diff --git a/bin/v_add_sys_user_ssl b/bin/v_add_sys_user_ssl
deleted file mode 100755
index 4d9d870f7..000000000
--- a/bin/v_add_sys_user_ssl
+++ /dev/null
@@ -1,58 +0,0 @@
-#!/bin/bash
-# info: adding ssl certificate
-
-#----------------------------------------------------------#
-#                    Variable&Function                     #
-#----------------------------------------------------------#
-
-# Argument defenition
-user=$1
-ssl=$2
-
-# Importing variables
-source $VESTA/conf/vars.conf
-source $V_CONF/vesta.conf
-source $V_FUNC/shared.func
-source $V_FUNC/ssl.func
-
-#----------------------------------------------------------#
-#                    Verifications                         #
-#----------------------------------------------------------#
-
-# Checking arg number
-check_args '2' "$#" 'user ssl'
-
-# Checking argument format
-format_validation 'user' 'ssl'
-
-# Checking user
-is_user_valid
-
-# Checking user is active
-is_user_suspended
-
-# Checking certificate name
-is_cert_free
-
-# Checking template
-is_cert_valid "$V_TMP"
-
-
-#----------------------------------------------------------#
-#                       Action                             #
-#----------------------------------------------------------#
-
-# Adding certificate to user dir
-mv $V_TMP/$ssl.crt $V_USERS/$user/ssl/
-mv $V_TMP/$ssl.key $V_USERS/$user/ssl/
-
-
-#----------------------------------------------------------#
-#                       Vesta                              #
-#----------------------------------------------------------#
-
-# Logging
-log_history "$V_EVENT" "v_del_sys_user_ssl $user $ssl"
-log_event 'system' "$V_EVENT"
-
-exit
diff --git a/bin/v_add_web_domain b/bin/v_add_web_domain
index 5b00bf695..f5a5843bf 100755
--- a/bin/v_add_web_domain
+++ b/bin/v_add_web_domain
@@ -198,14 +198,14 @@ increase_user_value "$user" '$U_WEB_DOMAINS'
 
 # Defining domain variables
 v_str="DOMAIN='$domain'"
-v_str="$v_str IP='$ip'"
+v_str="$v_str IP='$ip' IP6=''"
 v_str="$v_str U_DISK='0'"
 v_str="$v_str U_BANDWIDTH='0'"
 v_str="$v_str TPL='$template'"
 v_str="$v_str ALIAS='$aliases'"
 v_str="$v_str $template_data"    # Inserting PHP, CGI and ELOG keys
 v_str="$v_str STATS='' STATS_AUTH=''"
-v_str="$v_str SSL='' SSL_HOME=''"
+v_str="$v_str SSL='no' SSL_HOME='single'"
 v_str="$v_str NGINX='' NGINX_EXT='' SUSPEND='no' DATE='$V_DATE'"
 
 # Registering domain
diff --git a/bin/v_add_web_domain_alias b/bin/v_add_web_domain_alias
index 67b5357de..fed222385 100755
--- a/bin/v_add_web_domain_alias
+++ b/bin/v_add_web_domain_alias
@@ -82,7 +82,7 @@ upd_web_domain_values
 del_web_config
 add_web_config
 
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
@@ -96,7 +96,7 @@ if [ ! -z "$NGINX" ]; then
     del_web_config
     add_web_config
 
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
         tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
         conf="$V_HOME/$user/conf/snginx.conf"
diff --git a/bin/v_add_web_domain_cgi b/bin/v_add_web_domain_cgi
index 6cc4df201..fbd34b742 100755
--- a/bin/v_add_web_domain_cgi
+++ b/bin/v_add_web_domain_cgi
@@ -64,7 +64,7 @@ del_web_config
 add_web_config
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
diff --git a/bin/v_add_web_domain_elog b/bin/v_add_web_domain_elog
index dd193a3b0..0805d06fc 100755
--- a/bin/v_add_web_domain_elog
+++ b/bin/v_add_web_domain_elog
@@ -64,7 +64,7 @@ del_web_config
 add_web_config
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
@@ -78,7 +78,7 @@ if [ ! -z "$NGINX" ]; then
     del_web_config
     add_web_config
 
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
         tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
         conf="$V_HOME/$user/conf/snginx.conf"
diff --git a/bin/v_add_web_domain_nginx b/bin/v_add_web_domain_nginx
index 41b9cc6db..1121250c9 100755
--- a/bin/v_add_web_domain_nginx
+++ b/bin/v_add_web_domain_nginx
@@ -68,7 +68,7 @@ conf="$V_HOME/$user/conf/nginx.conf"
 upd_web_domain_values
 add_web_config
 
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
     tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
     conf="$V_HOME/$user/conf/snginx.conf"
diff --git a/bin/v_add_web_domain_ssl b/bin/v_add_web_domain_ssl
index 95ae3157a..1225359e6 100755
--- a/bin/v_add_web_domain_ssl
+++ b/bin/v_add_web_domain_ssl
@@ -9,7 +9,7 @@
 user=$1
 domain=$(idn -t --quiet -u "$2" )
 domain_idn=$(idn -t --quiet -a "$domain")
-ssl=$3
+ssl_dir=$3
 ssl_home=${4-single}
 
 # Importing variables
@@ -25,10 +25,10 @@ source $V_FUNC/ip.func
 #----------------------------------------------------------#
 
 # Checking arg number
-check_args '3' "$#" 'user domain ssl [sslhome]'
+check_args '3' "$#" 'user domain ssl_dir [ssl_home]'
 
 # Checking argument format
-format_validation 'user' 'domain' 'ssl'
+format_validation 'user' 'domain' 'ssl_dir'
 
 # Checking web system is enabled
 is_system_enabled 'web'
@@ -59,12 +59,20 @@ is_web_domain_cert_valid
 #                       Action                             #
 #----------------------------------------------------------#
 
