Added in API level 1

Summary: Ctors | Methods | Inherited Methods

X509CertSelector

public class X509CertSelector
extends Object implements CertSelector

java.lang.Object
↳	java.security.cert.X509CertSelector

---

A CertSelector that selects X509Certificates that match all specified criteria. This class is particularly useful when selecting certificates from a CertStore to build a PKIX-compliant certification path.

When first constructed, an X509CertSelector has no criteria enabled and each of the get methods return a default value (null, or -1 for the getBasicConstraints method). Therefore, the match method would return true for any X509Certificate. Typically, several criteria are enabled (by calling setIssuer or setKeyUsage, for instance) and then the X509CertSelector is passed to CertStore.getCertificates or some similar method.

Several criteria can be enabled (by calling setIssuer and setSerialNumber, for example) such that the match method usually uniquely matches a single X509Certificate. We say usually, since it is possible for two issuing CAs to have the same distinguished name and each issue a certificate with the same serial number. Other unique combinations include the issuer, subject, subjectKeyIdentifier and/or the subjectPublicKey criteria.

Please refer to RFC 5280: Internet X.509 Public Key Infrastructure Certificate and CRL Profile for definitions of the X.509 certificate extensions mentioned below.

Concurrent Access

Unless otherwise specified, the methods defined in this class are not thread-safe. Multiple threads that need to access a single object concurrently should synchronize amongst themselves and provide the necessary locking. Multiple threads each manipulating separate objects need not synchronize.

See also:

• CertSelector
• X509Certificate

Summary

Public constructors
X509CertSelector() Creates an X509CertSelector.

Public methods
void	addPathToName(int type, String name) Adds a name to the pathToNames criterion.
void	addPathToName(int type, byte[] name) Adds a name to the pathToNames criterion.
void	addSubjectAlternativeName(int type, String name) Adds a name to the subjectAlternativeNames criterion.
void	addSubjectAlternativeName(int type, byte[] name) Adds a name to the subjectAlternativeNames criterion.
Object	clone() Returns a copy of this object.
byte[]	getAuthorityKeyIdentifier() Returns the authorityKeyIdentifier criterion.
int	getBasicConstraints() Returns the basic constraints constraint.
X509Certificate	getCertificate() Returns the certificateEquals criterion.
Date	getCertificateValid() Returns the certificateValid criterion.
Set<String>	getExtendedKeyUsage() Returns the extendedKeyUsage criterion.
X500Principal	getIssuer() Returns the issuer criterion as an X500Principal.
byte[]	getIssuerAsBytes() Returns the issuer criterion as a byte array.
String	getIssuerAsString() Denigrated, use getIssuer() or getIssuerAsBytes() instead.
boolean[]	getKeyUsage() Returns the keyUsage criterion.
boolean	getMatchAllSubjectAltNames() Indicates if the X509Certificate must contain all or at least one of the subjectAlternativeNames specified in the setSubjectAlternativeNames or addSubjectAlternativeName methods.
byte[]	getNameConstraints() Returns the name constraints criterion.
Collection<List<?>>	getPathToNames() Returns a copy of the pathToNames criterion.
Set<String>	getPolicy() Returns the policy criterion.
Date	getPrivateKeyValid() Returns the privateKeyValid criterion.
BigInteger	getSerialNumber() Returns the serialNumber criterion.
X500Principal	getSubject() Returns the subject criterion as an X500Principal.
Collection<List<?>>	getSubjectAlternativeNames() Returns a copy of the subjectAlternativeNames criterion.
byte[]	getSubjectAsBytes() Returns the subject criterion as a byte array.
String	getSubjectAsString() Denigrated, use getSubject() or getSubjectAsBytes() instead.
byte[]	getSubjectKeyIdentifier() Returns the subjectKeyIdentifier criterion.
PublicKey	getSubjectPublicKey() Returns the subjectPublicKey criterion.
String	getSubjectPublicKeyAlgID() Returns the subjectPublicKeyAlgID criterion.
boolean	match(Certificate cert) Decides whether a Certificate should be selected.
void	setAuthorityKeyIdentifier(byte[] authorityKeyID) Sets the authorityKeyIdentifier criterion.
void	setBasicConstraints(int minMaxPathLen) Sets the basic constraints constraint.
void	setCertificate(X509Certificate cert) Sets the certificateEquals criterion.
void	setCertificateValid(Date certValid) Sets the certificateValid criterion.
void	setExtendedKeyUsage(Set<String> keyPurposeSet) Sets the extendedKeyUsage criterion.
void	setIssuer(byte[] issuerDN) Sets the issuer criterion.
void	setIssuer(X500Principal issuer) Sets the issuer criterion.
void	setIssuer(String issuerDN) Denigrated, use setIssuer(javax.security.auth.x500.X500Principal) or setIssuer(byte[]) instead.
void	setKeyUsage(boolean[] keyUsage) Sets the keyUsage criterion.
void	setMatchAllSubjectAltNames(boolean matchAllNames) Enables/disables matching all of the subjectAlternativeNames specified in the setSubjectAlternativeNames or addSubjectAlternativeName methods.
void	setNameConstraints(byte[] bytes) Sets the name constraints criterion.
void	setPathToNames(Collection<List<?>> names) Sets the pathToNames criterion.
void	setPolicy(Set<String> certPolicySet) Sets the policy constraint.
void	setPrivateKeyValid(Date privateKeyValid) Sets the privateKeyValid criterion.
void	setSerialNumber(BigInteger serial) Sets the serialNumber criterion.
void	setSubject(X500Principal subject) Sets the subject criterion.
void	setSubject(byte[] subjectDN) Sets the subject criterion.
void	setSubject(String subjectDN) Denigrated, use setSubject(javax.security.auth.x500.X500Principal) or setSubject(byte[]) instead.
void	setSubjectAlternativeNames(Collection<List<?>> names) Sets the subjectAlternativeNames criterion.
void	setSubjectKeyIdentifier(byte[] subjectKeyID) Sets the subjectKeyIdentifier criterion.
void	setSubjectPublicKey(byte[] key) Sets the subjectPublicKey criterion.
void	setSubjectPublicKey(PublicKey key) Sets the subjectPublicKey criterion.
void	setSubjectPublicKeyAlgID(String oid) Sets the subjectPublicKeyAlgID criterion.
String	toString() Return a printable representation of the CertSelector.

