forked from pool/openssh
Marcus Meissner
5252cd62e2
- Add crypto-policies support [bsc#1211301]
* Add patches:
- openssh-9.6p1-crypto-policies.patch
- openssh-9.6p1-crypto-policies-man.patch
OBS-URL: https://build.opensuse.org/request/show/1155471
OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=256
649 lines
23 KiB
Diff
649 lines
23 KiB
Diff
Index: openssh-9.6p1/ssh_config.5
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===================================================================
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--- openssh-9.6p1.orig/ssh_config.5
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+++ openssh-9.6p1/ssh_config.5
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@@ -403,17 +403,14 @@ A single argument of
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causes no CNAMEs to be considered for canonicalization.
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This is the default behaviour.
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.It Cm CASignatureAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies which algorithms are allowed for signing of certificates
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by certificate authorities (CAs).
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-The default is:
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-.Bd -literal -offset indent
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-ssh-ed25519,ecdsa-sha2-nistp256,
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-ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,
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-sk-ssh-ed25519@openssh.com,
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-sk-ecdsa-sha2-nistp256@openssh.com,
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-rsa-sha2-512,rsa-sha2-256
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-.Ed
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-.Pp
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If the specified list begins with a
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.Sq +
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character, then the specified algorithms will be appended to the default set
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@@ -542,20 +539,26 @@ If the option is set to
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(the default),
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the check will not be executed.
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.It Cm Ciphers
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies the ciphers allowed and their order of preference.
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Multiple ciphers must be comma-separated.
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If the specified list begins with a
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.Sq +
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-character, then the specified ciphers will be appended to the default set
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-instead of replacing them.
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+character, then the specified ciphers will be appended to the built-in
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+openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq -
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character, then the specified ciphers (including wildcards) will be removed
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-from the default set instead of replacing them.
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+from the built-in openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq ^
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character, then the specified ciphers will be placed at the head of the
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-default set.
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+built-in openssh default set.
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.Pp
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The supported ciphers are:
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.Bd -literal -offset indent
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@@ -571,13 +574,6 @@ aes256-gcm@openssh.com
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chacha20-poly1305@openssh.com
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.Ed
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.Pp
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-The default is:
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-.Bd -literal -offset indent
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-chacha20-poly1305@openssh.com,
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-aes128-ctr,aes192-ctr,aes256-ctr,
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-aes128-gcm@openssh.com,aes256-gcm@openssh.com
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-.Ed
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-.Pp
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The list of available ciphers may also be obtained using
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.Qq ssh -Q cipher .
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.It Cm ClearAllForwardings
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@@ -979,6 +975,12 @@ command line will be passed untouched to
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The default is
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.Dq no .
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.It Cm GSSAPIKexAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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The list of key exchange algorithms that are offered for GSSAPI
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key exchange. Possible values are
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.Bd -literal -offset 3n
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@@ -991,9 +993,8 @@ gss-nistp256-sha256-,
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gss-curve25519-sha256-
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.Ed
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.Pp
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-The default is
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-.Dq gss-gex-sha1-,gss-group14-sha1- .
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This option only applies to protocol version 2 connections using GSSAPI.
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+.Pp
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.It Cm HashKnownHosts
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Indicates that
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.Xr ssh 1
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@@ -1012,36 +1013,26 @@ will not be converted automatically,
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but may be manually hashed using
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.Xr ssh-keygen 1 .
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.It Cm HostbasedAcceptedAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies the signature algorithms that will be used for hostbased
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authentication as a comma-separated list of patterns.
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Alternately if the specified list begins with a
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.Sq +
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character, then the specified signature algorithms will be appended
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-to the default set instead of replacing them.
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+to the built-in openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq -
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character, then the specified signature algorithms (including wildcards)
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-will be removed from the default set instead of replacing them.
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+will be removed from the built-in openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq ^
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character, then the specified signature algorithms will be placed
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-at the head of the default set.
