feat: Add validation for uploaded key type

imageroot/actions/upload-certificate/21validate_certificates

@@ -9,13 +9,26 @@ set -e
 
 CERT_FILE=uploaded_cert
 KEY_FILE=uploaded_key
+VALID_KEY=0
+TYPE_KEY=""
 
 del_certs() {
     rm -f $KEY_FILE $CERT_FILE
 }
 
 # checking if key is valid
-if ! openssl rsa -check -in $KEY_FILE >/dev/null 2>&1; then
+if openssl rsa -check -in $KEY_FILE >/dev/null 2>&1; then
+    VALID_KEY=1
+    TYPE_KEY="rsa"
+elif openssl dsa -check -in $KEY_FILE >/dev/null 2>&1; then
+    VALID_KEY=1
+    TYPE_KEY="dsa"
+elif openssl ec -check -in $KEY_FILE >/dev/null 2>&1; then
+    VALID_KEY=1
+    TYPE_KEY="ec"
+fi
+
+if [ $VALID_KEY -eq 0 ]; then
     echo "Key validation failed."
     del_certs
     exit 2
@@ -30,7 +43,7 @@ fi
 
 # check if cert is provided by key
 cert_hash="$(openssl x509 -noout -modulus -in $CERT_FILE | openssl md5)"
-key_hash="$(openssl rsa -noout -modulus -in $KEY_FILE | openssl md5)"
+key_hash="$(openssl $TYPE_KEY -noout -modulus -in $KEY_FILE | openssl md5)"
 if [ "$cert_hash" != "$key_hash" ]; then
     echo "Key didn't generate certificate."
     del_certs