How is it possible to generate a cryptocurrency address from a passphrase and encrypted private key without combining them on the same computer?

The BIP38 open-source standard makes this possible using an advanced cryptography technique called double-blind encryption. BIP38 allows an encrypted private key to be created without knowledge of the passphrase required to decrypt it, and it provides a confirmation code that can be used to verify that a passphrase can decrypt its corresponding encrypted private key without actually trying to decrypt it. Ballet’s innovative two-factor key generation process takes advantage of this advanced cryptography to produce a highly secure cryptocurrency wallet. For more information on Ballet’s patented 2FKG manufacturing process, please visit: https://www.balletcrypto.com/2FKG