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-The default for this option is:
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-.Bd -literal -offset 3n
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-ssh-ed25519-cert-v01@openssh.com,
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-ecdsa-sha2-nistp256-cert-v01@openssh.com,
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-ecdsa-sha2-nistp384-cert-v01@openssh.com,
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-ecdsa-sha2-nistp521-cert-v01@openssh.com,
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-sk-ssh-ed25519-cert-v01@openssh.com,
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-sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,
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-rsa-sha2-512-cert-v01@openssh.com,
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-rsa-sha2-256-cert-v01@openssh.com,
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-ssh-ed25519,
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-ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,
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-sk-ssh-ed25519@openssh.com,
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-sk-ecdsa-sha2-nistp256@openssh.com,
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-rsa-sha2-512,rsa-sha2-256
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-.Ed
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+at the head of the built-in openssh default set.
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.Pp
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The
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.Fl Q
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@@ -1094,6 +1085,17 @@ to prefer their algorithms.
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.Pp
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The list of available signature algorithms may also be obtained using
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.Qq ssh -Q HostKeyAlgorithms .
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+.Pp
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+The proposed
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+.Cm HostKeyAlgorithms
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+during KEX are limited to the set of algorithms that is defined in
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+.Cm PubkeyAcceptedAlgorithms
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+and therefore they are indirectly affected by system-wide
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+.Xr crypto_policies 7 .
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+.Xr crypto_policies 7 can not handle the list of host key algorithms directly
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+as doing so would break the order given by the
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+.Pa known_hosts
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+file.
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.It Cm HostKeyAlias
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Specifies an alias that should be used instead of the
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real host name when looking up or saving the host key
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@@ -1311,31 +1313,26 @@ it may be zero or more of:
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and
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.Cm pam .
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.It Cm KexAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies the available KEX (Key Exchange) algorithms.
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Multiple algorithms must be comma-separated.
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If the specified list begins with a
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.Sq +
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-character, then the specified algorithms will be appended to the default set
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-instead of replacing them.
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+character, then the specified methods will be appended to the built-in
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+openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq -
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character, then the specified algorithms (including wildcards) will be removed
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-from the default set instead of replacing them.
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+from the built-in openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq ^
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character, then the specified algorithms will be placed at the head of the
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-default set.
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-The default is:
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-.Bd -literal -offset indent
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-sntrup761x25519-sha512@openssh.com,
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-curve25519-sha256,curve25519-sha256@libssh.org,
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-ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,
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-diffie-hellman-group-exchange-sha256,
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-diffie-hellman-group16-sha512,
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-diffie-hellman-group18-sha512,
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-diffie-hellman-group14-sha256,
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-diffie-hellman-group14-sha1
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-.Ed
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+built-in openssh default set.
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.Pp
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The list of available key exchange algorithms may also be obtained using
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.Qq ssh -Q kex .
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@@ -1445,37 +1442,34 @@ function, and all code in the
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file.
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This option is intended for debugging and no overrides are enabled by default.
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.It Cm MACs
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies the MAC (message authentication code) algorithms
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in order of preference.
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The MAC algorithm is used for data integrity protection.
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Multiple algorithms must be comma-separated.
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If the specified list begins with a
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.Sq +
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-character, then the specified algorithms will be appended to the default set
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-instead of replacing them.
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+character, then the specified algorithms will be appended to the built-in
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+openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq -
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character, then the specified algorithms (including wildcards) will be removed
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-from the default set instead of replacing them.
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+from the built-in openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq ^
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character, then the specified algorithms will be placed at the head of the
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-default set.
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+built-in openssh default set.
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.Pp
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The algorithms that contain
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.Qq -etm
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calculate the MAC after encryption (encrypt-then-mac).
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These are considered safer and their use recommended.
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.Pp
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-The default is:
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-.Bd -literal -offset indent
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-umac-64-etm@openssh.com,umac-128-etm@openssh.com,
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-hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,
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-hmac-sha1-etm@openssh.com,
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-umac-64@openssh.com,umac-128@openssh.com,
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-hmac-sha2-256,hmac-sha2-512,hmac-sha1
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-.Ed
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-.Pp
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The list of available MAC algorithms may also be obtained using
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.Qq ssh -Q mac .
