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原文地址：http://blog.csdn.net/pjk1129/article/details/6855024#import @interface NSString (md5)-(NSString *) md5HexDigest;@end#import "NSString+MD5HexDigest.h"@implementation NSString (md5) -(NSString *) md5HexDigest{ const char *original_str = [self UTF8String]; unsigned char result[CC_MD5_DIG 阅读全文