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module \$add (A, B, Y);
  parameter A_SIGNED = 0;
  parameter B_SIGNED = 0;
  parameter A_WIDTH = 1;
  parameter B_WIDTH = 1;
  parameter Y_WIDTH = 1;

  input [A_WIDTH-1:0] A;
  input [B_WIDTH-1:0] B;
  output [Y_WIDTH-1:0] Y;

  parameter _TECHMAP_BITS_CONNMAP_ = 0;
  parameter _TECHMAP_CONNMAP_A_ = 0;
  parameter _TECHMAP_CONNMAP_B_ = 0;

  wire _TECHMAP_FAIL_ = A_WIDTH != B_WIDTH || B_WIDTH < Y_WIDTH ||
                        _TECHMAP_CONNMAP_A_ != _TECHMAP_CONNMAP_B_;

  assign Y = A << 1;
endmodule
oes not support ARC4", ) @pytest.mark.requires_backend_interface(interface=CipherBackend) class TestARC4(object): test_rfc = generate_stream_encryption_test( load_nist_vectors, os.path.join("ciphers", "ARC4"), [ "rfc-6229-40.txt", "rfc-6229-56.txt", "rfc-6229-64.txt", "rfc-6229-80.txt", "rfc-6229-128.txt", "rfc-6229-192.txt", "rfc-6229-256.txt", ], lambda key, **kwargs: algorithms.ARC4(binascii.unhexlify(key)), )