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4 changes: 4 additions & 0 deletions lib/src/main/java/com/auth0/jwt/TokenUtils.java
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,10 @@ abstract class TokenUtils {
* @throws JWTDecodeException if the Token doesn't have 3 parts.
*/
static String[] splitToken(String token) throws JWTDecodeException {
if (token == null) {
throw new JWTDecodeException("The token is null");
}

String[] parts = token.split("\\.");
if (parts.length == 2 && token.endsWith(".")) {
//Tokens with alg='none' have empty String as Signature.
Expand Down