Requirements of symmetric key cryptography algorithm(NIST)- Advanced EncryptionSystem(AES)

• National Institute for Standards Technology put out a call for proposals for
  new crypto system with following requirements.
• Must provide a high level of security (i.e. difficult to decrypt in finite time).
• Must be completely specified and easily understood.
• Security must reside in key – Not in algorithm
• Must be available for all users
• Adaptable for use in diverse applications e.g.credit cards.
• Implementable economically in electronic devices.
• Must be efficient to use as both software and hardware.
• Must allow one to validate it.
• Must be exportable.
• No trap door.
• In October 2000 it announced the selection of an algorithm – called Rijin
  dael(Pronounce RAIN DOLL) as new Advance Encryption Standard (AES).