这是openssl-1.0.1h.tar.gz下载，openssh从6.5版本开始，使用openssl 源码编译的时候，必须使用动态库（在openssh 6.4之前的版本中没这种情况）；一直没找到具体的说明，但是经过无数次编译尝试，终于验证这种事实。
openssl-1.0.1h.tar.gz密码库的维护人员发布了一个高危安全漏洞的补丁（CVE-2016-2107），这个漏洞可以让攻击者在web服务器上解密登录证书或者执行恶意代码。
1.) configure: error: *** Can't find recent OpenSSL libcrypto (see config.log for details) ***
2.) OpenSSL version mismatch.
3.) checking OpenSSL header version... not found
Windows command-line tool supports UTF-8 opt-in option for arguments and console input. Setting OPENSSL_WIN32_UTF8 environment variable (to any value) allows Windows user to access PKCS#12 file generated with Windows CryptoAPI and protected with non-ASCII password， as well as files generated under UTF-8 locale on Linux also protected with non-ASCII password. [Andy Polyakov]
To mitigate the SWEET32 attack (CVE-2016-2183)， 3DES cipher suites have been disabled by default and removed from DEFAULT， just like RC4. See the RC4 item below to re-enable both.[Rich Salz]
The method for finding the storage location for the Windows RAND seed file has changed. First we check %RANDFILE%. If that is not set then we check the directories %HOME%， %USERPROFILE% and %SYSTEMROOT% in that order. If all else fails we fall back to C:\. [Matt Caswell]
The EVP_EncryptUpdate() function has had its return type changed from void to int. A return of 0 indicates and error while a return of 1 indicates success. [Matt Caswell]