+# Adding certificate to user data directory
+cp -f $ssl_dir/$domain.crt $V_USERS/$user/ssl/$domain.crt
+cp -f $ssl_dir/$domain.key $V_USERS/$user/ssl/$domain.key
+cp -f $ssl_dir/$domain.crt $V_USERS/$user/ssl/$domain.pem
+if [ -e "$ssl_dir/$domain.ca" ]; then
+    cp -f $ssl_dir/$domain.ca $V_USERS/$user/ssl/$domain.ca
+    cat $V_USERS/$user/ssl/$domain.ca >> $V_USERS/$user/ssl/$domain.pem
+fi
+
 # Parsing domain values
 get_web_domain_values
 conf="$V_HOME/$user/conf/shttpd.conf"
 tpl_file="$V_WEBTPL/apache_$TPL.stpl"
-SSL=$ssl
-SSL_HOME=$ssl_home
+SSL_HOME="$ssl_home"
 
 # Checking ip ownership
 is_sys_ip_owner
@@ -76,8 +84,12 @@ upd_web_domain_values
 add_web_config
 
 # Adding certificate to user dir
-cp -f $V_USERS/$user/ssl/$SSL.crt $ssl_cert
-cp -f $V_USERS/$user/ssl/$SSL.key $ssl_key
+cp -f $V_USERS/$user/ssl/$domain.crt $V_HOME/$user/conf/ssl.$domain.crt
+cp -f $V_USERS/$user/ssl/$domain.key $V_HOME/$user/conf/ssl.$domain.key
+cp -f $V_USERS/$user/ssl/$domain.pem $V_HOME/$user/conf/ssl.$domain.pem
+if [ -e "$V_USERS/$user/ssl/$domain.ca" ]; then
+    cp -f $V_USERS/$user/ssl/$domain.ca $V_HOME/$user/conf/ssl.$domain.ca
+fi
 
 # Running template trigger
 if [ -x $V_WEBTPL/apache_$template.sh ]; then
@@ -115,8 +127,8 @@ fi
 increase_user_value "$user" '$U_WEB_SSL'
 
 # Adding ssl values
-update_web_domain_value '$SSL' "$SSL"
 update_web_domain_value '$SSL_HOME' "$SSL_HOME"
+update_web_domain_value '$SSL' 'yes'
 
 # Logging
 log_history "$V_EVENT" "v_del_web_domain_ssl $user $domain"
diff --git a/bin/v_backup_sys_user b/bin/v_backup_sys_user
index 058369932..ad17abba7 100755
--- a/bin/v_backup_sys_user
+++ b/bin/v_backup_sys_user
@@ -100,31 +100,6 @@ if [ -e "$V_USERS/$user/backup.excludes" ]; then
     cp -r $V_USERS/$user/backup.excludes $tmpdir/vesta/
 fi
 
-if [ -e "$V_USERS/$user/cron.conf" ]; then
-    echo -e "$(date "+%F %T") cron.conf"
-    cp -r $V_USERS/$user/cron.conf $tmpdir/vesta/
-fi
-
-if [ -e "$V_USERS/$user/db.conf" ]; then
-    echo -e "$(date "+%F %T") db.conf"
-    cp -r $V_USERS/$user/db.conf $tmpdir/vesta/
-fi
-
-if [ -e "$V_USERS/$user/dns.conf" ]; then
-    echo -e "$(date "+%F %T") dns.conf"
-    cp -r $V_USERS/$user/dns.conf $tmpdir/vesta/
-fi
-
-if [ -e "$V_USERS/$user/mail.conf" ]; then
-    echo -e "$(date "+%F %T") mail.conf"
-    cp -r $V_USERS/$user/mail.conf $tmpdir/vesta/
-fi
-
-
-if [ -e "$V_USERS/$user/web.conf" ]; then
-    echo -e "$(date "+%F %T") web.conf"
-    cp -r $V_USERS/$user/web.conf $tmpdir/vesta/
-fi
 
 echo
 
@@ -205,7 +180,7 @@ then
             sed -n "$top_line,$bottom_line p" $conf > conf/httpd.conf
 
             # SSL check
-            if [ ! -z "$SSL" ]; then
+            if [ "$SSL" = 'yes' ]; then
                 tpl_file="$V_WEBTPL/apache_$TPL.stpl"
                 conf="$V_HOME/$user/conf/shttpd.conf"
                 get_web_config_brds
@@ -221,7 +196,7 @@ then
             sed -n "$top_line,$bottom_line p" $conf > conf/nginx.conf
 
             # SSL check
-            if [ ! -z "$SSL" ] ; then
+            if [ "$SSL" = 'yes' ] ; then
                 tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
                 conf="$V_HOME/$user/conf/snginx.conf"
                 get_web_config_brds
@@ -235,8 +210,8 @@ then
         done
 
         # SSL Certificates
-        if [ ! -z "$SSL" ] ; then
-            cp $V_HOME/$user/conf/$SSL.* ssl/
+        if [ "$SSL" = 'yes' ] ; then
+            cp $V_HOME/$user/conf/ssl.$domain.* ssl/
         fi
 
         tar -rf $tmpdir/web/$domain/$domain.tar conf ssl
@@ -353,23 +328,6 @@ then
     echo
 fi
 
-# SSL CERTIFICATES
-if [ ! -z "$WEB_SSL" ] && [ "$WEB_SSL" != 'no' ] && [ "$SSL" != '*' ]; then
-    echo "-- SSL --"
-    mkdir $tmpdir/ssl
-
-    # Backingup ssl certificates
-    cert_list=$(ls $V_USERS/$user/ssl/ | grep ".crt" |\
-                sed -e "s/\.crt$//" |\
-                tr '\n' ' ' |\
-                sed -e 's/ $//' )
-    for cert in $cert_list; do
-        echo -e "$(date "+%F %T") $cert"
-        cp $V_USERS/$user/ssl/$cert.* $tmpdir/ssl/
-    done
-    echo
-fi
-
 # Get backup size
 size="$(du -shm $tmpdir | cut -f 1)"
 
