1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. Oracle designates this 9 * particular file as subject to the "Classpath" exception as provided 10 * by Oracle in the LICENSE file that accompanied this code. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 23 * or visit www.oracle.com if you need additional information or have any 24 * questions. 25 */ 26 27 package sun.security.x509; 28 29 import java.io.*; 30 import java.util.*; 31 import java.security.*; 32 33 import sun.security.util.*; 34 35 36 /** 37 * This class identifies algorithms, such as cryptographic transforms, each 38 * of which may be associated with parameters. Instances of this base class 39 * are used when this runtime environment has no special knowledge of the 40 * algorithm type, and may also be used in other cases. Equivalence is 41 * defined according to OID and (where relevant) parameters. 42 * 43 * <P>Subclasses may be used, for example when when the algorithm ID has 44 * associated parameters which some code (e.g. code using public keys) needs 45 * to have parsed. Two examples of such algorithms are Diffie-Hellman key 46 * exchange, and the Digital Signature Standard Algorithm (DSS/DSA). 47 * 48 * <P>The OID constants defined in this class correspond to some widely 49 * used algorithms, for which conventional string names have been defined. 50 * This class is not a general repository for OIDs, or for such string names. 51 * Note that the mappings between algorithm IDs and algorithm names is 52 * not one-to-one. 53 * 54 * 55 * @author David Brownell 56 * @author Amit Kapoor 57 * @author Hemma Prafullchandra 58 */ 59 public class AlgorithmId implements Serializable, DerEncoder { 60 61 /** use serialVersionUID from JDK 1.1. for interoperability */ 62 private static final long serialVersionUID = 7205873507486557157L; 63 64 /** 65 * The object identitifer being used for this algorithm. 66 */ 67 private ObjectIdentifier algid; 68 69 // The (parsed) parameters 70 private AlgorithmParameters algParams; 71 private boolean constructedFromDer = true; 72 73 /** 74 * Parameters for this algorithm. These are stored in unparsed 75 * DER-encoded form; subclasses can be made to automaticaly parse 76 * them so there is fast access to these parameters. 77 */ 78 protected DerValue params; 79 80 81 /** 82 * Constructs an algorithm ID which will be initialized 83 * separately, for example by deserialization. 84 * @deprecated use one of the other constructors. 85 */ 86 @Deprecated 87 public AlgorithmId() { } 88 89 /** 90 * Constructs a parameterless algorithm ID. 91 * 92 * @param oid the identifier for the algorithm 93 */ 94 public AlgorithmId(ObjectIdentifier oid) { 95 algid = oid; 96 } 97 98 /** 99 * Constructs an algorithm ID with algorithm parameters. 100 * 101 * @param oid the identifier for the algorithm. 102 * @param algparams the associated algorithm parameters. 103 */ 104 public AlgorithmId(ObjectIdentifier oid, AlgorithmParameters algparams) { 105 algid = oid; 106 algParams = algparams; 107 constructedFromDer = false; 108 } 109 110 private AlgorithmId(ObjectIdentifier oid, DerValue params) 111 throws IOException { 112 this.algid = oid; 113 this.params = params; 114 if (this.params != null) { 115 decodeParams(); 116 } 117 } 118 119 protected void decodeParams() throws IOException { 120 String algidString = algid.toString(); 121 try { 122 algParams = AlgorithmParameters.getInstance(algidString); 123 } catch (NoSuchAlgorithmException e) { 124 try { 125 // Try the internal EC code so that we can fully parse EC 126 // keys even if the provider is not registered. 127 // This code can go away once we have EC in the SUN provider. 128 algParams = AlgorithmParameters.getInstance(algidString, 129 sun.security.ec.ECKeyFactory.ecInternalProvider); 130 } catch (NoSuchAlgorithmException ee) { 131 /* 132 * This algorithm parameter type is not supported, so we cannot 133 * parse the parameters. 