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In cryptography, ciphertext stealing (CTS) is a general method of using a block cipher mode of operation that allows for processing of messages that are not evenly divisible into blocks without resulting in any expansion of the ciphertext, at the cost of slightly increased complexity.
We prove the security of CBC encryption with ciphertext stealing. Our results cover all versions of ciphertext stealing recently recommended by NIST. The complexity assumption is that the underlying blockcipher is a good PRP, and the security notion achieved is the...
Ciphertext stealing. Many blockcipher modes require the input be a se-quence of complete blocks, each having a number of bits that is the blockcipher’s blocksize. One approach for dealing with inputs not of this form is ciphertext stealing. The classical combination is CBC encryption and ciphertext stealing, a mode going back to at least 1982 [14].
We prove the security of CBC encryption with ciphertext stealing. Our results cover all versions of ciphertext stealing recently recommended by NIST. The complexity assumption is that the underlying blockcipher is a good PRP, and the security notion achieved is the strongest one commonly considered for chosen-plaintext attacks ...
19 mar 2012 · We prove the security of CBC encryption with ciphertext stealing. Our results cover all versions of ciphertext stealing recently recommended by NIST.
The IEEE P1619 standard for achieving high degree of security in shared storage media is explored, regarding the Cipher Text Stealing (CTS) feature. Various characteristics that are altered by the inclusion of this feature into an IP core are explored, including area requirements, performance and resource exploitation.
Ciphertext stealing. Many blockcipher modes require the input be a sequence of complete blocks, each having a number of bits that is the blockcipher’s blocksize. One approach for dealing with inputs not of this form is ciphertext stealing. The classical combination is CBC encryption and ciphertext stealing, a mode going back to at least 1982 [14].
