Answer a new instance of a JWK derived from @anObject
     
     Known @anObject types are:
        <EsString> - json-encoded JWK
        <Stream> - json-encoded JWK
        <KeyedCollection> - jwk properties as a Smalltalk keyed collection
        <OSSslRSAKey> - OpenSSL RSA Key -> JWK
        <OSSslECKey> - OpenSSL EC Key -> JWK
        <OSSslX509> - OpenSSL X.509 Certification -> JWK
        
     Arguments:
        anObject - @see implementors of #asJwk
     Answers:
        <SstJwk> concrete subclass instance
     Raises:
        <SstJwkException> 
            missing or invalid key type 'kty'
            Json reader error
            Invalid argument

No comment

  Answers the intended JOSE algorithm (alg) for this JWK
    
     Example:
        (self algorithm = SstSecurityJoseConstants::JwkAlgHS256)
        @see SstSecurityJoseConstants::JwkAlg* for additional options
        
     Answers:
        <String | UndefinedObject> algorithm string (base64url format) or nil if not specified

  Set the intended JOSE algorithm (alg) for this JWK
     @see RFC7518 (section 7.1) for initial values
     
     Example:
        (self algorithm: SstSecurityJoseConstants::JwkAlgHS256)
        @see SstSecurityJoseConstants::JwkAlg* for additional options
        
     Arguments:
        aValue - <String> algorithm string (base64url format)

  Answer myself since I am a Json Web Key
     
     Answers:
        <SstJwk>

  Answer the JWK Set with this JWK as its only member
     
     Answers:
        <SstJwkSet>

  Answer the public key representation of this web key.
     By default this is nil
     
     Answers:
        <UndefinedObject>

  Ensure that the key id 'kid' is set.
     Do nothing if already set, otherwise generate and set a new id using the thumbprint value

  Answers true if this JWK contains private parameters, false otherwise
     
     Answers:
        <Boolean>

  Answers the id (kid) of this JWK.
     This can be used to match a specific key such as a key
     within a key set or corespond to the key id from a JWE/JWS
     header.
    
     Example:
        self keyId = '1'
        
     Answers:
        <String | UndefinedObject> id or nil if unspecified

  Set the id (kid) of this JWK.
     This can be used to match a specific key such as a key
     within a key set or corespond to the key id from a JWE/JWS
     header.
     @see RFC7517 (section 4.5) for additional info
     
     Example:
        self keyId: '1'
        
     Arguments:
        aValue - <String> id str

  Answers the operations (key_ops) for this JWK
    
     Example:
        (self keyOperations includes: SstSecurityJoseConstants::JwkKeyOpsSign).
        @see SstSecurityJoseConstants::JwkKeyOps* for additional options
        
     Answers:
        <Set> set of <String> key operations.  This will be empty if unspecified

  Sets the operations (key_ops) for this JWK
     @see RFC7517 (section 8.3) for initial values
     
     Example:
        (self keyOperations: (Set with: SstSecurityJoseConstants::JwkKeyOpsSign).
        @see SstSecurityJoseConstants::JwkKeyOps* for additional options
        
     Arguments:
        aCollection - <Collection> of <String> key operations

  Answers the type (kty) of this JWK
    
     Example:
        (self keyType = SstSecurityJoseConstants::JwkKeyTypeEC) |
            (self keyType = SstSecurityJoseConstants::JwkKeyTypeRSA) |
                (self keyType = SstSecurityJoseConstants::JwkKeyTypeOCTET)
        
     Answers:
        <String>

  Set the type (kty) of this JWK     
     @see RFC7518 (section 6.1) for initial values
    
     Example:
        (self keyType: SstSecurityJoseConstants::JwkKeyTypeRSA) |
            (self keyType: SstSecurityJoseConstants::JwkKeyTypeEC) |
                (self keyType: SstSecurityJoseConstants::JwkKeyTypeOCTET)
        
     Arguments:
        aValue - <String>

  Answers the use (use) of this JWK
    
     Example:
        (self keyUse = SstSecurityJoseConstants::JwkKeyUseSign) |
            (self keyUse = SstSecurityJoseConstants::JwkKeyUseEncrypt)
        
     Answers:
        <String | UndefinedObject> use string or nil if not specified or if the key
                                               is intended for signing and encryption

  Set the use (use) of this JWK
     @see RFC7517 (section 8.2) for initial values
    
     Example:
        (self keyUse: SstSecurityJoseConstants::JwkKeyUseEncrypt) |
            (self keyUse: SstSecurityJoseConstants::JwkKeyUseSign)
        
     Arguments:
        aValue - <String>

  Sign the json web signature object using this JWK and default algorithm.

  Answers the computed thumbprint of this JWK using the default digest.
     @see RFC 7638 for more information on JSON Web Key (JWK) Thumprint
     
     Answers:
        <String>

  Set the the X.509 certificate SHA-1 thumbprint (x5t#S256) for this JWK
     This is a base64url-encoded SHA-1 thumbprint (a.k.a. digest)
     of the DER encoding of an X.509 certificate
     @see RFC7517 (section 4.8) for additional info
     
     DEPRECATION WARNING:
     Use x509ThumbprintSHA256 due to outdated security of SHA-1
     
     Arguments:
        aCollection - <Collection> of <String>

  Set the the X.509 certificate SHA-1 thumbprint (x5t#S256) for this JWK
     This is a base64url-encoded SHA-1 thumbprint (a.k.a. digest)
     of the DER encoding of an X.509 certificate
     @see RFC7517 (section 4.8) for additional info
     
     DEPRECATION WARNING:
     Use x509ThumbprintSHA256 due to outdated security of SHA-1
     
     Arguments:
        aCollection - <Collection> of <String>

  Answers the X.509 certificate SHA-1 thumbprint (x5t) for this JWK
     This is base64url encoded
        
     Answers:
        <String | ByteArray | UndefinedObject> x509 cert thumbprint or nil if unspecified

  Set the the X.509 certificate SHA-1 thumbprint (x5t#S256) for this JWK
     This is a base64url-encoded SHA-1 thumbprint (a.k.a. digest)
     of the DER encoding of an X.509 certificate
     @see RFC7517 (section 4.8) for additional info
     
     DEPRECATION WARNING:
     Use x509ThumbprintSHA256 due to outdated security of SHA-1
     
     Arguments:
        aValue - <String | ByteArray>

  Answers the X.509 certificate SHA-256 thumbprint (x5t#256) for this JWK
     This is base64url encoded
        
     Answers:
        <String | ByteArray | UndefinedObject> x509 cert thumbprint or nil if unspecified

  Set the the X.509 certificate SHA-256 thumbprint (x5t#S256) for this JWK
     This is a base64url-encoded SHA-256 thumbprint (a.k.a. digest)
     of the DER encoding of an X.509 certificate
     @see RFC7517 (section 4.9) for additional info
        
     Arguments:
        aValue - <String | ByteArray> id str