134 */ 135 algParams = null; 136 return; 137 } 138 } 139 // Decode (parse) the parameters 140 algParams.init(params.toByteArray()); 141 } 142 143 /** 144 * Marshal a DER-encoded "AlgorithmID" sequence on the DER stream. 145 */ 146 public final void encode(DerOutputStream out) throws IOException { 147 derEncode(out); 148 } 149 150 /** 151 * DER encode this object onto an output stream. 152 * Implements the <code>DerEncoder</code> interface. 153 * 154 * @param out 155 * the output stream on which to write the DER encoding. 156 * 157 * @exception IOException on encoding error. 158 */ 159 public void derEncode (OutputStream out) throws IOException { 160 DerOutputStream bytes = new DerOutputStream(); 161 DerOutputStream tmp = new DerOutputStream(); 162 163 bytes.putOID(algid); 164 // Setup params from algParams since no DER encoding is given 165 if (constructedFromDer == false) { 166 if (algParams != null) { 167 params = new DerValue(algParams.getEncoded()); 168 } else { 169 params = null; 170 } 171 } 172 if (params == null) { 173 // Changes backed out for compatibility with Solaris 174 175 // Several AlgorithmId should omit the whole parameter part when 176 // it's NULL. They are --- 177 // rfc3370 2.1: Implementations SHOULD generate SHA-1 178 // AlgorithmIdentifiers with absent parameters. 179 // rfc3447 C1: When id-sha1, id-sha256, id-sha384 and id-sha512 180 // are used in an AlgorithmIdentifier the parameters (which are 181 // optional) SHOULD be omitted. 182 // rfc3279 2.3.2: The id-dsa algorithm syntax includes optional 183 // domain parameters... When omitted, the parameters component 184 // MUST be omitted entirely 185 // rfc3370 3.1: When the id-dsa-with-sha1 algorithm identifier 186 // is used, the AlgorithmIdentifier parameters field MUST be absent. 187 /*if ( 188 algid.equals((Object)SHA_oid) || 189 algid.equals((Object)SHA256_oid) || 190 algid.equals((Object)SHA384_oid) || 191 algid.equals((Object)SHA512_oid) || 192 algid.equals((Object)DSA_oid) || 193 algid.equals((Object)sha1WithDSA_oid)) { 194 ; // no parameter part encoded 195 } else { 196 bytes.putNull(); 197 }*/ 198 bytes.putNull(); 199 } else { 200 bytes.putDerValue(params); 201 } 202 tmp.write(DerValue.tag_Sequence, bytes); 203 out.write(tmp.toByteArray()); 204 } 205 206 207 /** 208 * Returns the DER-encoded X.509 AlgorithmId as a byte array. 209 */ 210 public final byte[] encode() throws IOException { 211 DerOutputStream out = new DerOutputStream(); 212 derEncode(out); 213 return out.toByteArray(); 214 } 215 216 /** 217 * Returns the ISO OID for this algorithm. This is usually converted 218 * to a string and used as part of an algorithm name, for example 219 * "OID.1.3.14.3.2.13" style notation. Use the <code>getName</code> 220 * call when you do not need to ensure cross-system portability 221 * of algorithm names, or need a user friendly name. 222 */ 223 public final ObjectIdentifier getOID () { 224 return algid; 225 } 226 227 /** 228 * Returns a name for the algorithm which may be more intelligible 229 * to humans than the algorithm's OID, but which won't necessarily 230 * be comprehensible on other systems. For example, this might 231 * return a name such as "MD5withRSA" for a signature algorithm on 232 * some systems. It also returns names like "OID.1.2.3.4", when 233 * no particular name for the algorithm is known. 234 */ 235 public String getName() { 236 String algName = nameTable.get(algid); 237 if (algName != null) { 238 return algName; 239 } 240 if ((params != null) && algid.equals(specifiedWithECDSA_oid)) { 241 try { 242 AlgorithmId paramsId = 243 AlgorithmId.parse(new DerValue(getEncodedParams())); 244 String paramsName = paramsId.getName(); 245 if (paramsName.equals("SHA")) { 246 paramsName = "SHA1"; 247 } 248 algName = paramsName + "withECDSA"; 249 } catch (IOException e) { 250 // ignore 251 } 252 } 253 254 // Try to update the name <-> OID mapping table. 