}
		}
	}()

	var (
		hr     *hash.Reader
		isSSEC = crypto.SSEC.IsEncrypted(objInfo.UserDefined)
	)

	var objectSize int64
	for _, partInfo := range objInfo.Parts {
		if isSSEC {
			hr, err = hash.NewReader(ctx, io.LimitReader(r, partInfo.Size), partInfo.Size, "", "", partInfo.ActualSize)
		} else {

                                && Objects.equals(this.children, that.children());
            }

            @Override
            public int hashCode() {
                return Objects.hash(name, value, attributes, children);
            }

            @Override
            public String toString() {
                try {
                    StringWriter writer = new StringWriter();

                    && Objects.equals(getGoal(), other.getGoal());
        }

        return false;
    }

    /** {@inheritDoc} */
    @Override
    public int hashCode() {
        return Objects.hash(getGoal(), getPluginDescriptor());
    }

    /**
     * @return the invocation lifecycle of the Mojo
     */
    public String getExecuteLifecycle() {
        return executeLifecycle;
    }

// object that has been uploaded using the S3 multipart
// API.
// An S3 multipart ETag has a -<part-number> suffix.
func (e ETag) IsMultipart() bool {
	return len(e) > 16 && !e.IsEncrypted() && bytes.ContainsRune(e, '-')
}

// Parts returns the number of object parts that are
// referenced by this ETag. It returns 1 if the object
// has been uploaded using the S3 singlepart API.
//

# OAuth2 实现密码哈希与 Bearer  JWT 令牌验证

至此，我们已经编写了所有安全流，本章学习如何使用 <abbr title="JSON Web Tokens">JWT</abbr> 令牌（Token）和安全密码哈希（Hash）实现真正的安全机制。

本章的示例代码真正实现了在应用的数据库中保存哈希密码等功能。

接下来，我们紧接上一章，继续完善安全机制。

## JWT 简介

JWT 即**JSON 网络令牌**（JSON Web Tokens）。

JWT 是一种将 JSON 对象编码为没有空格，且难以理解的长字符串的标准。JWT 的内容如下所示：

```

pkg go/doc, type Type struct, Examples []*Example
pkg hash/maphash, func MakeSeed() Seed
pkg hash/maphash, method (*Hash) BlockSize() int
pkg hash/maphash, method (*Hash) Reset()
pkg hash/maphash, method (*Hash) Seed() Seed
pkg hash/maphash, method (*Hash) SetSeed(Seed)
pkg hash/maphash, method (*Hash) Size() int
pkg hash/maphash, method (*Hash) Sum([]uint8) []uint8
pkg hash/maphash, method (*Hash) Sum64() uint64

}

// newProgressMessage - creates new Progress Message. S3 periodically sends this message, if requested.
// It contains information about the progress of a query that has started but has not yet completed.
//
// Header specification:
// Progress messages contain three headers, as follows:
// https://docs.aws.amazon.com/AmazonS3/latest/API/images/s3select-frame-diagram-progress.png
//

Bei umfangreichen Responses ist die direkte Rückgabe einer `Response` wesentlich schneller als ein <abbr title="Dictionary – Zuordnungstabelle: In anderen Sprachen auch Hash, Map, Objekt, Assoziatives Array genannt">Dictionary</abbr> zurückzugeben.

#### `HeroCreate` - the *data model* to create a hero { #herocreate-the-data-model-to-create-a-hero }

Now we create a `HeroCreate` model, this is the one that will **validate** the data from the clients.

It has the same fields as `HeroBase`, and it also has `secret_name`.

Now, when the clients **create a new hero**, they will send the `secret_name`, it will be stored in the database, but those secret names won't be returned in the API to the clients.

Wir konvertieren dieses iterierbare Objekt mit `list(data.items())` in eine richtige `list`.