基于PCI总线的加密设计[中国电子设计网] Keyword: encryption of software system，PCI bus，encryption card [gap=112]关键词: 软件系统加密 PCI总线 加密卡
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导致这种缺陷的一个重要原因是，大多数的操作系统来自美国，不允许开发人员出口健壮的加密软件。
A big reason for this deficiency is the simple fact that most operating systems ship from the United States, where developers aren't allowed to export robust cryptographic software.
加密和加密软件已经被用在许多不同的方式，使系统更安全。
Encryption and cryptographic software has been used in many different ways to make systems more secure.
本系统利用了PIC 12ce519内置的EEPROM来存放加密密钥字，极大的增加了软件被破解的难度。
The encryption system USES embedded EEPROM of PIC12CE519 to store the encryption key, and greatly enhances the difficulty of being cracked.
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