255 synchronized (oidTable) { 256 reinitializeMappingTableLocked(); 257 algName = nameTable.get(algid); 258 } 259 260 return (algName == null) ? algid.toString() : algName; 261 } 262 263 public AlgorithmParameters getParameters() { 264 return algParams; 265 } 266 267 /** 268 * Returns the DER encoded parameter, which can then be 269 * used to initialize java.security.AlgorithmParamters. 270 * 271 * @return DER encoded parameters, or null not present. 272 */ 273 public byte[] getEncodedParams() throws IOException { 274 return (params == null) ? null : params.toByteArray(); 275 } 276 277 /** 278 * Returns true iff the argument indicates the same algorithm 279 * with the same parameters. 280 */ 281 public boolean equals(AlgorithmId other) { 282 boolean paramsEqual = 283 (params == null ? other.params == null : params.equals(other.params)); 284 return (algid.equals(other.algid) && paramsEqual); 285 } 286 287 /** 288 * Compares this AlgorithmID to another. If algorithm parameters are 289 * available, they are compared. Otherwise, just the object IDs 290 * for the algorithm are compared. 291 * 292 * @param other preferably an AlgorithmId, else an ObjectIdentifier 293 */ 294 public boolean equals(Object other) { 295 if (this == other) { 296 return true; 297 } 298 if (other instanceof AlgorithmId) { 299 return equals((AlgorithmId) other); 300 } else if (other instanceof ObjectIdentifier) { 301 return equals((ObjectIdentifier) other); 302 } else { 303 return false; 304 } 305 } 306 307 /** 308 * Compares two algorithm IDs for equality. Returns true iff 309 * they are the same algorithm, ignoring algorithm parameters. 310 */ 311 public final boolean equals(ObjectIdentifier id) { 312 return algid.equals(id); 313 } 314 315 /** 316 * Returns a hashcode for this AlgorithmId. 317 * 318 * @return a hashcode for this AlgorithmId. 319 */ 320 public int hashCode() { 321 StringBuilder sbuf = new StringBuilder(); 322 sbuf.append(algid.toString()); 323 sbuf.append(paramsToString()); 324 return sbuf.toString().hashCode(); 325 } 326 327 /** 328 * Provides a human-readable description of the algorithm parameters. 329 * This may be redefined by subclasses which parse those parameters. 330 */ 331 protected String paramsToString() { 332 if (params == null) { 333 return ""; 334 } else if (algParams != null) { 335 return algParams.toString(); 336 } else { 337 return ", params unparsed"; 338 } 339 } 340 341 /** 342 * Returns a string describing the algorithm and its parameters. 343 */ 344 public String toString() { 345 return getName() + paramsToString(); 346 } 347 348 /** 349 * Parse (unmarshal) an ID from a DER sequence input value. This form 350 * parsing might be used when expanding a value which has already been 351 * partially unmarshaled as a set or sequence member. 352 * 353 * @exception IOException on error. 354 * @param val the input value, which contains the algid and, if 355 * there are any parameters, those parameters. 356 * @return an ID for the algorithm. If the system is configured 357 * appropriately, this may be an instance of a class 358 * with some kind of special support for this algorithm. 359 * In that case, you may "narrow" the type of the ID. 360 */ 361 public static AlgorithmId parse(DerValue val) throws IOException { 362 if (val.tag != DerValue.tag_Sequence) { 363 throw new IOException("algid parse error, not a sequence"); 364 } 365 366 /* 367 * Get the algorithm ID and any parameters. 368 */ 369 ObjectIdentifier algid; 370 DerValue params; 371 DerInputStream in = val.toDerInputStream(); 372 373 algid = in.getOID(); 374 if (in.available() == 0) { 375 params = null; 376 } else { 377 params = in.getDerValue(); 378 if (params.tag == DerValue.tag_Null) { 379 if (params.length() != 0) { 380 throw new IOException("invalid NULL"); 381 } 382 params = null; 383 } 384 if (in.available() != 0) { 385 throw new IOException("Invalid AlgorithmIdentifier: extra data"); 386 } 387 } 388 389 return new AlgorithmId(algid, params); 390 } 391 392 /** 393 * Returns one of the algorithm IDs most commonly associated 394 * with this algorithm name. 395 * 396 * @param algname the name being used 397 * @deprecated use the short get form of this method. 