Inherited methods
From class java.lang.Object Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object. int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait(long timeoutMillis, int nanos) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait(long timeoutMillis) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
From interface java.security.cert.CertSelector abstract Object clone() Makes a copy of this CertSelector. abstract boolean match(Certificate cert) Decides whether a Certificate should be selected.

Public constructors

X509CertSelector

Added in API level 1

public X509CertSelector ()

Creates an X509CertSelector. Initially, no criteria are set so any X509Certificate will match.

Public methods

addPathToName

Added in API level 1

public void addPathToName (int type, 
                String name)

Adds a name to the pathToNames criterion. The X509Certificate must not include name constraints that would prohibit building a path to the specified name.

This method allows the caller to add a name to the set of names which the X509Certificates's name constraints must permit. The specified name is added to any previous value for the pathToNames criterion. If the name is a duplicate, it may be ignored.

The name is provided in string format. RFC 822, DNS, and URI names use the well-established string formats for those types (subject to the restrictions included in RFC 5280). IPv4 address names are supplied using dotted quad notation. OID address names are represented as a series of nonnegative integers separated by periods. And directory names (distinguished names) are supplied in RFC 2253 format. No standard string format is defined for otherNames, X.400 names, EDI party names, IPv6 address names, or any other type of names. They should be specified using the addPathToName(int type, byte [] name) method.

Note: for distinguished names, use addPathToName(int, byte[]) instead. This method should not be relied on as it can fail to match some certificates because of a loss of encoding information in the RFC 2253 String form of some distinguished names.

Parameters
type	int: the name type (0-8, as specified in RFC 5280, section 4.2.1.6)
name	String: the name in string form

Throws
IOException	if a parsing error occurs

addPathToName

Added in API level 1

public void addPathToName (int type, 
                byte[] name)

Adds a name to the pathToNames criterion. The X509Certificate must not include name constraints that would prohibit building a path to the specified name.

This method allows the caller to add a name to the set of names which the X509Certificates's name constraints must permit. The specified name is added to any previous value for the pathToNames criterion. If the name is a duplicate, it may be ignored.

The name is provided as a byte array. This byte array should contain the DER encoded name, as it would appear in the GeneralName structure defined in RFC 5280 and X.509. The ASN.1 definition of this structure appears in the documentation for addSubjectAlternativeName(int type, byte [] name).

Note that the byte array supplied here is cloned to protect against subsequent modifications.

Parameters
type	int: the name type (0-8, as specified in RFC 5280, section 4.2.1.6)
name	byte: a byte array containing the name in ASN.1 DER encoded form

Throws
IOException	if a parsing error occurs

addSubjectAlternativeName

Added in API level 1

public void addSubjectAlternativeName (int type, 
                String name)

Adds a name to the subjectAlternativeNames criterion. The X509Certificate must contain all or at least one of the specified subjectAlternativeNames, depending on the value of the matchAllNames flag (see setMatchAllSubjectAltNames).

This method allows the caller to add a name to the set of subject alternative names. The specified name is added to any previous value for the subjectAlternativeNames criterion. If the specified name is a duplicate, it may be ignored.

The name is provided in string format. RFC 822, DNS, and URI names use the well-established string formats for those types (subject to the restrictions included in RFC 5280). IPv4 address names are supplied using dotted quad notation. OID address names are represented as a series of nonnegative integers separated by periods. And directory names (distinguished names) are supplied in RFC 2253 format. No standard string format is defined for otherNames, X.400 names, EDI party names, IPv6 address names, or any other type of names. They should be specified using the addSubjectAlternativeName(int type, byte [] name) method.

Note: for distinguished names, use addSubjectAlternativeName(int, byte[]) instead. This method should not be relied on as it can fail to match some certificates because of a loss of encoding information in the RFC 2253 String form of some distinguished names.

Parameters
type	int: the name type (0-8, as specified in RFC 5280, section 4.2.1.6)
name	String: the name in string form (not null)

Throws
IOException	if a parsing error occurs

addSubjectAlternativeName

Added in API level 1

public void addSubjectAlternativeName (int type, 
                byte[] name)

Adds a name to the subjectAlternativeNames criterion. The X509Certificate must contain all or at least one of the specified subjectAlternativeNames, depending on the value of the matchAllNames flag (see setMatchAllSubjectAltNames).

