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pkcs11-tool -l --keypairgen --key-type EC:secp384r1 --label root
or
pkcs11-tool -l --keypairgen --key-type EC:secp256r1 --label root
pkcs11-tool -l --keypairgen --key-type rsa:4096 --label root

pki_dir=/opt/certificate-authority
mkdir $pki_dir
cd $pki_dir
mkdir certs config crl newcerts intermediate intermediate/certs intermediate/crl intermediate/csr intermediate/newcerts
touch index.txt intermediate/index.txt
cd config

# Arch Linux
pacman -S community/opensc community/libp11

# Ubuntu
sudo apt-get install opensc gnutls-bin

# Generate private key on HSM
$ pkcs11-tool -l --keypairgen --key-type EC:secp384r1 --label root
Using slot 0 with a present token (0x0)
Logging in to "SmartCard-HSM (UserPIN)".
Please enter User PIN:
Key pair generated:
Private Key Object; EC
  label:      root
  ID:         e0161cc8b6f5d66ac6835ecdecb623fc0506a675
  Usage:      sign, derive
  Access:     none
Public Key Object; EC  EC_POINT 384 bits
  EC_POINT:   046104c1e7b40e1ef9e5d47399aeeda695026c9eb626462059eb696e8f2b647b42d64ac3b7fc7a5b31aa3edf9bce46b2cdcf8e5d190b13601d3d14ffb119c8cf60033c6b78ba579b85113ca536eef1cf85ba418ff0110a56ec881b329e0562e090a3e7
  EC_PARAMS:  06052b81040022
  label:      root
  ID:         e0161cc8b6f5d66ac6835ecdecb623fc0506a675
  Usage:      verify, derive
  Access:     none


#to get the id
pkcs11-tool -O

vim create_root_cert.ini
[ ca ]
# `man ca`
default_ca = CA_default

[ CA_default ]
# Directory and file locations.
dir               = /opt/certificate-authority
certs             = $dir/certs
crl_dir           = $dir/crl
new_certs_dir     = $dir/newcerts
database          = $dir/index.txt
serial            = $dir/serial

# SHA-1 is deprecated, so use SHA-2 instead.
default_md        = sha512

name_opt          = ca_default
cert_opt          = ca_default
default_days      = 375
preserve          = no
policy            = policy_strict

[ policy_strict ]
# The root CA should only sign intermediate certificates that match.
# See the POLICY FORMAT section of `man ca`.
countryName             = match
stateOrProvinceName     = match
organizationName        = match
organizationalUnitName  = optional
commonName              = supplied
emailAddress            = optional

[ req ]
# Options for the `req` tool (`man req`).
default_bits        = 4096
distinguished_name  = req_distinguished_name
string_mask         = utf8only
prompt              = no

# SHA-1 is deprecated, so use SHA-2 instead.
default_md          = sha512

[ req_distinguished_name ]
C                   = <two lettter country>
ST                  = <full state name>
O                   = <your company>
OU                  = <your company> Certificate Authority
CN                  = <your company> Root CA

[ v3_ca ]
# Extensions for a typical CA (`man x509v3_config`).
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer
basicConstraints = critical, CA:true
keyUsage = critical, digitalSignature, cRLSign, keyCertSign


#Generate the self-signed public certificate from the private key. Use the private key id value from earlier.
$ openssl req -config create_root_cert.ini -engine pkcs11 -keyform engine -key e0161cc8b6f5d66ac6835ecdecb623fc0506a675 -new -x509 -days 3650 -sha512 -extensions v3_ca -out ../certs/root.crt
engine "pkcs11" set.
Enter PKCS#11 token PIN for SmartCard-HSM (UserPIN):