398 * @exception NoSuchAlgorithmException on error. 399 */ 400 @Deprecated 401 public static AlgorithmId getAlgorithmId(String algname) 402 throws NoSuchAlgorithmException { 403 return get(algname); 404 } 405 406 /** 407 * Returns one of the algorithm IDs most commonly associated 408 * with this algorithm name. 409 * 410 * @param algname the name being used 411 * @exception NoSuchAlgorithmException on error. 412 */ 413 public static AlgorithmId get(String algname) 414 throws NoSuchAlgorithmException { 415 ObjectIdentifier oid; 416 try { 417 oid = algOID(algname); 418 } catch (IOException ioe) { 419 throw new NoSuchAlgorithmException 420 ("Invalid ObjectIdentifier " + algname); 421 } 422 423 if (oid == null) { 424 throw new NoSuchAlgorithmException 425 ("unrecognized algorithm name: " + algname); 426 } 427 return new AlgorithmId(oid); 428 } 429 430 /** 431 * Returns one of the algorithm IDs most commonly associated 432 * with this algorithm parameters. 433 * 434 * @param algparams the associated algorithm parameters. 435 * @exception NoSuchAlgorithmException on error. 436 */ 437 public static AlgorithmId get(AlgorithmParameters algparams) 438 throws NoSuchAlgorithmException { 439 ObjectIdentifier oid; 440 String algname = algparams.getAlgorithm(); 441 try { 442 oid = algOID(algname); 443 } catch (IOException ioe) { 444 throw new NoSuchAlgorithmException 445 ("Invalid ObjectIdentifier " + algname); 446 } 447 if (oid == null) { 448 throw new NoSuchAlgorithmException 449 ("unrecognized algorithm name: " + algname); 450 } 451 return new AlgorithmId(oid, algparams); 452 } 453 454 /* 455 * Translates from some common algorithm names to the 456 * OID with which they're usually associated ... this mapping 457 * is the reverse of the one below, except in those cases 458 * where synonyms are supported or where a given algorithm 459 * is commonly associated with multiple OIDs. 460 * 461 * XXX This method needs to be enhanced so that we can also pass the 462 * scope of the algorithm name to it, e.g., the algorithm name "DSA" 463 * may have a different OID when used as a "Signature" algorithm than when 464 * used as a "KeyPairGenerator" algorithm. 465 */ 466 private static ObjectIdentifier algOID(String name) throws IOException { 467 // See if algname is in printable OID ("dot-dot") notation 468 if (name.indexOf('.') != -1) { 469 if (name.startsWith("OID.")) { 470 return new ObjectIdentifier(name.substring("OID.".length())); 471 } else { 472 return new ObjectIdentifier(name); 473 } 474 } 475 476 // Digesting algorithms 477 if (name.equalsIgnoreCase("MD5")) { 478 return AlgorithmId.MD5_oid; 479 } 480 if (name.equalsIgnoreCase("MD2")) { 481 return AlgorithmId.MD2_oid; 482 } 483 if (name.equalsIgnoreCase("SHA") || name.equalsIgnoreCase("SHA1") 484 || name.equalsIgnoreCase("SHA-1")) { 485 return AlgorithmId.SHA_oid; 486 } 487 if (name.equalsIgnoreCase("SHA-256") || 488 name.equalsIgnoreCase("SHA256")) { 489 return AlgorithmId.SHA256_oid; 490 } 491 if (name.equalsIgnoreCase("SHA-384") || 492 name.equalsIgnoreCase("SHA384")) { 493 return AlgorithmId.SHA384_oid; 494 } 495 if (name.equalsIgnoreCase("SHA-512") || 496 name.equalsIgnoreCase("SHA512")) { 497 return AlgorithmId.SHA512_oid; 498 } 499 500 501 // Various public key algorithms 502 if (name.equalsIgnoreCase("RSA")) { 503 return AlgorithmId.RSAEncryption_oid; 504 } 505 if (name.equalsIgnoreCase("Diffie-Hellman") 506 || name.equalsIgnoreCase("DH")) { 507 return AlgorithmId.DH_oid; 508 } 509 if (name.equalsIgnoreCase("DSA")) { 510 return AlgorithmId.DSA_oid; 511 } 512 if (name.equalsIgnoreCase("EC")) { 513 return EC_oid; 514 } 515 516 // Common signature types 517 if (name.equalsIgnoreCase("MD5withRSA") 518 || name.equalsIgnoreCase("MD5/RSA")) { 519 return AlgorithmId.md5WithRSAEncryption_oid; 520 } 521 if (name.equalsIgnoreCase("MD2withRSA") 522 || name.equalsIgnoreCase("MD2/RSA")) { 523 return