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    Security based on subliminal and supraliminal channels for data objects
    62.
    发明授权
    Security based on subliminal and supraliminal channels for data objects 有权

    公开(公告)号：US07127615B2

    公开(公告)日：2006-10-24

    申请号：US09956262

    申请日：2001-09-20

    Applicant: Scott A. Moskowitz

    Inventor： Scott A. Moskowitz

    IPC: H04L9/00

    CPC classification number: H04L63/12 ,  G06F21/10 ,  G06F2221/0737 ,  G06Q20/3823 ,  G06Q30/06 ,  G06T1/0071 ,  H04K1/00 ,  H04L9/3236 ,  H04L63/0428 ,  H04L2209/608 ,  H04L2463/101 ,  H04L2463/102

    Abstract: This invention relates to security for data objects; more particularly, the present invention relates to improved security based on subliminal and supraliminal channels for data objects.In one embodiment, a method for protecting a data signal comprises: providing a data signal to be encoded; using a first predetermined key to encode a first set of independent data into the data signal imperceptibly; and using a second predetermined key to encode a second set of independent data into the data signal perceptibly.In another embodiment, a method of protecting a data object comprises: steganographically encoding a subset of candidate bits in a digitized sample stream; perceptibly manipulating data in the digitized sample stream; and combining the imperceptible and perceptible data changes to create a secure/unique digital sample stream.In yet another embodiment, a method for securing a data signal comprises: preanalyzing said data signal for candidate watermark/signature bits; steganographically encoding independent data into the data signal into a subset of the candidate watermark bits, at least one time; and encoding the data signal subsequently with a perceptible technique.In yet another embodiment, a method of protecting a data signal comprises: imperceptibly embedding data using a watermarking technique; perceptibly signing the data using the receiver's public key; encrypting the data signal using the receiver's public key and the private key used to watermark the signal; and enabling a receiver to authenticate/verify (separate steps) the data signal while connected to a communications channel.

    Optimization methods for the insertion, protection, and detection of digital watermarks in digital data
    63.
    发明授权
    Optimization methods for the insertion, protection, and detection of digital watermarks in digital data 有权

    公开(公告)号：US07107451B2

    公开(公告)日：2006-09-12

    申请号：US09789711

    申请日：2001-02-22

    Applicant: Scott A. Moskowitz

    Inventor： Scott A. Moskowitz

    IPC: H04L9/00

    CPC classification number: H04L63/0428 ,  G06F21/10 ,  G06F2221/0737 ,  G06Q20/3823 ,  G06Q30/06 ,  H04L9/3297 ,  H04L63/12 ,  H04L2209/08 ,  H04L2209/608 ,  H04L2463/101 ,  H04L2463/102 ,  H04N21/23892 ,  H04N21/8358

    Abstract: Disclosed herein are methods and systems for encoding digital watermarks into content signals. Also disclosed are systems and methods for detecting and/or verifying digital watermarks in content signals.According to one embodiment, a system for encoding of digital watermark information includes: a window identifier for identifying a sample window in the signal; an interval calculator for determining a quantization interval of the sample window; and a sampler for normalizing the sample window to provide normalized samples.According to another embodiment, a system for pre-analyzing a digital signal for encoding at least one digital watermark using a digital filter is disclosed.According to another embodiment, a method for pre-analyzing a digital signal for encoding digital watermarks comprises: (1) providing a digital signal; (2) providing a digital filter to be applied to the digital signal; and (3) identifying an area of the digital signal that will be affected by the digital filter based on at least one measurable difference between the digital signal and a counterpart of the digital signal selected from the group consisting of the digital signal as transmitted, the digital signal as stored in a medium, and the digital signal as played backed.According to another embodiment, a method for encoding a watermark in a content signal includes the steps of (1) splitting a watermark bit stream; and (2) encoding at least half of the watermark bit stream in the content signal using inverted instances of the watermark bit stream.Other methods and systems for encoding/decoding digital watermarks are also disclosed.

    Method and system for digital watermarking
    64.
    发明授权
    Method and system for digital watermarking 失效
    数字水印方法与系统

    公开(公告)号：US07007166B1

    公开(公告)日：2006-02-28

    申请号：US09545589

    申请日：2000-04-07

    Applicant: Scott A. Moskowitz ,  Marc Cooperman

    Inventor： Scott A. Moskowitz ,  Marc Cooperman

    IPC: H04L9/00

    CPC classification number: G06T1/0021 ,  H04L9/0662 ,  H04L2209/56 ,  H04L2209/608 ,  H04N1/32187

    Abstract: A method for applying a digital watermark to a content signal is disclosed. In accordance with such a method, a watermarking key is identified. The watermarking key includes a binary sequence and information describing application of that binary sequence to the content signal. The digital watermark is then encoded within the content signal at one or more locations determined by the watermarking key.

    Abstract translation: 公开了一种将数字水印应用于内容信号的方法。 根据这种方法，识别水印密钥。 水印密钥包括二进制序列和描述该二进制序列到内容信号的应用的信息。 然后，在由水印密钥确定的一个或多个位置处，在内容信号内对数字水印进行编码。

    Z-transform implementation of digital watermarks
    65.
    发明授权
    Z-transform implementation of digital watermarks 失效
    数字水印的Z变换实现

    公开(公告)号：US06853726B1

    公开(公告)日：2005-02-08

    申请号：US09456319

    申请日：1999-12-08

    Applicant: Scott A. Moskowitz ,  Marc Cooperman

    Inventor： Scott A. Moskowitz ,  Marc Cooperman

    IPC: G06T1/00 ,  H04L29/06 ,  H04N1/32 ,  H04N7/26 ,  H04K1/00 ,  H04L9/00

    CPC classification number: H04N19/467 ,  G06T1/0028 ,  G06T1/005 ,  G06T1/0085 ,  G06T2201/0052 ,  H04L63/12 ,  H04L2463/101 ,  H04N1/32144 ,  H04N1/32149 ,  H04N1/32187 ,  H04N1/32277 ,  H04N2201/3233 ,  H04N2201/327