This method allows the caller to add a name to the set of subject alternative names. The specified name is added to any previous value for the subjectAlternativeNames criterion. If the specified name is a duplicate, it may be ignored.

The name is provided as a byte array. This byte array should contain the DER encoded name, as it would appear in the GeneralName structure defined in RFC 5280 and X.509. The encoded byte array should only contain the encoded value of the name, and should not include the tag associated with the name in the GeneralName structure. The ASN.1 definition of this structure appears below.

GeneralName ::= CHOICE {
       otherName                       [0]     OtherName,
       rfc822Name                      [1]     IA5String,
       dNSName                         [2]     IA5String,
       x400Address                     [3]     ORAddress,
       directoryName                   [4]     Name,
       ediPartyName                    [5]     EDIPartyName,
       uniformResourceIdentifier       [6]     IA5String,
       iPAddress                       [7]     OCTET STRING,
       registeredID                    [8]     OBJECT IDENTIFIER}
 

Note that the byte array supplied here is cloned to protect against subsequent modifications.

Parameters
type	int: the name type (0-8, as listed above)
name	byte: a byte array containing the name in ASN.1 DER encoded form

Throws
IOException	if a parsing error occurs

clone

Added in API level 1

public Object clone ()

Returns a copy of this object.

Returns
Object	the copy

getAuthorityKeyIdentifier

Added in API level 1

public byte[] getAuthorityKeyIdentifier ()

Returns the authorityKeyIdentifier criterion. The X509Certificate must contain a AuthorityKeyIdentifier extension with the specified value. If null, no authorityKeyIdentifier check will be done.

Note that the byte array returned is cloned to protect against subsequent modifications.

Returns
byte[]	the key identifier (or null)

See also:

• setAuthorityKeyIdentifier(byte)

getBasicConstraints

Added in API level 1

public int getBasicConstraints ()

Returns the basic constraints constraint. If the value is greater than or equal to zero, the X509Certificates must include a basicConstraints extension with a pathLen of at least this value. If the value is -2, only end-entity certificates are accepted. If the value is -1, no basicConstraints check is done.

Returns
int	the value for the basic constraints constraint

See also:

• setBasicConstraints(int)

getCertificate

Added in API level 1

public X509Certificate getCertificate ()

Returns the certificateEquals criterion. The specified X509Certificate must be equal to the X509Certificate passed to the match method. If null, this check is not applied.

Returns
X509Certificate	the X509Certificate to match (or null)

See also:

• setCertificate(X509Certificate)

getCertificateValid

Added in API level 1

public Date getCertificateValid ()

Returns the certificateValid criterion. The specified date must fall within the certificate validity period for the X509Certificate. If null, no certificateValid check will be done.

Note that the Date returned is cloned to protect against subsequent modifications.

Returns
Date	the Date to check (or null)

See also:

• setCertificateValid(Date)

getExtendedKeyUsage

Added in API level 1

public Set<String> getExtendedKeyUsage ()

Returns the extendedKeyUsage criterion. The X509Certificate must allow the specified key purposes in its extended key usage extension. If the keyPurposeSet returned is empty or null, no extendedKeyUsage check will be done. Note that an X509Certificate that has no extendedKeyUsage extension implicitly allows all key purposes.

Returns
Set<String>	an immutable Set of key purpose OIDs in string format (or null)

See also:

• setExtendedKeyUsage(Set)

getIssuer

Added in API level 1

public X500Principal getIssuer ()

Returns the issuer criterion as an X500Principal. This distinguished name must match the issuer distinguished name in the X509Certificate. If null, the issuer criterion is disabled and any issuer distinguished name will do.

Returns
X500Principal	the required issuer distinguished name as X500Principal (or null)

getIssuerAsBytes

Added in API level 1

public byte[] getIssuerAsBytes ()

Returns the issuer criterion as a byte array. This distinguished name must match the issuer distinguished name in the X509Certificate. If null, the issuer criterion is disabled and any issuer distinguished name will do.

If the value returned is not null, it is a byte array containing a single DER encoded distinguished name, as defined in X.501. The ASN.1 notation for this structure is supplied in the documentation for setIssuer(byte [] issuerDN).

Note that the byte array returned is cloned to protect against subsequent modifications.

Returns
byte[]	a byte array containing the required issuer distinguished name in ASN.1 DER format (or null)

Throws
IOException	if an encoding error occurs

getIssuerAsString

Added in API level 1

public String getIssuerAsString ()

Denigrated, use getIssuer() or getIssuerAsBytes() instead. This method should not be relied on as it can fail to match some certificates because of a loss of encoding information in the RFC 2253 String form of some distinguished names.

Returns the issuer criterion as a String. This distinguished name must match the issuer distinguished name in the X509Certificate. If null, the issuer criterion is disabled and any issuer distinguished name will do.

If the value returned is not null, it is a distinguished name, in RFC 2253 format.

Returns
String	the required issuer distinguished name in RFC 2253 format (or null)

getKeyUsage

Added in API level 1

public boolean[] getKeyUsage ()

Returns the keyUsage criterion. The X509Certificate must allow the specified keyUsage values. If null, no keyUsage check will be done.

Note that the boolean array returned is cloned to protect against subsequent modifications.

Returns
boolean[]	a boolean array in the same format as the boolean array returned by X509Certificate.getKeyUsage(). Or null.

