Created
April 6, 2015 11:53
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Decrypt Rails 4 session cookie
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cookie = CGI.unescape("cookie here") | |
secret_key_base = "secret key here" | |
encrypted_cookie_salt = "encrypted cookie" | |
encrypted_signed_cookie_salt = "signed encrypted cookie" | |
key_generator = ActiveSupport::KeyGenerator.new(secret_key_base, iterations: 1000) | |
secret = key_generator.generate_key(encrypted_cookie_salt) | |
sign_secret = key_generator.generate_key(encrypted_signed_cookie_salt) | |
encryptor = ActiveSupport::MessageEncryptor.new(secret, sign_secret, serializer: ActiveSupport::MessageEncryptor::NullSerializer) | |
encryptor.decrypt_and_verify(cookie) |
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