进行md5加密的时候加入liblibcommonCrypto.dylib遇到libary冲突 

报library not found for -lcommonCrypto和libcommonCrypto.dylib.Link against the umbrella framework ‘System.framework‘错误

解决办法

删除liblibcommonCrypto.dylib 倒入 JavaScriptCore.framework

#import <CommonCrypto/CommonDigest.h>

iOS进行MD5加密libary冲突解决办法