See also:

• setKeyUsage(boolean)

getMatchAllSubjectAltNames

Added in API level 1

public boolean getMatchAllSubjectAltNames ()

Indicates if the X509Certificate must contain all or at least one of the subjectAlternativeNames specified in the setSubjectAlternativeNames or addSubjectAlternativeName methods. If true, the X509Certificate must contain all of the specified subject alternative names. If false, the X509Certificate must contain at least one of the specified subject alternative names.

Returns
boolean	true if the flag is enabled; false if the flag is disabled. The flag is true by default.

See also:

• setMatchAllSubjectAltNames(boolean)

getNameConstraints

Added in API level 1

public byte[] getNameConstraints ()

Returns the name constraints criterion. The X509Certificate must have subject and subject alternative names that meet the specified name constraints.

The name constraints are returned as a byte array. This byte array contains the DER encoded form of the name constraints, as they would appear in the NameConstraints structure defined in RFC 5280 and X.509. The ASN.1 notation for this structure is supplied in the documentation for setNameConstraints(byte [] bytes).

Note that the byte array returned is cloned to protect against subsequent modifications.

Returns
byte[]	a byte array containing the ASN.1 DER encoding of a NameConstraints extension used for checking name constraints. null if no name constraints check will be performed.

See also:

• setNameConstraints(byte)

getPathToNames

Added in API level 1

public Collection<List<?>> getPathToNames ()

Returns a copy of the pathToNames criterion. The X509Certificate must not include name constraints that would prohibit building a path to the specified names. If the value returned is null, no pathToNames check will be performed.

If the value returned is not null, it is a Collection with one entry for each name to be included in the pathToNames criterion. Each entry is a List whose first entry is an Integer (the name type, 0-8) and whose second entry is a String or a byte array (the name, in string or ASN.1 DER encoded form, respectively). There can be multiple names of the same type. Note that the Collection returned may contain duplicate names (same name and name type).

Each name in the Collection may be specified either as a String or as an ASN.1 encoded byte array. For more details about the formats used, see addPathToName(int type, String name) and addPathToName(int type, byte [] name).

Note that a deep copy is performed on the Collection to protect against subsequent modifications.

Returns
Collection<List<?>>	a Collection of names (or null)

See also:

• setPathToNames(Collection)

getPolicy

Added in API level 1

public Set<String> getPolicy ()

Returns the policy criterion. The X509Certificate must include at least one of the specified policies in its certificate policies extension. If the Set returned is empty, then the X509Certificate must include at least some specified policy in its certificate policies extension. If the Set returned is null, no policy check will be performed.

Returns
Set<String>	an immutable Set of certificate policy OIDs in string format (or null)

See also:

• setPolicy(Set)

getPrivateKeyValid

Added in API level 1

public Date getPrivateKeyValid ()

Returns the privateKeyValid criterion. The specified date must fall within the private key validity period for the X509Certificate. If null, no privateKeyValid check will be done.

Note that the Date returned is cloned to protect against subsequent modifications.

Returns
Date	the Date to check (or null)

See also:

• setPrivateKeyValid(Date)

getSerialNumber

Added in API level 1

public BigInteger getSerialNumber ()

Returns the serialNumber criterion. The specified serial number must match the certificate serial number in the X509Certificate. If null, any certificate serial number will do.

Returns
BigInteger	the certificate serial number to match (or null)

See also:

• setSerialNumber(BigInteger)

getSubject

Added in API level 1

public X500Principal getSubject ()

Returns the subject criterion as an X500Principal. This distinguished name must match the subject distinguished name in the X509Certificate. If null, the subject criterion is disabled and any subject distinguished name will do.

Returns
X500Principal	the required subject distinguished name as X500Principal (or null)

getSubjectAlternativeNames

Added in API level 1

public Collection<List<?>> getSubjectAlternativeNames ()

Returns a copy of the subjectAlternativeNames criterion. The X509Certificate must contain all or at least one of the specified subjectAlternativeNames, depending on the value of the matchAllNames flag (see getMatchAllSubjectAltNames). If the value returned is null, no subjectAlternativeNames check will be performed.

If the value returned is not null, it is a Collection with one entry for each name to be included in the subject alternative name criterion. Each entry is a List whose first entry is an Integer (the name type, 0-8) and whose second entry is a String or a byte array (the name, in string or ASN.1 DER encoded form, respectively). There can be multiple names of the same type. Note that the Collection returned may contain duplicate names (same name and name type).

Each subject alternative name in the Collection may be specified either as a String or as an ASN.1 encoded byte array. For more details about the formats used, see addSubjectAlternativeName(int type, String name) and addSubjectAlternativeName(int type, byte [] name).

Note that a deep copy is performed on the Collection to protect against subsequent modifications.

Returns
Collection<List<?>>	a Collection of names (or null)

See also:

• setSubjectAlternativeNames(Collection)

getSubjectAsBytes

Added in API level 1

public byte[] getSubjectAsBytes ()

Returns the subject criterion as a byte array. This distinguished name must match the subject distinguished name in the X509Certificate. If null, the subject criterion is disabled and any subject distinguished name will do.

If the value returned is not null, it is a byte array containing a single DER encoded distinguished name, as defined in X.501. The ASN.1 notation for this structure is supplied in the documentation for setSubject(byte [] subjectDN).

Note that the byte array returned is cloned to protect against subsequent modifications.

