Function bearssl::br_ghash_ctmul32

pub unsafe extern "C" fn br_ghash_ctmul32(
    y: *mut c_void, 
    h: *const c_void, 
    data: *const c_void, 
    len: usize
)

\brief GHASH implementation using multiplications (strict 32-bit).

This implementation uses multiplications of 32-bit values, with a 32-bit result. It is usually somewhat slower than br_ghash_ctmul(), but it is expected to be faster on architectures for which the 32-bit multiplication opcode does not yield the upper 32 bits of the product. It is constant-time (if multiplications are constant-time).

\param y the array to update. \param h the GHASH key. \param data the input data (may be NULL if len is zero). \param len the input data length (in bytes).