Perform a known ciphertext attack

Assignment Help Computer Network Security

Reference no: EM133027146

This is intended to exercise understanding of transposition ciphers.

Part 1:
Perform a Ciphertext Only Attack against the following ciphertext.
C: DEH IRS SRN ETE IPH TSA NNR AED LST INA IFI HNS CGO CEG

Part 2:
Perform a Known Ciphertext Attack against the following ciphertext using columnar transposition with a 4-character unknown key.
C: CEL SER DMF OOB EBO WVE ERL NMX

Part 3:
Perform a Known Ciphertext Attack against the following ciphertext using the Rail Fence Cipher technique.
C: NEESFECBOMRBODEEVBIEREMR

Part 4:
Perform a Known Ciphertext Attack against the following cipher using double transposition cipher with keyword 'BLAST' and an unknown 3-character key.
C: OAF TRL MWA SAX PXL XNX EXO FIT COM OEU

Reference no: EM133027146

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