Security of a Keystream Cipher with Secret Initial Value. - Robert S. Winternitz (CRYPTO, 1982)

Producing a One-Way Hash Function from DES. - Robert S. Winternitz (CRYPTO, 1983)

A Secure One-Way Hash Function Built from DES. - Robert S. Winternitz (S&P, 1984)

Chosen-Key Attacks on a Block Cipher. - Robert S. Winternitz; Martin E. Hellman (Cryptologia, 1987)