一种简易的话音保密装置

• 作 者: William N·Butler David L·conhu 冯莅
• 出 处: 通信保密
• 发表日期: 1985年02期
• 关键词: 话音保密 话音信道 微处理器 公安人员 模拟输出 模拟通信 数字技术 实时处理 数字处理技术 手持式

本文介绍了一种具有实用价值的、高效、经济的话音保密通信装置,它适用于标准音频信道。该装置采用标准电子元器件,其中包括一块完成实时处理的微处理器。早先的模拟通信技术已经不那么安全可靠了;尽管数字技术通常能给出高的保密度,但其输出的数字式数据与一般公用的话音信道不相容。这里所采用的一种独特的混合式方法,是将高保密度的数字处理技术与话带的模拟输出相结合;这样就只需一般短的密钥,并通过一种高级算法,有效地使密钥长得到成倍的扩展,而保密度则接近于较复杂的数字方式。我们的最终目的是要将该装置配备于公安人员的手持式无线电收发信机。

This article presents a practical, cost-effective, voice-secured communications device that is suitable for use with standard audio channels. The device uses standard electronic components, including a microprocessor to complete real-time processing. Earlier analog communication technologies were less secure and secure; while digital technologies often give high levels of confidentiality, the digital data they output is not compatible with generally available voice channels. A unique hybrid approach adopted here is the combination of high-density digital processing techniques with the analog output of the speech strip; thus, only a generally short key is used and an advanced algorithm is used to effectively make the secret The key length is multiplied, while the degree of security is close to the more complex digital way. Our ultimate goal is to equip the unit with a public security officer’s handheld radio transceiver.