Provided by: yubico-piv-tool_2.0.0-2_amd64 
NAME
yubico-piv-tool - Yubico PIV tool
SYNOPSIS
yubico-piv-tool [OPTIONS]...
DESCRIPTION
yubico-piv-tool 2.0.0
-h, --help
Print help and exit
--full-help
Print help, including hidden options, and exit
-V, --version
Print version and exit
-v, --verbose[=INT]
Print more information (default=`0')
-r, --reader=STRING
Only use a matching reader (default=`Yubikey')
-k, --key[=STRING]
Management key to use, if no value is specified key will be asked for
(default=`010203040506070801020304050607080102030405060708')
-a, --action=ENUM
Action to take (possible values="version", "generate", "set-mgm-key", "reset",
"pin-retries", "import-key", "import-certificate", "set-chuid",
"request-certificate", "verify-pin", "change-pin", "change-puk", "unblock-pin",
"selfsign-certificate", "delete-certificate", "read-certificate", "status",
"test-signature", "test-decipher", "list-readers", "set-ccc", "write-object",
"read-object", "attest")
Multiple actions may be given at once and will be executed in order for example
--action=verify-pin --action=request-certificate
-s, --slot=ENUM
What key slot to operate on (possible values="9a", "9c", "9d", "9e", "82", "83",
"84", "85", "86", "87", "88", "89", "8a", "8b", "8c", "8d", "8e", "8f", "90", "91",
"92", "93", "94", "95", "f9")
9a is for PIV Authentication 9c is for Digital Signature (PIN always checked) 9d is
for Key Management 9e is for Card Authentication (PIN never checked) 82-95 is for
Retired Key Management f9 is for Attestation
-A, --algorithm=ENUM
What algorithm to use (possible values="RSA1024", "RSA2048", "ECCP256", "ECCP384"
default=`RSA2048')
-H, --hash=ENUM
Hash to use for signatures (possible values="SHA1", "SHA256", "SHA384", "SHA512"
default=`SHA256')
-n, --new-key=STRING
New management key to use for action set-mgm-key, if omitted key will be asked for
--pin-retries=INT
Number of retries before the pin code is blocked
--puk-retries=INT
Number of retries before the puk code is blocked
-i, --input=STRING
Filename to use as input, - for stdin (default=`-')
-o, --output=STRING
Filename to use as output, - for stdout (default=`-')
-K, --key-format=ENUM
Format of the key being read/written (possible values="PEM", "PKCS12", "GZIP",
"DER", "SSH" default=`PEM')
-p, --password=STRING
Password for decryption of private key file, if omitted password will be asked for
-S, --subject=STRING
The subject to use for certificate request
The subject must be written as: /CN=host.example.com/OU=test/O=example.com/
--serial=INT
Serial number of the self-signed certificate
--valid-days=INT
Time (in days) until the self-signed certificate expires (default=`365')
-P, --pin=STRING
Pin/puk code for verification, if omitted pin/puk will be asked for
-N, --new-pin=STRING
New pin/puk code for changing, if omitted pin/puk will be asked for
--pin-policy=ENUM
Set pin policy for action generate or import-key. Only available on YubiKey 4
(possible values="never", "once", "always")
--touch-policy=ENUM
Set touch policy for action generate, import-key or set-mgm-key. Only available on
YubiKey 4 (possible values="never", "always", "cached")
--id=INT
Id of object for write/read object
-f, --format=ENUM
Format of data for write/read object (possible values="hex", "base64", "binary"
default=`hex')
EXAMPLES
For more information about what's happening --verbose can be added to any command. For
much more information --verbose=2 may be used.
Display what version of the application is running on the YubiKey:
yubico-piv-tool -aversion
Generate a new ECC-P256 key on device in slot 9a, will print the public key on stdout:
yubico-piv-tool -s9a -AECCP256 -agenerate
Generate a certificate request with public key from stdin, will print the resulting
request on stdout:
yubico-piv-tool -s9a -S'/CN=foo/OU=test/O=example.com/' -averify \
-arequest
Generate a self-signed certificate with public key from stdin, will print the certificate,
for later import, on stdout:
yubico-piv-tool -s9a -S'/CN=bar/OU=test/O=example.com/' -averify \
-aselfsign
Import a certificate from stdin:
yubico-piv-tool -s9a -aimport-certificate
Set a random chuid, import a key and import a certificate from a PKCS12 file, into slot
9c:
yubico-piv-tool -s9c -itest.pfx -KPKCS12 -aset-chuid \
-aimport-key -aimport-cert
Import a certificate which is larger than 2048 bytes and thus requires compression in
order to fit:
openssl x509 -in cert.pem -outform DER | gzip -9 > der.gz
yubico-piv-tool -s9c -ider.gz -KGZIP -aimport-cert
Change the management key used for administrative authentication:
yubico-piv-tool -aset-mgm-key
Delete a certificate in slot 9a, with management key being asked for:
yubico-piv-tool -adelete-certificate -s9a -k
Show some information on certificates and other data:
yubico-piv-tool -astatus
Read out the certificate from a slot and then run a signature test:
yubico-piv-tool -aread-cert -s9a
yubico-piv-tool -averify-pin -atest-signature -s9a
Import a key into slot 85 (only available on YubiKey 4) and set the touch policy (also
only available on YubiKey 4):
yubico-piv-tool -aimport-key -s85 --touch-policy=always -ikey.pem