[O] The OFB mode is discussed in Figure 3.8 (Page 92). Expla…
The OFB mode is discussed in Figure 3.8 (Page 92). Explain the following statement: “In OFB mode, a bit flip in ci for i > 0 only causes a bit flip in message block mi. However, a bit flip in c0 (i.e., in IV) will result in all the plaintext blocks being recovered incorrectly.” What is the effect of bit flip in CTR mode?