1.MD5加密

///MD5加密

+ (NSString *)md5:(NSString *)inputString{

    const char *cStr = [inputString UTF8String];

    unsigned char digest[CC_MD5_DIGEST_LENGTH];

    CC_MD5( cStr, (int)strlen(cStr), digest );

    NSMutableString *output = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];

    for(int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)

        [output appendFormat:@"%02x", digest[i]];

    ///转变成大写

    NSString *putString = [output uppercaseString];

    return  putString; 

}

1.SHA1加密

///sha1加密

+(NSString *)sha1:(NSString *)inputString{

    const char *cstr = [inputString cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData dataWithBytes:cstr length:inputString.length];

    uint8_t digest[CC_SHA1_DIGEST_LENGTH];

    CC_SHA1(data.bytes, (CC_LONG)data.length, digest);

    NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2];

    for(int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++) {

        [result appendFormat:@"%02x", digest[i]];

    }

    return result;

}