fn decrypt_inner(em: Vec<u8>, k: usize) -> Result<(u8, Vec<u8>, u32)>Expand description
Removes the PKCS1v15 padding It returns one or zero in valid that indicates whether the plaintext was correctly structured. In either case, the plaintext is returned in em so that it may be read independently of whether it was valid in order to maintain constant memory access patterns. If the plaintext was valid then index contains the index of the original message in em.