Returns
byte[]	a byte array containing the required subject distinguished name in ASN.1 DER format (or null)

Throws
IOException	if an encoding error occurs

getSubjectAsString

Added in API level 1

public String getSubjectAsString ()

Denigrated, use getSubject() or getSubjectAsBytes() instead. This method should not be relied on as it can fail to match some certificates because of a loss of encoding information in the RFC 2253 String form of some distinguished names.

Returns the subject criterion as a String. This distinguished name must match the subject distinguished name in the X509Certificate. If null, the subject criterion is disabled and any subject distinguished name will do.

If the value returned is not null, it is a distinguished name, in RFC 2253 format.

Returns
String	the required subject distinguished name in RFC 2253 format (or null)

getSubjectKeyIdentifier

Added in API level 1

public byte[] getSubjectKeyIdentifier ()

Returns the subjectKeyIdentifier criterion. The X509Certificate must contain a SubjectKeyIdentifier extension with the specified value. If null, no subjectKeyIdentifier check will be done.

Note that the byte array returned is cloned to protect against subsequent modifications.

Returns
byte[]	the key identifier (or null)

See also:

• setSubjectKeyIdentifier(byte)

getSubjectPublicKey

Added in API level 1

public PublicKey getSubjectPublicKey ()

Returns the subjectPublicKey criterion. The X509Certificate must contain the specified subject public key. If null, no subjectPublicKey check will be done.

Returns
PublicKey	the subject public key to check for (or null)

See also:

• setSubjectPublicKey(byte)

getSubjectPublicKeyAlgID

Added in API level 1

public String getSubjectPublicKeyAlgID ()

Returns the subjectPublicKeyAlgID criterion. The X509Certificate must contain a subject public key with the specified algorithm. If null, no subjectPublicKeyAlgID check will be done.

Returns
String	the object identifier (OID) of the signature algorithm to check for (or null). An OID is represented by a set of nonnegative integers separated by periods.

See also:

• setSubjectPublicKeyAlgID(String)

match

Added in API level 1

public boolean match (Certificate cert)

Decides whether a Certificate should be selected.

Parameters
cert	Certificate: the Certificate to be checked

Returns
boolean	true if the Certificate should be selected, false otherwise

setAuthorityKeyIdentifier

Added in API level 1

public void setAuthorityKeyIdentifier (byte[] authorityKeyID)

Sets the authorityKeyIdentifier criterion. The X509Certificate must contain an AuthorityKeyIdentifier extension for which the contents of the extension value matches the specified criterion value. If the criterion value is null, no authorityKeyIdentifier check will be done.

If authorityKeyID is not null, it should contain a single DER encoded value corresponding to the contents of the extension value (not including the object identifier, criticality setting, and encapsulating OCTET STRING) for an AuthorityKeyIdentifier extension. The ASN.1 notation for this structure follows.

AuthorityKeyIdentifier ::= SEQUENCE {
    keyIdentifier             [0] KeyIdentifier           OPTIONAL,
    authorityCertIssuer       [1] GeneralNames            OPTIONAL,
    authorityCertSerialNumber [2] CertificateSerialNumber OPTIONAL  }

 KeyIdentifier ::= OCTET STRING
 

Authority key identifiers are not parsed by the X509CertSelector. Instead, the values are compared using a byte-by-byte comparison.

When the keyIdentifier field of AuthorityKeyIdentifier is populated, the value is usually taken from the SubjectKeyIdentifier extension in the issuer's certificate. Note, however, that the result of X509Certificate.getExtensionValue(<SubjectKeyIdentifier Object Identifier>) on the issuer's certificate may NOT be used directly as the input to setAuthorityKeyIdentifier. This is because the SubjectKeyIdentifier contains only a KeyIdentifier OCTET STRING, and not a SEQUENCE of KeyIdentifier, GeneralNames, and CertificateSerialNumber. In order to use the extension value of the issuer certificate's SubjectKeyIdentifier extension, it will be necessary to extract the value of the embedded KeyIdentifier OCTET STRING, then DER encode this OCTET STRING inside a SEQUENCE. For more details on SubjectKeyIdentifier, see setSubjectKeyIdentifier(byte[]).

Note also that the byte array supplied here is cloned to protect against subsequent modifications.

Parameters
authorityKeyID	byte: the authority key identifier (or null)

See also:

• getAuthorityKeyIdentifier()

setBasicConstraints

Added in API level 1

public void setBasicConstraints (int minMaxPathLen)

Sets the basic constraints constraint. If the value is greater than or equal to zero, X509Certificates must include a basicConstraints extension with a pathLen of at least this value. If the value is -2, only end-entity certificates are accepted. If the value is -1, no check is done.

This constraint is useful when building a certification path forward (from the target toward the trust anchor. If a partial path has been built, any candidate certificate must have a maxPathLen value greater than or equal to the number of certificates in the partial path.

Parameters
minMaxPathLen	int: the value for the basic constraints constraint

Throws
IllegalArgumentException	if the value is less than -2

See also:

• getBasicConstraints()

setCertificate

Added in API level 1

public void setCertificate (X509Certificate cert)

Sets the certificateEquals criterion. The specified X509Certificate must be equal to the X509Certificate passed to the match method. If null, then this check is not applied.

This method is particularly useful when it is necessary to match a single certificate. Although other criteria can be specified in conjunction with the certificateEquals criterion, it is usually not practical or necessary.

