diff --git a/bin/v-add-letsencrypt-domain b/bin/v-add-letsencrypt-domain
new file mode 100755
index 00000000..368511f9
--- /dev/null
+++ b/bin/v-add-letsencrypt-domain
@@ -0,0 +1,97 @@
+#!/bin/bash
+# info: adding letsencrypt ssl cetificate for domain
+# options: USER DOMAIN [ALIASES] [RESTART]
+#
+# The function turns on SSL support for a domain. Parameter ssl_dir is a path
+# to directory where 2 or 3 ssl files can be found. Certificate file 
+# domain.tld.crt and its key domain.tld.key  are mandatory. Certificate
+# authority domain.tld.ca file is optional. If home directory  parameter
+# (ssl_home) is not set, https domain uses public_shtml as separate
+# documentroot directory.
+
+
+#----------------------------------------------------------#
+#                    Variable&Function                     #
+#----------------------------------------------------------#
+
+# Argument definition
+user=$1
+domain=$2
+aliases=$3
+restart=$4
+
+# Includes
+source $VESTA/func/main.sh
+source $VESTA/func/domain.sh
+source $VESTA/conf/vesta.conf
+
+
+#----------------------------------------------------------#
+#                    Verifications                         #
+#----------------------------------------------------------#
+
+check_args '2' "$#" 'USER DOMAIN [RESTART]'
+is_format_valid 'user' 'domain'
+is_system_enabled "$WEB_SYSTEM" 'WEB_SYSTEM'
+is_system_enabled "$WEB_SSL" 'SSL_SUPPORT'
+is_object_valid 'user' 'USER' "$user"
+is_object_unsuspended 'user' 'USER' "$user"
+is_object_valid 'web' 'DOMAIN' "$domain"
+is_object_unsuspended 'web' 'DOMAIN' "$domain"
+
+
+#----------------------------------------------------------#
+#                       Action                             #
+#----------------------------------------------------------#
+
+# Registering LetsEncrypt user account
+$BIN/v-add-letsencrypt-user $user
+check_result $? "LE account registration" >/dev/null
+source $USER_DATA/ssl/le.conf
+email=$EMAIL
+
+# Validating domain and aliases
+i=1
+for alias in $(echo $domain,$aliases |tr ',' '\n' |sort -u); do
+    $BIN/v-check-letsencrypt-domain $user $alias
+    check_result $? "LE domain validation" >/dev/null
+    if [ "$i" -gt 6 ]; then
+        check_result $E_LIMIT "LE can't sign more than 6 domains"
+    fi
+    i=$((i++))
+done
+
+# Generating CSR
+ssl_dir=$($BIN/v-generate-ssl-cert "$domain" "$email" "US" "California" \
+    "San Francisco" "Vesta" "IT" "$aliases" |tail -n1 |awk '{print $2}')
+
+# Signing CSR
+crt=$($BIN/v-sign-letsencrypt-csr $user $domain $ssl_dir)
+check_result $? "$crt"
+echo "$crt" > $ssl_dir/$domain.crt
+
+# Dowloading CA certificate
+le_certs='https://letsencrypt.org/certs'
+x1='lets-encrypt-x1-cross-signed.pem.txt'
+x3='lets-encrypt-x3-cross-signed.pem.txt'
+issuer=$(openssl x509 -text -in $ssl_dir/$domain.crt |grep "Issuer:")
+if [ -z "$(echo $issuer|grep X3)" ]; then
+    curl -s $le_certs/$x1 > $ssl_dir/$domain.ca
+else
+    curl -s $le_certs/$x3 > $ssl_dir/$domain.ca
+fi
+
+# Adding SSL
+$BIN/v-delete-web-domain-ssl $user $domain >/dev/null 2>&1
+$BIN/v-add-web-domain-ssl $user $domain $ssl_dir
+check_result $? "SSL install" >/dev/null
+
+
+#----------------------------------------------------------#
+#                       Vesta                              #
+#----------------------------------------------------------#
+
+# Logging
+log_event "$OK" "$ARGUMENTS"
+
+exit
diff --git a/bin/v-add-letsencrypt-user b/bin/v-add-letsencrypt-user
new file mode 100755
index 00000000..431c2543
--- /dev/null
+++ b/bin/v-add-letsencrypt-user
@@ -0,0 +1,111 @@
+#!/bin/bash
+# info: register letsencrypt user account
+# options: USER [EMAIL]
+#
+# The function creates and register LetsEncript account key
+
+
+#----------------------------------------------------------#
+#                    Variable&Function                     #
+#----------------------------------------------------------#
+
+# Argument definition
+user=$1
+email=$2
+key_size=2048
+
+# Includes
+source $VESTA/func/main.sh
+source $VESTA/conf/vesta.conf
+
+# encode base64
+encode_base64() {
+    cat |base64 |tr '+/' '-_' |tr -d '\r\n='
+}
+
+
+#----------------------------------------------------------#
+#                    Verifications                         #
+#----------------------------------------------------------#
+