@@ -539,7 +497,6 @@ backup_str="$backup_str WEB='${web_list// /,}'"
 backup_str="$backup_str DNS='${dns_list// /,}'"
 backup_str="$backup_str MAIL='${mail_list// /,}'"
 backup_str="$backup_str DB='${db_list// /,}'"
-backup_str="$backup_str SSL='${cert_list// /,}'"
 backup_str="$backup_str CRON='$cron_list'"
 echo "$backup_str" >> $V_USERS/$user/backup.conf
 
diff --git a/bin/v_change_web_domain_ip b/bin/v_change_web_domain_ip
index 8e748152a..091e895b4 100755
--- a/bin/v_change_web_domain_ip
+++ b/bin/v_change_web_domain_ip
@@ -61,7 +61,7 @@ new=$ip
 replace_web_config
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     replace_web_config
@@ -75,7 +75,7 @@ if [ ! -z "$NGINX" ]; then
 fi
 
 # Checking nginx
-if [ ! -z "$SSL" ] && [ ! -z "$NGINX" ]; then 
+if [ "$SSL" = 'yes' ] && [ ! -z "$NGINX" ]; then 
     tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
     conf="$V_HOME/$user/conf/snginx.conf"
     replace_web_config
diff --git a/bin/v_change_web_domain_sslcert b/bin/v_change_web_domain_sslcert
index 1bedc9ce9..1a36e7f7b 100755
--- a/bin/v_change_web_domain_sslcert
+++ b/bin/v_change_web_domain_sslcert
@@ -9,7 +9,7 @@
 user=$1
 domain=$(idn -t --quiet -u "$2" )
 domain_idn=$(idn -t --quiet -a "$domain")
-ssl=$3
+ssl_dir=$3
 
 # Importing variables
 source $VESTA/conf/vars.conf
@@ -54,38 +54,27 @@ is_web_domain_cert_valid
 #                       Action                             #
 #----------------------------------------------------------#
 
-# Parsing domain values
-get_web_domain_values
-tpl_file="$V_WEBTPL/apache_$TPL.stpl"
-conf="$V_HOME/$user/conf/shttpd.conf"
-old_ssl="$SSL"
-SSL="$ssl"
+# Deleting old certificate
+tmpdir=$(mktemp -p $V_HOME/$user/web/$domain/private -d)
+rm -f $V_HOME/$user/conf/ssl.$domain.*
+mv $V_USERS/$user/ssl/$domain.* $tmpdir
+chown -R $user:$user $tmpdir
 
-# Preparing domain values for the template substitution
-upd_web_domain_values
-
-# Recreating vhost
-del_web_config
-add_web_config
-
-# Checking nginx
-if [ ! -z "$NGINX" ]; then
-    proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
-    tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
-    conf="$V_HOME/$user/conf/snginx.conf"
-    del_web_config
-    add_web_config
+# Adding new certificate to user data directory
+cp -f $ssl_dir/$domain.crt $V_USERS/$user/ssl/$domain.crt
+cp -f $ssl_dir/$domain.key $V_USERS/$user/ssl/$domain.key
+cp -f $ssl_dir/$domain.crt $V_USERS/$user/ssl/$domain.pem
+if [ -e "$ssl_dir/$domain.ca" ]; then
+    cp -f $ssl_dir/$domain.ca $V_USERS/$user/ssl/$domain.ca
+    cat $V_USERS/$user/ssl/$domain.ca >> $V_USERS/$user/ssl/$domain.pem
 fi
 
 # Adding new certificate to user dir
-cp -f $V_USERS/$user/ssl/$SSL.crt $ssl_cert
-cp -f $V_USERS/$user/ssl/$SSL.key $ssl_key
-
-# Deleting old certificate
-check_cert=$(grep "SSL='$old_ssl'" $V_USERS/$user/web.conf |wc -l)
-if [ "$check_cert"  -lt 2 ]; then
-    rm -f $V_HOME/$user/conf/$old_ssl.crt
-    rm -f $V_HOME/$user/conf/$old_ssl.key
+cp -f $V_USERS/$user/ssl/$domain.crt $V_HOME/$user/conf/ssl.$domain.crt
+cp -f $V_USERS/$user/ssl/$domain.key $V_HOME/$user/conf/ssl.$domain.key
+cp -f $V_USERS/$user/ssl/$domain.pem $V_HOME/$user/conf/ssl.$domain.pem
+if [ -e "$V_USERS/$user/ssl/$domain.ca" ]; then
+    cp -f $V_USERS/$user/ssl/$domain.ca $V_HOME/$user/conf/ssl.$domain.ca
 fi
 
 
@@ -93,14 +82,11 @@ fi
 #                       Vesta                              #
 #----------------------------------------------------------#
 
-# Adding sslcert in config
-update_web_domain_value '$SSL' "$SSL"
-
 # Adding task to the vesta pipe
 restart_schedule 'web'
 
 # Logging
-log_history "$V_EVENT" "$V_SCRIPT $user $domain $old_ssl"
+log_history "$V_EVENT" "$V_SCRIPT $user $domain $tmpdir"
 log_event 'system' "$V_EVENT"
 
 exit
diff --git a/bin/v_change_web_domain_tpl b/bin/v_change_web_domain_tpl
index ca78f1228..aedf96653 100755
--- a/bin/v_change_web_domain_tpl
+++ b/bin/v_change_web_domain_tpl
@@ -62,7 +62,7 @@ conf="$V_HOME/$user/conf/httpd.conf"
 del_web_config
 
