首页>
外国专利>
INTERFACE FOR A SECURE FAX TRANSMISSION SYSTEM WITH ENCRYPTING AND DECRYPTING
INTERFACE FOR A SECURE FAX TRANSMISSION SYSTEM WITH ENCRYPTING AND DECRYPTING
展开▼
机译：具有加密和解密功能的安全传真传输系统的接口
展开▼
页面导航
摘要
著录项
相似文献
摘要
41 INTERFACE FOR A SECURE FAX TRANSMISSION SYSTEM WITH ENCRYPTING AND DECRYPTING A secure facsimile interface includes a main CPU (30) having associated therewith a bulk memory (32) for storing transfer data between a Group 3 facsimile machine (20) and a secure encryptor/decryptor telephone unit (10) thatoperates in accordance with MIL-STD-188-161. The main CPU (30) interfaces with the Group 3 machine (20) through an The port. A TELCO simulator (42) generates the telephone signals necessary to communicate with the Group 3 machine (20) and a FAX interface (36) is operable to interface between the audioand digital domain, and with the main CPU (30). An RS232 interface is connected to the encryptor/ decryptor telephone unit (10) with a bit stream processor (40) operable to interface with the protocol thereof. A forward error correction processor (38) is provided for interfacing between the bit stream processor (40) and the main CPU (30) and selectively providing forward error correction detection of incoming data and encoding error correction information on outgoing data on a substantially real time basis. Data is received from the encryptor/decryptor telephone unit (10) on a page basis and stored in the memory (32) for later transfer to the Group 3 machine (20). In the opposite direction, data is received from the Group 3 machine (20) and stored on a page basis in the memory (32) for later transfer to the secure encryptor/decryptor telephone unit.
展开▼