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.It Cm NoHostAuthenticationForLocalhost
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@@ -1666,39 +1660,32 @@ instead of continuing to execute and pas
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The default is
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.Cm no .
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.It Cm PubkeyAcceptedAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies the signature algorithms that will be used for public key
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authentication as a comma-separated list of patterns.
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If the specified list begins with a
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.Sq +
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-character, then the algorithms after it will be appended to the default
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-instead of replacing it.
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+character, then the algorithms after it will be appended to the built-in
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+openssh default instead of replacing it.
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If the specified list begins with a
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.Sq -
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character, then the specified algorithms (including wildcards) will be removed
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-from the default set instead of replacing them.
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+from the built-in openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq ^
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character, then the specified algorithms will be placed at the head of the
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-default set.
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-The default for this option is:
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-.Bd -literal -offset 3n
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-ssh-ed25519-cert-v01@openssh.com,
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-ecdsa-sha2-nistp256-cert-v01@openssh.com,
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-ecdsa-sha2-nistp384-cert-v01@openssh.com,
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-ecdsa-sha2-nistp521-cert-v01@openssh.com,
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-sk-ssh-ed25519-cert-v01@openssh.com,
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-sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,
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-rsa-sha2-512-cert-v01@openssh.com,
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-rsa-sha2-256-cert-v01@openssh.com,
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-ssh-ed25519,
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-ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,
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-sk-ssh-ed25519@openssh.com,
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-sk-ecdsa-sha2-nistp256@openssh.com,
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-rsa-sha2-512,rsa-sha2-256
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-.Ed
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+built-in openssh default set.
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.Pp
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The list of available signature algorithms may also be obtained using
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.Qq ssh -Q PubkeyAcceptedAlgorithms .
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+.Pp
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+This option affects also
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+.Cm HostKeyAlgorithms
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.It Cm PubkeyAuthentication
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Specifies whether to try public key authentication.
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The argument to this keyword must be
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@@ -2395,7 +2382,9 @@ This file provides the vendor defaults a
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configuration file does not exist.
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.El
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.Sh SEE ALSO
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-.Xr ssh 1
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+.Xr ssh 1 ,
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+.Xr crypto-policies 7 ,
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+.Xr update-crypto-policies 8
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.Sh AUTHORS
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.An -nosplit
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OpenSSH is a derivative of the original and free
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Index: openssh-9.6p1/sshd_config.5
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===================================================================
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--- openssh-9.6p1.orig/sshd_config.5
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+++ openssh-9.6p1/sshd_config.5
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@@ -381,17 +381,14 @@ If the argument is
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then no banner is displayed.
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By default, no banner is displayed.
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.It Cm CASignatureAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies which algorithms are allowed for signing of certificates
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by certificate authorities (CAs).
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-The default is:
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-.Bd -literal -offset indent
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-ssh-ed25519,ecdsa-sha2-nistp256,
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-ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,
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-sk-ssh-ed25519@openssh.com,
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-sk-ecdsa-sha2-nistp256@openssh.com,
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-rsa-sha2-512,rsa-sha2-256
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-.Ed
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-.Pp
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If the specified list begins with a
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.Sq +
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character, then the specified algorithms will be appended to the default set
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@@ -527,20 +524,26 @@ The default is
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indicating not to
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.Xr chroot 2 .
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.It Cm Ciphers
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies the ciphers allowed.
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Multiple ciphers must be comma-separated.
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If the specified list begins with a
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.Sq +
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-character, then the specified ciphers will be appended to the default set
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-instead of replacing them.
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+character, then the specified ciphers will be appended to the built-in
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+openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq -
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character, then the specified ciphers (including wildcards) will be removed
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-from the default set instead of replacing them.
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+from the built-in openssh default set instead of replacing them.
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If the specified list begins with a
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.Sq ^
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character, then the specified ciphers will be placed at the head of the
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-default set.