 # Deleting ssl vhost
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
@@ -139,10 +139,15 @@ if [ -x $V_WEBTPL/apache_$template.sh ]; then
 fi
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
-    # Defining variables for ssl template replace
-    ssl_cert="$V_HOME/$user/conf/$SSL.crt"
-    ssl_key="$V_HOME/$user/conf/$SSL.key"
+if [ "$SSL" = 'yes' ]; then
+    # Defining SSL vars
+    ssl_crt="$V_HOME/$user/conf/ssl.$domain.crt"
+    ssl_key="$V_HOME/$user/conf/ssl.$domain.key"
+    ssl_pem="$V_HOME/$user/conf/ssl.$domain.pem"
+    ssl_ca="$V_HOME/$user/conf/ssl.$domain.ca"
+    if [ ! -e "$V_USERS/$user/ssl/$domain.ca" ]; then
+        ssl_ca_str='#'
+    fi
     case $SSL_HOME in
         single) docroot="$V_HOME/$user/web/$domain/public_shtml" ;;
         same)   docroot="$V_HOME/$user/web/$domain/public_html" ;;
diff --git a/bin/v_del_sys_user_ssl b/bin/v_del_sys_user_ssl
deleted file mode 100755
index 4d91deaee..000000000
--- a/bin/v_del_sys_user_ssl
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/bin/bash
-# info: adding ssl certificate
-
-#----------------------------------------------------------#
-#                    Variable&Function                     #
-#----------------------------------------------------------#
-
-# Argument defenition
-user=$1
-ssl=$2
-
-# Importing variables
-source $VESTA/conf/vars.conf
-source $V_CONF/vesta.conf
-source $V_FUNC/shared.func
-source $V_FUNC/ssl.func
-
-
-#----------------------------------------------------------#
-#                    Verifications                         #
-#----------------------------------------------------------#
-
-# Checking arg number
-check_args '2' "$#" 'user certificate'
-
-# Checking argument format
-format_validation 'user' 'certificate'
-
-# Checking user
-is_user_valid
-
-# Checking user is active
-is_user_suspended
-
-# Checking certificate 
-is_cert_used
-
-
-#----------------------------------------------------------#
-#                       Action                             #
-#----------------------------------------------------------#
-
-# Deleting certificate
-rm -f $V_USERS/$user/ssl/$ssl.*
-
-
-#----------------------------------------------------------#
-#                       Vesta                              #
-#----------------------------------------------------------#
-
-# Logging
-log_history "$V_EVENT"
-log_event 'system' "$V_EVENT"
-
-exit
diff --git a/bin/v_del_web_domain b/bin/v_del_web_domain
index d7de93756..e4ab50934 100755
--- a/bin/v_del_web_domain
+++ b/bin/v_del_web_domain
@@ -57,18 +57,14 @@ conf="$V_HOME/$user/conf/httpd.conf"
 del_web_config
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
 
-    # Deleting old certificate
-    check_cert=$(grep "SSL='$SSL'" $V_USERS/$user/web.conf |wc -l)
-    if [ "$check_cert" -lt 2 ]; then
-        rm -f $V_HOME/$user/conf/$SSL.crt
-        rm -f $V_HOME/$user/conf/$SSL.key
-    fi
-
+    # Deleting certificates
+    rm -f $V_HOME/$user/conf/ssl.$domain.*
+    rm -f $V_USERS/$user/ssl/$domain.*
 fi
 
 # Checking nginx
@@ -77,7 +73,7 @@ if [ ! -z "$NGINX" ]; then
     conf="$V_HOME/$user/conf/nginx.conf"
     del_web_config
 
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
         tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
         conf="$V_HOME/$user/conf/snginx.conf"
@@ -117,7 +113,7 @@ rm -rf /var/log/httpd/domains/$domain.error*
 del_web_domain
 
 # Checking last ssl domain
-ssl_dom=$(grep -v "SSL=''" $V_USERS/$user/web.conf | wc -l)
+ssl_dom=$(grep "SSL='yes'" $V_USERS/$user/web.conf | wc -l)
 if [ "$ssl_dom" -eq '0' ]; then
     sed -i "s/ Include /#Include /"  $V_HOME/$user/conf/httpd.conf
 fi
@@ -135,7 +131,7 @@ fi
 # Checking last nginx domain
 conf='/etc/nginx/conf.d/vesta_users.conf'
 last_nginx=$(grep -v "NGINX=''" $V_USERS/$user/web.conf)
-last_snginx=$(echo "$last_nginx" | grep -v "SSL=''")
+last_snginx=$(echo "$last_nginx" | grep "SSL='yes'")
 if [ -z "$last_snginx" ]; then
     sline=$(grep -n "$V_HOME/$user/conf/snginx.conf" $conf | cut -f 1 -d : )
     if [ ! -z "$sline" ]; then
diff --git a/bin/v_del_web_domain_alias b/bin/v_del_web_domain_alias
index 90466c4c9..6766d8f04 100755
--- a/bin/v_del_web_domain_alias
+++ b/bin/v_del_web_domain_alias
@@ -73,7 +73,7 @@ upd_web_domain_values
 del_web_config
 add_web_config
 
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
@@ -87,7 +87,7 @@ if [ ! -z "$NGINX" ]; then
     del_web_config
     add_web_config
 
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
         tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
         conf="$V_HOME/$user/conf/snginx.conf"
diff --git a/bin/v_del_web_domain_cgi b/bin/v_del_web_domain_cgi
index a82396152..7033cb848 100755
--- a/bin/v_del_web_domain_cgi
+++ b/bin/v_del_web_domain_cgi
@@ -63,7 +63,7 @@ del_web_config
 add_web_config
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
diff --git a/bin/v_del_web_domain_elog b/bin/v_del_web_domain_elog
index 2deac53ec..403c828c2 100755
--- a/bin/v_del_web_domain_elog
+++ b/bin/v_del_web_domain_elog
@@ -64,7 +64,7 @@ del_web_config
 add_web_config
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
@@ -78,7 +78,7 @@ if [ ! -z "$NGINX" ]; then
     del_web_config
     add_web_config
 
