<HTML><BODY><p dir=ltr>Two reasons may cause your problem. Corrupt RSA private key and invalid username. For example, my instance is Ubuntu, so the valid username should ubuntu@ec2-ip. You'd better check your img's version. To test RSA private Key, the best way is to create an new key which I suggest you get from the aws console. After you done, you can create a new instance with the new key.<br>
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<p dir=ltr>Saturday, 31 January 2015, 02:57PM -0500 from Yanqiao Zhan <yzhan14@stevens.edu>:</p>
<p dir=ltr>Hi guys,<br>
I do the experiment in linux-lab environment, and I have create the instance as expected. <br>
But when I use command  ssh -i ***.pem ec2-use@*.*.*.*, it asked me to enter passphrase for key **.pem. Did anyone face the same problem before?</p>
<p dir=ltr>Thank you!<br>
Yanqiao Zhan<br>
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