SSH KEYGEN NOT WORKING SSH COPY ID PASSWORD
This will write two files into the current directory: id_ecdsa_sk_rk and id_ecdsa_sk_rk.pub.I'm trying to setup a connection with a remote server and since I don't want to insert the password every time I decided to create a public-private key pair and use it for authentication. To import the key permanently, instead run: This works great for short visits, but it won’t last forever – you’ll need to run ssh-add again if you reboot the computer, for example. This will load a “key handle” into the SSH agent and make the key available for use on the new computer. To use the SSH key on a new computer, make sure you have ssh-agent running and simply run: This works the same as before, except a resident key is easier to import to a new computer because it can be loaded directly from the security key. you can enable this when creating your SSH key: If your security key supports FIDO2 resident keys*. Or, if your security key supports it, you can use a FIDO2 resident key. They also mention with a FIDO2 resident key you don't need to copy the SSH pub key to each machine. The Yubico page outlining creating a security key backed SSH key for GitHub has a bit more info on the fact that their older keys could only do ecdsa as well, it was with 5.2.3 that they added ed25519. My understanding is that the private key never leaves the device, they talk to the secure element via FIDO2, PIV or GnuPG to handle the cryptographic operations. It appears that with firmware 5.2.3 they implemented OpenPGP 3.4 which brought in support for ed25519/ecdsa and apparently that algorithm support extends to the FIDO2 implementation as well. Signatures supporting it would become : should we look into which mode is required (pre-hashed or not) for FIDO2 : do yubikeys do the operations on the hardware key itself or is the key retrieved and then used on the computer? Regard to collisions, everybody would shun it like MD5, and having SHA-512 ever turned out to be flaky in any way, in particular with it would sort-of allow use of EdDSA with MD5,Įxcept of course don't do that! EdDSA is used with SHA-512 and if Some specific contexts even if the hash function turned out not to beĬollision-resistant. The sort-of justification isĪcademic: it was about saying that the signature would remain secure in Pre-hashing is called "pure" and so people want it because purity is The message itself but a hash of the message, and that would be fine forīearSSL's goals, but unfortunately this is not what people use in X.509Ĭertificates with EdDSA. There is an EdDSA mode called "pre-hashed" in which the "M" above is not Has carefully avoided that, and that's how it fits in very low RAM. In RAM, until I get the public key from the next one in the chain, and With EdDSA, I would have to keep a complete certificate With RSA and ECDSA, I can hash each certificate as it comesĪnd verify the signature only when I process the next certificate, and Iĭon't have to buffer any complete certificate (only the signature value, Issued it, then the certificate of the CA that issued the previous one,Īnd so on). (first the server's certificate, then the certificate of the CA that In an X.509Ĭertificate chain, in TLS, the certificates come in EE-first order Thus, when verifying, you cannot start hashing M until youĪlready have the signature value and the public key. Signature value), A (the public key) and M (the message data), in that Or verify, you need to hash the concatenation of R (part of the Ed25519 is inconvenient, because in order to sign So I've asked the creator of our cryptographic library and got this answer when asking him about ED25519 support: Other operating systems are not supported.Ĩ<- END BUG REPORT. Openssh Version 8.5p1 ( that comes with above GIT version) Key enrollment failed: invalid format Moolticute Version - If Involved Firmware Version Sk_enroll: WinHello API Error -2147417829:UnknownErrorĭebug1: sshsk_enroll: provider "winhello.dll" failure -1ĭebug1: ssh-sk-helper: Enrollment failed: invalid formatĭebug1: client_converse: helper returned error -4 Init_winhello: WARNING! This should not be like this! WinHello API Error: Is user available=0, User=0. You may need to touch your authenticator to authorize key generation.ĭebug1: start_helper: starting /usr/lib/ssh/ssh-sk-helperĭebug1: sshsk_enroll: provider "winhello.dll", device "(null)", application "ssh:", userid "Administrator", flags 0x01, challenge len 0ĭebug1: sshsk_enroll: using random challengeĭebug1: sshsk_open: provider winhello.dll implements version 0x00070000Ĭheck_enroll_options: requested user Administrator
Generating public/private ed25519-sk key pair. $ ssh-keygen.exe -w winhello.dll -vvvv -t ed25519-sk -f id_ecdsa_sk -C "spare test yubikey#1" -O user=Administrator WinHello API Error -2147417829 Step by step guide to reproduce the problem
Ssh-keygen create an SK type key pair Actual behavior
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