Added hardened OpenSSH policies.

policies/openssh_7_7.txt

@@ -0,0 +1,21 @@
+#
+# Official policy for hardened OpenSSH v7.7.
+#
+
+name = "Hardened OpenSSH v7.7"
+version = 1
+
+# Group exchange DH modulus sizes.
+dh_modulus_size_diffie-hellman-group-exchange-sha256 = 2048
+
+# The host key types that must match exactly (order matters).
+host keys = ssh-ed25519
+
+# The key exchange algorithms that must match exactly (order matters).
+key exchanges = curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512, diffie-hellman-group-exchange-sha256
+
+# The ciphers that must match exactly (order matters).
+ciphers = chacha20-poly1305@openssh.com, aes256-gcm@openssh.com, aes128-gcm@openssh.com, aes256-ctr, aes192-ctr, aes128-ctr
+
+# The MACs that must match exactly (order matters).
+macs = hmac-sha2-256-etm@openssh.com, hmac-sha2-512-etm@openssh.com, umac-128-etm@openssh.com

policies/openssh_7_8.txt

@@ -0,0 +1,21 @@
+#
+# Official policy for hardened OpenSSH v7.8.
+#
+
+name = "Hardened OpenSSH v7.8"
+version = 1
+
+# Group exchange DH modulus sizes.
+dh_modulus_size_diffie-hellman-group-exchange-sha256 = 2048
+
+# The host key types that must match exactly (order matters).
+host keys = ssh-ed25519
+
+# The key exchange algorithms that must match exactly (order matters).
+key exchanges = curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512, diffie-hellman-group-exchange-sha256
+
+# The ciphers that must match exactly (order matters).
+ciphers = chacha20-poly1305@openssh.com, aes256-gcm@openssh.com, aes128-gcm@openssh.com, aes256-ctr, aes192-ctr, aes128-ctr
+
+# The MACs that must match exactly (order matters).
+macs = hmac-sha2-256-etm@openssh.com, hmac-sha2-512-etm@openssh.com, umac-128-etm@openssh.com

policies/openssh_7_9.txt

@@ -0,0 +1,21 @@
+#
+# Official policy for hardened OpenSSH v7.9.
+#
+
+name = "Hardened OpenSSH v7.9"
+version = 1
+
+# Group exchange DH modulus sizes.
+dh_modulus_size_diffie-hellman-group-exchange-sha256 = 2048
+
+# The host key types that must match exactly (order matters).
+host keys = ssh-ed25519
+
+# The key exchange algorithms that must match exactly (order matters).
+key exchanges = curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512, diffie-hellman-group-exchange-sha256
+
+# The ciphers that must match exactly (order matters).
+ciphers = chacha20-poly1305@openssh.com, aes256-gcm@openssh.com, aes128-gcm@openssh.com, aes256-ctr, aes192-ctr, aes128-ctr
+
+# The MACs that must match exactly (order matters).
+macs = hmac-sha2-256-etm@openssh.com, hmac-sha2-512-etm@openssh.com, umac-128-etm@openssh.com

policies/openssh_8_0.txt

@@ -0,0 +1,21 @@
+#
+# Official policy for hardened OpenSSH v8.0.
+#
+
+name = "Hardened OpenSSH v8.0"
+version = 1
+
+# Group exchange DH modulus sizes.
+dh_modulus_size_diffie-hellman-group-exchange-sha256 = 2048
+
+# The host key types that must match exactly (order matters).
+host keys = ssh-ed25519
+
+# The key exchange algorithms that must match exactly (order matters).
+key exchanges = curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512, diffie-hellman-group-exchange-sha256
+
+# The ciphers that must match exactly (order matters).
+ciphers = chacha20-poly1305@openssh.com, aes256-gcm@openssh.com, aes128-gcm@openssh.com, aes256-ctr, aes192-ctr, aes128-ctr
+
+# The MACs that must match exactly (order matters).
+macs = hmac-sha2-256-etm@openssh.com, hmac-sha2-512-etm@openssh.com, umac-128-etm@openssh.com

policies/openssh_8_1.txt

@@ -0,0 +1,21 @@
+#
+# Official policy for hardened OpenSSH v8.1.
+#
+
+name = "Hardened OpenSSH v8.1"
+version = 1
+
+# Group exchange DH modulus sizes.
+dh_modulus_size_diffie-hellman-group-exchange-sha256 = 2048
+
+# The host key types that must match exactly (order matters).
+host keys = ssh-ed25519
+
+# The key exchange algorithms that must match exactly (order matters).
+key exchanges = curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512, diffie-hellman-group-exchange-sha256
+
+# The ciphers that must match exactly (order matters).
+ciphers = chacha20-poly1305@openssh.com, aes256-gcm@openssh.com, aes128-gcm@openssh.com, aes256-ctr, aes192-ctr, aes128-ctr
+
+# The MACs that must match exactly (order matters).
+macs = hmac-sha2-256-etm@openssh.com, hmac-sha2-512-etm@openssh.com, umac-128-etm@openssh.com

policies/openssh_8_2.txt

@@ -0,0 +1,25 @@
+#
+# Official policy for hardened OpenSSH v8.2.
+#
+
+name = "Hardened OpenSSH v8.2"
+version = 1
+
+# RSA host key sizes.
+hostkey_size_rsa-sha2-256 = 4096
+hostkey_size_rsa-sha2-512 = 4096
+
+# Group exchange DH modulus sizes.
+dh_modulus_size_diffie-hellman-group-exchange-sha256 = 2048
+
+# The host key types that must match exactly (order matters).
+host keys = rsa-sha2-512, rsa-sha2-256, ssh-ed25519
+
+# The key exchange algorithms that must match exactly (order matters).
+key exchanges = curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512, diffie-hellman-group-exchange-sha256
+
+# The ciphers that must match exactly (order matters).
+ciphers = chacha20-poly1305@openssh.com, aes256-gcm@openssh.com, aes128-gcm@openssh.com, aes256-ctr, aes192-ctr, aes128-ctr
+
+# The MACs that must match exactly (order matters).
+macs = hmac-sha2-256-etm@openssh.com, hmac-sha2-512-etm@openssh.com, umac-128-etm@openssh.com

policies/openssh_8_3.txt

@@ -0,0 +1,25 @@
+#
+# Official policy for hardened OpenSSH v8.3.
+#
+
+name = "Hardened OpenSSH v8.3"
+version = 1
+
+# RSA host key sizes.
+hostkey_size_rsa-sha2-256 = 4096
+hostkey_size_rsa-sha2-512 = 4096
+
+# Group exchange DH modulus sizes.
+dh_modulus_size_diffie-hellman-group-exchange-sha256 = 2048
+
+# The host key types that must match exactly (order matters).
+host keys = rsa-sha2-512, rsa-sha2-256, ssh-ed25519
+
+# The key exchange algorithms that must match exactly (order matters).
+key exchanges = curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512, diffie-hellman-group-exchange-sha256
+
+# The ciphers that must match exactly (order matters).
+ciphers = chacha20-poly1305@openssh.com, aes256-gcm@openssh.com, aes128-gcm@openssh.com, aes256-ctr, aes192-ctr, aes128-ctr
+
+# The MACs that must match exactly (order matters).
+macs = hmac-sha2-256-etm@openssh.com, hmac-sha2-512-etm@openssh.com, umac-128-etm@openssh.com