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Now the condition is, that each employee has different key material solve the above problem, without the overhead for the additional headers Based on your requirements - you must have the different key material for each user... which obviously has to be stored somewhere. You don't want it in headers ... so it either needs to be in a different ...


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For completeness / posterity / future inquisitors, this is the response I got when I asked on the mailing list. I have also included it below because links sometimes break. No, you're not missing anything. This requirement is not, algorithmically, necessary. When you're decrypting with the symmetric key available, rsyncrypto uses the public key ...


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The term "plaintext" in cryptography does not imply that the input is actual text. Traditionally, the plaintext was often actual text, but the term just refers to the input (other than the key) to the encryption algorithm. Plaintext can be a sequence of letters, like in many classical ciphers; it can be an analog telephone signal; it can be an image or map; ...



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