What are the common key and block sizes used by AES? Decrypt the following message. What...

What are the common key and block sizes used by AES?

Decrypt the following message. What is the message? What is the cipher? What is the key? Who is the author?

ZW ERKLIV YRJ DRUV REP FEV KYZEX CVJJ JLJTVGKZSCV KYRE RCC FKYVIJ FW VOTCLJZMV GIFGVIKP, ZK ZJ KYV RTKZFE FW KYV KYZEBZEX GFNVI TRCCVU RE ZUVR, NYZTY RE ZEUZMZULRC DRP VOTCLJZMVCP GFJJVJJ RJ CFEX RJ YV BVVGJ ZK KF YZDJVCW; SLK KYV DFDVEK ZK ZJ UZMLCXVU, ZK WFITVJ ZKJVCW ZEKF KYV GFJJVJJZFE FW VMVIP FEV, REU KYV IVTVZMVI TREEFK UZJGFJJVJJ YZDJVCW FW ZK. ZKJ GVTLCZRI TYRIRTKVI, KFF, ZJ KYRK EF FEV GFJJVJJVJ KYV CVJJ, SVTRLJV VMVIP FKYVI GFJJVJJVJ KYV NYFCV FW ZK. YV NYF IVTVZMVJ RE ZUVR WIFD DV, IVTVZMVJ ZEJKILTKZFE YZDJVCW NZKYFLK CVJJVEZEX DZEV; RJ YV NYF CZXYKJ YZJ KRGVI RK DZEV, IVTVZMVJ CZXYK NZKYFLK URIBVEZEX DV. KYRK ZUVRJ JYFLCU WIVVCP JGIVRU WIFD FEV KF REFKYVI FMVI KYV XCFSV, WFI KYV DFIRC REU DLKLRC ZEJKILTKZFE FW DRE, REU ZDGIFMVDVEK FW YZJ TFEUZKZFE, JVVDJ KF YRMV SVVE GVTLCZRICP REU SVEVMFCVEKCP UVJZXEVU SP ERKLIV, NYVE JYV DRUV KYVD, CZBV WZIV, VOGREJZSCV FMVI RCC JGRTV, NZKYFLK CVJJVEZEX KYVZI UVEJZKP ZE REP GFZEK, REU CZBV KYV RZI ZE NYZTY NV SIVRKYV, DFMV, REU YRMV FLI GYPJZTRC SVZEX, ZETRGRSCV FW TFEWZEVDVEK FI VOTCLJZMV RGGIFGIZRKZFE. ZEMVEKZFEJ KYVE TREEFK, ZE ERKLIV, SV R JLSAVTK FW GIFGVIKP.

Solutions

Expert Solution

By this AES algorithm we can decrypt the above encoded message.

Message :

A message is a human understandable code or text which human being can easily remember those message.

Key:

a key is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text, or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message.

Cipher:

A cryptographic algorithm, or cipher, is a mathematical function used in the encryption and decryption process. A cryptographic algorithm works in combination with a key-a word, number, or phrase-to encrypt the plaintext. The same plaintext encrypts to different cipher text with different keys.

Author :

An author is authorized user who sends a message into different encoded form

venereology answered 3 days ago

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