Class JsonWebSignature (1.43.0)

public class JsonWebSignature extends JsonWebToken

JSON Web Signature(JWS).

Sample usage:

public static void printPayload(JsonFactory jsonFactory, String tokenString) throws IOException { JsonWebSignature jws = JsonWebSignature.parse(jsonFactory, tokenString); System.out.println(jws.getPayload()); }

Implementation is not thread-safe.

Inheritance

java.lang.Object > JsonWebToken > JsonWebSignature

Inherited Members

JsonWebToken.getHeader()

JsonWebToken.getPayload()

JsonWebToken.toString()

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Methods

parse(JsonFactory jsonFactory, String tokenString)

public static JsonWebSignature parse(JsonFactory jsonFactory, String tokenString)

Parses the given JWS token string and returns the parsed JsonWebSignature.

Parameters

Name	Description
`jsonFactory`	`JsonFactory` JSON factory
`tokenString`	`String` JWS token string

Returns

Type	Description
`JsonWebSignature`	parsed JWS

Exceptions

Type	Description
`IOException`

parser(JsonFactory jsonFactory)

public static JsonWebSignature.Parser parser(JsonFactory jsonFactory)

Returns a new instance of a JWS parser.

Parameter

Name	Description
`jsonFactory`	`JsonFactory`

Returns

Type	Description
`JsonWebSignature.Parser`

signUsingRsaSha256(PrivateKey privateKey, JsonFactory jsonFactory, JsonWebSignature.Header header, JsonWebToken.Payload payload)

public static String signUsingRsaSha256(PrivateKey privateKey, JsonFactory jsonFactory, JsonWebSignature.Header header, JsonWebToken.Payload payload)

Signs a given JWS header and payload based on the given private key using RSA and SHA-256 as described in JWS using RSA SHA-256.

Parameters

Name	Description
`privateKey`	`PrivateKey` private key
`jsonFactory`	`JsonFactory` JSON factory
`header`	`JsonWebSignature.Header` JWS header
`payload`	`JsonWebToken.Payload` JWS payload

Returns

Type	Description
`String`	signed JWS string

Exceptions

Type	Description
`GeneralSecurityException`
`IOException`

Constructors

JsonWebSignature(JsonWebSignature.Header header, JsonWebToken.Payload payload, byte[] signatureBytes, byte[] signedContentBytes)

public JsonWebSignature(JsonWebSignature.Header header, JsonWebToken.Payload payload, byte[] signatureBytes, byte[] signedContentBytes)

Parameters

Name	Description
`header`	`JsonWebSignature.Header` header
`payload`	`JsonWebToken.Payload` payload
`signatureBytes`	`byte[]` bytes of the signature
`signedContentBytes`	`byte[]` bytes of the signed content

Methods

getHeader()

public JsonWebSignature.Header getHeader()

Returns the header.

Overriding is only supported for the purpose of calling the super implementation and changing the return type, but nothing else.

Returns

Type	Description
`JsonWebSignature.Header`

Overrides

JsonWebToken.getHeader()

getSignatureBytes()

public final byte[] getSignatureBytes()

Returns the bytes of the signature.

Returns

Type	Description
`byte[]`

getSignedContentBytes()

public final byte[] getSignedContentBytes()

Returns the bytes of the signature content.

Returns

Type	Description
`byte[]`

verifySignature()

public final X509Certificate verifySignature()

Beta
Verifies the signature of the content using the certificate chain embedded in the signature.

Currently only "RS256" algorithm is verified, but others may be added in the future. For any other algorithm it returns null.

The certificate chain is verified using the system default trust manager.

The leaf certificate of the certificate chain must be an SSL server certificate.

Returns

Type	Description
`X509Certificate`	the signature certificate if the signature could be verified, null otherwise

Exceptions

Type	Description
`GeneralSecurityException`

verifySignature(PublicKey publicKey)

public final boolean verifySignature(PublicKey publicKey)

Verifies the signature of the content.

Currently only "RS256" and "ES256" algorithms are verified, but others may be added in the future. For any other algorithm it returns false.

Parameter

Name	Description
`publicKey`	`PublicKey` public key

Returns

Type	Description
`boolean`	whether the algorithm is recognized and it is verified

Exceptions

Type	Description
`GeneralSecurityException`

verifySignature(X509TrustManager trustManager)

public final X509Certificate verifySignature(X509TrustManager trustManager)

Beta
Verifies the signature of the content using the certificate chain embedded in the signature.

Currently only "RS256" and "ES256" algorithms are verified, but others may be added in the future. For any other algorithm it returns null.

The leaf certificate of the certificate chain must be an SSL server certificate.

Parameter

Name	Description
`trustManager`	`X509TrustManager` trust manager used to verify the X509 certificate chain embedded in this message

Returns

Type	Description
`X509Certificate`	the signature certificate if the signature could be verified, null otherwise

Exceptions

Type	Description
`GeneralSecurityException`