<table><tr><th>From:</th><th>Introduction to Cryptography Course Team &lt;noreply@coursera.org&gt;</th></tr><tr><td>Sent:
To:</td><td>Monday, January 28, 2013 8:28 AM
jeeproject@yahoo.com</td></tr><tr><td>Subject:</td><td>Online Cryptography class: week 3</td></tr></table>

Dear jeffrey epstein,

The week 3 lectures and problem set are posted on the course web site at

https://crypto.stanford.edu/OnlineCrypto

The problem set is due in three weeks.

This week's topic is data integrity and we will discuss a number of classic constructions for MAC systems. For now we only discuss how to prevent modification of non-secret data. Next week we will come back to encryption and show how to provide both confidentiality and integrity.

This week's programming project shows how to authenticate large video files. Even if you don't do the project, please read the project description since it teaches an important concept called a hash chain.

As always, the discussions on the course forums are very instructive. Please continue posting your questions and feedback.

Hope everyone is enjoying the course,

Dan

Introduction to Cryptography Course Team You are receiving this email because jeeproject@yahoo.com is enrolled in Introduction to Cryptography <https://class.coursera.org/crypto-005/class/index> . To stop receiving similar future emails from this class, please click here <https://class.coursera.org/crypto-005/auth/stop_emails?data=peL98kpwZvNjsNLMlx66%2BJsZpxl8g5skqiZr3KTSmB0fQTyFiUMkVdVpgajCKkxr4MySjUc7rx0ZbV9Awq6BjA%3D%3D%7CMiDJw8maG89RPFObNVK2RCU%2BYx%2BQ9lit6yfzFNZHqlh2Ety2%2FexQZelr0xQilzqvAsEWi%2BaEOA2YOYDWA0xoCHWAV7wUsHNXInbcP0ReS2R3glgb1KAC3%2BK7ApG8YiB8gcmfRdKDoopRWF1r83zxEfrb4Qlrjw mrrnxdUASAeRWvjxxW%2BhhbbRqmOLKlgR82> . Please do not reply directly to this email. If you have any questions or feedback, please post on the class discussion forums <https://class.coursera.org/crypto-005/forum/index> . For general questions, please visit our support site <http://help.coursera.org/> .

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