AlgorithmId.md2WithRSAEncryption_oid; 524 } 525 if (name.equalsIgnoreCase("SHAwithDSA") 526 || name.equalsIgnoreCase("SHA1withDSA") 527 || name.equalsIgnoreCase("SHA/DSA") 528 || name.equalsIgnoreCase("SHA1/DSA") 529 || name.equalsIgnoreCase("DSAWithSHA1") 530 || name.equalsIgnoreCase("DSS") 531 || name.equalsIgnoreCase("SHA-1/DSA")) { 532 return AlgorithmId.sha1WithDSA_oid; 533 } 534 if (name.equalsIgnoreCase("SHA1WithRSA") 535 || name.equalsIgnoreCase("SHA1/RSA")) { 536 return AlgorithmId.sha1WithRSAEncryption_oid; 537 } 538 if (name.equalsIgnoreCase("SHA1withECDSA") 539 || name.equalsIgnoreCase("ECDSA")) { 540 return AlgorithmId.sha1WithECDSA_oid; 541 } 542 if (name.equalsIgnoreCase("SHA224withECDSA")) { 543 return AlgorithmId.sha224WithECDSA_oid; 544 } 545 if (name.equalsIgnoreCase("SHA256withECDSA")) { 546 return AlgorithmId.sha256WithECDSA_oid; 547 } 548 if (name.equalsIgnoreCase("SHA384withECDSA")) { 549 return AlgorithmId.sha384WithECDSA_oid; 550 } 551 if (name.equalsIgnoreCase("SHA512withECDSA")) { 552 return AlgorithmId.sha512WithECDSA_oid; 553 } 554 555 // See if any of the installed providers supply a mapping from 556 // the given algorithm name to an OID string 557 synchronized (oidTable) { 558 reinitializeMappingTableLocked(); 559 return oidTable.get(name.toUpperCase(Locale.ENGLISH)); 560 } 561 } 562 563 private static void reinitializeMappingTableLocked() { 564 // Android-changed: Update the table only if the OID changed. Also synchronize 565 // on oidTable for thread safety. 566 int currentVersion = Security.getVersion(); 567 if (initOidTableVersion != currentVersion) { 568 Provider[] provs = Security.getProviders(); 569 for (int i=0; i<provs.length; i++) { 570 for (Enumeration<Object> enum_ = provs[i].keys(); 571 enum_.hasMoreElements(); ) { 572 String alias = (String)enum_.nextElement(); 573 String upperCaseAlias = alias.toUpperCase(Locale.ENGLISH); 574 int index; 575 if (upperCaseAlias.startsWith("ALG.ALIAS")) { 576 if ((index=upperCaseAlias.indexOf("OID.", 0)) != -1) { 577 index += "OID.".length(); 578 if (index == alias.length()) { 579 // invalid alias entry 580 break; 581 } 582 String oidString = alias.substring(index); 583 String stdAlgName = provs[i].getProperty(alias); 584 if (stdAlgName != null) { 585 stdAlgName = stdAlgName.toUpperCase(Locale.ENGLISH); 586 587 ObjectIdentifier oid = null; 588 try { 589 oid = new ObjectIdentifier(oidString); 590 } catch (IOException e) { 591 // Not an OID. 592 } 593 594 if (oid != null) { 595 if (!oidTable.containsKey(stdAlgName)) { 596 oidTable.put(stdAlgName, oid); 597 } 598 if (!nameTable.containsKey(oid)) { 599 nameTable.put(oid, stdAlgName); 600 } 601 } 602 } 603 } else { 604 // Android-changed: If the alias isn't specified with an explicit 605 // "OID." in the name, we still attempt to parse it as one. 606 final int sep = alias.indexOf('.', "ALG.ALIAS.".length()); 607 String suffix = alias.substring(sep + 1); 608 609 ObjectIdentifier oid = null; 610 try { 611 oid = new ObjectIdentifier(suffix); 612 } catch (IOException e) { 613 // Not an OID. 614 } 615 616 if (oid != null) { 617 String stdAlgName = provs[i].getProperty(alias); 618 if (stdAlgName != null) { 619 stdAlgName = stdAlgName.toUpperCase(Locale.ENGLISH); 620 if (!oidTable.containsKey(stdAlgName)) { 621 oidTable.put(stdAlgName, oid); 622 } 623 if (!nameTable.containsKey(oid)) { 624 nameTable.put(oid, stdAlgName); 625 } 626 } 627 } 628 } 629 } 630 } 631 } 632 633 initOidTableVersion = currentVersion; 634 } 635 } 636 637 private static ObjectIdentifier oid(int ... values) { 638 return ObjectIdentifier.newInternal(values); 639 } 640 641 private static int initOidTableVersion = -1; 642 private static final Map<String,ObjectIdentifier> oidTable = 643 new HashMap<String,ObjectIdentifier>(1); 644 private static final Map<ObjectIdentifier,String> nameTable = 645 new HashMap<ObjectIdentifier,String>(); 646 647 /*****************************************************************/ 648 649 /* 650 * HASHING ALGORITHMS 651 */ 652 653 /** 654 * Algorithm ID for the MD2 Message Digest Algorthm, from RFC 1319. 