Question: Source A Cryptanalyst PR Destination B Source A Cryptanalyst X Message source Encryption algorithm Y-EXPUX Decryption algorithm Destination x- DIPR Message source Encryption algorithm

Source A Cryptanalyst PR Destination B Source A Cryptanalyst X Message source Encryption algorithm Y-EXPUX Decryption algorithm Destination x- DIPR Message source Encryption algorithm Y-EPRX] PU Key pair source PR PR Key pair source PU Scheme A Scheme B Which scheme provides authentication and which one provides confidentiality? why? PR. Destination B Decryption algorithm Destination x= DIPU

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