Class: Nis::Struct::Message

Inherits:
Object
  • Object
show all
Defined in:
lib/nis/struct/message.rb

Constant Summary collapse

TYPE_PLAIN = 
1
TYPE_ENCRYPTED = 
2

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value = '', type: :plain, private_key: nil, public_key: nil) ⇒ Message

Returns a new instance of Message.



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# File 'lib/nis/struct/message.rb', line 12

def initialize(value = '', type: :plain, private_key: nil, public_key: nil)
  @value = value
  @type = (type == :encrypted) ? TYPE_ENCRYPTED : TYPE_PLAIN
  @private_key = private_key
  @public_key = public_key
end

Instance Attribute Details

#payload ⇒ String

Returns the current value of payload.

Returns:

  • (String) —

    the current value of payload



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# File 'lib/nis/struct/message.rb', line 6

def payload
  @payload
end

#private_key ⇒ Object (readonly)

Returns the value of attribute private_key.



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# File 'lib/nis/struct/message.rb', line 7

def private_key
  @private_key
end

#public_key ⇒ String

Returns the current value of public_key.

Returns:

  • (String) —

    the current value of public_key



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# File 'lib/nis/struct/message.rb', line 6

def public_key
  @public_key
end

#type ⇒ Integer

Returns the current value of type.

Returns:

  • (Integer) —

    the current value of type



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# File 'lib/nis/struct/message.rb', line 6

def type
  @type
end

#value ⇒ String

Returns the current value of value.

Returns:

  • (String) —

    the current value of value



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# File 'lib/nis/struct/message.rb', line 6

def value
  @value
end

Instance Method Details

#==(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nis/struct/message.rb', line 64

def ==(other)
  @value == other.value
end

#bytesize ⇒ Integer

Returns:

  • (Integer) 


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# File 'lib/nis/struct/message.rb', line 44

def bytesize
  payload.bytesize
end

#decrypt! ⇒ Object 



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# File 'lib/nis/struct/message.rb', line 26

def decrypt!
  bin_sk = fix_private_key(@private_key).scan(/../).map(&:hex).reverse.pack('C*')
  bin_pk = (public_key || @public_key).scan(/../).map(&:hex).pack('C*')
  @value = Nis::Util::Ed25519.decrypt(bin_sk, bin_pk, payload)
  @type = TYPE_PLAIN
end

#encrypt! ⇒ Object 



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# File 'lib/nis/struct/message.rb', line 19

def encrypt!
  bin_sk = fix_private_key(@private_key).scan(/../).map(&:hex).reverse.pack('C*')
  bin_pk = (public_key || @public_key).scan(/../).map(&:hex).pack('C*')
  @value = Nis::Util::Ed25519.encrypt(bin_sk, bin_pk, value)
  @type = TYPE_ENCRYPTED
end

#encrypted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nis/struct/message.rb', line 34

def encrypted?
  @type == TYPE_ENCRYPTED
end

#plain? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nis/struct/message.rb', line 39

def plain?
  @type == TYPE_PLAIN
end

#to_hash ⇒ Hash

Returns:

  • (Hash) 


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# File 'lib/nis/struct/message.rb', line 54

def to_hash
  { payload: payload, type: @type }
end

#to_s ⇒ String

Returns:

  • (String) 


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# File 'lib/nis/struct/message.rb', line 59

def to_s
  @value.to_s
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nis/struct/message.rb', line 49

def valid?
  bytesize <= 512
end