Update README to reflect recent changes + fix typos

README.md

@@ -8,23 +8,26 @@ The idea is based on concepts seen in ptrace-parasite and early CRIU versions. T
 ```
 make
 ```
-##### copmpilation options
+##### compilation options
 You can enable support for compression and checksumming of memory dump file:
  - `COMPRESS_LZ4=1` - requires liblz4
  - `CHECKSUM_MD5=1` - requires libcrypto and openssl headers
 
+ There is also `ENCRYPT` option for building `libencrypt.so` that provides sample implementation of encryption layer based on libcrypto API. memcr is not linked with libencrypt.so, but it can be preloaded with `LD_PRELOAD`.
+ - `ENCRYPT=1` - requires libcrypto and openssl headers
+
 Ubuntu 22.04:
 ```
 sudo apt-get install liblz4-dev liblz4-1
 sudo apt-get install libssl-dev libssl3
 ```
 
- ```
- make COMPRESS_LZ4=1 CHECKSUM_MD5=1
- ```
+```
+make COMPRESS_LZ4=1 CHECKSUM_MD5=1 ENCRYPT=1
+```
 
 ##### cross compilation
-Currently supported architectures are x86_64, arm and arm64. You can cross compile memcr by providing CROSS_COMPILE prefix. i.e.:
+Currently, supported architectures are x86_64, arm and arm64. You can cross compile memcr by providing `CROSS_COMPILE` prefix. i.e.:
 ```
 make CROSS_COMPILE=arm-linux-gnueabihf-
 make CROSS_COMPILE=aarch64-linux-gnu-
@@ -40,25 +43,26 @@ Basic usage to tinker with memcr is:
 ```
 memcr -p <target pid>
 ```
-For the list of available options check memcr help:
+For the list of available options, check memcr help:
 ```
-memcr [-p PID] [-d DIR] [-S DIR] [-l PORT|PATH] [-n] [-f] [-c]
+memcr [-h] [-p PID] [-d DIR] [-S DIR] [-l PORT|PATH] [-n] [-m] [-f] [-z] [-c] [-e]
 options:
   -h --help             help
   -p --pid              target processs pid
   -d --dir              dir where memory dump is stored (defaults to /tmp)
-  -S --parasite-socket-dir dirwhere socket to communicate with parasite is created
+  -S --parasite-socket-dir dir where socket to communicate with parasite is created
         (abstract socket will be used if no path specified)
   -l --listen           work as a service waiting for requests on a socket
         -l PORT: TCP port number to listen for requests on
         -l PATH: filesystem path for UNIX domain socket file (will be created)
   -n --no-wait          no wait for key press
-  -m --proc-mem get pages from /proc/pid/mem
-  -f --rss-file include file mapped memory
-  -z --compress compress memory dump
-  -c --checksum enable md5 checksum for memory dump
+  -m --proc-mem         get pages from /proc/pid/mem
+  -f --rss-file         include file mapped memory
+  -z --compress         compress memory dump
+  -c --checksum         enable md5 checksum for memory dump
+  -e --encrypt          enable encryption of memory dump
 ```
-There is also support for client / server scenario where memcr runs as a deamon and listens for commands from a client process. The main reason for supporting this is that memcr needs rather high privileges to hijack target process and it's a good idea to keep it separate from client that can run in a container with low privileges.
+memcr also supports client / server scenario where memcr runs as a deamon and listens for commands from a client process. The main reason for supporting this is that memcr needs rather high privileges to hijack target process and it's a good idea to keep it separate from memcr-client that can run in a container with low privileges.
 
 memcr daemon:
 ```