文件名称:Advanced-Encryption-Standard
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AES is the Advanced Encryption Standard, a United States government standard
algorithm for encrypting and decrypting data. The standard is described in Federal
Information Processing Standard (FIPS) 197.1
On January 2, 1997, The National Institute of Standards and Technology (NIST)
published a request for comments for the “Development of a Federal Information
Processing Standard for Advanced Encryption Standard.”2 NIST sought to “consider
alternatives that offer a higher level of security”3 than that offered by the Data Encryption
Standard (DES), which grew vulnerable to brute-force attacks due to its 56-bit effective
key length.AES candidates were required to support a symmetric block cipher that
supported multiple key lengths. The algorithm had to be publicly defined, free to use, and
able to run efficiently in both hardware and software
algorithm for encrypting and decrypting data. The standard is described in Federal
Information Processing Standard (FIPS) 197.1
On January 2, 1997, The National Institute of Standards and Technology (NIST)
published a request for comments for the “Development of a Federal Information
Processing Standard for Advanced Encryption Standard.”2 NIST sought to “consider
alternatives that offer a higher level of security”3 than that offered by the Data Encryption
Standard (DES), which grew vulnerable to brute-force attacks due to its 56-bit effective
key length.AES candidates were required to support a symmetric block cipher that
supported multiple key lengths. The algorithm had to be publicly defined, free to use, and
able to run efficiently in both hardware and software
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Advanced Encryption Standard.pdf