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I was reading FIPS197 for a class (found here: http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf ) trying to find some sort of specific relation between CBC and AES. I guess my problem is that I don't really know what to look for. I take it that CBC is a component of AES?

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up vote 2 down vote accepted

CBC is just one of the modes of operation that can be applied to a general block cipher, i.e. it is not tied specifically to AES. For die diverse modes of operation for block encryption see: http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation

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Should add that ECB mode shouldn't be used. –  ewanm89 Oct 2 '12 at 11:52
    
CBC or CTR mode should also be not used alone as they do not provide any cipher-text integrity and there can be active attacks on these modes. –  Ali Ahmad Oct 3 '12 at 4:44
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