FIDO2-ASSERT(1) General Commands Manual FIDO2-ASSERT(1) (NAME) fido2-assert - FIDO2 (SYNOPSIS) fido2-assert -G [-bdhpruvw] [-t option] [-i input_file] [-o output_file] device fido2-assert -V [-dhpv] [-i input_file] key_file [type] (DESCRIPTION) fido2-assert (assertion) FIDO2 . fido2-assert . (INPUT FORMAT) . fido2-assert . (OUTPUT FORMAT) . fido2-assert 0 . fido2-assert 1 . : -G fido2-assert device . -V fido2-assert PEM key_file type type es256 ( ECDSA NIST P-256 SHA-256) es384 ( ECDSA NIST P-384 SHA-384) rs256 ( RSA PKCS#1.5 SHA-256) eddsa ( EDDSA Curve25519 SHA-512) . type es256 . -b "largeBlobKey" . -h hmac-secret FIDO2 . . -d fido2-assert stderr . -i input_file fido2-assert stdin input_file . -o output_file fido2-assert stdout output_file . -p (user presence) . . -r (resident credential). -r fido2-assert . CTAP 2.1 "discoverable credentials" ( ) . -t option option / option "key=value" . : up=true|false . uv=true|false . pin=true|false fido2-assert PIN . -t . -u U2F. fido2-assert FIDO2 U2F . -v PIN . . -w fido2-assert . Windows Hello . tty fido2-assert PIN . stdin . (INPUT FORMAT) fido2-assert (blob) base64 UTF-8 ('\n') . fido2-assert : 1. (blob base64) 2. (relying party id) ( UTF-8) 3. (blob base64) 4. hmac hmac-secret FIDO2 (blob base64) fido2-assert : 1. (blob base64) 2. (relying party id) ( UTF-8) 3. CBOR (blob base64) 4. (blob base64) UTF-8 fido2-assert NUL . (OUTPUT FORMAT) fido2-assert (blob) base64 UTF-8 ('\n') . fido2-assert : 1. (blob base64) 2. (relying party id) ( UTF-8) 3. CBOR (blob base64) 4. (blob base64) 5. (blob base64) 6. hmac hmac-secret FIDO2 (blob base64) 7. ("largeBlobKey ") (blob base64). fido2-assert . (EXAMPLES) cred es256 fido2-cred(1) /dev/hidraw5 : $ echo assertion challenge | openssl sha256 -binary | base64 > assert_param $ echo relying party >> assert_param $ head -1 cred >> assert_param $ tail -n +2 cred > pubkey $ fido2-assert -G -i assert_param /dev/hidraw5 | fido2-assert -V pubkey es256 (SEE ALSO) fido2-cred(1), fido2-token(1) Linux 6.12.107+deb13-amd64 July 3, 2023 Linux 6.12.107+deb13-amd64