# javax.xml.crypto.dsig.spec

***

**1. Creating a CanonicalizationMethod**

```java
CanonicalizationMethod cm = factory.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE, (C14nParameterSpec) null);
```

This creates a canonicalization method that uses the inclusive c14n algorithm without any parameters.

**2. Creating a DigestMethod**

```java
DigestMethod dm = factory.newDigestMethod(DigestMethod.SHA256, null);
```

This creates a digest method that uses the SHA-256 algorithm without any parameters.

**3. Creating a SignatureMethod**

```java
SignatureMethod sm = factory.newSignatureMethod(SignatureMethod.RSA_SHA256, null);
```

This creates a signature method that uses the RSA-SHA256 algorithm without any parameters.

**4. Creating a Transform**

```java
Transform transform = factory.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null);
```

This creates a transform that uses the enveloped transform algorithm without any parameters.

**5. Creating a Reference**

```java
Reference ref = factory.newReference("#id", dm, transform, null, null);
```

This creates a reference to the element with the specified ID using the specified digest method and transform.

**6. Creating a SignedInfo**

```java
SignedInfo si = factory.newSignedInfo(cm, sm, Collections.singletonList(ref));
```

This creates a signed info object using the specified canonicalization method, signature method, and list of references.

**7. Creating a Signature**

```java
Signature signature = factory.newSignature();
signature.initSign(privateKey);
updateBuffer.writeTo(signature);
byte[] signedInfoBytes = signature.sign();
```

This creates a signature object, initializes it with the private key, updates it with the data to be signed, and then signs the data.

**8. Verifying a Signature**

```java
Signature signature = factory.newSignature();
signature.initVerify(publicKey);
updateBuffer.writeTo(signature);
boolean verified = signature.verify(signedInfoBytes);
```

This creates a signature object, initializes it with the public key, updates it with the data that was signed, and then verifies the signature.

**9. Creating a KeyInfo**

```java
KeyInfo keyInfo = factory.newKeyInfo(Collections.singletonList(keyName));
```

This creates a key info object containing the specified key name.

**10. Creating a KeyValue**

```java
KeyValue keyValue = factory.newKeyValue(publicKey);
```

This creates a key value object containing the specified public key.

**11. Creating a RetrievalMethod**

```java
RetrievalMethod retrievalMethod = factory.newRetrievalMethod(uri);
```

This creates a retrieval method object containing the specified URI.

**12. Creating a X509Data**

```java
X509Data x509Data = factory.newX509Data(Collections.singletonList(certificate));
```

This creates an X509Data object containing the specified certificate.

**13. Creating a PGPData**

```java
PGPData pgpData = factory.newPGPData(pgpKeyId, pgpKeyPacket);
```

This creates a PGPData object containing the specified PGP key ID and PGP key packet.

**14. Creating a SPKIData**

```java
SPKIData spkiData = factory.newSPKIData(spkiBytes);
```

This creates an SPKIData object containing the specified SPKI bytes.

**15. Creating a MgmtData**

```java
MgmtData mgmtData = factory.newMgmtData(mgmtKeyId, mgmtKeyPacket);
```

This creates an MgmtData object containing the specified MGMT key ID and MGMT key packet.

**16. Creating a DSAKeyValue**

```java
DSAKeyValue dsaKeyValue = factory.newDSAKeyValue(p, q, g, y);
```

This creates a DSAKeyValue object containing the specified DSA parameters.

**17. Creating a RSAKeyValue**

```java
RSAKeyValue rsaKeyValue = factory.newRSAKeyValue(modulus, exponent);
```

This creates an RSAKeyValue object containing the specified RSA parameters.

**18. Creating an ECKeyValue**

```java
ECKeyValue ecKeyValue = factory.newECKeyValue(w, curve);
```

This creates an ECKeyValue object containing the specified EC parameters.

**19. Creating a KeyName**

```java
KeyName keyName = factory.newKeyName("keyName");
```

This creates a KeyName object containing the specified key name.

**20. Creating a PGPKeyID**

```java
PGPKeyID pgpKeyId = factory.newPGPKeyID("pgpKeyId");
```

This creates a PGPKeyID object containing the specified PGP key ID.

**21. Creating a URIDereference**

```java
URIDereference uriDereference = factory.newURIDereference("uriDereference");
```

This creates a URIDereference object containing the specified URI.

**22. Creating a C14NParameterSpec**

```java
C14NParameterSpec c14NParameterSpec = factory.newC14NParameterSpec();
```

This creates a C14NParameterSpec object without any parameters.

**23. Creating an ExclusiveC14NParameterSpec**

```java
ExclusiveC14NParameterSpec exclusiveC14NParameterSpec = factory.newExclusiveC14NParameterSpec();
```

This creates an ExclusiveC14NParameterSpec object without any parameters.

**24. Creating an InclusiveC14NParameterSpec**

```java
InclusiveC14NParameterSpec inclusiveC14NParameterSpec = factory.newInclusiveC14NParameterSpec();
```

This creates an InclusiveC14NParameterSpec object without any parameters.

**25. Creating a WithCommentsParameterSpec**

```java
WithCommentsParameterSpec withCommentsParameterSpec = factory.newWithCommentsParameterSpec(true);
```

This creates a WithCommentsParameterSpec object with the specified flag.

**26. Creating an XPathFilter2ParameterSpec**

```java
XPathFilter2ParameterSpec xPathFilter2ParameterSpec = factory.newXPathFilter2ParameterSpec("xpathExpression");
```

This creates an XPathFilter2ParameterSpec object with the specified XPath expression.

**27. Creating an EnvelopedTransformParameterSpec**

```java
EnvelopedTransformParameterSpec envelopedTransformParameterSpec = factory.newEnvelopedTransformParameterSpec();
```

This creates an EnvelopedTransformParameterSpec object without any parameters.

**28. Creating a HMACOutputLengthParameterSpec**

```java
HMACOutputLengthParameterSpec hmacOutputLengthParameterSpec = factory.newHMACOutputLengthParameterSpec(256);
```

This creates an HMACOutputLengthParameterSpec object with the specified output length.

**29. Creating a RSAKeyValueType**

```java
RSAKeyValueType rsaKeyValueType = factory.newRSAKeyValueType(rsaKeyValue);
```

This creates an RSAKeyValueType object containing the specified RSA key value.

**30. Creating a PGPDataType**

```java
PGPDataType pgpDataType = factory.newPGPDataType(pgpData);
```

This creates a PGPDataType object containing the specified PGP data.

**31. Creating a SPKIDataType**

```java
SPKIDataType spkiDataType = factory.newSPKIDataType(spkiData);
```

This creates an SPKIDataType object containing the specified SPKI data.

**32. Creating a MgmtDataType**

```java
MgmtDataType mgmtDataType = factory.newMgmtDataType(mgmtData);
```

This creates an MgmtDataType object containing the specified MGMT data.

**33. Creating a KeyValueType**

```java
KeyValueType keyValueType = factory.newKeyValueType(dsaKeyValue);
```

This creates a KeyValueType object containing the specified DSA key value.

**34. Creating a RetrievalMethodType**

```java
RetrievalMethodType retrievalMethodType = factory.newRetrievalMethodType(retrievalMethod);
```

This creates a RetrievalMethodType object containing the specified retrieval method.

**35. Creating a X509DataType**

```java
X509DataType x509DataType = factory.newX509DataType(x509Data);
```

This creates an X509DataType object containing the specified X509 data.

**36. Creating a ECKeyValueType**