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
         tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
         conf="$V_HOME/$user/conf/snginx.conf"
diff --git a/bin/v_del_web_domain_nginx b/bin/v_del_web_domain_nginx
index 29ebb439c..bcb1c6586 100755
--- a/bin/v_del_web_domain_nginx
+++ b/bin/v_del_web_domain_nginx
@@ -57,7 +57,7 @@ conf="$V_HOME/$user/conf/nginx.conf"
 del_web_config
 
 # Checking ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
     conf="$V_HOME/$user/conf/snginx.conf"
     del_web_config
@@ -75,7 +75,7 @@ update_web_domain_value '$NGINX_EXT' ''
 # Checking last nginx domain
 conf='/etc/nginx/conf.d/vesta_users.conf'
 last_nginx=$(grep -v "NGINX=''" $V_USERS/$user/web.conf)
-last_snginx=$(echo "$last_nginx" | grep -v "SSL=''")
+last_snginx=$(echo "$last_nginx" | grep "SSL='yes'")
 if [ -z "$last_snginx" ]; then
     sline=$(grep -n "$V_HOME/$user/conf/snginx.conf" $conf | cut -f 1 -d : )
     if [ ! -z "$sline" ]; then
diff --git a/bin/v_del_web_domain_ssl b/bin/v_del_web_domain_ssl
index fe8fb9cb2..b9b1140c5 100755
--- a/bin/v_del_web_domain_ssl
+++ b/bin/v_del_web_domain_ssl
@@ -54,7 +54,6 @@ is_web_domain_value_exist '$SSL'
 get_web_domain_values
 conf="$V_HOME/$user/conf/shttpd.conf"
 tpl_file="$V_WEBTPL/apache_$TPL.stpl"
-old_ssl="$SSL"
 
 # Deleting domain
 del_web_config
@@ -67,11 +66,10 @@ if [ ! -z "$NGINX" ]; then
 fi
 
 # Deleting old certificate
-check_cert=$(grep "SSL='$old_ssl'" $V_USERS/$user/web.conf |wc -l)
-if [ "$check_cert"  -lt 2 ]; then
-    rm -f $V_HOME/$user/conf/$old_ssl.crt
-    rm -f $V_HOME/$user/conf/$old_ssl.key
-fi
+tmpdir=$(mktemp -p $V_HOME/$user/web/$domain/private -d)
+rm -f $V_HOME/$user/conf/ssl.$domain.*
+mv $V_USERS/$user/ssl/$domain.* $tmpdir
+chown -R $user:$user $tmpdir
 
 
 #----------------------------------------------------------#
@@ -79,11 +77,10 @@ fi
 #----------------------------------------------------------#
 
 # Deleting ssl in config
-update_web_domain_value '$SSL' ''
-update_web_domain_value '$SSL_HOME' ''
+update_web_domain_value '$SSL' 'no'
 
 # Checking last ssl domain
-ssl_dom=$(grep -v "SSL=''" $V_USERS/$user/web.conf)
+ssl_dom=$(grep "SSL='yes'" $V_USERS/$user/web.conf)
 main_conf='/etc/httpd/conf.d/vesta.conf'
 conf="$V_HOME/$user/conf/shttpd.conf"
 if [ -z "$ssl_dom" ]; then
@@ -94,7 +91,7 @@ fi
 # Checking last nginx domain
 conf='/etc/nginx/conf.d/vesta_users.conf'
 last_nginx=$(grep -v "NGINX=''" $V_USERS/$user/web.conf)
-last_snginx=$(echo "$last_nginx" | grep -v "SSL=''")
+last_snginx=$(echo "$last_nginx" | grep "SSL='yes'")
 if [ -z "$last_snginx" ]; then
     sline=$(grep -n "$V_HOME/$user/conf/snginx.conf" $conf | cut -f 1 -d : )
     if [ ! -z "$sline" ]; then
@@ -110,7 +107,7 @@ decrease_user_value "$user" '$U_WEB_SSL'
 restart_schedule 'web'
 
 # Logging
-log_history "$V_EVENT" "v_add_web_domain_ssl $user $domain $SSL $SSL_HOME"
+log_history "$V_EVENT" "v_add_web_domain_ssl $user $domain $tmpdir $SSL_HOME"
 log_event 'system' "$V_EVENT"
 
 exit
diff --git a/bin/v_list_sys_user_backups b/bin/v_list_sys_user_backups
index 857526e36..2d5c091d4 100755
--- a/bin/v_list_sys_user_backups
+++ b/bin/v_list_sys_user_backups
@@ -39,7 +39,7 @@ fi
 
 # Defining fileds to select
 fields="\$DATE \$TIME \$RUNTIME \$TYPE \$SIZE \$VESTA \$PAM \$WEB \$DNS \$DB"
-fields="$fields \$MAIL \$SSL \$CRON"
+fields="$fields \$MAIL \$CRON"
 
