  We propose a cipher similar to the One Time Pad and McEliece cipher based on
a subband coding scheme. The encoding process is an approximation to the One
Time Pad encryption scheme. We present results of numerical experiments which
suggest that a brute force attack to the proposed scheme does not result in all
possible plaintexts, as the One Time Pad does, but still the brute force attack
does not compromise the system. However, we demonstrate that the cipher is
vulnerable to a chosen-plaintext attack.