655 * OID = 1.2.840.113549.2.2 656 */ 657 public static final ObjectIdentifier MD2_oid = 658 ObjectIdentifier.newInternal(new int[] {1, 2, 840, 113549, 2, 2}); 659 660 /** 661 * Algorithm ID for the MD5 Message Digest Algorthm, from RFC 1321. 662 * OID = 1.2.840.113549.2.5 663 */ 664 public static final ObjectIdentifier MD5_oid = 665 ObjectIdentifier.newInternal(new int[] {1, 2, 840, 113549, 2, 5}); 666 667 /** 668 * Algorithm ID for the SHA1 Message Digest Algorithm, from FIPS 180-1. 669 * This is sometimes called "SHA", though that is often confusing since 670 * many people refer to FIPS 180 (which has an error) as defining SHA. 671 * OID = 1.3.14.3.2.26. Old SHA-0 OID: 1.3.14.3.2.18. 672 */ 673 public static final ObjectIdentifier SHA_oid = 674 ObjectIdentifier.newInternal(new int[] {1, 3, 14, 3, 2, 26}); 675 676 public static final ObjectIdentifier SHA256_oid = 677 ObjectIdentifier.newInternal(new int[] {2, 16, 840, 1, 101, 3, 4, 2, 1}); 678 679 public static final ObjectIdentifier SHA384_oid = 680 ObjectIdentifier.newInternal(new int[] {2, 16, 840, 1, 101, 3, 4, 2, 2}); 681 682 public static final ObjectIdentifier SHA512_oid = 683 ObjectIdentifier.newInternal(new int[] {2, 16, 840, 1, 101, 3, 4, 2, 3}); 684 685 /* 686 * COMMON PUBLIC KEY TYPES 687 */ 688 private static final int DH_data[] = { 1, 2, 840, 113549, 1, 3, 1 }; 689 private static final int DH_PKIX_data[] = { 1, 2, 840, 10046, 2, 1 }; 690 private static final int DSA_OIW_data[] = { 1, 3, 14, 3, 2, 12 }; 691 private static final int DSA_PKIX_data[] = { 1, 2, 840, 10040, 4, 1 }; 692 private static final int RSA_data[] = { 2, 5, 8, 1, 1 }; 693 private static final int RSAEncryption_data[] = 694 { 1, 2, 840, 113549, 1, 1, 1 }; 695 696 public static final ObjectIdentifier DH_oid; 697 public static final ObjectIdentifier DH_PKIX_oid; 698 public static final ObjectIdentifier DSA_oid; 699 public static final ObjectIdentifier DSA_OIW_oid; 700 public static final ObjectIdentifier EC_oid = oid(1, 2, 840, 10045, 2, 1); 701 public static final ObjectIdentifier RSA_oid; 702 public static final ObjectIdentifier RSAEncryption_oid; 703 704 /* 705 * COMMON SIGNATURE ALGORITHMS 706 */ 707 private static final int md2WithRSAEncryption_data[] = 708 { 1, 2, 840, 113549, 1, 1, 2 }; 709 private static final int md5WithRSAEncryption_data[] = 710 { 1, 2, 840, 113549, 1, 1, 4 }; 711 private static final int sha1WithRSAEncryption_data[] = 712 { 1, 2, 840, 113549, 1, 1, 5 }; 713 private static final int sha1WithRSAEncryption_OIW_data[] = 714 { 1, 3, 14, 3, 2, 29 }; 715 private static final int sha256WithRSAEncryption_data[] = 716 { 1, 2, 840, 113549, 1, 1, 11 }; 717 private static final int sha384WithRSAEncryption_data[] = 718 { 1, 2, 840, 113549, 1, 1, 12 }; 719 private static final int sha512WithRSAEncryption_data[] = 720 { 1, 2, 840, 113549, 1, 1, 13 }; 721 private static final int shaWithDSA_OIW_data[] = 722 { 1, 3, 14, 3, 2, 13 }; 723 private static final int sha1WithDSA_OIW_data[] = 724 { 1, 3, 14, 3, 2, 27 }; 725 private static final int dsaWithSHA1_PKIX_data[] = 726 { 1, 2, 840, 10040, 4, 3 }; 727 728 public static final ObjectIdentifier md2WithRSAEncryption_oid; 729 public static final ObjectIdentifier md5WithRSAEncryption_oid; 730 public static final ObjectIdentifier sha1WithRSAEncryption_oid; 731 public static final ObjectIdentifier sha1WithRSAEncryption_OIW_oid; 732 public static final ObjectIdentifier sha256WithRSAEncryption_oid; 733 public static final ObjectIdentifier sha384WithRSAEncryption_oid; 734 public static final ObjectIdentifier sha512WithRSAEncryption_oid; 735 public static final ObjectIdentifier shaWithDSA_OIW_oid; 736 public static final ObjectIdentifier sha1WithDSA_OIW_oid; 737 public static final ObjectIdentifier sha1WithDSA_oid; 738 739 public static final ObjectIdentifier sha1WithECDSA_oid = 740 oid(1, 2, 840, 10045, 4, 1); 741 public static final ObjectIdentifier sha224WithECDSA_oid = 742 oid(1, 2, 840, 10045, 4, 3, 1); 743 public static final ObjectIdentifier sha256WithECDSA_oid = 744 oid(1, 2, 840, 10045, 4, 3, 2); 745 public static final ObjectIdentifier sha384WithECDSA_oid = 746 oid(1, 2, 840, 10045, 4, 3, 3); 747 public static final ObjectIdentifier sha512WithECDSA_oid = 748 oid(1, 2, 840, 10045, 4, 3, 4); 749 public static final ObjectIdentifier specifiedWithECDSA_oid = 750 oid(1, 2, 840, 10045, 4, 3); 751 752 /** 753 * Algorithm ID for the PBE encryption algorithms from PKCS#5 and 754 * PKCS#12. 