keytyping never end when gen-key, and importing key warning

[yuriping at sohu.com]

Hi, allWe're using gpg 1.4.20 on an arm target board;Problem 1.When
 I run "gpg --gen-key", everything done well, except the last step, type
 on the keyboard to gain enough entropy for the random number generator,
 the process seemingly will never end.Ref. to the attatchment, pls. download and check.I want to know what cause it and how to solve?So I generate one key on PC running Ubuntu, export the key, and then import the key into the target board.Now I can signature files with the key, but when I verify the signature successfully, one Warning emerged as belowProblem 2.    gpg: Signature made Thu Jun 16 10:56:45 2016 CST using RSA key ID 86111D4F    gpg: Good signature from "yuriping (0002) <yuriping at sohu.com>"    gpg: WARNING: This key is not certified with a trusted signature!    gpg:          There is no indication that the signature belongs to the owner.    Primary key fingerprint: 826B 7296 F49E AED4 F45B  443C 1907 1CAC 8611 1D4FHow can I solve this problem?    Best Regards!



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