+check_args '1' "$#" 'USER [EMAIL]'
+is_format_valid 'user'
+is_object_valid 'user' 'USER' "$user"
+if [ -e "$USER_DATA/ssl/le.conf" ]; then
+    exit
+fi
+
+
+#----------------------------------------------------------#
+#                       Action                             #
+#----------------------------------------------------------#
+
+api='https://acme-v01.api.letsencrypt.org'
+agreement='https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf'
+if [ -z "$email" ]; then
+    email=$(get_user_value '$CONTACT')
+fi
+
+# Generating key
+key="$USER_DATA/ssl/user.key"
+if [ ! -e "$key" ]; then
+    openssl genrsa -out $key $key_size >/dev/null 2>&1
+    chmod 600 $key
+fi
+
+# Defining key exponent
+exponent=$(openssl pkey -inform perm -in "$key" -noout -text_pub |\
+    grep Exponent: |cut -f 2 -d '(' |cut -f 1 -d ')' |sed -e 's/x//' |\
+    xxd -r -p |encode_base64)
+
+# Defining key modulus
+modulus=$(openssl rsa -in "$key" -modulus -noout |\
+    sed -e 's/^Modulus=//' |xxd -r -p |encode_base64)
+
+# Defining key thumb
+thumb='{"e":"'$exponent'","kty":"RSA","n":"'"$modulus"'"}'
+thumb="$(echo -n "$thumb" |openssl dgst -sha256 -binary |encode_base64)"
+
+# Defining JWK header
+header='{"e":"'$exponent'","kty":"RSA","n":"'"$modulus"'"}'
+header='{"alg":"RS256","jwk":'"$header"'}'
+
+# Requesting nonce
+nonce=$(curl -s -I "$api/directory" |grep Nonce |cut -f 2 -d \ |tr -d '\r\n')
+protected=$(echo -n '{"nonce":"'"$nonce"'"}' |encode_base64)
+
+# Defining registration query
+query='{"resource":"new-reg","contact":["mailto:'"$email"'"],'
+query=$query'"agreement":"'$agreement'"}'
+payload=$(echo -n "$query" |encode_base64)
+signature=$(printf "%s" "$protected.$payload" |\
+    openssl dgst -sha256 -binary -sign "$key" |encode_base64)
+data='{"header":'"$header"',"protected":"'"$protected"'",'
+data=$data'"payload":"'"$payload"'","signature":"'"$signature"'"}'
+
+# Sending request to LetsEncrypt API
+answer=$(curl -s -i -d "$data" "$api/acme/new-reg")
+status=$(echo "$answer" |grep HTTP/1.1 |tail -n1 |cut -f2 -d ' ')
+
+# Checking http answer status
+if [[ "$status" -ne "201" ]] && [[ "$status" -ne "409" ]]; then
+    check_result $E_CONNECT "LetsEncrypt account registration $status"
+fi
+
+
+#----------------------------------------------------------#
+#                       Vesta                              #
+#----------------------------------------------------------#
+
+# Adding le.conf
+echo "EMAIL='$email'" > $USER_DATA/ssl/le.conf
+echo "EXPONENT='$exponent'" >> $USER_DATA/ssl/le.conf
+echo "MODULUS='$modulus'" >> $USER_DATA/ssl/le.conf
+echo "THUMB='$thumb'" >> $USER_DATA/ssl/le.conf
+chmod 660  $USER_DATA/ssl/le.conf
+
+
+# Logging
+log_event "$OK" "$ARGUMENTS"
+
+exit
diff --git a/bin/v-check-letsencrypt-domain b/bin/v-check-letsencrypt-domain
new file mode 100755
index 00000000..c38aea4a
--- /dev/null
+++ b/bin/v-check-letsencrypt-domain
@@ -0,0 +1,145 @@
+#!/bin/bash
+# info: check letsencrypt domain
+# options: USER DOMAIN
+#
+# The function check and validates domain with LetsEncript
+
+
+#----------------------------------------------------------#
+#                    Variable&Function                     #
+#----------------------------------------------------------#
+
+# Argument definition
+user=$1
+domain=$(idn -t --quiet -u "$2" )
+domain=$(echo $domain | tr '[:upper:]' '[:lower:]')
+
+# Includes
+source $VESTA/func/main.sh
+source $VESTA/conf/vesta.conf
+
+# encode base64
+encode_base64() {
+    cat |base64 |tr '+/' '-_' |tr -d '\r\n='
+}
+
+
+#----------------------------------------------------------#
+#                    Verifications                         #
+#----------------------------------------------------------#
+
+check_args '2' "$#" 'USER DOMAIN'
+is_format_valid 'user' 'domain'
+is_system_enabled "$WEB_SYSTEM" 'WEB_SYSTEM'
+is_object_valid 'user' 'USER' "$user"
+is_object_unsuspended 'user' 'USER' "$user"
+if [ ! -e "$USER_DATA/ssl/le.conf" ]; then
+    check_result $E_NOTEXIST "LetsEncrypt key doesn't exist"
+fi
+check_domain=$(grep -w "$domain'" $USER_DATA/web.conf)
+if [ -z "$check_domain" ]; then
+    check_result $E_NOTEXIST "domain $domain doesn't exist"
+fi
+
+
+#----------------------------------------------------------#
+#                       Action                             #
