t

com.digitalasset.canton.serialization

HasCryptographicEvidence

trait HasCryptographicEvidence extends AnyRef

Trait for deterministically serializing an object to a com.google.protobuf.ByteString.

A class should extend this trait to indicate that the serialize method yields the same ByteString if invoked several times. Typical use cases of this behavior include:

  • Classes that represent a leaf of a Merkle tree.
  • Classes that represent content that is signed e.g. Hash or SignedProtocolMessageContent.
  • Classes that are mere wrappers of ByteString (for convenience of the caller) e.g. AuthenticationToken.

If a class merely represents content that is transmitted over a network, the class does not need to extend this trait.

It is strongly recommended to extend this trait by mixing in ProtocolVersionedMemoizedEvidence or MemoizedEvidenceWithFailure, instead of directly extending this trait.

Classes C implementing HasCryptographicEvidence must define a fromByteString: ByteString => C method in their companion object that converts a serialization back into an equal object. In particular, c.fromByteString(byteString).toByteString must equal byteString.

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Abstract Value Members

  1. abstract def getCryptographicEvidence: ByteString

    Returns the serialization of the object into a com.google.protobuf.ByteString.

    Returns the serialization of the object into a com.google.protobuf.ByteString. In particular, every instance i of this trait must equal fromByteString(i.toByteString).

    This method must yield the same result if it is invoked several times.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
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  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  8. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
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    Annotations
    @native() @HotSpotIntrinsicCandidate()
  9. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  10. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  11. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  12. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  13. final def notifyAll(): Unit
    Definition Classes
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    Annotations
    @native() @HotSpotIntrinsicCandidate()
  14. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  15. def toString(): String
    Definition Classes
    AnyRef → Any
  16. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.InterruptedException])
  17. final def wait(arg0: Long): Unit
    Definition Classes
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    @throws(classOf[java.lang.InterruptedException]) @native()
  18. final def wait(): Unit
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
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    @throws(classOf[java.lang.Throwable]) @Deprecated @Deprecated
    Deprecated

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