Function rsa::internals::decrypt_and_check

pub fn decrypt_and_check<R: Rng>(
    rng: Option<&mut R>, 
    priv_key: &RSAPrivateKey, 
    c: &BigUint
) -> Result<BigUint>

Performs RSA decryption, resulting in a plaintext BigUint. Peforms RSA blinding if an Rng is passed. This will also check for errors in the CRT computation.