+#----------------------------------------------------------#
+
+source $USER_DATA/ssl/le.conf
+api='https://acme-v01.api.letsencrypt.org'
+r_domain=$(echo "$check_domain" |cut -f 2 -d \')
+key="$USER_DATA/ssl/user.key"
+exponent="$EXPONENT"
+modulus="$MODULUS"
+thumb="$THUMB"
+
+# Defining JWK header
+header='{"e":"'$exponent'","kty":"RSA","n":"'"$modulus"'"}'
+header='{"alg":"RS256","jwk":'"$header"'}'
+
+# Requesting nonce
+nonce=$(curl -s -I "$api/directory" |grep Nonce |cut -f2 -d \ |tr -d '\r\n')
+protected=$(echo -n '{"nonce":"'"$nonce"'"}' |encode_base64)
+
+# Defining ACME query (request challenge)
+query='{"resource":"new-authz","identifier"'
+query=$query':{"type":"dns","value":"'"$domain"'"}}'
+payload=$(echo -n "$query" |encode_base64)
+signature=$(printf "%s" "$protected.$payload" |\
+    openssl dgst -sha256 -binary -sign "$key" |encode_base64)
+data='{"header":'"$header"',"protected":"'"$protected"'",'
+data=$data'"payload":"'"$payload"'","signature":"'"$signature"'"}'
+
+# Sending request to LetsEncrypt API
+answer=$(curl -s -i -d "$data" "$api/acme/new-authz")
+
+# Checking http answer status
+status=$(echo "$answer" |grep HTTP/1.1 |tail -n1 |cut -f2 -d ' ')
+if [[ "$status" -ne "201" ]]; then
+    check_result $E_CONNECT "LetsEncrypt challenge request $status"
+fi
+
+# Parsing domain nonce,token and uri
+nonce=$(echo "$answer" |grep Nonce |cut -f2 -d \ |tr -d '\r\n')
+protected=$(echo -n '{"nonce":"'"$nonce"'"}' |encode_base64)
+token=$(echo "$answer" |tr ',' '\n' |grep -A 3 http-01 |grep token)
+token=$(echo "$token" |cut -f 4 -d \")
+uri=$(echo "$answer" |tr ',' '\n' |grep -A 3 http-01 |grep uri)
+uri=$(echo "$uri" |cut -f 4 -d \")
+
+# Adding location wrapper for request challenge
+if [ "$WEB_SYSTEM" = 'nginx' ] || [ "$PROXY_SYSTEM" = 'nginx' ]; then
+    conf="$HOMEDIR/$user/conf/web/nginx.$r_domain.conf_letsencrypt"
+    if [ ! -e "$conf" ]; then
+        echo 'location ~ "^/\.well-known/acme-challenge/(.*)$" {' > $conf
+        echo '    default_type text/plain;' >> $conf
+        echo '    return 200 "$1.'$thumb'";' >> $conf
+        echo '}' >> $conf
+        if [ ! -z "$PROXY_SYSTEM" ]; then
+            $BIN/v-restart-proxy
+            check_result $? "Proxy restart failed" >/dev/null
+        else
+            $BIN/v-restart-web
+            check_result $? "Web restart failed" >/dev/null
+        fi
+    fi
+else
+    acme="$HOMEDIR/$user/web/$r_domain/public_html/.well-known/acme-challenge"
+    echo "$token" > $acme/$token.$thumb
+    chown -R $user:$user $HOMEDIR/$user/web/$r_domain/public_html/.well-known
+fi
+
+# Defining ACME query (request validation)
+query='{"resource":"challenge","type":"http-01","keyAuthorization"'
+query=$query':"'$token.$thumb'","token":"'$token'"}'
+payload=$(echo -n "$query" |encode_base64)
+signature=$(printf "%s" "$protected.$payload" |\
+    openssl dgst -sha256 -binary -sign "$key" |encode_base64)
+data='{"header":'"$header"',"protected":"'"$protected"'",'
+data=$data'"payload":"'"$payload"'","signature":"'"$signature"'"}'
+
+# Sending request to LetsEncrypt API
+answer=$(curl -s -i -d "$data" "$uri")
+
+# Checking domain validation status
+status=$(echo $answer |tr ',' '\n' |grep status |cut -f 4 -d \")
+location=$(echo "$answer" |grep Location: |awk '{print $2}' |tr -d '\r\n')
+while [ "$status" = 'pending' ] ; do
+    answer=$(curl -s -i "$location")
+    status=$(echo "$answer" |tr ',' '\n' |grep status |cut -f 4 -d \")
+done
+if [ "$status" = 'invalid' ]; then
+    detail="$(echo $answer |tr ',' '\n' |grep detail |cut -f 4 -d \")"
+    check_result $E_CONNECT "$detail"
+fi
+
+
+#----------------------------------------------------------#
+#                       Vesta                              #
+#----------------------------------------------------------#
+
+# Logging
+log_event "$OK" "$ARGUMENTS"
+
+exit
diff --git a/bin/v-generate-ssl-cert b/bin/v-generate-ssl-cert
index e96edaa5..4ae89582 100755
--- a/bin/v-generate-ssl-cert
+++ b/bin/v-generate-ssl-cert
@@ -1,6 +1,6 @@
 #!/bin/bash
 # info: generate self signed certificate and CSR request
-# options: DOMAIN EMAIL COUNTRY STATE CITY ORG UNIT [FORMAT]
+# options: DOMAIN EMAIL COUNTRY STATE CITY ORG UNIT [ALIASES] [FORMAT]
 #
 # The function generates self signed SSL certificate and CSR request
 
