkcs11:type=public;object=mykey1;pin-value=mysecret1" -signature out.sig
  Result:
  
  Verified OK

OpenSSL pkeyutl command test

• Encrypt string "hello"
  echo "hello" | openssl pkeyutl -sha256 -engine pkcs11 -keyform engine -pubin -encrypt -inkey "pkcs11:type=public;object=mykey1;pin-value=mysecret1" -pkeyopt rsa_padding_mode:pkcs1 -out textencoded.bin
• Decrypt
  openssl pkeyutl -sha256 -engine pkcs11 -keyform engine -decrypt -inkey "pkcs11:type=private;object=mykey1;pin-value=mysecret1" -pkeyopt rsa_padding_mode:pkcs1 -in textencoded.bin
  Result:
  
  hello

OpenSSL s_client command test

• Establish a secure connection with a server that requires clients to present a valid certificate to connect
  echo -en "GET /auth/index.php HTTP/1.1\r\nHost: www.saela.eu\r\n\r\n" | openssl s_client -quiet -connect www.saela.eu:443 -ssl_client_engine pkcs11
  Result:
  
  [SSL_CLIENT_I_DN]=CN=TEST [SSL_CLIENT_FINGERPRINT]=4db3a7b407f4298719db1c2d0b2615fb2e33f11b