[Cryptography] Name for a specific type of preimage resistance

[John Denker]

On 12/8/22 5:35 AM, Peter Gutmann asked:

> Is there a name for this special-case preimage attack, find the one preimage
> that contains the secret value, to distinguish it from a generic preimage
> attack, find any preimage?

If I understand the question, a good answer might be /decryption/.

If the preimage is unique, it isn't a hash so much as an
encryption, and a preimage attack is a decryption attack.