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+built-in openssh default set.
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.Pp
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The supported ciphers are:
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.Pp
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@@ -567,13 +570,6 @@ aes256-gcm@openssh.com
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chacha20-poly1305@openssh.com
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.El
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.Pp
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-The default is:
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-.Bd -literal -offset indent
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-chacha20-poly1305@openssh.com,
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-aes128-ctr,aes192-ctr,aes256-ctr,
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-aes128-gcm@openssh.com,aes256-gcm@openssh.com
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-.Ed
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-.Pp
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The list of available ciphers may also be obtained using
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.Qq ssh -Q cipher .
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.It Cm ClientAliveCountMax
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@@ -764,52 +760,45 @@ For this to work
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.Cm GSSAPIKeyExchange
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needs to be enabled in the server and also used by the client.
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.It Cm GSSAPIKexAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
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+.Xr update-crypto-policies 8 .
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+.Pp
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The list of key exchange algorithms that are accepted by GSSAPI
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key exchange. Possible values are
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.Bd -literal -offset 3n
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-gss-gex-sha1-,
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-gss-group1-sha1-,
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-gss-group14-sha1-,
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-gss-group14-sha256-,
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-gss-group16-sha512-,
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-gss-nistp256-sha256-,
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+gss-gex-sha1-
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+gss-group1-sha1-
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+gss-group14-sha1-
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+gss-group14-sha256-
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+gss-group16-sha512-
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+gss-nistp256-sha256-
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gss-curve25519-sha256-
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.Ed
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-.Pp
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-The default is
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-.Dq gss-gex-sha1-,gss-group14-sha1- .
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This option only applies to protocol version 2 connections using GSSAPI.
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.It Cm HostbasedAcceptedAlgorithms
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+The default is handled system-wide by
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+.Xr crypto-policies 7 .
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+Information about defaults, how to modify the defaults and how to customize
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+existing policies with sub-policies are present in manual page
|
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+.Xr update-crypto-policies 8 .
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+.Pp
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Specifies the signature algorithms that will be accepted for hostbased
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authentication as a list of comma-separated patterns.
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Alternately if the specified list begins with a
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.Sq +
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character, then the specified signature algorithms will be appended to
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-the default set instead of replacing them.
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+the built-in openssh set instead of replacing them.
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If the specified list begins with a
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.Sq -
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character, then the specified signature algorithms (including wildcards)
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-will be removed from the default set instead of replacing them.
|
|
+will be removed from the built-in openssh set instead of replacing them.
|
|
If the specified list begins with a
|
|
.Sq ^
|
|
character, then the specified signature algorithms will be placed at
|
|
-the head of the default set.
|
|
-The default for this option is:
|
|
-.Bd -literal -offset 3n
|
|
-ssh-ed25519-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp256-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp384-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp521-cert-v01@openssh.com,
|
|
-sk-ssh-ed25519-cert-v01@openssh.com,
|
|
-sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,
|
|
-rsa-sha2-512-cert-v01@openssh.com,
|
|
-rsa-sha2-256-cert-v01@openssh.com,
|
|
-ssh-ed25519,
|
|
-ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,
|
|
-sk-ssh-ed25519@openssh.com,
|
|
-sk-ecdsa-sha2-nistp256@openssh.com,
|
|
-rsa-sha2-512,rsa-sha2-256
|
|
-.Ed
|
|
+the head of the built-in openssh default set.
|
|
.Pp
|
|
The list of available signature algorithms may also be obtained using
|
|
.Qq ssh -Q HostbasedAcceptedAlgorithms .
|
|
@@ -876,25 +865,15 @@ is specified, the location of the socket
|
|
.Ev SSH_AUTH_SOCK
|
|
environment variable.
|
|
.It Cm HostKeyAlgorithms
|
|
+The default is handled system-wide by
|
|
+.Xr crypto-policies 7 .
|
|
+Information about defaults, how to modify the defaults and how to customize
|
|
+existing policies with sub-policies are present in manual page
|
|
+.Xr update-crypto-policies 8 .
