[CalendarServer-users] 回复： A few questions about the functions of the server

[Andre LaBranche]

Hi,

> On Dec 2, 2016, at 7:07 PM, 陈锋 <chenfeng at fintechina.com.cn> wrote:
> 
> My server system is Ubuntu / 14.04.1 LTS amd64.
> I fllow the instructions here and got severl C compilation errors when I run bin/develop.
> https://github.com/apple/ccs-calendarserver/blob/master/doc/Admin/Guide.rst
> Such as:
> digestmd5.c:1019:7: error: 'DES_DECRYPT' undeclared (first use in this function)
>        DES_DECRYPT);
> digestmd5.c:1070:21: error: 'DES_ENCRYPT' undeclared (first use in this function)
>                      DES_ENCRYPT);
> digestmd5.c:1094:20: error: 'des_cblock' undeclared (first use in this function)
> ...

This may be caused by old library versions on your system. Make sure you're running the most recent version of 14.04, which is 14.04.5 as seen here: https://wiki.ubuntu.com/Releases - this might include updated system packages that resolve the problem. If not we can dig deeper.

CalendarServer has a fairly modern security posture with respect to rejecting known-insecure encryption mechanisms, and DES is definitely in that category (https://en.m.wikipedia.org/wiki/Data_Encryption_Standard).

-dre
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