Extract expiration date from private key file (.p12) without the password

Summary

– Steps to extract expiration date from a .p12 private key file without the password.

Details

1. Introduction
– Private key files like .p12 are encrypted and protected by a password for security reasons.
– However, there may be instances where one may need to access the expiration date of a .p12 private key file without having access to the password.
2. Steps to extract expiration date from a .p12 private key file without the password
1. Install OpenSSL on your computer if it is not already installed.
2. Open a command prompt or terminal window and navigate to the directory where the .p12 file is located.
3. Run the following command: `openssl pkcs12 -info -in filename.p12`
– Replace “filename” with the name of your .p12 file.
4. The output will include information about the certificate, including the expiration date.
5. Extracting the expiration date without the password is not possible using OpenSSL or any other free tool.
3.

Conclusion

– While it may be frustrating to have a .p12 file that you cannot access without the password, there are ways to extract important information like the expiration date.

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