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    • 45. 发明申请
    • Page coloring with color inheritance for memory pages
    • 页面着色与内存页面的颜色继承
    • US20080055617A1
    • 2008-03-06
    • US11513984
    • 2006-08-31
    • Uday Savagaonkar
    • Uday Savagaonkar
    • G06F15/00
    • G06F12/1458G06F12/1009G06F12/145G06F2212/653
    • Apparatuses, methods, and media for page coloring with color inheritance for memory pages are disclosed. Some embodiments may include an interface to access a memory and a paging unit including translation logic, inheritance logic, and comparison logic. The translation logic translates a first address to a second address based on an entry in a data structure, wherein the first address is provided by an instruction stored in a first page in the memory and the entry includes a base address of a second page in the memory including the second address and a color of the second page. The inheritance logic may determine an effective current page color of the first page based on a color of the first page. The comparison logic may compare the effective current page color of the first page to the color of the second page. Other embodiments are disclosed and claimed.
    • 公开了用于内存页面的具有彩色继承的页面着色的装置,方法和媒体。 一些实施例可以包括访问存储器的接口和包括翻译逻辑,继承逻辑和比较逻辑的寻呼单元。 翻译逻辑基于数据结构中的条目将第一地址转换为第二地址,其中第一地址由存储在存储器中的第一页中的指令提供,并且条目包括第二地址的基地址 存储器,其包括第二地址和第二页的颜色。 继承逻辑可以基于第一页的颜色来确定第一页的有效的当前页面颜色。 比较逻辑可以将第一页的有效当前页面颜色与第二页面的颜色进行比较。 公开和要求保护其他实施例。
    • 50. 发明授权
    • Preventing pattern recognition in electronic code book encryption
    • 防止电子代码簿加密中的模式识别
    • US09531916B2
    • 2016-12-27
    • US13996890
    • 2011-12-30
    • Scott JanusJason MartinUday Savagaonkar
    • Scott JanusJason MartinUday Savagaonkar
    • H04N1/44H04L9/06G06F21/62
    • H04L9/0637G06F21/6209G06T1/20H04L2209/08H04N1/4486
    • In general, in one aspect, noise is injected into a bitmap associated with content to be presented on a display to create a noisy bitmap. The noisy bitmap is encrypted using electronic code book (ECB) encryption. The resulting ciphertext does not include recognizable patterns from the content as is typical with ECB encryption. The injection of noise may include modifying pixel values for at least a subset of pixels in the bitmap. The pixel values may be modified by using a counter, a known modification pattern, or a random number generator. The bitmap may be analyzed to determine how the bitmap can be modified to maximize the randomness of the bitmap while ensuring that the noisy bitmap is visually perceptually similar when presented. The noise may be injected into a block of pixels prior to the block being encrypted.
    • 通常,在一个方面,将噪声注入到与将要呈现在显示器上的内容相关联的位图中以产生噪声位图。 噪声位图使用电子代码簿(ECB)加密进行加密。 所得到的密文不包括来自内容的可识别模式,如ECB加密典型。 噪声的注入可以包括修改位图中的至少像素子集的像素值。 可以通过使用计数器,已知修改模式或随机数生成器来修改像素值。 可以分析位图以确定位图如何被修改以使位图的随机性最大化,同时确保在呈现时视觉上感觉上类似的噪声位图。 在块被加密之前,可以将噪声注入到像素块中。