UnstructuredName should support DirectoryString

FULL PRODUCT VERSION :
java version " 1.7.0_21 "
Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java HotSpot(TM) Client VM (build 23.21-b01, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
6.1.7601

A DESCRIPTION OF THE PROBLEM :
Executing keytool -printcertreq on a CSR which has requested extension X509v3 Subject Alternative Name of type PrintableString leads to the following error:
keytool error: java.io.IOException: Value of attribute 1.2.840.113549.1.9.2 (UnstructuredName) has wrong tag: 19. Expected tags: 22.
This is wrong, because according to the RFC 2985, unstructuredName is of type PKCS9String, which can be any either IA5String (supported by keytool) or DirectoryString (which includes PrintableString):

   unstructuredName ATTRIBUTE ::= {
           WITH SYNTAX PKCS9String {pkcs-9-ub-unstructuredName}
           EQUALITY MATCHING RULE pkcs9CaseIgnoreMatch
           ID pkcs-9-at-unstructuredName
   }

   PKCS9String { INTEGER : maxSize} ::= CHOICE {
           ia5String IA5String (SIZE(1..maxSize)),
           directoryString DirectoryString {maxSize}
   }

Offending code is in PKCS9Attribute class:

  300 private static final Byte[][] PKCS9_VALUE_TAGS = {
  301 null,
  302 {new Byte(DerValue.tag_IA5String)}, // EMailAddress
  303 {new Byte(DerValue.tag_IA5String)}, // UnstructuredName
  304 {new Byte(DerValue.tag_ObjectId)}, // ContentType
  305 {new Byte(DerValue.tag_OctetString)}, // MessageDigest
  306 {new Byte(DerValue.tag_UtcTime)}, // SigningTime
  307 {new Byte(DerValue.tag_Sequence)}, // Countersignature
  308 {new Byte(DerValue.tag_PrintableString),
  309 new Byte(DerValue.tag_T61String)}, // ChallengePassword
  310 {new Byte(DerValue.tag_PrintableString),
  311 new Byte(DerValue.tag_T61String)}, // UnstructuredAddress
  312 {new Byte(DerValue.tag_SetOf)}, // ExtendedCertificateAttributes
  313 {new Byte(DerValue.tag_Sequence)}, // issuerAndSerialNumber
  314 null,
  315 null,
  316 null,
  317 {new Byte(DerValue.tag_Sequence)}, // extensionRequest
  318 {new Byte(DerValue.tag_Sequence)}, // SMIMECapability
  319 {new Byte(DerValue.tag_Sequence)}, // SigningCertificate
  320 {new Byte(DerValue.tag_Sequence)} // SignatureTimestampToken
  321 };

  492 // check for illegal element tags
  493 Byte tag;
  494 for (int i=0; i < elems.length; i++) {
  495 tag = new Byte(elems[i].tag);
  496
  497 if (indexOf(tag, PKCS9_VALUE_TAGS[index], 0) == -1)
  498 throwTagException(tag);
  499 }

  820 private void throwTagException(Byte tag)
  821 throws IOException {
  822 Byte[] expectedTags = PKCS9_VALUE_TAGS[index];
  823 StringBuffer msg = new StringBuffer(100);
  824 msg.append( " Value of attribute " );
  825 msg.append(getOID().toString());
  826 msg.append( " ( " );
  827 msg.append(getName());
  828 msg.append( " ) has wrong tag: " );
  829 msg.append(tag.toString());
  830 msg.append( " . Expected tags: " );


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run:
keytool -printcertreq -v -file sample.csr

Where sample.csr is:

-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
        Attributes:
            unstructuredName :requestTestWithExt
        Requested Extensions:
            X509v3 Key Usage:
                Non Repudiation
            X509v3 Extended Key Usage:
                TLS Web Client Authentication, Time Stamping
            X509v3 Subject Alternative Name: critical
                email:info.e-deklaracje@mofnet.gov.pl
            Netscape Cert Type:
                SSL Client, SSL Server, S/MIME
            Netscape Comment:
                certificateTestWithExt

ACTUAL -
keytool error: java.io.IOException: Value of attribute 1.2.840.113549.1.9.2 (UnstructuredName) has wrong tag: 19. Expected tags: 22.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
keytool error: java.io.IOException: Value of attribute 1.2.840.113549.1.9.2 (UnstructuredName) has wrong tag: 19. Expected tags: 22.
java.io.IOException: Value of attribute 1.2.840.113549.1.9.2 (UnstructuredName) has wrong tag: 19. Expected tags: 22.
        at sun.security.pkcs.PKCS9Attribute.throwTagException(Unknown Source)
        at sun.security.pkcs.PKCS9Attribute.<init>(Unknown Source)
        at sun.security.pkcs.PKCS10Attribute.<init>(Unknown Source)
        at sun.security.pkcs.PKCS10Attributes.<init>(Unknown Source)
        at sun.security.pkcs.PKCS10.<init>(Unknown Source)
        at sun.security.tools.KeyTool.doPrintCertReq(Unknown Source)
        at sun.security.tools.KeyTool.doCommands(Unknown Source)
        at sun.security.tools.KeyTool.run(Unknown Source)
        at sun.security.tools.KeyTool.main(Unknown Source)

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Use openssl.