 # Listing domains
 case $format in 
diff --git a/bin/v_list_sys_user_ssl b/bin/v_list_sys_user_ssl
deleted file mode 100755
index 16d1e7fad..000000000
--- a/bin/v_list_sys_user_ssl
+++ /dev/null
@@ -1,86 +0,0 @@
-#!/bin/bash
-# info: listing ssl certificates
-
-#----------------------------------------------------------#
-#                    Variable&Function                     #
-#----------------------------------------------------------#
-
-# Argument defenition
-user=$1
-format=${2-shell}
-
-# Importing variables
-source $VESTA/conf/vars.conf
-source $V_FUNC/shared.func
-
-# Json function
-json_list_cert() {
-    # Print top bracket
-    echo '['
-
-    # Checking certificates number
-    certificates=$(ls $V_USERS/$user/ssl/ |grep '.crt' )
-    certificates_count=$(echo "$certificates" | wc -l)
-    i=1
-
-    # Listing files by mask
-    for cert in $certificates; do
-        if [ $i -eq $certificates_count ]; then
-             echo -e "\t\"${cert//.crt/}\""
-        else
-             echo -e "\t\"${cert//.crt/}\","
-        fi
-        (( ++i))
-    done
-
-    # Printing bottom bracket
-    echo -e "]"
-}
-
-# Shell function
-shell_list_cert() {
-    if [ -z "$nohead" ] ; then
-        # Print brief info
-        echo "Certificate"
-        echo "----------"
-    fi
-
-    # Listing files by mask
-    for cert in $(ls $V_USERS/$user/ssl/ | grep '.crt'); do
-        # Print result
-        echo "${cert//.crt/}"
-    done
-}
-
-
-#----------------------------------------------------------#
-#                    Verifications                         #
-#----------------------------------------------------------#
-
-# Checking args
-check_args '1' "$#" 'user [format] [limit] [offset]'
-
-# Checking argument format
-format_validation 'user'
-
-# Checking user
-is_user_valid
-
-#----------------------------------------------------------#
-#                       Action                             #
-#----------------------------------------------------------#
-
-# Listing domains
-case $format in 
-    json)   json_list_cert  ;;
-    plain)  nohead=1; shell_list_cert ;;
-    shell)  shell_list_cert | column -t ;;
-    *)      check_args '1' '0' 'user [format]' ;;
-esac
-
-
-#----------------------------------------------------------#
-#                       Vesta                              #
-#----------------------------------------------------------#
-
-exit
diff --git a/bin/v_list_web_domain b/bin/v_list_web_domain
index 9f1e581dc..e749a27ea 100755
--- a/bin/v_list_web_domain
+++ b/bin/v_list_web_domain
@@ -102,7 +102,7 @@ fields='$DOMAIN $IP $U_DISK $U_BANDWIDTH $TPL $ALIAS $PHP $CGI $ELOG $STATS
 case $format in 
     json)   json_list_domain ;;
     plain)  nohead=1; shell_list_domain ;;
-    shell)  shell_list_domain | column -t ;;
+    shell)  shell_list_domain |column -t ;;
     *)      check_args '2' '0' 'user domain [format]'
 esac
 
diff --git a/bin/v_rebuild_web_domains b/bin/v_rebuild_web_domains
index 32ecd718b..e5a893b3f 100755
--- a/bin/v_rebuild_web_domains
+++ b/bin/v_rebuild_web_domains
@@ -70,7 +70,7 @@ for domain in $(shell_list) ; do
     fi
 
     # Checking ssl
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         # Adding domain to the shttpd.conf
         conf="$V_HOME/$user/conf/tmp_shttpd.conf"
         tpl_file="$V_WEBTPL/apache_$TPL.stpl"
@@ -90,7 +90,7 @@ for domain in $(shell_list) ; do
         conf="$V_HOME/$user/conf/tmp_nginx.conf"
         add_web_config
 
-        if [ ! -z "$SSL" ]; then
+        if [ "$SSL" = 'yes' ]; then
             if [ "$SUSPEND" = 'yes' ]; then
                 proxy_string="rewrite ^(.*)\$ http://$url;"
             else
diff --git a/bin/v_suspend_web_domain b/bin/v_suspend_web_domain
index 552d8d01c..48d808591 100755
--- a/bin/v_suspend_web_domain
+++ b/bin/v_suspend_web_domain
@@ -61,7 +61,7 @@ del_web_config
 add_web_config
 
 # Check ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
@@ -75,7 +75,7 @@ if [ ! -z "$NGINX" ]; then
     del_web_config
     add_web_config
 
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         proxy_string="rewrite ^(.*)\$ http://$url;"
         tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
         conf="$V_HOME/$user/conf/snginx.conf"
diff --git a/bin/v_unsuspend_web_domain b/bin/v_unsuspend_web_domain
index d6223d045..06f6d3451 100755
--- a/bin/v_unsuspend_web_domain
+++ b/bin/v_unsuspend_web_domain
@@ -58,7 +58,7 @@ del_web_config
 add_web_config
 
 # Check ssl
-if [ ! -z "$SSL" ]; then
+if [ "$SSL" = 'yes' ]; then
     tpl_file="$V_WEBTPL/apache_$TPL.stpl"
     conf="$V_HOME/$user/conf/shttpd.conf"
     del_web_config
@@ -72,7 +72,7 @@ if [ ! -z "$NGINX" ]; then
     del_web_config
     add_web_config
 
-    if [ ! -z "$SSL" ]; then
+    if [ "$SSL" = 'yes' ]; then
         proxy_string="proxy_pass     https://$ip:$WEB_SSL_PORT;"
         tpl_file="$V_WEBTPL/ngingx_vhost_$NGINX.stpl"
         conf="$V_HOME/$user/conf/snginx.conf"
diff --git a/bin/v_upd_sys_user_backups b/bin/v_upd_sys_user_backups
index 0147702e3..0d70fe1dd 100755
--- a/bin/v_upd_sys_user_backups
+++ b/bin/v_upd_sys_user_backups
@@ -213,7 +213,7 @@ if [ -e "$tmp_file" ]; then
 fi
 
 # Checking local
-if [ "$type" == 'local' ]; then
+if [ "$type" = 'local' ]; then
     backups=$(ls $V_BACKUP |grep "^$user."|sort)
     for backup in $backups; do
         get_backup_info $V_BACKUP/$backup $type >> $tmp_file
@@ -221,7 +221,7 @@ if [ "$type" == 'local' ]; then
 fi
 
