序列图片验证码:生成及其强度分析

2009 International Conference for Internet Technology and Secured Transactions, (ICITST) Pub Date : 2009-11-01 DOI:10.1109/ICITST.2009.5435097

A. Jain, Ashish Jain, Aditya Raj, Tushar Pahwa

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引用次数: 5

摘要

在网络系统上使用验证码来区分人类用户和沉迷于垃圾邮件和其他欺诈活动的自动程序。目前使用的CAPTCHA已经被打破，并且由于CAPTCHA打破的不断演变而变得无效。因此，需要使用更强大的captcha来阻止这些破坏性攻击，同时保持在网站上易于实现和易于使用。本文介绍了由目标图片组成的序列图片验证码(SPC)，每个目标图片都带有一个标签。用户需要根据标签确定显示对象图片的逻辑顺序。因此，用户需要同时识别对象图片和标签。因此，标记引入了两个级别的安全性。此外，SPC作为一种图片验证码，继承了用户便利性高、操作简单的优点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Sequenced picture captcha: generation and its strength analysis

CAPTCHAs are employed on web systems to differentiate between human users and automated programs which indulge in spamming and other fraudulent activities. CAPTCHAs currently in use have been broken and rendered ineffective as a result of continuous evolution in CAPTCHA breaking. Thus, there is a need to employ stronger CAPTCHAs to keep these breaking attacks at bay while retaining ease of implementation on websites and ease of use for humans. In this paper, we introduce Sequenced Picture Captcha (SPC) which comprises of object pictures, each of which is accompanied by a Tag. The user is required to determine the logical sequence of the displayed object pictures based on the Tags. Hence, the user is required to identify both the object pictures and the Tags. Thus, Tagging introduces two levels of security. Moreover, being a Picture CAPTCHA, SPC inherits the advantages of high user convenience and simplicity of operation.

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2009 International Conference for Internet Technology and Secured Transactions, (ICITST)

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