Error : could not open digital id file with the password provided

I have created a self signed digital id using openssl. After creating this id it couldnt attached to adobe acrobat reader. always showing this error. I have double checked the password for the digital id and pretty sure that password is correct. Further i created digital id using adobe itself and there is no error showing. But my problem is the digital id created by adode have more validity like 5 years and i found out that it cannot be reduced by any means while creating it. Thats Y i created using openssl with reduced validity but that file cannot be attached to adobe and getting the specified error.

Question 1 : is there any way to reduce the validity period of the digital id created by adobe ?

Question 2 : is there any solution for the error which is getting when i try to add the digital id created by openssl ?