程序包 com.lark.oapi.okio

类 HashingSource

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.