Change in 1 character of AES-ECB ciphertext equals 17 character changes in the plaintext

Published: 14/11/2017
Change in 1 character of AES-ECB ciphertext equals 17 character changes in the plaintext
Source: CRYPTO.STACKEXCHANGE.COM

Here is what I did: Took a file and Encrypted it in AES-ECB Mode. "In_file" to "Enc_File" Changed 1 character in the generated ciphertext. Decrypted the edited (changed 1 character) file. "Dec_File". Compared "In_File" (original plaintext file) to "Dec_File" (Decryption of the ciphertext where I edited 1 character) Now, I see that the new decrypted file has 17 characters change when comp

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