JcaMTCSignatureVerifier (Bouncy Castle Library 1.85 API Specification)

java.lang.Object
- org.bouncycastle.cert.plants.jcajce.JcaMTCSignatureVerifier

All Implemented Interfaces:

MTCSignatureVerifier
```
public class JcaMTCSignatureVerifier
extends java.lang.Object
implements MTCSignatureVerifier
```
JCA-side implementation of MTCSignatureVerifier.
Bound to a PublicKey and one of the algorithm identifiers defined by Section 6.1 of draft-ietf-plants-merkle-tree-certs: "ECDSA-P256-SHA256", "ECDSA-P384-SHA384", "Ed25519", "ML-DSA-44", "ML-DSA-65", "ML-DSA-87".

The draft identifiers are mapped to JCA Signature names internally — the plain (r||s) ECDSA encoding used by MTCProof requires SHA256WITHPLAIN-ECDSA / SHA384WITHPLAIN-ECDSA, which BC's JCE provider registers (DER-encoded SHA256withECDSA is wire-incompatible with the MTCProof signature byte format).

Instances are created via JcaMTCSignatureVerifier.Builder.

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Class Description
  
  static class JcaMTCSignatureVerifier.Builder
  Builder for JcaMTCSignatureVerifier.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  java.lang.String getAlgorithm()
  
  boolean verify(byte[] cosignedMessage, byte[] signature)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getAlgorithm
```
public java.lang.String getAlgorithm()
```
    Specified by:
    
    getAlgorithm in interface MTCSignatureVerifier
    
    Returns:
    
    the MTC signature algorithm this verifier is bound to — one of the MTCSignatureAlgorithm constants. Lets callers check a registered verifier against the algorithm a CA publishes for its cosigner (Section 5.5 sigAlg).
  - verify
```
public boolean verify(byte[] cosignedMessage,
                      byte[] signature)
```
    Specified by:
    
    verify in interface MTCSignatureVerifier
    
    Parameters:
    
    cosignedMessage - the encoded CosignedMessage bytes
    
    signature - the candidate signature
    
    Returns:
    
    true if the signature is valid for the bound public key and algorithm