German reunification assets. Facilitation of economic development through planning measures failed to close the disparity between East and West, not only in terms of the economic opportunity but also housing conditions and transport options. Tölle states that "the initial euphoria about having become one unified people again was increasingly replaced by a growing sense of difference between Easterners ("Ossis") and Westerners ("Wessis")". The fall of the Wall also instigated immediate cultural change. The first consequence was the closure in East Berlin of politically oriented cultural institutions. The fall of the Berlin Wall and the factors described above led to mass migration from
Meet-in-the-middle attack Meet-in-the-middle attack The meet-in-the-middle attack (MITM) is a generic space–time tradeoff cryptographic attack against encryption schemes which rely on performing multiple encryption operations in sequence. The MITM attack is the primary reason why Double DES is not used and why a Triple DES key (168-bit) can be bruteforced by an attacker with 2 space and 2 operations. When trying to improve the security of a block cipher, a tempting idea is to encrypt the data several times using multiple keys. One might think this doubles or even "n"-tuples the security of the multiple-encryption scheme, depending on the number of times