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Objective-c MD5加密


一个简单的 MD5加密算法:

#import 
#import

@interface MD5 : NSobject 
{
} 
-(NSString *)MD5:(NSString *)string;
@end

@implementation MD5

-(NSString *)MD5:(NSString *)string
{
    const char *src = [[string lowercaseString] UTF8String];
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5(src, strlen(src), result);
    NSString * ret = [NSString stringWithFormat:@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
                      result[0], result[1], result[2], result[3],
                      result[4], result[5], result[6], result[7],
                      result[8], result[9], result[10], result[11],
                      result[12], result[13], result[14], result[15]];
    return ret;
}
@end

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