755 */ 756 public static final ObjectIdentifier pbeWithMD5AndDES_oid = 757 ObjectIdentifier.newInternal(new int[]{1, 2, 840, 113549, 1, 5, 3}); 758 public static final ObjectIdentifier pbeWithMD5AndRC2_oid = 759 ObjectIdentifier.newInternal(new int[] {1, 2, 840, 113549, 1, 5, 6}); 760 public static final ObjectIdentifier pbeWithSHA1AndDES_oid = 761 ObjectIdentifier.newInternal(new int[] {1, 2, 840, 113549, 1, 5, 10}); 762 public static final ObjectIdentifier pbeWithSHA1AndRC2_oid = 763 ObjectIdentifier.newInternal(new int[] {1, 2, 840, 113549, 1, 5, 11}); 764 public static ObjectIdentifier pbeWithSHA1AndDESede_oid = 765 ObjectIdentifier.newInternal(new int[] {1, 2, 840, 113549, 1, 12, 1, 3}); 766 public static ObjectIdentifier pbeWithSHA1AndRC2_40_oid = 767 ObjectIdentifier.newInternal(new int[] {1, 2, 840, 113549, 1, 12, 1, 6}); 768 769 770 static { 771 /* 772 * Note the preferred OIDs are named simply with no "OIW" or 773 * "PKIX" in them, even though they may point to data from these 774 * specs; e.g. SHA_oid, DH_oid, DSA_oid, SHA1WithDSA_oid... 775 */ 776 /** 777 * Algorithm ID for Diffie Hellman Key agreement, from PKCS #3. 778 * Parameters include public values P and G, and may optionally specify 779 * the length of the private key X. Alternatively, algorithm parameters 780 * may be derived from another source such as a Certificate Authority's 781 * certificate. 782 * OID = 1.2.840.113549.1.3.1 783 */ 784 DH_oid = ObjectIdentifier.newInternal(DH_data); 785 786 /** 787 * Algorithm ID for the Diffie Hellman Key Agreement (DH), from RFC 3279. 788 * Parameters may include public values P and G. 789 * OID = 1.2.840.10046.2.1 790 */ 791 DH_PKIX_oid = ObjectIdentifier.newInternal(DH_PKIX_data); 792 793 /** 794 * Algorithm ID for the Digital Signing Algorithm (DSA), from the 795 * NIST OIW Stable Agreements part 12. 796 * Parameters may include public values P, Q, and G; or these may be 797 * derived from 798 * another source such as a Certificate Authority's certificate. 799 * OID = 1.3.14.3.2.12 800 */ 801 DSA_OIW_oid = ObjectIdentifier.newInternal(DSA_OIW_data); 802 803 /** 804 * Algorithm ID for the Digital Signing Algorithm (DSA), from RFC 3279. 805 * Parameters may include public values P, Q, and G; or these may be 806 * derived from another source such as a Certificate Authority's 807 * certificate. 808 * OID = 1.2.840.10040.4.1 809 */ 810 DSA_oid = ObjectIdentifier.newInternal(DSA_PKIX_data); 811 812 /** 813 * Algorithm ID for RSA keys used for any purpose, as defined in X.509. 814 * The algorithm parameter is a single value, the number of bits in the 815 * public modulus. 816 * OID = 2.5.8.1.1 817 */ 818 RSA_oid = ObjectIdentifier.newInternal(RSA_data); 819 820 /** 821 * Algorithm ID for RSA keys used with RSA encryption, as defined 822 * in PKCS #1. There are no parameters associated with this algorithm. 823 * OID = 1.2.840.113549.1.1.1 824 */ 825 RSAEncryption_oid = ObjectIdentifier.newInternal(RSAEncryption_data); 826 827 /** 828 * Identifies a signing algorithm where an MD2 digest is encrypted 829 * using an RSA private key; defined in PKCS #1. Use of this 830 * signing algorithm is discouraged due to MD2 vulnerabilities. 831 * OID = 1.2.840.113549.1.1.2 832 */ 833 md2WithRSAEncryption_oid = 834 ObjectIdentifier.newInternal(md2WithRSAEncryption_data); 835 836 /** 837 * Identifies a signing algorithm where an MD5 digest is 838 * encrypted using an RSA private key; defined in PKCS #1. 