Authenticating numeric input - C Tutorial

Contents

• Introduction Introduction

  • Write better secure C code

    56s
  • Using the exercise files

    1m 14s
  • Compiling the code

    1m 21s
• 1. On the Defensive 1. On the Defensive

  • Understanding the weaknesses of C

    2m 36s
  • What the bad guys look for

    2m 2s
  • Hunting exploits

    2m 15s
  • Documenting everything

    2m 22s
• 2. Undefined Behaviors 2. Undefined Behaviors

  • Formatting preprocessor directives

    1m 23s
  • Using an assignment as a condition

    1m 31s
  • Avoiding putchar() in a while loop

    1m 35s
  • Using the system() call

    1m 58s
  • Accessing elements beyond the array size

    2m 2s
  • Converting integers

    2m 26s
  • Looping with floating point values

    1m 39s
  • Using return values

    1m 58s
  • Confirming when EOF has been read

    2m 31s
  • Challenge: Fix the code

    1m 12s
  • Solution: Fix the code

    2m 12s
• 3. Input Validation 3. Input Validation

  • Authenticating numeric input

    2m 54s
  • Converting strings to numbers

    2m 23s
  • Using int values instead of char

    2m 32s
  • Reading input with fgets()

    4m 7s
  • Filtering string input

    4m 14s
  • Challenge: Confirming input

    1m 2s
  • Solution: Confirming input

    1m 54s
• 4. String Management 4. String Management

  • Allocating strings

    2m 40s
  • Avoiding bad string assignment

    1m 28s
  • Working with string literals

    2m
  • Minding string functions

    3m 47s
  • Storing passwords and codes

    1m 15s
  • Clearing data after use

    1m 13s
  • Challenge: The secret code

    40s
  • Solution: The secret code

    1m 43s
• 5. Issues with Pointers 5. Issues with Pointers

  • Initializing pointers and buffers

    2m 8s
  • Checking for NULL pointers

    1m 37s
  • Performing pointer math

    2m 6s
  • Freeing pointers

    1m 59s
  • Challenge: Enter the combination

    56s
  • Solution: Enter the combination

    1m 55s
• Conclusion Conclusion

  • Next steps

    1m 15s