.B NEWADDR
notification.
.TP
+.BI "\-priv " tag
+Use the private key
+.I tag
+to authenticate to the peer. The default is to use the key named in the
+.RB ` \-t '
+command-line option, or a key with type
+.B tripe
+or
+.BR tripe-dh :
+see
+.BR tripe (8)
+for the details.
+.TP
.BI "\-tunnel " tunnel
Use the named tunnel driver, rather than the default.
.\"-opts
line reporting the IP address and port number stored for
.IR peer .
.SP
-.B "ALGS"
+.BI "ALGS \fR[" peer \fR]
Emits information about the cryptographic algorithms in use, in
-key-value form. The keys are as follows.
+key-value form. If a
+.I peer
+is given, then describe the algorithms used in the association with that
+peer; otherwise describe the default algorithms.
.RS
+.PP
+The keys are as follows.
.TP
.B kx-group
Type of key-exchange group in use, currently either
sent.
.TP
.B key
-The key tag being used for the peer, as passed to the
+The (short) key tag being used for the peer, as passed to the
+.B ADD
+command.
+.TP
+.B current-key
+The full key tag of the peer's public key currently being used. This
+may change during the life of the association.
+.TP
+.B private-key
+The private key tag being used for the peer, as passed to the
.B ADD
-command. (You don't get a full key-id, since that might change while
-the daemon's running.)
+command.
+.TP
+.B current-private-key
+The full key tag of the private key currently being used for this
+association. This may change during the life of the association.
.RE
.SP
.BI "PING \fR[" options "\fR] " peer
Challenge received was old, but maybe not actually a replay. Try again.
.SS "KEYMGMT warnings"
These indicate a problem with the keyring files, or the keys stored in
-them.
-.SP
-.BI "KEYMGMT bad-private-key " message
-The private key could not be read, or failed a consistency check. If
-there was a problem with the file, usually there will have been
-.B key-file-error
-warnings before this.
-.SP
-.BI "KEYMGMT bad-public-keyring " message
-The public keyring couldn't be read. Usually, there will have been
-.B key-file-error
-warnings before this.
-.SP
-.BI "KEYMGMT key-file-error " file ":" line " " message
-Reports a specific error with the named keyring file. This probably
-indicates a bug in
-.BR key (1).
-.SP
-.BI "KEYMGMT public-key " tag " " tokens\fR...
-These messages all indicate a problem with the public key named
-.IR tag .
-.SP
-.BI "KEYMGMT public-key " tag " algorithm-mismatch"
-The algorithms specified on the public key don't match the ones for our
-private key. All the peers in a network have to use the same
-algorithms.
-.SP
-.BI "KEYMGMT public-key " tag " bad " message
-The public key couldn't be read, or is invalid.
-.SP
-.BI "KEYMGMT public-key " tag " bad-public-group-element"
-The public key is invalid. This may indicate a malicious attempt to
-introduce a bogus key.
-.SP
-.BI "KEYMGMT public-key " tag " bad-algorithm-selection"
-The algorithms listed on the public key couldn't be understood. The
-algorithm selection attributes are probably malformed and need fixing.
+them. The first token is either
+.B private-keyring
+or
+.B public-keyring
+(notated
+.IB which -keyring
+in the descriptions below) indicating which keyring file is problematic,
+and the second token is the filename of the keyring. Frequently a key
+tag may be given next, preceded by the token
+.BR key .
+.SP
+.BI "KEYMGMT public-keyring " file " key " tag " algorithm-mismatch"
+A peer's public key doesn't request the same algorithms as our private
+key.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " bad-tag-length " len
+The key attributes specify the length of MAC tag as
+.I len
+but this is an invalid value \(en either too large or not a multiple of
+eight.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " bad-tag-length-string " str
+The key attributes contain
+.I str
+where a MAC tag length was expected. The key was generated wrongly.
+.SP
+.BI "KEYMGMT private-keyring " file " key " tag " changed-group"
+The private keyring has been changed, but the new private key can't be
+used because it uses a different group for Diffie\(enHellman key
+exchange.
+.SP
+.BI "KEYMGMT " which "-keyring " file " io-error " ecode " " message
+A system error occurred while opening or reading the keyring file.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " unknown-cipher " cipher
+The key specifies the use of an unknown symmetric encryption algorithm
+.IR cipher .
+Maybe the key was generated wrongly, or maybe the version of
+Catacomb installed is too old.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " unknown-group-type " type
+The key specifies the use of a Diffie\(enHellman group of an unknown
+.IR type .
+Maybe the key was generated wrongly, or maybe the version of
+.BR tripe (8)
+is too old.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " unknown-hash " hash
+The key specifies the use of an unknown hash function
+.IR hash .
+Maybe the key was generated wrongly, or maybe the version of Catacomb
+installed is too old.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " unknown-mac " mac
+The key specifies the use of an unknown message authentication code
+.IR mac .
+Maybe the key was generated wrongly, or maybe the version of Catacomb
+installed is too old.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " unknown-mgf-cipher " mgf
+The key specifies the use of an unknown symmetric encryption function
+.I mgf
+for mask generation. Maybe the key was generated wrongly, or maybe the
+version of Catacomb installed is too old.
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " no-hmac-for-hash " hash
+No message authentication code was given explicitly, and there's no
+implementation of HMAC for the selected hash function
+.IR hash .
+.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " " alg " " name " no-key-size " hashsz
+The
+.I alg
+token is either
+.B cipher
+or
+.BR mac .
+The named algorithm requires more key material than the hash function
+can provide. You must change either the hash function, or the cipher or
+MAC.
.SP
-.BI "KEYMGMT public-key " tag " incorrect-group"
-The public key doesn't use the same group as our private key. All the
-peers in a network have to use the same group.
+.BI "KEYMGMT " which "-keyring " file " key " tag " mgf " mgf " restrictive-key-schedule"
+The cipher selected for mask-generation is unsuitable because it can't
+accept arbitrary-sized keys.
.SP
-.BI "KEYMGMT public-key " tag " not-found"
-The public key for peer
+.BI "KEYMGMT " which "-keyring " file " key-not-found " tag
+A key named
.I tag
-wasn't in the public keyring.
+couldn't be found in the keyring.
.SP
-.BI "KEYMGMT public-key " tag " unknown-type"
-The type of the public key isn't understood. Maybe you need to upgrade
-your copy of
-.BR tripe .
-(Even if you do, you'll have to regenerate your keys.)
+.BI "KEYMGMT " which "-keyring " file " line " line " " message
+The contents of the keyring file are invalid. There may well be a bug
+in the
+.BR key (1)
+program.
.SS "KX warnings"
These indicate problems during key-exchange. Many indicate either a bug
in the server (either yours or the remote one), or some kind of attack
or
.BR switch-ok .
.SP
+.BI "KX " peer " algorithms-mismatch local-private-key " privtag " peer-public-key " pubtag
+The algorithms specified in the peer's public key
+.I pubtag
+don't match the ones described in the private key
+.IR privtag .
+.SP
.BI "KX " peer " bad-expected-reply-log"
The challenges
.B tripe
some old exchange, or random packets being sent in an attempt to waste
CPU.
.SP
-.BI "KX " peer " public-key-expired"
-The peer's public key has expired. It's maintainer should have given
-you a replacement before now.
+.BI "KX " peer " " which "-key-expired"
+The local private key or the peer's public key (distinguished by
+.IR which )
+has expired. Either you or the peer's maintainer should have arranged
+for a replacement before now.
.SP
.BI "KX " peer " sending-cookie"
We've received too many bogus pre-challenge messages. Someone is trying
~mdw / tripe / blobdiff