31 lines
1.0 KiB
Ruby
31 lines
1.0 KiB
Ruby
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require 'net/ssh/transport/hmac/md5'
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require 'net/ssh/transport/hmac/md5_96'
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require 'net/ssh/transport/hmac/sha1'
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require 'net/ssh/transport/hmac/sha1_96'
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require 'net/ssh/transport/hmac/none'
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# Implements a simple factory interface for fetching hmac implementations, or
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# for finding the key lengths for hmac implementations.s
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module Net::SSH::Transport::HMAC
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# The mapping of SSH hmac algorithms to their implementations
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MAP = {
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'hmac-md5' => MD5,
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'hmac-md5-96' => MD5_96,
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'hmac-sha1' => SHA1,
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'hmac-sha1-96' => SHA1_96,
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'none' => None
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}
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# Retrieves a new hmac instance of the given SSH type (+name+). If +key+ is
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# given, the new instance will be initialized with that key.
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def self.get(name, key="")
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impl = MAP[name] or raise ArgumentError, "hmac not found: #{name.inspect}"
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impl.new(key)
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end
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# Retrieves the key length for the hmac of the given SSH type (+name+).
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def self.key_length(name)
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impl = MAP[name] or raise ArgumentError, "hmac not found: #{name.inspect}"
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impl.key_length
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end
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end
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