diff --git a/acme.sh b/acme.sh
index c92a998..48c71df 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1003,7 +1003,7 @@ _sign() {
 
   _sign_openssl="${ACME_OPENSSL_BIN:-openssl} dgst -sign $keyfile "
 
-  if grep "BEGIN RSA PRIVATE KEY" "$keyfile" >/dev/null 2>&1; then
+  if grep "BEGIN RSA PRIVATE KEY" "$keyfile" >/dev/null 2>&1 || grep "BEGIN PRIVATE KEY" "$keyfile" >/dev/null 2>&1; then
     $_sign_openssl -$alg | _base64
   elif grep "BEGIN EC PRIVATE KEY" "$keyfile" >/dev/null 2>&1; then
     if ! _signedECText="$($_sign_openssl -sha$__ECC_KEY_LEN | ${ACME_OPENSSL_BIN:-openssl} asn1parse -inform DER)"; then
diff --git a/dnsapi/dns_transip.sh b/dnsapi/dns_transip.sh
new file mode 100644
index 0000000..23debe0
--- /dev/null
+++ b/dnsapi/dns_transip.sh
@@ -0,0 +1,162 @@
+#!/usr/bin/env sh
+TRANSIP_Api_Url="https://api.transip.nl/v6"
+TRANSIP_Token_Read_Only="false"
+TRANSIP_Token_Global_Key="false"
+TRANSIP_Token_Expiration="30 minutes"
+# You can't reuse a label token, so we leave this empty normally
+TRANSIP_Token_Label=""
+
+########  Public functions #####################
+#Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_transip_add() {
+  fulldomain="$1"
+  _debug fulldomain="$fulldomain"
+  txtvalue="$2"
+  _debug txtvalue="$txtvalue"
+  _transip_setup "$fulldomain" || return 1
+  _info "Creating TXT record."
+  if ! _transip_rest POST "domains/$_domain/dns" "{\"dnsEntry\":{\"name\":\"$_sub_domain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"expire\":300}}"; then
+    _err "Could not add TXT record."
+    return 1
+  fi
+  return 0
+}
+
+dns_transip_rm() {
+  fulldomain=$1
+  _debug fulldomain="$fulldomain"
+  txtvalue=$2
+  _debug txtvalue="$txtvalue"
+  _transip_setup "$fulldomain" || return 1
+  _info "Removing TXT record."
+  if ! _transip_rest DELETE "domains/$_domain/dns" "{\"dnsEntry\":{\"name\":\"$_sub_domain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"expire\":300}}"; then
+    _err "Could not remove TXT record $_sub_domain for $domain"
+    return 1
+  fi
+  return 0
+}
+
+####################  Private functions below ##################################
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+_get_root() {
+  domain="$1"
+  i=2
+  p=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+
+    _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+    _domain="$h"
+
+    if _transip_rest GET "domains/$h/dns" && _contains "$response" "dnsEntries"; then
+      return 0
+    fi
+
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  _err "Unable to parse this domain"
+  return 1
+}
+
+_transip_rest() {
+  m="$1"
+  ep="$2"
+  data="$3"
+  _debug ep "$ep"
+  export _H1="Accept: application/json"
+  export _H2="Authorization: Bearer $_token"
+  export _H4="Content-Type: application/json"
+  if [ "$m" != "GET" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$TRANSIP_Api_Url/$ep" "" "$m")"
+    retcode=$?
+  else
+    response="$(_get "$TRANSIP_Api_Url/$ep")"
+    retcode=$?
+  fi
+
+  if [ "$retcode" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}
+
+_transip_get_token() {
+  nonce=$(echo "TRANSIP$(_time)" | _digest sha1 hex | cut -c 1-32)
+  _debug nonce "$nonce"
+
+  data="{\"login\":\"${TRANSIP_Username}\",\"nonce\":\"${nonce}\",\"read_only\":\"${TRANSIP_Token_Read_Only}\",\"expiration_time\":\"${TRANSIP_Token_Expiration}\",\"label\":\"${TRANSIP_Token_Label}\",\"global_key\":\"${TRANSIP_Token_Global_Key}\"}"
+  _debug data "$data"
+
+  #_signature=$(printf "%s" "$data" | openssl dgst -sha512 -sign "$TRANSIP_Key_File" | _base64)
+  _signature=$(printf "%s" "$data" | _sign "$TRANSIP_Key_File" "sha512")
+  _debug2 _signature "$_signature"
+
+  export _H1="Signature: $_signature"
+  export _H2="Content-Type: application/json"
+
+  response="$(_post "$data" "$TRANSIP_Api_Url/auth" "" "POST")"
+  retcode=$?
+  _debug2 response "$response"
+  if [ "$retcode" != "0" ]; then
+    _err "Authentication failed."
+    return 1
+  fi
+  if _contains "$response" "token"; then
+    _token="$(echo "$response" | _normalizeJson | sed -n 's/^{"token":"\(.*\)"}/\1/p')"
+    _debug _token "$_token"
+    return 0
+  fi
+  return 1
+}
+
+_transip_setup() {
+  fulldomain=$1
+
+  # retrieve the transip creds
+  TRANSIP_Username="${TRANSIP_Username:-$(_readaccountconf_mutable TRANSIP_Username)}"
+  TRANSIP_Key_File="${TRANSIP_Key_File:-$(_readaccountconf_mutable TRANSIP_Key_File)}"
+  # check their vals for null
+  if [ -z "$TRANSIP_Username" ] || [ -z "$TRANSIP_Key_File" ]; then
+    TRANSIP_Username=""
+    TRANSIP_Key_File=""
+    _err "You didn't specify a TransIP username and api key file location"
+    _err "Please set those values and try again."
+    return 1
+  fi
+  # save the username and api key to the account conf file.
+  _saveaccountconf_mutable TRANSIP_Username "$TRANSIP_Username"
+  _saveaccountconf_mutable TRANSIP_Key_File "$TRANSIP_Key_File"
+
+  if [ -f "$TRANSIP_Key_File" ]; then
+    if ! grep "BEGIN PRIVATE KEY" "$TRANSIP_Key_File" >/dev/null 2>&1; then
+      _err "Key file doesn't seem to be a valid key: ${TRANSIP_Key_File}"
+      return 1
+    fi
+  else
+    _err "Can't read private key file: ${TRANSIP_Key_File}"
+    return 1
+  fi
+
+  if [ -z "$_token" ]; then
+    if ! _transip_get_token; then
+      _err "Can not get token."
+      return 1
+    fi
+  fi
+
+  _get_root "$fulldomain" || return 1
+
+  return 0
+}