+config SYS_VSNPRINTF
+ bool "Enable safe version of sprintf()"
+ help
+ Since sprintf() can overflow its buffer, it is common to use
+ snprintf() instead, which knows the buffer size and can avoid
+ overflow. However, this does increase code size slightly (for
+ Thumb-2, about 420 bytes). Enable this option for safety when
+ using sprintf() with data you do not control.
+
+config REGEX
+ bool "Enable regular expression support"
+ default y if NET
+ help
+ If this variable is defined, U-Boot is linked against the
+ SLRE (Super Light Regular Expression) library, which adds
+ regex support to some commands, for example "env grep" and
+ "setexpr".
+
+config LIB_RAND
+ bool "Pseudo-random library support "
+ help
+ This library provides pseudo-random number generator functions.
+
+source lib/rsa/Kconfig
+
+menu "Hashing Support"
+
+config SHA1
+ bool "Enable SHA1 support"
+ help
+ This option enables support of hashing using SHA1 algorithm.
+ The hash is calculated in software.
+ The SHA1 algorithm produces a 160-bit (20-byte) hash value
+ (digest).
+
+config SHA256
+ bool "Enable SHA256 support"
+ help
+ This option enables support of hashing using SHA256 algorithm.
+ The hash is calculated in software.
+ The SHA256 algorithm produces a 256-bit (32-byte) hash value
+ (digest).
+
+config SHA_HW_ACCEL
+ bool "Enable hashing using hardware"
+ help
+ This option enables hardware acceleration
+ for SHA1/SHA256 hashing.
+ This affects the 'hash' command and also the
+ hash_lookup_algo() function.
+
+config SHA_PROG_HW_ACCEL
+ bool "Enable Progressive hashing support using hardware"
+ depends on SHA_HW_ACCEL
+ help
+ This option enables hardware-acceleration for
+ SHA1/SHA256 progressive hashing.
+ Data can be streamed in a block at a time and the hashing
+ is performed in hardware.
+endmenu
+
+config ERRNO_STR
+ bool "Enable function for getting errno-related string message"
+ help
+ The function errno_str(int errno), returns a pointer to the errno
+ corresponding text message:
+ - if errno is null or positive number - a pointer to "Success" message
+ - if errno is negative - a pointer to errno related message
+