How i can change address format from bech32 to base58?

[sosnovski]

Hello
Tell me, how can I change the address format from bech32 to base58?
My task is to make a module for exchanging encrypted messages. I plan to encrypt messages using ECDH, and for this I need to know the recipient’s public key in order to derive the general encryption key based on it.

[webmaster128]

Those are two different questions:

1. get a public key for an account
2. address encoding

The bech32 address does not contain sufficient data for the public key. You have to do a lookup on chain to query the public key. For some accounts it is avaiable, for some it is not.