@@ -11,8 +11,8 @@
 
 # Argument definition
 domain=$1
-domain=$(echo $domain | sed -e 's/\.*$//g' -e 's/^\.*//g')
-domain=$(echo $domain | tr '[:upper:]' '[:lower:]')
+domain=$(echo $domain |sed -e 's/\.*$//g' -e 's/^\.*//g')
+domain=$(echo $domain |tr '[:upper:]' '[:lower:]')
 domain_alias=$domain
 email=$2
 country=$3
@@ -20,7 +20,8 @@ state=$4
 city=$5
 org=$6
 org_unit=$7
-format=${8-shell}
+aliases=$8
+format=${9-shell}
 KEY_SIZE=2048
 DAYS=365
 
@@ -35,7 +36,8 @@ json_list_ssl() {
     echo -e "\t\"$domain\": {"
     echo "        \"CRT\": \"$crt\","
     echo "        \"KEY\": \"$key\","
-    echo "        \"CSR\": \"$csr\""
+    echo "        \"CSR\": \"$csr\","
+    echo "        \"DIR\": \"$workdir\""
     echo -e "\t}\n}"
 }
 
@@ -50,15 +52,18 @@ shell_list_ssl() {
     if [ ! -z "$csr" ]; then
         echo -e "\n$csr"
     fi
+    echo -e "\nDirectory: $workdir"
 }
 
 
+
 #----------------------------------------------------------#
 #                    Verifications                         #
 #----------------------------------------------------------#
 
