No reduction from IPPE to ABE

A reduction of class unstated from IPPE to ABE would imply a contradiction.

Statement

Migrated verbatim from inner-product-predicate-encryption § Other results:

• IPPE is incomparable to KP-ABE and CP-ABE: IPPE achieves full attribute-hiding but only captures inner-product predicates, while KP/CP-ABE supports arbitrary monotone Boolean formulas but leaks the access policy

Notes

source: folklore: the claim carried no citation on the page it was migrated from, and none was invented.

class: unstated: no citing page says which notion of reduction is meant. Recording a class the wiki does not state would add a claim.

Recorded during migration and not fixed — these are claims about the source text, not changes to it:

• ‘incomparable’ is an informal expressiveness comparison, not a proven separation in either direction; typed as a separation only because there is nowhere better to put it.
• No citation.
• Wikilink [[attribute-based-encryption|KP-ABE and CP-ABE]] bundles two objects into one link target.