|
|
+.Pp
|
|
Specifies the host key signature algorithms
|
|
that the server offers.
|
|
The default for this option is:
|
|
-.Bd -literal -offset 3n
|
|
-ssh-ed25519-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp256-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp384-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp521-cert-v01@openssh.com,
|
|
-sk-ssh-ed25519-cert-v01@openssh.com,
|
|
-sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,
|
|
-rsa-sha2-512-cert-v01@openssh.com,
|
|
-rsa-sha2-256-cert-v01@openssh.com,
|
|
-ssh-ed25519,
|
|
-ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,
|
|
-sk-ssh-ed25519@openssh.com,
|
|
-sk-ecdsa-sha2-nistp256@openssh.com,
|
|
-rsa-sha2-512,rsa-sha2-256
|
|
-.Ed
|
|
-.Pp
|
|
The list of available signature algorithms may also be obtained using
|
|
.Qq ssh -Q HostKeyAlgorithms .
|
|
.It Cm IgnoreRhosts
|
|
@@ -1027,20 +1006,26 @@ file on logout.
|
|
The default is
|
|
.Cm yes .
|
|
.It Cm KexAlgorithms
|
|
+The default is handled system-wide by
|
|
+.Xr crypto-policies 7 .
|
|
+Information about defaults, how to modify the defaults and how to customize
|
|
+existing policies with sub-policies are present in manual page
|
|
+.Xr update-crypto-policies 8 .
|
|
+.Pp
|
|
Specifies the available KEX (Key Exchange) algorithms.
|
|
Multiple algorithms must be comma-separated.
|
|
Alternately if the specified list begins with a
|
|
.Sq +
|
|
-character, then the specified algorithms will be appended to the default set
|
|
-instead of replacing them.
|
|
+character, then the specified methods will be appended to the built-in
|
|
+openssh default set instead of replacing them.
|
|
If the specified list begins with a
|
|
.Sq -
|
|
character, then the specified algorithms (including wildcards) will be removed
|
|
-from the default set instead of replacing them.
|
|
+from the built-in openssh default set instead of replacing them.
|
|
If the specified list begins with a
|
|
.Sq ^
|
|
character, then the specified algorithms will be placed at the head of the
|
|
-default set.
|
|
+built-in openssh default set.
|
|
The supported algorithms are:
|
|
.Pp
|
|
.Bl -item -compact -offset indent
|
|
@@ -1072,16 +1057,6 @@ ecdh-sha2-nistp521
|
|
sntrup761x25519-sha512@openssh.com
|
|
.El
|
|
.Pp
|
|
-The default is:
|
|
-.Bd -literal -offset indent
|
|
-sntrup761x25519-sha512@openssh.com,
|
|
-curve25519-sha256,curve25519-sha256@libssh.org,
|
|
-ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,
|
|
-diffie-hellman-group-exchange-sha256,
|
|
-diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,
|
|
-diffie-hellman-group14-sha256,diffie-hellman-group14-sha1
|
|
-.Ed
|
|
-.Pp
|
|
The list of available key exchange algorithms may also be obtained using
|
|
.Qq ssh -Q KexAlgorithms .
|
|
.It Cm ListenAddress
|
|
@@ -1167,21 +1142,27 @@ function, and all code in the
|
|
file.
|
|
This option is intended for debugging and no overrides are enabled by default.
|
|
.It Cm MACs
|
|
+The default is handled system-wide by
|
|
+.Xr crypto-policies 7 .
|
|
+Information about defaults, how to modify the defaults and how to customize
|
|
+existing policies with sub-policies are present in manual page
|
|
+.Xr update-crypto-policies 8 .
|
|
+.Pp
|
|
Specifies the available MAC (message authentication code) algorithms.
|
|
The MAC algorithm is used for data integrity protection.
|
|
Multiple algorithms must be comma-separated.
|
|
If the specified list begins with a
|
|
.Sq +
|
|
-character, then the specified algorithms will be appended to the default set
|
|
-instead of replacing them.