-check_args '7' "$#" 'DOMAIN EMAIL COUNTRY STATE CITY ORG UNIT [FORMAT]'
-validate_format 'domain_alias' 'format'
+args_usage='DOMAIN EMAIL COUNTRY STATE CITY ORG UNIT [ALIASES] [FORMAT]'
+check_args '7' "$#" "$args_usage"
+is_format_valid 'domain_alias' 'format'
 
 
 #----------------------------------------------------------#
@@ -70,31 +75,41 @@ workdir=$(mktemp -d)
 cd $workdir
 
 # Generate private key
-export PASSPHRASE=gen_password
-openssl genrsa -des3 \
-    -out $domain.key \
-    -passout env:PASSPHRASE $KEY_SIZE 2>/dev/null
+openssl genrsa $KEY_SIZE > $domain.key 2>/dev/null
 
 # Generate the CSR
 subj="/C=$country/ST=$state/localityName=$city/O=$org"
 subj="$subj/organizationalUnitName=$org_unit/commonName=$domain"
 subj="$subj/emailAddress=$email"
+if [ -z "$aliases" ]; then
+    openssl req -sha256\
+        -new \
+        -batch \
+        -subj "$subj" \
+        -key $domain.key \
+        -out $domain.csr >/dev/null 2>&1
+else
+    for alias in $(echo $domain,$aliases |tr ',' '\n' |sort -u); do
+        dns_aliases="${dns_aliases}DNS:$alias,"
+    done
+    dns_aliases=$(echo $dns_aliases |sed "s/,$//")
 
-openssl req -sha256\
-    -new \
-    -batch \
-    -subj "$subj" \
-    -key $domain.key \
-    -out $domain.csr \
-    -passin env:PASSPHRASE >/dev/null 2>&1
+    if [ -e "/etc/ssl/openssl.cnf" ]; then
+        ssl_conf='/etc/ssl/openssl.cnf'
+    else
+        ssl_conf="/etc/pki/tls/openssl.cnf"
+    fi
 
-# Remove passphrase
-cp $domain.key $domain.key.tmp
-openssl rsa \
-    -in $domain.key.tmp \
-    -out $domain.key \
-    -passin env:PASSPHRASE >/dev/null 2>&1
-rm $domain.key.tmp
+    openssl req -sha256\
+        -new \
+        -batch \
+        -subj "$subj" \
+        -key $domain.key \
+        -reqexts SAN \
+        -config  <(cat $ssl_conf \
+            <(printf "[SAN]\nsubjectAltName=$dns_aliases")) \
+        -out $domain.csr >/dev/null 2>&1
+fi
 
 # Generate the cert 1 year
 openssl x509 -req -sha256 \
@@ -124,7 +139,7 @@ case $format in
 esac
 
 # Delete tmp dir
-rm -rf $workdir
+#rm -rf $workdir
 
 
 #----------------------------------------------------------#
@@ -132,6 +147,6 @@ rm -rf $workdir
 #----------------------------------------------------------#
 
