Class: CryptoToolbox::Oracles::UserProfileEncryptionOracle

Inherits:
Object
  • Object
show all
Defined in:
lib/crypto-toolbox/oracles/user_profile_encryption_oracle.rb

Instance Method Summary collapse

Constructor Details

#initialize(key = SecureRandom.random_bytes(16)) ⇒ UserProfileEncryptionOracle

Returns a new instance of UserProfileEncryptionOracle.



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# File 'lib/crypto-toolbox/oracles/user_profile_encryption_oracle.rb', line 4

def initialize(key = SecureRandom.random_bytes(16) )
  @key = key
end

Instance Method Details

#decrypt_profile(ciphertext) ⇒ Object 



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# File 'lib/crypto-toolbox/oracles/user_profile_encryption_oracle.rb', line 21

def decrypt_profile(ciphertext)
  plaintext = Ciphers::Aes.new.decipher_ecb(@key,ciphertext).to_crypt_buffer.strip_padding.str
  parse_profile(plaintext)
end

#encrypted_profile_for(email) ⇒ Object 



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# File 'lib/crypto-toolbox/oracles/user_profile_encryption_oracle.rb', line 17

def encrypted_profile_for(email)
  Ciphers::Aes.new.encipher_ecb(@key,profile_for(email))
end

#parse_profile(string) ⇒ Object 



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# File 'lib/crypto-toolbox/oracles/user_profile_encryption_oracle.rb', line 13

def parse_profile(string)
  string.split("&").each_with_object({}){|pair,hsh| k,v = pair.split("="); hsh[k.to_sym] = v }
end

#profile_for(email) ⇒ Object 



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# File 'lib/crypto-toolbox/oracles/user_profile_encryption_oracle.rb', line 8

def profile_for(email)
  email.gsub!(/[&=]/,"") # sanitize meta chars
  "email=#{email}&uid=10&role=guest"
end