What happens if someone obtains your public key?

If someone obtains your public key, they can use it to encrypt messages intended for you, ensuring that only you can decrypt them with your corresponding private key. Additionally, they can verify your digital signatures, confirming the authenticity of messages you send. However, possessing your public key does not compromise your private key or your overall security, as the public key is designed to be shared openly. It's essential to keep your private key secure, as that is what protects your communications and identity.