SigningService

All Implemented Interfaces:
```
@DoNotImplement() 
public interface SigningService

                    
```
Responsible for storing and using private keys to sign things. An implementation of this may, for example, call out to a hardware security module that enforces various auditing and frequency-of-use requirements.
Corda provides an instance of DigitalSignatureVerificationService to flows via property injection.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`abstract DigitalSignature.WithKeyId`	`sign(@NotNull() Array<byte> bytes, @NotNull() PublicKey publicKey, @NotNull() SignatureSpec signatureSpec)`	Using the provided signing PublicKey, internally looks up the matching PrivateKey and signs the data.
`abstract Map<PublicKey, PublicKey>`	`findMySigningKeys(@NotNull() Set<PublicKey> keys)`	Looks into a set of signing keys to find keys owned by the caller.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
- Method Detail
  - sign
```
@Suspendable()@NotNull() abstract DigitalSignature.WithKeyId sign(@NotNull() Array<byte> bytes, @NotNull() PublicKey publicKey, @NotNull() SignatureSpec signatureSpec)
```
    Using the provided signing PublicKey, internally looks up the matching PrivateKey and signs the data.
    
    Parameters:
    
    bytes - The data to sign over using the chosen key.
    
    publicKey - The PublicKey partner to an internally held PrivateKey, either derived from the node's primary identity, or previously generated via the freshKey method.
    
    signatureSpec - The SignatureSpec to use when producing this signature.
  - findMySigningKeys
```
@Suspendable()@NotNull() abstract Map<PublicKey, PublicKey> findMySigningKeys(@NotNull() Set<PublicKey> keys)
```
    Looks into a set of signing keys to find keys owned by the caller. In case of CompositeKey it looks into the composite key leaves and returns the firstly found owned composite key leaf.
    
    Parameters:
    
    keys - The signing keys to look into.