Module com.webauthn4j.core

Package com.webauthn4j.converter

Class AttestedCredentialDataConverter

java.lang.Object

com.webauthn4j.converter.AttestedCredentialDataConverter

public class AttestedCredentialDataConverter
extends Object

A converter class that handles conversion operations for WebAuthn Attested Credential Data. This class provides functionality to convert between AttestedCredentialData objects and their byte array representations, as well as extracting credential IDs from attested credential data. The class uses CBOR (Concise Binary Object Representation) for data serialization and handles the WebAuthn attestation data format which includes AAGUID, credential ID, and credential public key.

See Also:

• AttestedCredentialData
• COSEKey
• CborConverter

Constructor Summary

Constructors

Constructor	Description
AttestedCredentialDataConverter(@NotNull ObjectConverter objectConverter)	Constructor for AttestedCredentialDataConverter

Method Summary

Modifier and Type	Method	Description
@NotNull AttestedCredentialData	convert(@org.jetbrains.annotations.NotNull byte[] attestedCredentialData)	Converts a byte array containing attested credential data to an AttestedCredentialData object.
@org.jetbrains.annotations.NotNull byte[]	convert(@NotNull AttestedCredentialData attestationData)	Converts an AttestedCredentialData object to its byte array representation.
@NotNull AttestedCredentialData	convert(@NotNull ByteBuffer attestedCredentialData)	Converts a ByteBuffer containing attested credential data to an AttestedCredentialData object.
@org.jetbrains.annotations.NotNull byte[]	extractCredentialId(@org.jetbrains.annotations.NotNull byte[] attestedCredentialData)	Extract credentialId byte array from a attestedCredentialData byte array.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AttestedCredentialDataConverter

public AttestedCredentialDataConverter(@NotNull
 @NotNull ObjectConverter objectConverter)

Constructor for AttestedCredentialDataConverter

Parameters:

objectConverter - the object converter to use for CBOR serialization/deserialization

Throws:

IllegalArgumentException - if objectConverter is null

Method Details

convert

@NotNull
public @org.jetbrains.annotations.NotNull byte[] convert(@NotNull
 @NotNull AttestedCredentialData attestationData)

Converts an AttestedCredentialData object to its byte array representation.

Parameters:

attestationData - the AttestedCredentialData to convert

Returns:

byte array representation of the attestation data

convert

@NotNull
public @NotNull AttestedCredentialData convert(@NotNull
 @NotNull ByteBuffer attestedCredentialData)

Converts a ByteBuffer containing attested credential data to an AttestedCredentialData object.

Parameters:

attestedCredentialData - ByteBuffer containing the credential data

Returns:

converted AttestedCredentialData object

convert

@NotNull
public @NotNull AttestedCredentialData convert(@NotNull
 @org.jetbrains.annotations.NotNull byte[] attestedCredentialData)

Converts a byte array containing attested credential data to an AttestedCredentialData object.

Parameters:

attestedCredentialData - byte array containing the credential data

Returns:

converted AttestedCredentialData object

extractCredentialId

@NotNull
public @org.jetbrains.annotations.NotNull byte[] extractCredentialId(@NotNull
 @org.jetbrains.annotations.NotNull byte[] attestedCredentialData)

Extract credentialId byte array from a attestedCredentialData byte array.

Parameters:

attestedCredentialData - the attestedCredentialData byte array

Returns:

the extracted credentialId byte array