Parameters
cert	X509Certificate: the X509Certificate to match (or null)

See also:

• getCertificate()

setCertificateValid

Added in API level 1

public void setCertificateValid (Date certValid)

Sets the certificateValid criterion. The specified date must fall within the certificate validity period for the X509Certificate. If null, no certificateValid check will be done.

Note that the Date supplied here is cloned to protect against subsequent modifications.

Parameters
certValid	Date: the Date to check (or null)

See also:

• getCertificateValid()

setExtendedKeyUsage

Added in API level 1

public void setExtendedKeyUsage (Set<String> keyPurposeSet)

Sets the extendedKeyUsage criterion. The X509Certificate must allow the specified key purposes in its extended key usage extension. If keyPurposeSet is empty or null, no extendedKeyUsage check will be done. Note that an X509Certificate that has no extendedKeyUsage extension implicitly allows all key purposes.

Note that the Set is cloned to protect against subsequent modifications.

Parameters
keyPurposeSet	Set: a Set of key purpose OIDs in string format (or null). Each OID is represented by a set of nonnegative integers separated by periods.

Throws
IOException	if the OID is invalid, such as the first component being not 0, 1 or 2 or the second component being greater than 39.

See also:

• getExtendedKeyUsage()

setIssuer

Added in API level 1

public void setIssuer (byte[] issuerDN)

Sets the issuer criterion. The specified distinguished name must match the issuer distinguished name in the X509Certificate. If null is specified, the issuer criterion is disabled and any issuer distinguished name will do.

If issuerDN is not null, it should contain a single DER encoded distinguished name, as defined in X.501. The ASN.1 notation for this structure is as follows.

Name ::= CHOICE {
   RDNSequence }

 RDNSequence ::= SEQUENCE OF RelativeDistinguishedName

 RelativeDistinguishedName ::=
   SET SIZE (1 .. MAX) OF AttributeTypeAndValue

 AttributeTypeAndValue ::= SEQUENCE {
   type     AttributeType,
   value    AttributeValue }

 AttributeType ::= OBJECT IDENTIFIER

 AttributeValue ::= ANY DEFINED BY AttributeType
 ....
 DirectoryString ::= CHOICE {
       teletexString           TeletexString (SIZE (1..MAX)),
       printableString         PrintableString (SIZE (1..MAX)),
       universalString         UniversalString (SIZE (1..MAX)),
       utf8String              UTF8String (SIZE (1.. MAX)),
       bmpString               BMPString (SIZE (1..MAX)) }
 

Note that the byte array specified here is cloned to protect against subsequent modifications.

Parameters
issuerDN	byte: a byte array containing the distinguished name in ASN.1 DER encoded form (or null)

Throws
IOException	if an encoding error occurs (incorrect form for DN)

setIssuer

Added in API level 1

public void setIssuer (X500Principal issuer)

Sets the issuer criterion. The specified distinguished name must match the issuer distinguished name in the X509Certificate. If null, any issuer distinguished name will do.

Parameters
issuer	X500Principal: a distinguished name as X500Principal (or null)

setIssuer

Added in API level 1

public void setIssuer (String issuerDN)

Denigrated, use setIssuer(javax.security.auth.x500.X500Principal) or setIssuer(byte[]) instead. This method should not be relied on as it can fail to match some certificates because of a loss of encoding information in the RFC 2253 String form of some distinguished names.

Sets the issuer criterion. The specified distinguished name must match the issuer distinguished name in the X509Certificate. If null, any issuer distinguished name will do.

If issuerDN is not null, it should contain a distinguished name, in RFC 2253 format.

Parameters
issuerDN	String: a distinguished name in RFC 2253 format (or null)

Throws
IOException	if a parsing error occurs (incorrect form for DN)

setKeyUsage

Added in API level 1

public void setKeyUsage (boolean[] keyUsage)

Sets the keyUsage criterion. The X509Certificate must allow the specified keyUsage values. If null, no keyUsage check will be done. Note that an X509Certificate that has no keyUsage extension implicitly allows all keyUsage values.

Note that the boolean array supplied here is cloned to protect against subsequent modifications.

Parameters
keyUsage	boolean: a boolean array in the same format as the boolean array returned by X509Certificate.getKeyUsage(). Or null.

See also:

• getKeyUsage()

setMatchAllSubjectAltNames

Added in API level 1

public void setMatchAllSubjectAltNames (boolean matchAllNames)

Enables/disables matching all of the subjectAlternativeNames specified in the setSubjectAlternativeNames or addSubjectAlternativeName methods. If enabled, the X509Certificate must contain all of the specified subject alternative names. If disabled, the X509Certificate must contain at least one of the specified subject alternative names.

The matchAllNames flag is true by default.

Parameters
matchAllNames	boolean: if true, the flag is enabled; if false, the flag is disabled.

See also:

• getMatchAllSubjectAltNames()

setNameConstraints

Added in API level 1

public void setNameConstraints (byte[] bytes)

Sets the name constraints criterion. The X509Certificate must have subject and subject alternative names that meet the specified name constraints.

The name constraints are specified as a byte array. This byte array should contain the DER encoded form of the name constraints, as they would appear in the NameConstraints structure defined in RFC 5280 and X.509. The ASN.1 definition of this structure appears below.

