Understanding Manger’s Padding Oracle Attack on RSA Encryption

The previous article discussed Bleichenbacher’s 1998 attack on RSA encryption, which relies on access to a PKCS#1v15 padding oracle. Just a few years later, in 2001, James Manger published details of a different padding oracle attack on RSA encryption. Manger’s attack is similar to Bleichenbacher’s attack, but relies on a different type of padding oracle. Manger’s paper is shorter and easier to…