HashingSource (larksuite-oapi 2.4.17 API)

java.lang.Object
- com.lark.oapi.okio.ForwardingSource
- - com.lark.oapi.okio.HashingSource

所有已实现的接口:

Source, Closeable, AutoCloseable
```
public final class HashingSource
extends ForwardingSource
```
A source that computes a hash of the full stream of bytes it has supplied. To use, create an instance with your preferred hash algorithm. Exhaust the source by reading all of its bytes and then call hash() to compute the final hash value.
In this example we use HashingSource with a BufferedSource to make reading from the source easier.
```
   

   HashingSource hashingSource = HashingSource.sha256(rawSource);
   BufferedSource bufferedSource = Okio.buffer(hashingSource);

   ... // Read all of bufferedSource.

   ByteString hash = hashingSource.hash();
 
```

方法概要

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`ByteString`	`hash()` Returns the hash of the bytes supplied thus far and resets the internal state of this source.
`static HashingSource`	`hmacSha1(Source source, ByteString key)` Returns a sink that uses the obsolete SHA-1 HMAC algorithm to produce 160-bit hashes.
`static HashingSource`	`hmacSha256(Source source, ByteString key)` Returns a sink that uses the SHA-256 HMAC algorithm to produce 256-bit hashes.
`static HashingSource`	`md5(Source source)` Returns a sink that uses the obsolete MD5 hash algorithm to produce 128-bit hashes.
`long`	`read(Buffer sink, long byteCount)` Removes at least 1, and up to `byteCount` bytes from this and appends them to `sink`.
`static HashingSource`	`sha1(Source source)` Returns a sink that uses the obsolete SHA-1 hash algorithm to produce 160-bit hashes.
`static HashingSource`	`sha256(Source source)` Returns a sink that uses the SHA-256 hash algorithm to produce 256-bit hashes.

从类继承的方法 com.lark.oapi.okio.ForwardingSource
close, delegate, timeout, toString

从类继承的方法 java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 方法详细资料
  - md5
```
public static HashingSource md5(Source source)
```
    Returns a sink that uses the obsolete MD5 hash algorithm to produce 128-bit hashes.
  - sha1
```
public static HashingSource sha1(Source source)
```
    Returns a sink that uses the obsolete SHA-1 hash algorithm to produce 160-bit hashes.
  - sha256
```
public static HashingSource sha256(Source source)
```
    Returns a sink that uses the SHA-256 hash algorithm to produce 256-bit hashes.
  - hmacSha1
```
public static HashingSource hmacSha1(Source source,
                                     ByteString key)
```
    Returns a sink that uses the obsolete SHA-1 HMAC algorithm to produce 160-bit hashes.
  - hmacSha256
```
public static HashingSource hmacSha256(Source source,
                                       ByteString key)
```
    Returns a sink that uses the SHA-256 HMAC algorithm to produce 256-bit hashes.
  - read
```
public long read(Buffer sink,
                 long byteCount)
          throws IOException
```
    从接口复制的说明: Source
    
    Removes at least 1, and up to byteCount bytes from this and appends them to sink. Returns the number of bytes read, or -1 if this source is exhausted.
    
    指定者:
    
    read 在接口中 Source
    
    覆盖:
    
    read 在类中 ForwardingSource
    
    抛出:
    
    IOException
  - hash
```
public final ByteString hash()
```
    Returns the hash of the bytes supplied thus far and resets the internal state of this source.
    Warning: This method is not idempotent. Each time this method is called its internal state is cleared. This starts a new hash with zero bytes supplied.

类 HashingSource

方法概要

从类继承的方法 com.lark.oapi.okio.ForwardingSource

从类继承的方法 java.lang.Object

方法详细资料

md5

sha1

sha256

hmacSha1

hmacSha256

read

hash