    Abstract: Z-transform calculations may be used to encode (and/or decode) carrier signal independent data (e.g., digital watermarks) to a digital sample stream. Deterministic and non-deterministic components of a digital sample stream signal may be analyzed for the purposes of encoding carrier signal independent data to the digital sample stream. The carrier signal independent data may be encoded in a manner such that it is restricted or concentrated primarily in the non-deterministic signal components of the carrier signal. The signal components can include a discrete series of digital samples and/or a discreet series of carrier frequency sub-bands of the carrier signal. Z-transform calculations may be used to measure a desirability of particular locations and a sample stream in which to encode the carrier signal independent data.

    Abstract translation: Z变换计算可用于将载波信号无关数据（例如，数字水印）编码（和/或解码）到数字样本流。 可以分析数字样本流信号的确定性和非确定性分量，用于将载波信号无关数据编码到数字样本流。 载波信号独立数据可以以这样的方式进行编码，使得它主要被限制或集中在载波信号的非确定性信号分量中。 信号分量可以包括载波信号的离散系列数字样本和/或离散系列的载波频率子带。 Z变换计算可用于测量特定位置的可取性以及其中编码载波信号独立数据的采样流。

    Method for combining transfer functions with predetermined key creation
    66.
    发明授权
    Method for combining transfer functions with predetermined key creation 失效
    将传递函数与预定的密钥创建相结合的方法

    公开(公告)号：US06598162B1

    公开(公告)日：2003-07-22

    申请号：US09046627

    申请日：1998-03-24

    Applicant: Scott A. Moskowitz

    Inventor： Scott A. Moskowitz

    IPC: H04L900

    CPC classification number: G06T1/005 ,  G06F21/16 ,  G06F2211/007

    Abstract: A method for combining transfer functions with predetermined key creation. In one embodiment, digital information, including a digital sample and format information, is protected by identifying and encoding a portion of the format information. Encoded digital information, including the digital sample and the encoded format information, is generated to protect the original digital information. In another embodiment, a digital signal, including digital samples in a file format having an inherent granularity, is protected by creating a predetermined key. The predetermined key is comprised of a transfer function-based mask set to manipulate data at the inherent granularity of the file format of the underlying digitized samples.

    Abstract translation: 一种用于将传递函数与预定的密钥创建相结合的方法。 在一个实施例中，通过识别和编码格式信息的一部分来保护包括数字样本和格式信息的数字信息。 生成包括数字样本和编码格式信息的编码数字信息以保护原始数字信息。 在另一个实施例中，包括具有固有粒度的文件格式的数字样本的数字信号通过创建预定密钥来保护。 预定密钥由基于传递函数的掩码组成，用于以基本数字化样本的文件格式的固有粒度来操纵数据。

    Method for human-assisted random key generation and application for digital watermark system
    68.
    发明授权
    Method for human-assisted random key generation and application for digital watermark system 失效
    人为辅助随机密钥生成和数字水印系统应用的方法

    公开(公告)号：US5822432A

    公开(公告)日：1998-10-13

    申请号：US587944

    申请日：1996-01-17

    Applicant: Scott A. Moskowitz ,  Marc Cooperman

    Inventor： Scott A. Moskowitz ,  Marc Cooperman

    IPC: G06T1/00 ,  H04L9/32 ,  H04L9/00

    CPC classification number: G06T1/0028 ,  G06T1/0071 ,  G06T1/0085 ,  H04L9/3247 ,  G06T2201/0052 ,  G06T2201/0083 ,  G11B20/00884 ,  H04L2209/608

    Abstract: A method for the human-assisted generation and application of pseudo-random keys for the purpose of encoding and decoding digital watermarks to and from a digitized data stream. A pseudo-random key and key application "envelope" are generated and stored using guideline parameters input by a human engineer interacting with a graphical representation of the digitized data stream. Key "envelope" information is permanently associated with the pseudo-random binary string comprising the key. Key and "envelope" information are then applied in a digital watermark system to the encoding and decoding of digital watermarks. The invention includes improvements to the methods of encoding and decoding digital watermarks. Improvements are: separation of the encoder from the decoder, increased information capacity relative to spread spectrum methods, destruction of content resulting from attempts to erase watermarks, detection of presence of watermarks without ability to access watermark information, multi-channel watermark capability, use of various classes of keys for watermark access control, support for alternative encoding, decoding, or other component algorithms, use of digital notary to authenticate and time stamp watermark certificates.

    Abstract translation: 用于人造辅助生成和应用伪随机密钥的方法，用于将数字水印与数字化数据流进行编码和解码。 使用由人类工程师输入的与数字化数据流的图形表示相互作用的指导参数来生成和存储伪随机密钥和密钥应用“信封”。 密钥“包络”信息与包括密钥的伪随机二进制串永久地相关联。 然后，将密钥和“包络”信息应用于数字水印系统中以进行数字水印的编码和解码。 本发明包括对数字水印的编码和解码方法的改进。 改进是：编码器与解码器的分离，相对于扩展频谱方法增加的信息容量，破坏由尝试擦除水印产生的内容，检测水印的存在而无需访问水印信息，多信道水印能力，使用 用于水印访问控制的各种类别的密钥，支持替代编码，解码或其他组件算法，使用数字公证书进行认证和时间戳水印证书。

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