NameConstraints ::= SEQUENCE {
       permittedSubtrees       [0]     GeneralSubtrees OPTIONAL,
       excludedSubtrees        [1]     GeneralSubtrees OPTIONAL }

  GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree

  GeneralSubtree ::= SEQUENCE {
       base                    GeneralName,
       minimum         [0]     BaseDistance DEFAULT 0,
       maximum         [1]     BaseDistance OPTIONAL }

  BaseDistance ::= INTEGER (0..MAX)

  GeneralName ::= CHOICE {
       otherName                       [0]     OtherName,
       rfc822Name                      [1]     IA5String,
       dNSName                         [2]     IA5String,
       x400Address                     [3]     ORAddress,
       directoryName                   [4]     Name,
       ediPartyName                    [5]     EDIPartyName,
       uniformResourceIdentifier       [6]     IA5String,
       iPAddress                       [7]     OCTET STRING,
       registeredID                    [8]     OBJECT IDENTIFIER}
 

Note that the byte array supplied here is cloned to protect against subsequent modifications.

Parameters
bytes	byte: a byte array containing the ASN.1 DER encoding of a NameConstraints extension to be used for checking name constraints. Only the value of the extension is included, not the OID or criticality flag. Can be null, in which case no name constraints check will be performed.

Throws
IOException	if a parsing error occurs

See also:

• getNameConstraints()

setPathToNames

Added in API level 1

public void setPathToNames (Collection<List<?>> names)

Sets the pathToNames criterion. The X509Certificate must not include name constraints that would prohibit building a path to the specified names.

This method allows the caller to specify, with a single method call, the complete set of names which the X509Certificates's name constraints must permit. The specified value replaces the previous value for the pathToNames criterion.

This constraint is useful when building a certification path forward (from the target toward the trust anchor. If a partial path has been built, any candidate certificate must not include name constraints that would prohibit building a path to any of the names in the partial path.

The names parameter (if not null) is a Collection with one entry for each name to be included in the pathToNames criterion. Each entry is a List whose first entry is an Integer (the name type, 0-8) and whose second entry is a String or a byte array (the name, in string or ASN.1 DER encoded form, respectively). There can be multiple names of the same type. If null is supplied as the value for this argument, no pathToNames check will be performed.

Each name in the Collection may be specified either as a String or as an ASN.1 encoded byte array. For more details about the formats used, see addPathToName(int type, String name) and addPathToName(int type, byte [] name).

Note: for distinguished names, specify the byte array form instead of the String form. See the note in addPathToName(int, java.lang.String) for more information.

Note that the names parameter can contain duplicate names (same name and name type), but they may be removed from the Collection of names returned by the getPathToNames method.

Note that a deep copy is performed on the Collection to protect against subsequent modifications.

Parameters
names	Collection: a Collection with one entry per name (or null)

Throws
IOException	if a parsing error occurs

See also:

• getPathToNames()

setPolicy

Added in API level 1

public void setPolicy (Set<String> certPolicySet)

Sets the policy constraint. The X509Certificate must include at least one of the specified policies in its certificate policies extension. If certPolicySet is empty, then the X509Certificate must include at least some specified policy in its certificate policies extension. If certPolicySet is null, no policy check will be performed.

Note that the Set is cloned to protect against subsequent modifications.

Parameters
certPolicySet	Set: a Set of certificate policy OIDs in string format (or null). Each OID is represented by a set of nonnegative integers separated by periods.

Throws
IOException	if a parsing error occurs on the OID such as the first component is not 0, 1 or 2 or the second component is greater than 39.

See also:

• getPolicy()

setPrivateKeyValid

Added in API level 1

public void setPrivateKeyValid (Date privateKeyValid)

Sets the privateKeyValid criterion. The specified date must fall within the private key validity period for the X509Certificate. If null, no privateKeyValid check will be done.

Note that the Date supplied here is cloned to protect against subsequent modifications.

Parameters
privateKeyValid	Date: the Date to check (or null)

See also:

• getPrivateKeyValid()

setSerialNumber

Added in API level 1

public void setSerialNumber (BigInteger serial)

Sets the serialNumber criterion. The specified serial number must match the certificate serial number in the X509Certificate. If null, any certificate serial number will do.

Parameters
serial	BigInteger: the certificate serial number to match (or null)

See also:

• getSerialNumber()

setSubject

Added in API level 1

public void setSubject (X500Principal subject)

Sets the subject criterion. The specified distinguished name must match the subject distinguished name in the X509Certificate. If null, any subject distinguished name will do.

Parameters
subject	X500Principal: a distinguished name as X500Principal (or null)

setSubject

Added in API level 1

public void setSubject (byte[] subjectDN)

Sets the subject criterion. The specified distinguished name must match the subject distinguished name in the X509Certificate. If null, any subject distinguished name will do.

If subjectDN is not null, it should contain a single DER encoded distinguished name, as defined in X.501. For the ASN.1 notation for this structure, see setIssuer(byte [] issuerDN).

Parameters
subjectDN	byte: a byte array containing the distinguished name in ASN.1 DER format (or null)

Throws
IOException	if an encoding error occurs (incorrect form for DN)

setSubject

Added in API level 1

public void setSubject (String subjectDN)

Denigrated, use setSubject(javax.security.auth.x500.X500Principal) or setSubject(byte[]) instead. This method should not be relied on as it can fail to match some certificates because of a loss of encoding information in the RFC 2253 String form of some distinguished names.

