I am a software developer interested in developing an application with cryptography. I can explain what I want to accomplish, but I do not know the technical terms for the cryptographic functions I am seeking. Many Google searches have not helped me. Could someone please help me with the proper cryptographic terms for what I am seeking, so I know what to search for in my research?
Here is what I am looking for:
- Encrypt large amounts of data quickly with key E$E$.
- Encryption is currently unbreakable and is expected to remain so as far as is known.
- The encrypted data cannot be decrypted with key E$E$.
- The encrypted data can only be decrypted with key D$D$.
- Key E$E$ is created by passing key D$D$ into an algorithm/function.
- It is preferred that key D$D$ can be less than 20 characters and can be typed from what is visible on the keys of an ordinary computer keyboard. (AKA...a password)
Thank you!