#verify stuff matches
$ openssl x509 -noout -text -in ../certs/root.crt
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            25:ac:e1:36:75:67:26:1d:bb:96:4b:84:c2:2d:83:25:7b:cc:e0:e5
        Signature Algorithm: ecdsa-with-SHA512
        Issuer: C = US, ST = My State, O = My Company, OU = My Company Certificate Authority, CN = My Company Root CA
        Validity
            Not Before: Aug 18 20:13:20 2020 GMT
            Not After : Aug 16 20:13:20 2030 GMT
        Subject: C = US, ST = My State, O = My Company, OU = My Company Certificate Authority, CN = My Company Root CA
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (384 bit)
                pub:
                    04:c1:e7:b4:0e:1e:f9:e5:d4:73:99:ae:ed:a6:95:
                    02:6c:9e:b6:26:46:20:59:eb:69:6e:8f:2b:64:7b:
                    42:d6:4a:c3:b7:fc:7a:5b:31:aa:3e:df:9b:ce:46:
                    b2:cd:cf:8e:5d:19:0b:13:60:1d:3d:14:ff:b1:19:
                    c8:cf:60:03:3c:6b:78:ba:57:9b:85:11:3c:a5:36:
                    ee:f1:cf:85:ba:41:8f:f0:11:0a:56:ec:88:1b:32:
                    9e:05:62:e0:90:a3:e7
                ASN1 OID: secp384r1
                NIST CURVE: P-384
        X509v3 extensions:
            X509v3 Subject Key Identifier:
                F1:FA:61:75:0B:AC:3C:95:97:EF:73:3C:3F:38:22:B1:DB:D9:BF:41
            X509v3 Authority Key Identifier:
                keyid:F1:FA:61:75:0B:AC:3C:95:97:EF:73:3C:3F:38:22:B1:DB:D9:BF:41

            X509v3 Basic Constraints: critical
                CA:TRUE
            X509v3 Key Usage: critical
                Digital Signature, Certificate Sign, CRL Sign
    Signature Algorithm: ecdsa-with-SHA512
         30:64:02:30:53:b8:b6:5a:41:4b:4f:6a:d1:a6:76:88:df:13:
         d6:da:c7:48:aa:8b:aa:ff:13:6c:d1:00:53:90:92:b5:71:57:
         eb:d0:bf:3e:5d:2e:62:c0:3e:40:0f:64:25:a5:92:0f:02:30:
         15:0a:19:d5:a2:09:86:d8:9d:07:67:71:c3:84:f2:6b:90:20:
         2d:29:10:9e:4c:73:7a:55:56:4b:dc:fe:8d:3f:f0:9c:20:e1:
         5a:74:fb:41:86:ad:a4:66:61:74:d7:fd




intermediate authority

# Generate private key on HSM
$ pkcs11-tool -l --keypairgen --key-type EC:secp384r1 --label intermediate
Using slot 0 with a present token (0x0)
Logging in to "SmartCard-HSM (UserPIN)".
Please enter User PIN:
Key pair generated:
Private Key Object; EC
  label:      intermediate
  ID:         bcb48fe9b566ae61891aabbfde6a23d4ff3ab639
  Usage:      sign, derive
  Access:     none
Public Key Object; EC  EC_POINT 384 bits
  EC_POINT:   046104d0fb5c0cd10c0b6e4d0f6986755824b624ec9fcd8ff9ae5f0109fe6ff3ad887ca760717da894f3ff84dc8c24fe8c93b0cd840a6aa941bb2866c061cef60e47b893d71852b50d6762af10c951426e55ec8925a6cd83aeae1730311108afdbcdee
  EC_PARAMS:  06052b81040022
  label:      intermediate
  ID:         bcb48fe9b566ae61891aabbfde6a23d4ff3ab639
  Usage:      verify, derive
  Access:     none

pkcs11-tool -O

vim create_intermediate_csr.ini

[ req ]
# Options for the `req` tool (`man req`).
default_bits        = 4096
distinguished_name  = req_distinguished_name
string_mask         = utf8only
prompt              = no

# SHA-1 is deprecated, so use SHA-2 instead.
[ v3_ca ]
# Extensions for a typical CA (`man x509v3_config`).
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer
basicConstraints = critical, CA:true
keyUsage = critical, digitalSignature, cRLSign, keyCertSign
default_md          = sha512

[ req_distinguished_name ]
C                   = <two lettter country>
ST                  = <full state name>
O                   = <your company>
OU                  = <your company> Certificate Authority
CN                  = <your company> Intermediate CA

#generate csr
$ openssl req -config create_intermediate_csr.ini -engine pkcs11 -keyform engine -key bcb48fe9b566ae61891aabbfde6a23d4ff3ab639 -new -sha512 -out ../intermediate/csr/intermediate.csr
engine "pkcs11" set.
Enter PKCS#11 token PIN for SmartCard-HSM (UserPIN):


