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# Atoms known by this ssh-implementation
# Lines beginning with # are comments. Empty lines are ignored. The
# first word on each line is the name of an atom.

# Compression
none
zlib

# Bulk encryption

3des-cbc         REQUIRED          three-key 3DES in CBC mode
blowfish-cbc     RECOMMENDED       Blowfish in CBC mode
arcfour          OPTIONAL          the ARCFOUR stream cipher
idea-cbc         OPTIONAL          IDEA in CBC mode
cast128-cbc      OPTIONAL          CAST-128 in CBC mode
# none             OPTIONAL          no encryption; NOT RECOMMENDED

# MAC algorithms

hmac-sha1   REQUIRED         HMAC-SHA1 (length = 20)
hmac-sha-96 RECOMMENDED      first 96 bits of HMAC-SHA1 (length = 12)
hmac-md5    OPTIONAL         HMAC-MD5 (length = 16)
hmac-md5-96 OPTIONAL         first 96 bits of HMAC-MD5 (length = 12)
# none        OPTIONAL         no MAC; NOT RECOMMENDED

# Key exchange methods

diffie-hellman-group1-sha1       REQUIRED

# Key and certificate types

ssh-dss              REQUIRED     sign      Simple DSS
x509v3               RECOMMENDED  sign      X.509 certificates
spki                 OPTIONAL     sign      SPKI certificates
pgp                  OPTIONAL     sign      OpenPGP certificates

# Services

ssh-userauth
ssh-connection