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ssh: custom config key types #40686

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Jul 21, 2018
Merged

ssh: custom config key types #40686

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28 changes: 25 additions & 3 deletions nixos/modules/programs/ssh.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -62,6 +62,29 @@ in
'';
};

# Allow DSA keys for now. (These were deprecated in OpenSSH 7.0.)
pubkeyAcceptedKeyTypes = mkOption {
type = types.listOf types.str;
default = [
"+ssh-dss"
];
example = [ "ssh-ed25519" "ssh-rsa" ];
description = ''
Specifies the key types that will be used for public key authentication.
'';
};

hostKeyAlgorithms = mkOption {
type = types.listOf types.str;
default = [
"+ssh-dss"
];
example = [ "ssh-ed25519" "ssh-rsa" ];
description = ''
Specifies the host key algorithms that the client wants to use in order of preference.
'';
};

extraConfig = mkOption {
type = types.lines;
default = "";
Expand Down Expand Up @@ -189,9 +212,8 @@ in

ForwardX11 ${if cfg.forwardX11 then "yes" else "no"}

# Allow DSA keys for now. (These were deprecated in OpenSSH 7.0.)
PubkeyAcceptedKeyTypes +ssh-dss
HostKeyAlgorithms +ssh-dss
PubkeyAcceptedKeyTypes ${concatStringsSep "," cfg.pubkeyAcceptedKeyTypes}
HostKeyAlgorithms ${concatStringsSep "," cfg.hostKeyAlgorithms}

${cfg.extraConfig}
'';
Expand Down