Class: Crypto::Key

Inherits:
Object
  • Object
show all
Defined in:
lib/ampk/crypto.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data, digest_string) ⇒ Key

Returns a new instance of Key.



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# File 'lib/ampk/crypto.rb', line 17

def initialize(data, digest_string)
	@public = (data =~ /^-----BEGIN (RSA|DSA) PRIVATE KEY-----$/).nil?
	@prefix = @public ? "public" : "private"
	@key = OpenSSL::PKey::RSA.new(data)
	@digest_string = digest_string
end

Instance Attribute Details

#digest_string ⇒ Object

Returns the value of attribute digest_string.



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# File 'lib/ampk/crypto.rb', line 16

def digest_string
  @digest_string
end

Class Method Details

.from_file(filename, digest_string) ⇒ Object 



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# File 'lib/ampk/crypto.rb', line 24

def self.from_file(filename, digest_string)
	self.new(File.read(filename), digest_string)
end

Instance Method Details

#decrypt(text) ⇒ Object 



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# File 'lib/ampk/crypto.rb', line 32

def decrypt(text)
	@key.send("#{@prefix}_decrypt", Base64.decode64(text))
end

#digest ⇒ Object 



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# File 'lib/ampk/crypto.rb', line 48

def digest
	OpenSSL::Digest::MD5.new(@digest_string)
end

#encrypt(text) ⇒ Object 



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# File 'lib/ampk/crypto.rb', line 28

def encrypt(text)
	Base64.encode64(@key.send("#{@prefix}_encrypt", text))
end

#public? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ampk/crypto.rb', line 44

def public?
	@public
end

#sign(data) ⇒ Object 



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# File 'lib/ampk/crypto.rb', line 36

def sign(data)
	Base64.encode64(@key.sign(digest, data))
end

#verify(signature, data) ⇒ Object 



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# File 'lib/ampk/crypto.rb', line 40

def verify(signature, data)
	@key.verify(digest, Base64.decode64(signature), data)
end