Hi list, Please help me with some information and hints.
1. Is it possible, when transporting a message from Alice to Bob, without holding any of their private keys, to do the following checks: - verify the integrity of the message and make sure it is sanitized and Bob can decrypt it with his private key; - verify that the message was encrypted for Bob and not for anyone else (Alice didn't mix recipients by mistake); 2. Is it possible to have just one key (the primary one, no subkey) with E flag also (S,C,E) -- I know this is not recommended but this is a particular use case and the risks are acknowledged. I guess gnupg will not allow you to do this by default, but is there any magic that can be done? 3. Is it possible to import a secp256k1 private key and use it? For example a secp256k1 key in the following format: 0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D How could this be imported in gnupg? 4. Is there a way to skip the passphrase entirely and not encrypt the private key at all? Thanks.
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