$ openssl req -text -noout -verify -in ../intermediate/csr/intermediate.csr
verify OK
Certificate Request:
    Data:
        Version: 1 (0x0)
        Subject: C = US, ST = My State, O = My Company, OU = My Company Certificate Authority, CN = My Company Intermediate CA
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (384 bit)
                pub:
                    04:d0:fb:5c:0c:d1:0c:0b:6e:4d:0f:69:86:75:58:
                    24:b6:24:ec:9f:cd:8f:f9:ae:5f:01:09:fe:6f:f3:
                    ad:88:7c:a7:60:71:7d:a8:94:f3:ff:84:dc:8c:24:
                    fe:8c:93:b0:cd:84:0a:6a:a9:41:bb:28:66:c0:61:
                    ce:f6:0e:47:b8:93:d7:18:52:b5:0d:67:62:af:10:
                    c9:51:42:6e:55:ec:89:25:a6:cd:83:ae:ae:17:30:
                    31:11:08:af:db:cd:ee
                ASN1 OID: secp384r1
                NIST CURVE: P-384
        Attributes:
            a0:00
    Signature Algorithm: ecdsa-with-SHA512
         30:64:02:30:6a:1d:75:8b:59:99:2c:a8:5d:a0:7f:02:7d:9a:
         aa:40:74:7a:65:20:03:6b:bc:65:fb:7d:d1:7f:5b:24:ae:6f:
         40:16:ac:82:0b:80:9b:81:f9:d9:64:ea:0f:41:4c:d7:02:30:
         4d:28:7f:e3:76:52:c7:10:e1:bd:b7:2e:ea:65:78:41:0c:96:
         50:5f:e9:1f:be:18:ac:14:ba:65:3f:b0:2a:f4:0f:d0:56:ab:
         d0:8c:bf:d0:92:9e:f6:e5:f6:8a:af:a5


find the fully qualified PKCS#11 URI for your private key, this is an example
pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00;id=%E0%16%1C%C8%B6%F5%D6%6A%C6%83%5E%CD%EC%B6%23%FC%05%06%A6%75;object=root;type=private

$ p11tool --list-all
warning: no token URL was provided for this operation; the available tokens are:

pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00

$ p11tool --login --list-all pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00
Token 'SmartCard-HSM (UserPIN)' with URL 'pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00' requires user PIN
Enter PIN:
Object 0:
        URL: pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00;id=%E0%16%1C%C8%B6%F5%D6%6A%C6%83%5E%CD%EC%B6%23%FC%05%06%A6%75;object=root;type=private
        Type: Private key (EC/ECDSA-SECP384R1)
        Label: root
        Flags: CKA_PRIVATE; CKA_NEVER_EXTRACTABLE; CKA_SENSITIVE;
        ID: e0:16:1c:c8:b6:f5:d6:6a:c6:83:5e:cd:ec:b6:23:fc:05:06:a6:75

Object 1:
        URL: pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00;id=%E0%16%1C%C8%B6%F5%D6%6A%C6%83%5E%CD%EC%B6%23%FC%05%06%A6%75;object=root;type=public
        Type: Public key (EC/ECDSA-SECP384R1)
        Label: root
        ID: e0:16:1c:c8:b6:f5:d6:6a:c6:83:5e:cd:ec:b6:23:fc:05:06:a6:75

Object 2:
        URL: pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00;id=%BC%B4%8F%E9%B5%66%AE%61%89%1A%AB%BF%DE%6A%23%D4%FF%3A%B6%39;object=intermediate;type=private
        Type: Private key (EC/ECDSA-SECP384R1)
        Label: intermediate
        Flags: CKA_PRIVATE; CKA_NEVER_EXTRACTABLE; CKA_SENSITIVE;
        ID: bc:b4:8f:e9:b5:66:ae:61:89:1a:ab:bf:de:6a:23:d4:ff:3a:b6:39

Object 3:
        URL: pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00;id=%BC%B4%8F%E9%B5%66%AE%61%89%1A%AB%BF%DE%6A%23%D4%FF%3A%B6%39;object=intermediate;type=public
        Type: Public key (EC/ECDSA-SECP384R1)
        Label: intermediate
        ID: bc:b4:8f:e9:b5:66:ae:61:89:1a:ab:bf:de:6a:23:d4:ff:3a:b6:39


vim sign_intermediate_csr.ini

[ ca ]
# `man ca`
default_ca = CA_default

[ CA_default ]
# Directory and file locations.
dir               = /opt/certificate-authority
certs             = $dir/certs
crl_dir           = $dir/crl
new_certs_dir     = $dir/newcerts
database          = $dir/index.txt
serial            = $dir/serial

# The root key and root certificate.
private_key       = pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00;id=%E0%16%1C%C8%B6%F5%D6%6A%C6%83%5E%CD%EC%B6%23%FC%05%06%A6%75;object=root;type=private
certificate       = ../certs/root.crt

# SHA-1 is deprecated, so use SHA-2 instead.
default_md        = sha512

name_opt          = ca_default
cert_opt          = ca_default
default_days      = 375
preserve          = no
policy            = policy_loose

