Data Encryption Standard (DES)

• FIPS 46-3 (in PDF)
• FBox code in C.
• FBox code in Java.
• Differential cryptanalysis of DES: some notes.
• Differential cryptanalysis additional notes.
• DualKeys.java, a Java program to calculate the simplest dual keys for DES. Other keys are combinations of these.
• S-Box distribution (from running SBoxDistTest.java)