 # Logging
-log_event "$OK" "$EVENT"
+log_event "$OK" "$ARGUMENTS"
 
 exit
diff --git a/bin/v-list-letsencrypt-user b/bin/v-list-letsencrypt-user
new file mode 100755
index 00000000..cded9600
--- /dev/null
+++ b/bin/v-list-letsencrypt-user
@@ -0,0 +1,82 @@
+#!/bin/bash
+# info: list letsencrypt key
+# options: USER [FORMAT]
+#
+# The function for obtaining the letsencrypt key thumbprint
+
+
+#----------------------------------------------------------#
+#                    Variable&Function                     #
+#----------------------------------------------------------#
+
+# Argument definition
+user=$1
+format=${2-shell}
+
+# Includes
+source $VESTA/func/main.sh
+
+# JSON list function
+json_list() {
+    echo '{'
+    echo '    "'$user'": {
+        "EMAIL": "'$EMAIL'",
+        "EXPONENT": "'$EXPONENT'",
+        "MODULUS": "'$MODULUS'",
+        "THUMB: "'$THUMB'"
+    }'
+    echo '}'
+}
+
+# SHELL list function
+shell_list() {
+    echo "USER:           $user"
+    echo "EMAIL:          $EMAIL"
+    echo "THUMB:          $THUMB"
+    echo "EXPONENT:       $EXPONENT"
+    echo "MODULUS:        $MODULUS"
+}
+
+# PLAIN list function
+plain_list() {
+    echo -e "$user\t$EMAIL\t$EXPONENT\t$MODULUS\t$THUMB"
+}
+
+# CSV list function
+csv_list() {
+    echo "USER,EMAIL,EXPONENT,MODULUS,THUMB"
+    echo "$user,$EMAIL,$EXPONENT,$MODULUS,$THUMB"
+}
+
+
+#----------------------------------------------------------#
+#                    Verifications                         #
+#----------------------------------------------------------#
+
+check_args '1' "$#" 'USER [FORMAT]'
+is_object_valid 'user' 'USER' "$user"
+if [ ! -e "$USER_DATA/ssl/le.conf" ]; then
+    check_result $E_NOTEXIST "LetsEncrypt user account doesn't exist"
+fi
+
+
+#----------------------------------------------------------#
+#                       Action                             #
+#----------------------------------------------------------#
+
+source $USER_DATA/ssl/le.conf
+
+# Listing data
+case $format in
+    json)   json_list ;;
+    plain)  plain_list ;;
+    csv)    csv_list ;;
+    shell)  shell_list ;;
+esac
+
+
+#----------------------------------------------------------#
+#                       Vesta                              #
+#----------------------------------------------------------#
+
+exit
diff --git a/bin/v-sign-letsencrypt-csr b/bin/v-sign-letsencrypt-csr
new file mode 100755
index 00000000..c0d4eceb
--- /dev/null
+++ b/bin/v-sign-letsencrypt-csr
@@ -0,0 +1,112 @@
+#!/bin/bash
+# info: sing letsencrypt csr
+# options: USER DOMAIN CSR_DIR [FORMAT]
+#
+# The function signs certificate request using LetsEncript API
+
+
+#----------------------------------------------------------#
+#                    Variable&Function                     #
+#----------------------------------------------------------#
+
+# Argument definition
+user=$1
+domain=$(idn -t --quiet -u "$2" )
+domain=$(echo $domain | tr '[:upper:]' '[:lower:]')
+csr="$3/$domain.csr"
+format=$4
+
+# Includes
+source $VESTA/func/main.sh
+source $VESTA/conf/vesta.conf
+
+# encode base64
+encode_base64() {
+    cat |base64 |tr '+/' '-_' |tr -d '\r\n='
+}
+
+
+#----------------------------------------------------------#
+#                    Verifications                         #
+#----------------------------------------------------------#
+
+check_args '3' "$#" 'USER DOMAIN CSR'
+is_format_valid 'user' 'domain'
+is_system_enabled "$WEB_SYSTEM" 'WEB_SYSTEM'
+is_object_valid 'user' 'USER' "$user"
+is_object_unsuspended 'user' 'USER' "$user"
+if [ ! -e "$USER_DATA/ssl/le.conf" ]; then
+    check_result $E_NOTEXIST "LetsEncrypt key doesn't exist"
+fi
+check_domain=$(grep -w "$domain'" $USER_DATA/web.conf)
+if [ -z "$check_domain" ]; then
+    check_result $E_NOTEXIST "domain $domain doesn't exist"
+fi
+if [ ! -e "$csr" ]; then
+    check_result $E_NOTEXIST "$csr doesn't exist"
+fi
+
+
+#----------------------------------------------------------#
+#                       Action                             #
+#----------------------------------------------------------#
+
+source $USER_DATA/ssl/le.conf
+api='https://acme-v01.api.letsencrypt.org'
+r_domain=$(echo "$check_domain" |cut -f 2 -d \')
+key="$USER_DATA/ssl/user.key"
+exponent="$EXPONENT"
+modulus="$MODULUS"
+thumb="$THUMB"