[ policy_loose ]
# Allow the intermediate CA to sign a more diverse range of certificates.
# See the POLICY FORMAT section of the `ca` man page.
countryName             = optional
stateOrProvinceName     = optional
localityName            = optional
organizationName        = optional
organizationalUnitName  = optional
commonName              = supplied
emailAddress            = optional

[ v3_intermediate_ca ]
# Extensions for a typical intermediate CA (`man x509v3_config`).
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer
basicConstraints = critical, CA:true, pathlen:0
keyUsage = critical, digitalSignature, cRLSign, keyCertSign


sign intermediate with root
$ openssl ca -config sign_intermediate_csr.ini -engine pkcs11 -keyform engine -extensions v3_intermediate_ca -days 1825 -notext -md sha512 -create_serial -in ../intermediate/csr/intermediate.csr -out ../intermediate/certs/intermediate.crt
engine "pkcs11" set.
Using configuration from sign_intermediate_csr.ini
Enter PKCS#11 token PIN for SmartCard-HSM (UserPIN):
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number:
            35:47:4d:05:12:cc:e1:a8:b6:bf:dd:3e:c8:29:7b:18:c0:a1:5c:68
        Validity
            Not Before: Aug 18 20:44:17 2020 GMT
            Not After : Aug 17 20:44:17 2025 GMT
        Subject:
            countryName               = US
            stateOrProvinceName       = My State
            organizationName          = My Company
            organizationalUnitName    = My Company Certificate Authority
            commonName                = My Company Intermediate CA
        X509v3 extensions:
            X509v3 Subject Key Identifier:
                1D:4F:E5:ED:11:42:9A:AC:25:E4:51:A3:42:67:97:39:A0:10:AE:82
            X509v3 Authority Key Identifier:
                keyid:F1:FA:61:75:0B:AC:3C:95:97:EF:73:3C:3F:38:22:B1:DB:D9:BF:41

            X509v3 Basic Constraints: critical
                CA:TRUE, pathlen:0
            X509v3 Key Usage: critical
                Digital Signature, Certificate Sign, CRL Sign
Certificate is to be certified until Aug 17 20:44:17 2025 GMT (1825 days)
Sign the certificate? [y/n]:y


1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated

# to verify
$ openssl x509 -noout -text -in ../intermediate/certs/intermediate.crt
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            35:47:4d:05:12:cc:e1:a8:b6:bf:dd:3e:c8:29:7b:18:c0:a1:5c:68
        Signature Algorithm: ecdsa-with-SHA512
        Issuer: C = US, ST = My State, O = My Company, OU = My Company Certificate Authority, CN = My Company Root CA
        Validity
            Not Before: Aug 18 20:44:17 2020 GMT
            Not After : Aug 17 20:44:17 2025 GMT
        Subject: C = US, ST = My State, O = My Company, OU = My Company Certificate Authority, CN = My Company Intermediate CA
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (384 bit)
                pub:
                    04:d0:fb:5c:0c:d1:0c:0b:6e:4d:0f:69:86:75:58:
                    24:b6:24:ec:9f:cd:8f:f9:ae:5f:01:09:fe:6f:f3:
                    ad:88:7c:a7:60:71:7d:a8:94:f3:ff:84:dc:8c:24:
                    fe:8c:93:b0:cd:84:0a:6a:a9:41:bb:28:66:c0:61:
                    ce:f6:0e:47:b8:93:d7:18:52:b5:0d:67:62:af:10:
                    c9:51:42:6e:55:ec:89:25:a6:cd:83:ae:ae:17:30:
                    31:11:08:af:db:cd:ee
                ASN1 OID: secp384r1
                NIST CURVE: P-384
        X509v3 extensions:
            X509v3 Subject Key Identifier:
                1D:4F:E5:ED:11:42:9A:AC:25:E4:51:A3:42:67:97:39:A0:10:AE:82
            X509v3 Authority Key Identifier:
                keyid:F1:FA:61:75:0B:AC:3C:95:97:EF:73:3C:3F:38:22:B1:DB:D9:BF:41

            X509v3 Basic Constraints: critical
                CA:TRUE, pathlen:0
            X509v3 Key Usage: critical
                Digital Signature, Certificate Sign, CRL Sign
    Signature Algorithm: ecdsa-with-SHA512
         30:66:02:31:00:9a:6e:08:d2:d6:3a:29:f6:ba:0c:4c:3a:f4:
         af:40:5e:e0:71:f2:bc:e4:47:f5:b4:ee:10:d7:27:b1:25:0b:
         4b:09:78:a1:b8:f2:b8:71:c5:4e:41:33:8e:64:db:ec:eb:02:
         31:00:fc:39:26:c2:ad:7b:3c:ab:75:06:34:02:47:79:40:31:
         1d:eb:17:ad:32:10:67:97:37:6f:7f:3c:ce:3e:12:3c:e9:7c:
         fa:43:3e:34:5d:5e:f4:f3:2f:fd:6a:2f:14:da