 # Checking ftp
-if [ "$type" == 'ftp' ]; then
+if [ "$type" = 'ftp' ]; then
     tmpdir=$(mktemp -p $V_BACKUP -d)
     ftmpdir=$(basename $tmpdir)
     init_ftp_variables
@@ -242,7 +242,7 @@ if [ "$type" == 'ftp' ]; then
 fi
 
 # Checking both local and ftp
-if [ "$type" == 'ftp,local' ] || [ "$type" == 'local,ftp' ]; then
+if [ "$type" = 'ftp,local' ] || [ "$type" = 'local,ftp' ]; then
 
     tmpdir=$(mktemp -p $V_BACKUP -d)
     ftmpdir=$(basename $tmpdir)
diff --git a/data/templates/apache_default.stpl b/data/templates/apache_default.stpl
index a0cc86d11..02916c791 100644
--- a/data/templates/apache_default.stpl
+++ b/data/templates/apache_default.stpl
@@ -31,8 +31,9 @@
     php_admin_value open_basedir %home%/%user%/web:%home%/%user%/tmp:/bin:/usr/bin:/usr/local/bin:/var/www/html:/tmp
     SSLEngine on
     SSLVerifyClient none
-    SSLCertificateFile %ssl_cert%
+    SSLCertificateFile %ssl_crt%
     SSLCertificateKeyFile %ssl_key%
+    %ssl_ca_str%SSLCertificateChainFile %ssl_ca%
     <IfModule mod_ruid2.c>
         RMode config
         RUidGid %user% %group%
diff --git a/data/templates/apache_phpcgi.stpl b/data/templates/apache_phpcgi.stpl
index 177da5b4e..9664b0408 100644
--- a/data/templates/apache_phpcgi.stpl
+++ b/data/templates/apache_phpcgi.stpl
@@ -25,8 +25,9 @@
     php_admin_value open_basedir %home%/%user%/web:%home%/%user%/tmp:/bin:/usr/bin:/usr/local/bin:/var/www/html:/tmp
     SSLEngine on
     SSLVerifyClient none
-    SSLCertificateFile %ssl_cert%
+    SSLCertificateFile %ssl_crt%
     SSLCertificateKeyFile %ssl_key%
+    %ssl_ca_str%SSLCertificateChainFile %ssl_ca%
 
     Include %home%/%user%/conf/shttpd.%domain%.conf*
 
diff --git a/data/templates/apache_phpfcgid.stpl b/data/templates/apache_phpfcgid.stpl
index ab51e6a25..6fe5b6e9b 100644
--- a/data/templates/apache_phpfcgid.stpl
+++ b/data/templates/apache_phpfcgid.stpl
@@ -25,8 +25,9 @@
     php_admin_value open_basedir %home%/%user%/web:%home%/%user%/tmp:/bin:/usr/bin:/usr/local/bin:/var/www/html:/tmp
     SSLEngine on
     SSLVerifyClient none
-    SSLCertificateFile %ssl_cert%
+    SSLCertificateFile %ssl_crt%
     SSLCertificateKeyFile %ssl_key%
+    %ssl_ca_str%SSLCertificateChainFile %ssl_ca%
 
     Include %home%/%user%/conf/shttpd.%domain%.conf*
 
diff --git a/data/templates/apache_unlim.stpl b/data/templates/apache_unlim.stpl
index 322420eff..7df4a2ed9 100644
--- a/data/templates/apache_unlim.stpl
+++ b/data/templates/apache_unlim.stpl
@@ -31,8 +31,9 @@
     php_admin_value open_basedir none
     SSLEngine on
     SSLVerifyClient none
-    SSLCertificateFile %ssl_cert%
+    SSLCertificateFile %ssl_crt%
     SSLCertificateKeyFile %ssl_key%
+    %ssl_ca_str%SSLCertificateChainFile %ssl_ca%
 
     <IfModule mod_ruid2.c>
         RMode config
diff --git a/data/templates/ngingx_vhost_default.stpl b/data/templates/ngingx_vhost_default.stpl
index 342476c45..227470407 100644
--- a/data/templates/ngingx_vhost_default.stpl
+++ b/data/templates/ngingx_vhost_default.stpl
@@ -3,7 +3,7 @@ server {
     server_name %domain_idn% %alias_idn%;
     server_name_in_redirect off;
     ssl         on;
-    ssl_certificate      %ssl_cert%;
+    ssl_certificate      %ssl_pem%;
     ssl_certificate_key  %ssl_key%;
     %elog%error_log  /var/log/httpd/domains/%domain%.error.log error;
 
diff --git a/func/domain.func b/func/domain.func
index 5a54fb8c2..afd3209a0 100644
--- a/func/domain.func
+++ b/func/domain.func
@@ -239,8 +239,10 @@ add_web_config() {
             -e "s/%alias_string%/$alias_string/g" \
             -e "s/%alias_idn%/${aliases_idn//,/ }/g" \
             -e "s/%alias%/${aliases//,/ }/g" \
-            -e "s/%ssl_cert%/${ssl_cert////\/}/g" \
+            -e "s/%ssl_crt%/${ssl_crt////\/}/g" \
             -e "s/%ssl_key%/${ssl_key////\/}/g" \
+            -e "s/%ssl_pem%/${ssl_pem////\/}/g" \
+            -e "s/%ssl_ca_str%/${ssl_ca_str////\/}/g" \
             -e "s/%nginx_extentions%/${NGINX_EXT//,/|}/g" \
             -e "s/%elog%/$elog/g" \
             -e "s/%cgi%/$cgi/g" \
@@ -448,13 +450,53 @@ is_web_domain_key_empty() {
 }
 
