摘要:
The text-to-speech audio HIP technique described herein in some embodiments uses different correlated or uncorrelated words or sentences generated via a text-to-speech engine as audio HIP challenges. The technique can apply different effects in the text-to-speech synthesizer speaking a sentence to be used as a HIP challenge string. The different effects can include, for example, spectral frequency warping; vowel duration warping; background addition; echo addition; and varying the time duration between words, among others. In some embodiments the technique varies the set of parameters to prevent using Automated Speech Recognition tools from using previously used audio HIP challenges to learn a model which can then be used to recognize future audio HIP challenges generated by the technique. Additionally, in some embodiments the technique introduces the requirement of semantic understanding in HIP challenges.
摘要:
A security module generates a random image having a plurality of password-element indicators therein. The random image is provided to a user. The user selects portions of the random image. The security module determines whether the selected portions of the random image correspond to a password for the user. The security module grants access if the selected portions of the random image correspond to the user's password. However, if the selected portions of the random image do not correspond to the user's password, the security module may generate another random image having a plurality of password-element indicators therein, wherein each of the random images are computationally de-correlated.
摘要:
Technologies for a human computation framework suitable for answering common sense questions that are difficult for computers to answer but easy for humans to answer. The technologies support solving general common sense problems without a priori knowledge of the problems; support for determining whether an answer is from a bot or human so as to screen out spurious answers from bots; support for distilling answers collected from human users to ensure high quality solutions to the questions asked; and support for preventing malicious elements in or out of the system from attacking other system elements or contaminating the solutions produced by the system, and preventing users from being compensated without contributing answers.
摘要:
Techniques for generating a human user test for online applications or services may include splitting the visual objects in an image into multiple partial images, and forming one or more alignment positions. At each of the alignment positions, some of the visual objects appear recognizable while some bogus visual objects also appear to prevent robots from recognizing the alignment positions. A user is requested to find the multiple alignment positions to return recognizable visual objects. A system determines that the user is a human user if the recognizable visual objects input by the user match the visual objects in the image.
摘要:
Technologies for a Consumer Privacy Digital Rights Management system based on stable partially blind signatures that enable a license server to provide licenses for delivery to users without knowing the corresponding digital contents that users access with the license. Therefore consumer privacy is protected during license acquisition. Further, if the client DRM module in the DRM system does not disclose any information about a user's digital content access, and the messages that the client DRM module sends out are in plain text enabling verification that the client DRM module is not disclosing such information, then consumer privacy is fully protected by the DRM system.
摘要:
Methods and systems for parallel Web page processing are usable to parallelize Web page document parsing, Web page layout calculations, Web page style formatting, and Web page script engine processing. Such parallelized parsers may be used to enhance Web page processing and exploit multi-core and multi-processor computing device resources. The parallelized script engine may be used to enhance Web page processing when independent scripting events exist in the Web page document. Additionally, the parallelized layout calculations and style formatting may be used to further enhance Web page processing by allowing multi-core and multi-processor computing devices to take advantage of their parallel processing abilities.
摘要:
A manipulable human interactive proof (HIP) displays at most a portion of verification information. A user performs at least one manipulation on the HIP display to obtain full verification information.
摘要:
A trust level of an account is determined at least partly based on a degree of the memorability of an email address associated with the account. Additional features such as those based on the domain of the email address and those from the additional information such as name, phone number, and address associated with the account may also be used to determine the trust level of the account. A machine learning process may be used to learn a classification model based on one or more features that distinguish a malicious account from a benign account from training data. The classification model is used to determine a trust level of the account, and/or if the account is malicious or benign, and may be continuously improved by incrementally adapting or improving the model with new accounts.
摘要:
Technologies for distributed single sign-on operable to provide user access to a plurality of services via authentication to a single entity. The distributed single sign-on technologies provide a set of authentication servers and methods for privacy protection based on splitting secret, keys and user profiles into secure shares and periodically updating shares among the authentication servers without affecting the underlying secrets. The correctness of the received partial token or partial profiles can be verified with non-interactive zero-knowledge proofs.
摘要:
A manipulable human interactive proof (HIP) displays at most a portion of verification information. A user performs at least one manipulation on the HIP display to obtain full verification information.