Two examples for Ascon-AEAD128 and Ascon-Hash256

Fix typos

No need to input key size as the size for ascon AEAD algorithm is fixed

Add an example for algorithm Ascon-Hash256

Author: helkoulak

crypto/README.md

@@ -6,6 +6,8 @@ For further usage and details:
 
 Please see the [3des/README.md](3des/README.md) for 3des.
 
+Please see the [ascon/README.md](ascon/README.md) for ascon.
+
 Please see the [aes/README.md](aes/README.md) for aes.
 
 Please see the [camellia/README.md](camellia/README.md) for camellia.

crypto/ascon/Makefile

@@ -0,0 +1,12 @@
+CC=gcc
+CFLAGS=-Wall -g
+WOLFSSL_INSTALL_DIR=/usr/local
+LIBS=-L$(WOLFSSL_INSTALL_DIR)/lib -lwolfssl
+
+ascon-file-encrypt: ascon-file-encrypt.o
+	$(CC) -o $@ $^ $(CFLAGS) $(LIBS) 
+
+.PHONY: clean
+
+clean:
+	rm -f *.o ascon-file-encrypt

crypto/ascon/README.md

@@ -0,0 +1,20 @@
+How to use ascon-file-encrypt.c
+
+1) a. Compile wolfSSL with ./configure --enable-pwdbased --enable-ascon --enable-experimental, run
+      'make', and then install by typing 'sudo make install'.
+   b. In the crypto/ascon directory run the Makefile by typing 'make'.
+2)  Make a file to encode. Can be any file (ex. .txt .in .out .file etc.)
+3)  run the executable, for help run with -h flag. Basic command is as follows:
+        ./ascon-file-encrypt <-option> -i <input.file> -o <output.file>
+
+    typing -e for option will encrypt the input.file onto the output.file.
+    typing -d for option will decrypt the input.file onto the output.file.
+        NOTE: When decrypting make sure the key is the same used for the
+        encryption, otherwise it won't decode correctly. Which is the idea.
+        Only those with the key will be able to decode the message. If no
+        key is entered into the command line, it will use "0123456789abcdef"
+        by default.
+
+4)  Running 'make clean' will delete the executable as well as any created
+    files. Making sure that the only files left are 'ascon-file-encrypt.c',
+    'Makefile', and 'README'.