Standard Library Functions
Explore secure C string functions used to copy, concatenate, compare, and search strings effectively. Understand why common string functions may cause vulnerabilities and learn how to use safer alternatives like strncpy, strncat, strncmp, strchr, and strstr. This lesson helps you improve the security and reliability of your C string handling.
We'll cover the following...
Common functions
The table given below summarizes some of the functions available in the string library for handling strings. These methods should be avoided because they are insecure and are likely to result in a variety of vulnerabilities.
Uncommon functions
Let’s discuss some highly recommended, secure string library functions that should be used instead of those mentioned earlier in the lesson.
strncpy( )
strncpy( ) copies the first n characters from the source string to the target string. The basic syntax of the strncpy() ...