Renaming file with meaningful name. Updating README.md accordingly

Makefile

@@ -1,11 +1,13 @@
 CFLAGS=-g -Os -Wall -Werror
 
-all: srtp.o srtp-decrypt.o
-	$(CC) -o srtp-decrypt srtp-decrypt.o srtp.o -lpcap -lgcrypt
+all: srtp.o srtp-util.o
+	$(CC) -o srtp-util srtp-util.o srtp.o -lpcap -lgcrypt
 
 clean:
-	rm -rf srtp-decrypt *.o
+	rm -rf srtp-util *.o
 
 check:
-	./srtp-decrypt -k aSBrbm93IGFsbCB5b3VyIGxpdHRsZSBzZWNyZXRz < ./marseillaise-srtp.pcap | text2pcap -t "%M:%S." -u 10000,10000 - - > ./marseillaise-rtp.pcap
-	./srtp-decrypt -E -k aSBrbm93IGFsbCB5b3VyIGxpdHRsZSBzZWNyZXRz < ./marseillaise-rtp.pcap | text2pcap -t "%M:%S." -u 10000,10000 - - > ./marseillaise-srtp-new.pcap
+	# Decrypt the pcap
+	./srtp-util -k aSBrbm93IGFsbCB5b3VyIGxpdHRsZSBzZWNyZXRz < ./marseillaise-srtp.pcap | text2pcap -t "%M:%S." -u 10000,10000 - - > ./marseillaise-rtp.pcap
+	# Encrypt already decrypted pcap
+	./srtp-util -E -k aSBrbm93IGFsbCB5b3VyIGxpdHRsZSBzZWNyZXRz < ./marseillaise-rtp.pcap | text2pcap -t "%M:%S." -u 10000,10000 - - > ./marseillaise-srtp-new.pcap

README.md

@@ -1,20 +1,17 @@
-srtp-decrypt
-============
+## srtp-util
+srtp-util is a tool that deciphers SRTP / ciphers RTP packets contained in a network capture. It needs the Master Key
+exchanged by other means to do its job. The output is dumped in such a way that output can be fed to text2pcap, to recreate a pcap.
 
-srtp-decrypt is a tool that deciphers SRTP packets contained in a network capture. It needs the Master Key exchanged by other means to do its job.
-Deciphered RTP is dumped in such a way that output can be fed to text2pcap, to recreate a deciphered capture.
+_Refer Makefile for usage example_
 
-dependencies
-============
+## dependencies
+SRTP part has been taken from VLC project. It depends on `libgcrypt` for ciphering and MAC.
+Pcap processing is based on `libpcap`.
 
-SRTP part has been taken from VLC project. It depends on libgcrypt for ciphering and MAC.
-Pcap processing is based on libpcap.
+Typically, on Debian, 
+`# apt-get install libpcap-dev libgcrypt-dev.`
 
-Typically, on Debian, # apt-get install libpcap-dev libgcrypt-dev.
-
-caveats
-=======
-
-Isolating a single RTP flow from a network capture is a hard job, too hard to be done in this tool. Hence, srtp-decrypt expects to process a single RTP flow.
+## caveats
+Isolating a single RTP flow from a network capture is a hard job, too hard to be done in this tool. Hence, srtp-util expects to process a single RTP flow.
 Network capture shall not contain ICMP, ARP or reverse RTP flow for example, as those packets will not be deciphered correctly by the tool.
 Moreover, RTP offset in frames is expected to be constant, by default 42, but can be set to 46 in case of 802.1q tagging.