For more security spongycastle -> bouncycastle

[Neustradamus]

For more security, can you change old spongycastle (based on old bouncycastle) to bouncycastle?

• https://www.bouncycastle.org/
• https://www.bouncycastle.org/releasenotes.html
• http://www.bouncycastle.org/latest_releases.html
• https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=bouncy%20castle
• https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=bouncycastle
• https://www.cvedetails.com/vulnerability-list/vendor_id-7637/Bouncycastle.html

[Benson0224]

same as tronprotocol/java-tron#3087, we will update the issue once we got progress.

[Mortezaahmadli]

#271 (comment)

[sergeifocusnik]

Hello. I don't want to take up your time. But right now, I definitely won't be able to help you. I need to go urgently for my wife. She's in Ukraine. And I just can't find money for gasoline. It's terrible. I'm going to go crazy!!!