ref: 0ec1cfd78b495e9be40e4aa24e35b2aa5d5e5704
dir: /man/8/createsignerkey/
.TH CREATESIGNERKEY 8 .SH NAME createsignerkey \- create signer key on authentication server .SH SYNOPSIS .B auth/createsignerkey [ .BI -a " alg" ] [ .BI -f " keyfile" ] [ .BI -e " expiry" ] [ .BI -b " bitsize" ] .I name .SH DESCRIPTION .I Createsignerkey creates public and private keys that are used by a server acting as `signer' to generate certificates for users. .I Name appears as signer in each certificate. The .I expiry date has the form .IR ddmmyyyy , is converted to seconds since the epoch (see .IR daytime (2)) and stored in the .IR keyfile ; by default the server's certificate never expires. .PP The key will be .I bitsize long (default: 512 bits) with a minimum of 32 bits and a maximum of 4096 bits. .I Keyfile is the file in which the server stores its keys; the default is .BR /keydb/signerkey , and many authentication programs such as .IR logind (8) by default expect to find their server key there. Creating a signer's default key afresh typically invalidates all certificates previously issued by that signer, because their signatures will not verify. The mode of the .I keyfile should be set to be readable only by the user running those programs. .PP The .B -a option specifies the signature algorithm. Currently .I alg can be either .B elgamal or .BR rsa . RSA keys are now used by default. .SH FILES .B /keydb/signerkey .SH SOURCE .B /appl/cmd/auth/createsignerkey.b .SH SEE ALSO .IR security-auth (2), .IR keyring-gensk (2), .IR logind (8), .IR signer (8)