added encryption

FakeKitten.sh

@@ -1,35 +1,55 @@
 #!/usr/bin/env bash
 
-if [ -z "$1" ] || [ -z "$2" ] || [[ $2 != "encode" && $2 != "decode" ]]
+if [ -z "$1" ] || [ -z "$2" ] || [[ $2 != "encode" && $2 != "decode" && $2 != "encode_enc" ]]
 	then echo "launch the script with the desired filename and operation"
 	echo "./AmazonPrimeWhatever.sh FILENAME OPERATION(encode or decode)"
 	exit
 fi
 
 
-
-
-if [ $2 = "encode" ]; then
-	imagejpg="random.jpg"
-	image="random.DNG"
-	#generate random image:
-	mx=320;my=256;head -c "$((3*mx*my))" /dev/urandom | convert -depth 8 -size "${mx}x${my}" RGB:- $imagejpg
-	mv $imagejpg $image
-	imagesize=$(du -b $image | cut -f1)
-	origsha=$(sha1sum $1 | cut -d " " -f1)
-	destimage="FakeKitten_"$imagesize"_"$1"_"$origsha"_"$image
-	mv $image $destimage
-	dd if=$1 bs=1M >> "$destimage"
-	echo "encode completed in $destimage"
+if [ $2 = "encode" ] || [ $2 = "encode_enc" ]; then
+        imagejpg="random.jpg"
+        image="random.DNG"
+        #generate random image:
+        mx=320;my=256;head -c "$((3*mx*my))" /dev/urandom | convert -depth 8 -size "${mx}x${my}" RGB:- $imagejpg
+        mv $imagejpg $image
+        imagesize=$(du -b $image | cut -f1)
+	if [ $2 = "encode" ]; then
+	        origsha=$(sha1sum $1 | cut -d " " -f1)
+	        destimage="FakeKitten_"$imagesize"_"$1"_"$origsha"_"$image
+	        mv $image $destimage
+	        dd if=$1 bs=1M >> "$destimage"
+	        echo "encode completed in $destimage"
+	fi
+	if [ $2 = "encode_enc" ]; then
+		#
+		gpg --symmetric --cipher-algo AES256 $1
+		#
+	        origsha=$(sha1sum $1.gpg | cut -d " " -f1)
+	        destimage="FakeKittenENC_"$imagesize"_"$1.gpg"_"$origsha"_"$image
+	        mv $image $destimage
+	        dd if=$1.gpg bs=1M >> "$destimage"
+	        echo "encode completed in $destimage"
+	fi
 fi
 
+
 if [ $2 = "decode" ]; then
+	imageconst=$(echo $1 | cut -d "_" -f1)
 	imagebs=$(echo $1 | cut -d "_" -f2)
 	origname=$(echo $1 | cut -d "_" -f3)
 	origsha=$(echo $1 | cut -d "_" -f4)
 	origimage=$(echo $1 | cut -d "_" -f5)
+
 	dd if=$1 bs=1M skip=$imagebs iflag=skip_bytes > "$origname"
-	echo "decode completed in $origimage, checking file integrity"
+
+	if [ $imageconst = "FakeKittenENC" ]; then
+		#decrypt the file
+		orignamenogpg=$(echo "$origname" | sed 's/.gpg//')
+		gpg --output $orignamenogpg --decrypt $origname
+	fi
+
+	echo "decode completed in $origname, checking file integrity"
 	echo $origsha"  "$origname > $origname".sha1"
 	shaoutput=$(sha1sum -c $origname".sha1")
 	echo $shaoutput
@@ -41,6 +61,10 @@ if [ $2 = "decode" ]; then
 		rm $origname".sha1"
 		exit
 	fi
+        if [ $imageconst = "FakeKittenENC" ]; then
+		#remove the file that contains .gpg at the end
+                rm $origname
+        fi
 	rm $origname".sha1"
 fi