|
|
+character, then the specified algorithms will be appended to the built-in
|
|
+openssh default set instead of replacing them.
|
|
If the specified list begins with a
|
|
.Sq -
|
|
character, then the specified algorithms (including wildcards) will be removed
|
|
-from the default set instead of replacing them.
|
|
+from the built-in openssh default set instead of replacing them.
|
|
If the specified list begins with a
|
|
.Sq ^
|
|
character, then the specified algorithms will be placed at the head of the
|
|
-default set.
|
|
+built-in openssh default set.
|
|
.Pp
|
|
The algorithms that contain
|
|
.Qq -etm
|
|
@@ -1224,15 +1205,6 @@ umac-64-etm@openssh.com
|
|
umac-128-etm@openssh.com
|
|
.El
|
|
.Pp
|
|
-The default is:
|
|
-.Bd -literal -offset indent
|
|
-umac-64-etm@openssh.com,umac-128-etm@openssh.com,
|
|
-hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,
|
|
-hmac-sha1-etm@openssh.com,
|
|
-umac-64@openssh.com,umac-128@openssh.com,
|
|
-hmac-sha2-256,hmac-sha2-512,hmac-sha1
|
|
-.Ed
|
|
-.Pp
|
|
The list of available MAC algorithms may also be obtained using
|
|
.Qq ssh -Q mac .
|
|
.It Cm Match
|
|
@@ -1614,36 +1586,26 @@ or equivalent.)
|
|
The default is
|
|
.Cm yes .
|
|
.It Cm PubkeyAcceptedAlgorithms
|
|
+The default is handled system-wide by
|
|
+.Xr crypto-policies 7 .
|
|
+Information about defaults, how to modify the defaults and how to customize
|
|
+existing policies with sub-policies are present in manual page
|
|
+.Xr update-crypto-policies 8 .
|
|
+.Pp
|
|
Specifies the signature algorithms that will be accepted for public key
|
|
authentication as a list of comma-separated patterns.
|
|
Alternately if the specified list begins with a
|
|
.Sq +
|
|
-character, then the specified algorithms will be appended to the default set
|
|
-instead of replacing them.
|
|
+character, then the specified algorithms will be appended to the built-in
|
|
+openssh default set instead of replacing them.
|
|
If the specified list begins with a
|
|
.Sq -
|
|
character, then the specified algorithms (including wildcards) will be removed
|
|
-from the default set instead of replacing them.
|
|
+from the built-in openssh default set instead of replacing them.
|
|
If the specified list begins with a
|
|
.Sq ^
|
|
character, then the specified algorithms will be placed at the head of the
|
|
-default set.
|
|
-The default for this option is:
|
|
-.Bd -literal -offset 3n
|
|
-ssh-ed25519-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp256-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp384-cert-v01@openssh.com,
|
|
-ecdsa-sha2-nistp521-cert-v01@openssh.com,
|
|
-sk-ssh-ed25519-cert-v01@openssh.com,
|
|
-sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,
|
|
-rsa-sha2-512-cert-v01@openssh.com,
|
|
-rsa-sha2-256-cert-v01@openssh.com,
|
|
-ssh-ed25519,
|
|
-ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,
|
|
-sk-ssh-ed25519@openssh.com,
|
|
-sk-ecdsa-sha2-nistp256@openssh.com,
|
|
-rsa-sha2-512,rsa-sha2-256
|
|
-.Ed
|
|
+built-in openssh default set.
|
|
.Pp
|
|
The list of available signature algorithms may also be obtained using
|
|
.Qq ssh -Q PubkeyAcceptedAlgorithms .
|
|
@@ -2122,7 +2084,9 @@ This file should be writable by root onl
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr sftp-server 8 ,
|
|
-.Xr sshd 8
|
|
+.Xr sshd 8 ,
|
|
+.Xr crypto-policies 7 ,
|
|
+.Xr update-crypto-policies 8
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
OpenSSH is a derivative of the original and free
|