Fixed decryption + some spelling

keepout.patch

--- keepout.sh.txt	2020-09-08 13:08:33.124744273 +0200
+++ keepout.sh	2020-09-08 14:12:39.126369975 +0200
@@ -112,7 +112,7 @@
 #   -salt
 #   __DATA__
 #
-# Encryption defaults used by "keepout" (file magic, cypher, hashing digest,
+# Encryption defaults used by "keepout" (file magic, cipher, hashing digest
 # and pbkdf2 iteration count) can only be set inside the script, at this time.
 # Change these will not effect the scripts ability to decrypt existing
 # 'keepout' files.  The order of the options does not matter.
@@ -146,7 +146,7 @@
 #   -nosalt
 #   __DATA__
 #
-# A special cypher of -none can also be used to convert unencrypted file into
+# A special cipher of -none can also be used to convert unencrypted file into
 # a 'keepout' file.  All other encryption settings options are ignored.  This
 # can be useful in some special circumstances, like reading an initial file
 # using keepout, to later saved it with the keepout's current default
@@ -182,7 +182,7 @@
 #   use "keepout" for file encryption.  Specifically my "ks" script.
 #
 # Latest version can be downloaded from
-#    https://antofthy.gitlab.io/softwre/#keepout
+#    https://antofthy.gitlab.io/software/#keepout
 #
 # ----------------------------------------------------------------------------
 # Encryption Options....
@@ -190,7 +190,7 @@
 # OpenSSL version needed by this script and for these options
 openssl_need='1.1.1'
 
-# Encryption Cypher and Digest
+# Encryption Cipher and Digest
 filemagic='KeepOut'   # Must be 7 characters, a newline is added on output.
 cipher='aes-256-cbc'  # Cipher to encrypt with, checked below
 digest='sha512'       # Digest to hash password, checked below
@@ -206,7 +206,7 @@
 min_iteration=100000 # Decrypt warning if iteration count is less than this!
 key_timeout=1800     # How long (secs) to cache password for (for file editing).
 
-# Other "openssl" options for Encrypting (do not set '-iter' here )
+# Other "openssl" options for Encrypting (do not set '-iter' here)
 # These are not actually required (-salt is default, and -iter enabled -pbkdf2)
 # but it is recommended that thay be included to make the option use clear.
 options=( -salt -pbkdf2 )
@@ -288,21 +288,21 @@
 while [ $# -gt 0 ]; do
   case "$1" in
 
-  -\?|-help|--help) Help ;; # Basic help
-  -doc|--doc)       Doc ;;  # The whole manual
+  -\?|-help|--help) Help ;;		# Basic help
+  -doc|--doc)       Doc ;;		# The whole manual
 
   -d|--decrypt) DECRYPT=true ;;
 
-  -key|--key)     shift; KEY="$1" ;;     # password caching key
-  -clear|--clear) CLEAR=true ;;          # clear the key from cache
-  -pass|--pass)   shift; PASS="$1" ;;    # openssl password method (no cache)
+  -key|--key)     shift; KEY="$1" ;;	# password caching key
+  -clear|--clear) CLEAR=true ;;		# clear the key from cache
+  -pass|--pass)   shift; PASS="$1" ;;	# openssl password method (no cache)
 
-  --) shift; break ;;    # forced end of user options
+  --) shift; break ;;			# forced end of user options
   -*) Usage "Unknown option \"$1\"" ;;
-  *)  break ;;           # unforced  end of user options
+  *)  break ;;				# unforced  end of user options
 
   esac
-  shift   # next option
+  shift  				# next option
 done
 (( $# > 0 )) && Usage "Too Many Arguments"
 
@@ -390,8 +390,10 @@
           [a-z][a-z0-9-]*) ;;  # it is a posible digest
           *) Error "Invalid digest argument in input file" ;;
         esac
-        if openssl dgst -list | sed '1d; s/  *$//; s/  */\n/g;' |
-             grep -q "^-$value$"
+        #if openssl dgst -list | sed '1d; s/  *$//; s/  */\n/g;' | 	* remark: invalid syntax
+        #     grep -q "^-$value$"					* remark: invalid regex ^-$
+        if openssl list -digest-commands | sed '1d; s/  *$//; s/  */\n/g;' |
+             grep -q "^$value$"
         then options=( "${options[@]}" "$option" "$value" )
         else Error "Unknown digest argument used in input file"
         fi
@@ -400,7 +402,7 @@
         # This could be the cipher to use (or an invalid option)
         case "$option" in
           *[^a-z0-9-]*)  # option should be lower case, numbers or dashes
-            Error "Unknwon option in input file header" ;;
+            Error "Unknown option in input file header" ;;
         esac
         if openssl enc -ciphers | sed '1d; s/  *$//; s/  */\n/g;' |
              grep -q "^$option$"