| P. Zimmermann, "PGPfone: Owner's Manual", 1996, http://www.pgpi.com |
.... by using the well known DES block cipher [24] and a key prefixed by the two parties (see e.g. NeVot [26] and rat [13] In addition, some other software packages working at the application layer are proposed to offer a secure audio communication over the Internet (see e.g. Nautilus [11] PGPfone [29], and Speak Freely [28] but they do not include mechanized adaptive playout adjustment schemes. The paper is organized as follows. In Sect. II we first discuss how to approach the problem of guaranteeing real time secure audio communications over IP, and then we specify the characteristics of ....
....the results we have derived by analysing such a mechanism under the assumptions of the previous section. After this, we present also the performance of some software tools which offer secure audio communications over the Internet. In particular, we consider the audio tools Nautilus [11] PGPfone [29], and Speak Freely [28] The above methods adopt block cipher algorithms in order to encrypt each audio packet to be transmitted along the network. More precisely, they employ some well known cryptographic algorithms such as DES, IDEA, Blowfish, and CAST (see [24] for the technical details of ....
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P. Zimmermann, "PGPfone: Owner's Manual", 1996, http://www.pgpi.com
....in Kooperation mit den Gerateherstellern definiert werden kann. Damit dies jedoch gro flachig genutzt werden kann, mussen Standards definiert werden, was allerdings nicht unbedingt im Rahmen von TINA erfolgen mu . Die fur eine solche Kommunikation notige Hardware ist heute bereits verfugbar [Zim96], so da keine grundsatzlichen technischen Probleme bei der Umsetzung des beschriebenen Dienstes zu erwarten sind. 3.2.4 Mehrseitige Sicherheit In dem Anwendungsfeld von TINA kommt der mehrseitigen Sicherheit eine gro e Bedeutung zu. Hier mussen nun auch Fragen, wie etwa ob ein Teilnehmer ohne ....
P. R. Zimmermann. PGPfone Owner's Manual. Pretty Good Privacy, Inc., July 1996. http://www.pgp.com/products/fone-docs/fone 01.cgi.
....communication a new quality that did not exist in the past. The need for protecting the communication contents (payload data) in telecommunication systems against manipulation and disclosure (integrity and con dentiality protection) is well established and constitutes essentially a solved problem [15]. The protection of transactional data (such as who is communicating when, how often, and from where with whom) that contains equally sensitive information, is much less understood. This data could be used to construct a complete trace of the movements of a user carrying a mobile phone in ....
P. R. Zimmermann. PGPfone Owner's Manual. Pretty Good Privacy, Inc., July 1996. http://www.pgp.com/products/fone-docs/fone01.cgi.
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