cryptroot: Retry mounting drives, if key does not work (you may add it).

decrypt-root-with-usb/ubuntu-20.04/usr/share/initramfs-tools/scripts/local-top/cryptroot

@@ -123,23 +123,6 @@ setup_mapping() {
         fi
     fi
 
-    if [ -z "${CRYPTTAB_OPTION_keyscript+x}" ]; then
-       # Wait for USB to settle
-       /bin/sleep 3
-
-       # Test all devices
-       mkdir /mnt
-       echo -n "Searching for cryptkey.txt on available disks... "
-       local partition
-       for partition in `cat /proc/partitions |awk '{print $4}'|tail -n +3`; do
-           if mount /dev/$partition /mnt 2>/dev/null; then
-               cat /mnt/cryptkey.txt >> /tmp/cryptkeys.txt 2>/dev/null
-               umount /dev/$partition
-           fi
-       done
-       echo "done."
-    fi
-    
     get_crypt_type # set CRYPTTAB_TYPE to the type of crypt device
     local count=0 maxtries="${CRYPTTAB_OPTION_tries:-3}" fstype vg rv
     while [ $maxtries -le 0 ] || [ $count -lt $maxtries ]; do
@@ -147,6 +130,23 @@ setup_mapping() {
             # unlock via keyfile
             unlock_mapping "$CRYPTTAB_KEY"
         else
+	    if [ -z "${CRYPTTAB_OPTION_keyscript+x}" ]; then
+		# Wait for USB to settle
+		/bin/sleep 3
+
+		# Test all devices
+		mkdir /mnt
+		echo -n "Searching for cryptkey.txt on available disks... "
+		local partition
+		for partition in `cat /proc/partitions |awk '{print $4}'|tail -n +3`; do
+		    if mount /dev/$partition /mnt 2>/dev/null; then
+			cat /mnt/cryptkey.txt >> /tmp/cryptkeys.txt 2>/dev/null
+			umount /dev/$partition
+		    fi
+		done
+		echo "done."
+	    fi
+    
 	    if [ -s /tmp/cryptkeys.txt ]; then
 		local keyfound
                 keyfound=0

rand/rand

@@ -115,7 +115,10 @@ randdata() {
 	key=$(echo "$seed" | openssl sha256 -hex | cut -d' ' -f2)
 	iv=$(echo "$seed" | openssl sha512 -hex | cut -d' ' -f2)
     fi
+    # single core = 743MiB/s
     < /dev/zero openssl enc -aes-128-ctr -K $key -iv $iv 2>/dev/null
+    # single core = 184MiB/s
+    # openssl rand 2000000000
 }
 export -f randdata