 is_web_domain_cert_valid() {
+
     # Checking file existance
-    path="$V_USERS/$user/ssl"
-    if [ ! -e "$path/$ssl.crt" ] || [ ! -e "$path/$ssl.key" ]; then
+    if [ ! -e "$ssl_dir/$domain.crt" ] || [ ! -e "$ssl_dir/$domain.key" ]; then
         echo "Error: certificate not exist"
         log_event 'debug' "$E_CERT_NOTEXIST $V_EVENT"
         exit $E_CERT_NOTEXIST
     fi
+
+    # Checking certificate
+    crt=$(openssl verify $ssl_dir/$domain.crt 2>/dev/null |grep '/C=')
+    if [ -z "$crt" ]; then
+        echo "Error: certificate invalid"
+        log_event 'debug' "$E_CERT_INVALID $V_EVENT"
+        exit $E_CERT_INVALID
+    fi
+
+    # Checking certificate key
+    openssl rsa -in "$ssl_dir/$domain.key" -check >/dev/null 2>/dev/null
+    if [ "$?" -ne 0 ]; then
+        echo "Error: key invalid"
+        log_event 'debug' "$E_KEY_INVALID $V_EVENT"
+        exit $E_KEY_INVALID
+    fi
+
+    # Checking certificate authority
+    if [ -e "$ssl_dir/$domain.ca" ]; then
+        ca=$(openssl verify $ssl_dir/$domain.ca 2>/dev/null |grep '/C=')
+        if [ -z "$ca" ]; then
+            echo "Error: certificate invalid"
+            log_event 'debug' "$E_CERT_INVALID $V_EVENT"
+            exit $E_CERT_INVALID
+        fi
+    fi
+
+    # Checking server
+    openssl s_server -quiet \
+        -cert $ssl_dir/$domain.crt -key $ssl_dir/$domain.key &
+    pid=$!
+    sleep 1
+    disown > /dev/null 2>&1
+    kill $pid > /dev/null 2>&1
+    result=$?
+    if [ "$result" -ne '0' ]; then
+        echo "Error: certificate key pair invalid"
+        log_event 'debug' "$E_CERTKEY_INVALID $V_EVENT"
+        exit $E_CERTKEY_INVALID
+    fi
 }
 
 
@@ -733,8 +775,14 @@ upd_web_domain_values() {
     fi
 
     # Defining SSL vars
-    ssl_cert="$V_HOME/$user/conf/$SSL.crt"
-    ssl_key="$V_HOME/$user/conf/$SSL.key"
+    ssl_crt="$V_HOME/$user/conf/ssl.$domain.crt"
+    ssl_key="$V_HOME/$user/conf/ssl.$domain.key"
+    ssl_pem="$V_HOME/$user/conf/ssl.$domain.pem"
+    ssl_ca="$V_HOME/$user/conf/ssl.$domain.ca"
+    if [ ! -e "$V_USERS/$user/ssl/$domain.ca" ]; then
+        ssl_ca_str='#'
+    fi
+
     case $SSL_HOME in
         single) docroot="$V_HOME/$user/web/$domain/public_shtml" ;;
         same) docroot="$V_HOME/$user/web/$domain/public_html" ;;
diff --git a/func/ssl.func b/func/ssl.func
deleted file mode 100644
index 2ec06a90e..000000000
--- a/func/ssl.func
+++ /dev/null
@@ -1,76 +0,0 @@
-is_cert_free() {
-    # Defining path
-    user_cert="$V_USERS/$user/ssl/$cert"
-
-    # Checking file existance
-    if [ -e "$user_cert.crt" ] || [ -e "$user_cert.key" ]; then
-        echo "Error: certificate exist"
-        log_event 'debug' "$E_CERT_EXIST $V_EVENT"
-        exit $E_CERT_EXIST
-    fi
-}
-
-is_cert_valid() {
-    path="$1"
-
-    # Checking file existance
-    if [ ! -e "$path/$ssl.crt" ] || [ ! -e "$path/$ssl.key" ]; then
-        echo "Error: certificate not exist"
-        log_event 'debug' "$E_CERT_NOTEXIST $V_EVENT"
-        exit $E_CERT_NOTEXIST
-    fi
-
-    # Checking crt file
-    crt=$(openssl verify "$path/$ssl.crt" 2>/dev/null|tail -n 1|grep -w 'OK')
-    if [ -z "$crt" ]; then
-        echo "Error: certificate invalid"
-        log_event 'debug' "$E_CERT_INVALID $V_EVENT"
-        exit $E_CERT_INVALID
-    fi
-
-    # Checking key file
-    key=$(openssl rsa -in "$path/$ssl.key" -check 2>/dev/null|\
-        head -n1|grep -w 'ok')
-    if [ -z "$key" ]; then
-        echo "Error: key invalid"
-        log_event 'debug' "$E_KEY_INVALID $V_EVENT"
-        exit $E_KEY_INVALID
-    fi
-
-    # FIXME we should run server on free port
-    # Checking server
-    cmd="openssl s_server -quiet -cert $path/$ssl.crt -key $path/$ssl.key"
-    $cmd &
-
-    # Defining pid
-    pid=$!
-
-    # Sleep 1 second
-    sleep 1
-
-    # Disown background process
-    disown > /dev/null 2>&1
-
-    # Killing ssl server
-    kill $pid > /dev/null 2>&1
-
-    # Checking result
-    result=$?
-    if [ "$result" -ne '0' ]; then
-        echo "Error: certificate key pair invalid"
-        log_event 'debug' "$E_CERTKEY_INVALID $V_EVENT"
-        exit $E_CERTKEY_INVALID
-    fi
-}
-
-is_cert_used() {
-    # Parsing config
-    check_cert=$(grep "SSL='$ssl'" $V_USERS/$user/*.conf)
-
-    # Checking result
-    if [ ! -z "$check_cert" ]; then
-        echo "Error: certificate used"
-        log_event 'debug' "$E_CERT_USED $V_EVENT"
-        exit $E_CERT_USED
-    fi
-}