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Hi I have just started learning about ciphers and padding, and just wanted to know why is padding needed in CBC mode encryption, is it to get the blocks to all be of the same n-bit length? And why is it likely that this implementation of CBC mode using padding provides a padding oracle to an attacker? How does this work?

Hi I have just started learning about ciphers and padding, and just wanted to know why is padding needed in CBC mode encryption?

Hi I have just started learning about ciphers and padding, and just wanted to know why is padding needed in CBC mode encryption, is it to get the blocks to all be of the same n-bit length? And why is it likely that this implementation of CBC mode using padding provides a padding oracle to an attacker? How does this work?

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Padding in CBC mode

Hi I have just started learning about ciphers and padding, and just wanted to know why is padding needed in CBC mode encryption?