38 lines
1006 B
Ruby
38 lines
1006 B
Ruby
class MyAesCrypt
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@cipher = ""
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def initialize
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@cipher = OpenSSL::Cipher::Cipher.new(ENV["CIPHER_TYPE"])
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end
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def export_key(passphrase)
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# We want a 256 bit key symetric key based on passphrase
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digest = Digest::SHA256.new
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key = digest.update(passphrase)
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key = digest.digest
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ENV['AES_KEY'] = cipher_key = key # stores the key in key, and also sets the generated key on the @cipher
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ENV['AES_IV'] = cipher_iv = @cipher.random_iv # stores the iv in iv, and also sets the generated iv on the @cipher
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return cipher_key, cipher_iv
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end
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private
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def encrypt(data)
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cipher.encrypt
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cipher.key = ENV["aes_key"]
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cipher.iv = ENV["aes_iv"]
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encrypted = cipher.update(data) + cipher.final
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encrypted = Base64.encode64(encrypted)
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return encrypted
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end
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def decrypt(data)
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cipher.decrypt
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cipher.key = ENV["aes_key"]
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cipher.iv = ENV["aes_iv"]
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# Start the decryption
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decoded = Base64.decode64(data)
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decrypted = cipher.update(decoded) + cipher.final
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return decrypted
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end
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end |