+
+# Defining JWK header
+header='{"e":"'$exponent'","kty":"RSA","n":"'"$modulus"'"}'
+header='{"alg":"RS256","jwk":'"$header"'}'
+
+# Requesting nonce
+nonce=$(curl -s -I "$api/directory" |grep Nonce |cut -f2 -d \ |tr -d '\r\n')
+protected=$(echo -n '{"nonce":"'"$nonce"'"}' |encode_base64)
+
+# Defining ACME query (request challenge)
+csr=$(openssl req -in $csr -outform DER |encode_base64)
+query='{"resource":"new-cert","csr":"'$csr'"}'
+payload=$(echo -n "$query" |encode_base64)
+signature=$(printf "%s" "$protected.$payload" |\
+    openssl dgst -sha256 -binary -sign "$key" |encode_base64)
+data='{"header":'"$header"',"protected":"'"$protected"'",'
+data=$data'"payload":"'"$payload"'","signature":"'"$signature"'"}'
+
+# Sending request to LetsEncrypt API
+answer=$(mktemp)
+curl -s -d "$data" "$api/acme/new-cert" -o $answer
+if [ ! -z "$(grep Error $answer)" ]; then
+    detail="$(cat $answer |tr ',' '\n' |grep detail |cut -f 4 -d \")"
+    detail=$(echo "$detail" |awk -F "::" '{print $2}')
+    rm $answer
+    check_result $E_LIMIT "$detail"
+fi
+
+# Printing certificate
+crt=$(cat "$answer" |openssl base64 -e)
+rm $answer
+if [ "$format" != 'json' ]; then
+    echo "-----BEGIN CERTIFICATE-----"
+    echo "$crt"
+    echo "-----END CERTIFICATE-----"
+else
+    echo -e "{\n\t\"$domain\": {\n\t\t\"CRT\":\""
+    echo -n '-----BEGIN CERTIFICATE-----\n'
+    echo -n "$crt" |sed ':a;N;$!ba;s/\n/\\n/g'
+    echo -n '-----END CERTIFICATE-----'
+    echo -e  "\"\n\t\t}\n\t}"
+fi
+
+
+#----------------------------------------------------------#
+#                       Vesta                              #
+#----------------------------------------------------------#
+
+# Logging
+log_event "$OK" "$ARGUMENTS"
+
+exit
diff --git a/bin/v-update-letsencrypt-ssl b/bin/v-update-letsencrypt-ssl
new file mode 100755
index 00000000..39052097
--- /dev/null
+++ b/bin/v-update-letsencrypt-ssl
@@ -0,0 +1,66 @@
+#!/bin/bash
+# info: update letsencrypt ssl certificates
+# options: NONE
+#
+# The function for renew letsencrypt expired ssl certificate for all users
+
+
+#----------------------------------------------------------#
+#                    Variable&Function                     #
+#----------------------------------------------------------#
+
+# Importing system enviroment  as we run this script
+# mostly by cron wich not read it by itself
+source /etc/profile
+
+# Includes
+source $VESTA/func/main.sh
+source $VESTA/conf/vesta.conf
+
+
+#----------------------------------------------------------#
+#                       Action                             #
+#----------------------------------------------------------#
+
+# Defining user list
+users=$(ls $VESTA/data/users/*/ssl/le.conf |cut -f 7 -d /)
+
+# Checking users
+for user in $users; do
+    # Checking user certificates
+    for crt in $(ls $VESTA/data/users/$user/ssl/*.crt 2>/dev/null); do
+        # Checking certificate issuer
+        crt_data=$(openssl x509 -text -in $crt)
+        issuer=$(echo "$crt_data" |grep Issuer: |grep Encrypt)
+        if [ ! -z "$issuer" ]; then
+            expire=$(echo "$crt_data" |grep "Not After")
+            expire=$(echo "$expire" |cut -f 2,3,4 -d :)
+            expire=$(date -d "$expire" +%s)
+            now=$(date +%s)
+            expire=$((expire - now))
+            expire=$((expire / 86400))
+            domain=$(basename $crt |sed -e "s/.crt$//")
+            if [[ "$expire" -lt 31 ]]; then
+                aliases=$(echo "$crt_data" |grep DNS:)
+                aliases=$(echo "$aliases" |sed -e "s/DNS://g" -e "s/,//")
+                aliases=$(echo "$aliases" |tr ' ' '\n' |sed "/^$/d")
+                aliases=$(echo "$aliases" |grep -v "^$domain$")
+                if [ ! -z "$aliases" ]; then
+                    aliases=$(echo "$aliases" |sed -e ':a;N;$!ba;s/\n/,/g')
+                    $BIN/v-add-letsencrypt-domain $user $domain $aliases
+                else
+                    $BIN/v-add-letsencrypt-domain $user $domain
+                fi
+            fi
+        fi
+    done
+done
+
+#----------------------------------------------------------#
+#                       Vesta                              #
+#----------------------------------------------------------#
+
+# No Logging
+#log_event "$OK" "$EVENT"
+
+exit