Function compose_g2_product_keccak256 

pub fn compose_g2_product_keccak256(
    left: &KappaLabel<74>,
    right: &KappaLabel<74>,
) -> Result<AddressOutcome<74>, CompositionFailure>

CS-G2 under σ-axis Keccak256Hasher.

Errors

• CompositionFailure::OperandSigmaAxisMismatch — an operand’s σ-axis prefix is not "keccak256".
• CompositionFailure::MalformedOperand — an operand is not a well-formed κ-label.
• CompositionFailure::PipelineFailure — defensive.