$ openssl verify -CAfile ../certs/root.crt ../intermediate/certs/intermediate.crt
../intermediate/certs/intermediate.crt: OK

#certificate chain
cat ../intermediate/certs/intermediate.crt ../certs/root.crt > ../intermediate/certs/chain.crt

####################setup ca done, to use the private key of the intermediate certificate to sign the CSRs of your servers 

vim sign_server_csrs.ini

[ ca ]
# `man ca`
default_ca = CA_default

[ CA_default ]
# Directory and file locations.
dir               = /opt/certificate-authority/intermediate
certs             = $dir/certs
crl_dir           = $dir/crl
new_certs_dir     = $dir/newcerts
database          = $dir/index.txt
serial            = $dir/serial

# The root key and root certificate.
private_key       = pkcs11:model=PKCS%2315%20emulated;manufacturer=www.CardContact.de;serial=DENK0104068;token=SmartCard-HSM%20%28UserPIN%29%00%00%00%00%00%00%00%00%00;id=%BC%B4%8F%E9%B5%66%AE%61%89%1A%AB%BF%DE%6A%23%D4%FF%3A%B6%39;object=intermediate;type=private
certificate       = $dir/certs/intermediate.crt

# SHA-1 is deprecated, so use SHA-2 instead.
default_md        = sha512

name_opt          = ca_default
cert_opt          = ca_default
default_days      = 375
preserve          = no
policy            = policy_loose

[ policy_loose ]
# Allow the intermediate CA to sign a more diverse range of certificates.
# See the POLICY FORMAT section of the `ca` man page.
countryName             = optional
stateOrProvinceName     = optional
localityName            = optional
organizationName        = optional
organizationalUnitName  = optional
commonName              = supplied
emailAddress            = optional

[ server_cert ]
# Extensions for server certificates (`man x509v3_config`).
basicConstraints = CA:FALSE
nsCertType = server
nsComment = "OpenSSL Generated Server Certificate"
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid,issuer:always
keyUsage = critical, digitalSignature, keyEncipherment
extendedKeyUsage = serverAuth


$ openssl ca -config sign_server_csrs.ini -engine pkcs11 -keyform engine -extensions server_cert -days 375 -notext -md sha512 -create_serial -in server_cert.csr -out server_cert.crt
engine "pkcs11" set.
Using configuration from sign_server_csrs.ini
Enter PKCS#11 token PIN for SmartCard-HSM (UserPIN):
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number:
            40:7f:dc:90:b0:3a:1b:fb:d3:e2:74:8d:40:28:a8:12:f7:7e:c3:74
        Validity
            Not Before: Aug 18 21:32:42 2020 GMT
            Not After : Aug 28 21:32:42 2021 GMT
        Subject:
            countryName               = US
            stateOrProvinceName       = My State
            organizationName          = My Company
            organizationalUnitName    = media
            commonName                = media
        X509v3 extensions:
            X509v3 Basic Constraints:
                CA:FALSE
            Netscape Cert Type:
                SSL Server
            Netscape Comment:
                OpenSSL Generated Server Certificate
            X509v3 Subject Key Identifier:
                26:89:19:95:6C:93:8C:DD:6E:AA:61:D5:C0:E6:78:CC:F1:47:64:FC
            X509v3 Authority Key Identifier:
                keyid:1D:4F:E5:ED:11:42:9A:AC:25:E4:51:A3:42:67:97:39:A0:10:AE:82
                DirName:/C=US/ST=My State/O=My Company/OU=My Company Certificate Authority/CN=My Company Root CA
                serial:35:47:4D:05:12:CC:E1:A8:B6:BF:DD:3E:C8:29:7B:18:C0:A1:5C:68

            X509v3 Key Usage: critical
                Digital Signature, Key Encipherment
            X509v3 Extended Key Usage:
                TLS Web Server Authentication
Certificate is to be certified until Aug 28 21:32:42 2021 GMT (375 days)
Sign the certificate? [y/n]:y


1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated


https://docs.nitrokey.com/nitrokeys/features/openpgp-card/certificate-authority
there is older document that may not be the same but it looks the same