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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m having some problems using the otr_modify application from the otrlib toolkit.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Could somebody explain to me where I can get the mackey that is needed as the first parameter?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Assume I send the following text<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>“hi bob, my name is alice”<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Which is encrypted into the following data message:<o:p></o:p></p><p class=MsoNormal>?OTR:AAMD8E6ZSifXvlYAAAAAAQAAAAEAAADAD2DA/+dQWOE0SbzhRlF9MNezfZxG+qNXzGaJ65Wj3qr/72f1MSx1lSxJ2hZ0HX22rFbO3ctAY97iMNwVoZGW7WRj4Fy3JZWZ8ATxLOSzX26DF9Ft/O1h8Ndu5gzVYoUsXAj0Q+UCkMD9jR2Pv6/ykLhx1eHyznpIFDxkExblcdOcFAHZX8iWeIocuCrsF8AoRMPTHsB3x8XXergQ6XOzOUQTNjyBSdoV46CFk3qWGJy8OC3HQPQhG4voP1wyvBUJAAAAAAAAAAEAAAAZoCjmoJICwz+7CJZ//uMLWbrm9pT4ABiURY39QOGdMud4QQIA3gI1pXh+KUIWAAAAAA==.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Wouldn’t the mackey be the key that I can retrieve using otr_parse, thus: 8dfd40e19d32e778410200de0235a5787e294216 ?<o:p></o:p></p><p class=MsoNormal>Or would it be the mackey that I would retrieve when re-establishing a new DH key and get it from the list of old mackeys?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Basically I want to change “hi bob, my name is alice” into “hi bob, my name is gates”.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Example output:<o:p></o:p></p><p class=MsoNormal>--------------<o:p></o:p></p><p class=MsoNormal>$ ./otr_modify.exe 8dfd40e19d32e778410200de0235a5787e294216 alice gates 19<o:p></o:p></p><p class=MsoNormal>?OTR:AAMD8E6ZSifXvlYAAAAAAQAAAAEAAADAD2DA/+dQWOE0SbzhRlF9MNezfZxG+qNXzGaJ65Wj3qr/72f1MSx1lSxJ2hZ0HX22rFbO3ctAY97iMNwVoZGW7WRj4Fy3JZWZ8ATxLOSzX26DF9Ft/O1h8Ndu5gzVYoUsXAj0Q+UCkMD9jR2Pv6/ykLhx1eHyznpIFDxkExblcdOcFAHZX8iWeIocuCrsF8AoRMPTHsB3x8XXergQ6XOzOUQTNjyBSdoV46CFk3qWGJy8OC3HQPQhG4voP1wyvBUJAAAAAAAAAAEAAAAZoCjmoJICwz+7CJZ//uMLWbrm9pT4ABiURY39QOGdMud4QQIA3gI1pXh+KUIWAAAAAA==.<o:p></o:p></p><p class=MsoNormal>MAC does not verify: wrong MAC key?<o:p></o:p></p><p class=MsoNormal>--------------<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m still trying to get my head around the whole protocol description. This would help. References to the manual in the explanation would definitely help as well.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thank you very much,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Greetings Bjorn<o:p></o:p></p></div></body></html>