User password or PIN Number has become mandatory in every secret communication, financial and monitory transactions these days. Communicating and strong one-time password or PIN number increases the potential rise of the security. Crypto Council for Innovation (CCI) is developing many PIN security requirements as encrypted symmetric keys in structures called key blocks, which contain protected keys, usage constraints. In these key blocks, there is no expectation that previously established keys can be reused. In the present paper, password or PIN encryption and migration technique is explained using Catalan number sequences. Here the encrypted password or PIN is inserted in a long random text at different positions and the text is communicated to receiver. The positions of the inserted PIN characters are secret between the sender and the receiver.