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Contents
require 'net/ssh/transport/key_expander'
require 'net/ssh/transport/hmac/md5'
require 'net/ssh/transport/hmac/md5_96'
require 'net/ssh/transport/hmac/sha1'
require 'net/ssh/transport/hmac/sha1_96'
require 'net/ssh/transport/hmac/sha2_256'
require 'net/ssh/transport/hmac/sha2_256_96'
require 'net/ssh/transport/hmac/sha2_512'
require 'net/ssh/transport/hmac/sha2_512_96'
require 'net/ssh/transport/hmac/none'
# Implements a simple factory interface for fetching hmac implementations, or
# for finding the key lengths for hmac implementations.s
module Net::SSH::Transport::HMAC
# The mapping of SSH hmac algorithms to their implementations
MAP = {
'hmac-md5' => MD5,
'hmac-md5-96' => MD5_96,
'hmac-sha1' => SHA1,
'hmac-sha1-96' => SHA1_96,
'none' => None
}
# add mapping to sha2 hmac algorithms if they're available
MAP['hmac-sha2-256'] = SHA2_256 if defined?(::Net::SSH::Transport::HMAC::SHA2_256)
MAP['hmac-sha2-256-96'] = SHA2_256_96 if defined?(::Net::SSH::Transport::HMAC::SHA2_256_96)
MAP['hmac-sha2-512'] = SHA2_512 if defined?(::Net::SSH::Transport::HMAC::SHA2_512)
MAP['hmac-sha2-512-96'] = SHA2_512_96 if defined?(::Net::SSH::Transport::HMAC::SHA2_512_96)
# Retrieves a new hmac instance of the given SSH type (+name+). If +key+ is
# given, the new instance will be initialized with that key.
def self.get(name, key="", parameters = {})
impl = MAP[name] or raise ArgumentError, "hmac not found: #{name.inspect}"
impl.new(Net::SSH::Transport::KeyExpander.expand_key(impl.key_length, key, parameters))
end
# Retrieves the key length for the hmac of the given SSH type (+name+).
def self.key_length(name)
impl = MAP[name] or raise ArgumentError, "hmac not found: #{name.inspect}"
impl.key_length
end
end
Version data entries
6 entries across 6 versions & 5 rubygems