Sets the subject criterion. The specified distinguished name must match the subject distinguished name in the X509Certificate. If null, any subject distinguished name will do.

If subjectDN is not null, it should contain a distinguished name, in RFC 2253 format.

Parameters
subjectDN	String: a distinguished name in RFC 2253 format (or null)

Throws
IOException	if a parsing error occurs (incorrect form for DN)

setSubjectAlternativeNames

Added in API level 1

public void setSubjectAlternativeNames (Collection<List<?>> names)

Sets the subjectAlternativeNames criterion. The X509Certificate must contain all or at least one of the specified subjectAlternativeNames, depending on the value of the matchAllNames flag (see setMatchAllSubjectAltNames).

This method allows the caller to specify, with a single method call, the complete set of subject alternative names for the subjectAlternativeNames criterion. The specified value replaces the previous value for the subjectAlternativeNames criterion.

The names parameter (if not null) is a Collection with one entry for each name to be included in the subject alternative name criterion. Each entry is a List whose first entry is an Integer (the name type, 0-8) and whose second entry is a String or a byte array (the name, in string or ASN.1 DER encoded form, respectively). There can be multiple names of the same type. If null is supplied as the value for this argument, no subjectAlternativeNames check will be performed.

Each subject alternative name in the Collection may be specified either as a String or as an ASN.1 encoded byte array. For more details about the formats used, see addSubjectAlternativeName(int type, String name) and addSubjectAlternativeName(int type, byte [] name).

Note: for distinguished names, specify the byte array form instead of the String form. See the note in addSubjectAlternativeName(int, java.lang.String) for more information.

Note that the names parameter can contain duplicate names (same name and name type), but they may be removed from the Collection of names returned by the getSubjectAlternativeNames method.

Note that a deep copy is performed on the Collection to protect against subsequent modifications.

Parameters
names	Collection: a Collection of names (or null)

Throws
IOException	if a parsing error occurs

See also:

• getSubjectAlternativeNames()

setSubjectKeyIdentifier

Added in API level 1

public void setSubjectKeyIdentifier (byte[] subjectKeyID)

Sets the subjectKeyIdentifier criterion. The X509Certificate must contain a SubjectKeyIdentifier extension for which the contents of the extension matches the specified criterion value. If the criterion value is null, no subjectKeyIdentifier check will be done.

If subjectKeyID is not null, it should contain a single DER encoded value corresponding to the contents of the extension value (not including the object identifier, criticality setting, and encapsulating OCTET STRING) for a SubjectKeyIdentifier extension. The ASN.1 notation for this structure follows.

SubjectKeyIdentifier ::= KeyIdentifier

 KeyIdentifier ::= OCTET STRING
 

Since the format of subject key identifiers is not mandated by any standard, subject key identifiers are not parsed by the X509CertSelector. Instead, the values are compared using a byte-by-byte comparison.

Note that the byte array supplied here is cloned to protect against subsequent modifications.

Parameters
subjectKeyID	byte: the subject key identifier (or null)

See also:

• getSubjectKeyIdentifier()

setSubjectPublicKey

Added in API level 1

public void setSubjectPublicKey (byte[] key)

Sets the subjectPublicKey criterion. The X509Certificate must contain the specified subject public key. If null, no subjectPublicKey check will be done.

Because this method allows the public key to be specified as a byte array, it may be used for unknown key types.

If key is not null, it should contain a single DER encoded SubjectPublicKeyInfo structure, as defined in X.509. The ASN.1 notation for this structure is as follows.

SubjectPublicKeyInfo  ::=  SEQUENCE  {
   algorithm            AlgorithmIdentifier,
   subjectPublicKey     BIT STRING  }

 AlgorithmIdentifier  ::=  SEQUENCE  {
   algorithm               OBJECT IDENTIFIER,
   parameters              ANY DEFINED BY algorithm OPTIONAL  }
                              -- contains a value of the type
                              -- registered for use with the
                              -- algorithm object identifier value
 

Note that the byte array supplied here is cloned to protect against subsequent modifications.

Parameters
key	byte: a byte array containing the subject public key in ASN.1 DER form (or null)

Throws
IOException	if an encoding error occurs (incorrect form for subject public key)

See also:

• getSubjectPublicKey()

setSubjectPublicKey

Added in API level 1

public void setSubjectPublicKey (PublicKey key)

Sets the subjectPublicKey criterion. The X509Certificate must contain the specified subject public key. If null, no subjectPublicKey check will be done.

Parameters
key	PublicKey: the subject public key to check for (or null)

See also:

• getSubjectPublicKey()

setSubjectPublicKeyAlgID

Added in API level 1

public void setSubjectPublicKeyAlgID (String oid)

Sets the subjectPublicKeyAlgID criterion. The X509Certificate must contain a subject public key with the specified algorithm. If null, no subjectPublicKeyAlgID check will be done.

Parameters
oid	String: The object identifier (OID) of the algorithm to check for (or null). An OID is represented by a set of nonnegative integers separated by periods.

Throws
IOException	if the OID is invalid, such as the first component being not 0, 1 or 2 or the second component being greater than 39.

See also:

• getSubjectPublicKeyAlgID()

toString

Added in API level 1

public String toString ()

Return a printable representation of the CertSelector.

Returns
String	a String describing the contents of the CertSelector