839 * OID = 1.2.840.113549.1.1.4 840 */ 841 md5WithRSAEncryption_oid = 842 ObjectIdentifier.newInternal(md5WithRSAEncryption_data); 843 844 /** 845 * Identifies a signing algorithm where a SHA1 digest is 846 * encrypted using an RSA private key; defined by RSA DSI. 847 * OID = 1.2.840.113549.1.1.5 848 */ 849 sha1WithRSAEncryption_oid = 850 ObjectIdentifier.newInternal(sha1WithRSAEncryption_data); 851 852 /** 853 * Identifies a signing algorithm where a SHA1 digest is 854 * encrypted using an RSA private key; defined in NIST OIW. 855 * OID = 1.3.14.3.2.29 856 */ 857 sha1WithRSAEncryption_OIW_oid = 858 ObjectIdentifier.newInternal(sha1WithRSAEncryption_OIW_data); 859 860 /** 861 * Identifies a signing algorithm where a SHA256 digest is 862 * encrypted using an RSA private key; defined by PKCS #1. 863 * OID = 1.2.840.113549.1.1.11 864 */ 865 sha256WithRSAEncryption_oid = 866 ObjectIdentifier.newInternal(sha256WithRSAEncryption_data); 867 868 /** 869 * Identifies a signing algorithm where a SHA384 digest is 870 * encrypted using an RSA private key; defined by PKCS #1. 871 * OID = 1.2.840.113549.1.1.12 872 */ 873 sha384WithRSAEncryption_oid = 874 ObjectIdentifier.newInternal(sha384WithRSAEncryption_data); 875 876 /** 877 * Identifies a signing algorithm where a SHA512 digest is 878 * encrypted using an RSA private key; defined by PKCS #1. 879 * OID = 1.2.840.113549.1.1.13 880 */ 881 sha512WithRSAEncryption_oid = 882 ObjectIdentifier.newInternal(sha512WithRSAEncryption_data); 883 884 /** 885 * Identifies the FIPS 186 "Digital Signature Standard" (DSS), where a 886 * SHA digest is signed using the Digital Signing Algorithm (DSA). 887 * This should not be used. 888 * OID = 1.3.14.3.2.13 889 */ 890 shaWithDSA_OIW_oid = ObjectIdentifier.newInternal(shaWithDSA_OIW_data); 891 892 /** 893 * Identifies the FIPS 186 "Digital Signature Standard" (DSS), where a 894 * SHA1 digest is signed using the Digital Signing Algorithm (DSA). 895 * OID = 1.3.14.3.2.27 896 */ 897 sha1WithDSA_OIW_oid = ObjectIdentifier.newInternal(sha1WithDSA_OIW_data); 898 899 /** 900 * Identifies the FIPS 186 "Digital Signature Standard" (DSS), where a 901 * SHA1 digest is signed using the Digital Signing Algorithm (DSA). 902 * OID = 1.2.840.10040.4.3 903 */ 904 sha1WithDSA_oid = ObjectIdentifier.newInternal(dsaWithSHA1_PKIX_data); 905 906 nameTable.put(MD5_oid, "MD5"); 907 nameTable.put(MD2_oid, "MD2"); 908 nameTable.put(SHA_oid, "SHA"); 909 nameTable.put(SHA256_oid, "SHA256"); 910 nameTable.put(SHA384_oid, "SHA384"); 911 nameTable.put(SHA512_oid, "SHA512"); 912 nameTable.put(RSAEncryption_oid, "RSA"); 913 nameTable.put(RSA_oid, "RSA"); 914 nameTable.put(DH_oid, "Diffie-Hellman"); 915 nameTable.put(DH_PKIX_oid, "Diffie-Hellman"); 916 nameTable.put(DSA_oid, "DSA"); 917 nameTable.put(DSA_OIW_oid, "DSA"); 918 nameTable.put(EC_oid, "EC"); 919 nameTable.put(sha1WithECDSA_oid, "SHA1withECDSA"); 920 nameTable.put(sha224WithECDSA_oid, "SHA224withECDSA"); 921 nameTable.put(sha256WithECDSA_oid, "SHA256withECDSA"); 922 nameTable.put(sha384WithECDSA_oid, "SHA384withECDSA"); 923 nameTable.put(sha512WithECDSA_oid, "SHA512withECDSA"); 924 nameTable.put(md5WithRSAEncryption_oid, "MD5withRSA"); 925 nameTable.put(md2WithRSAEncryption_oid, "MD2withRSA"); 926 nameTable.put(sha1WithDSA_oid, "SHA1withDSA"); 927 nameTable.put(sha1WithDSA_OIW_oid, "SHA1withDSA"); 928 nameTable.put(shaWithDSA_OIW_oid, "SHA1withDSA"); 929 nameTable.put(sha1WithRSAEncryption_oid, "SHA1withRSA"); 930 nameTable.put(sha1WithRSAEncryption_OIW_oid, "SHA1withRSA"); 931 nameTable.put(sha256WithRSAEncryption_oid, "SHA256withRSA"); 932 nameTable.put(sha384WithRSAEncryption_oid, "SHA384withRSA"); 933 nameTable.put(sha512WithRSAEncryption_oid, "SHA512withRSA"); 934 nameTable.put(pbeWithMD5AndDES_oid, "PBEWithMD5AndDES"); 935 nameTable.put(pbeWithMD5AndRC2_oid, "PBEWithMD5AndRC2"); 936 nameTable.put(pbeWithSHA1AndDES_oid, "PBEWithSHA1AndDES"); 937 nameTable.put(pbeWithSHA1AndRC2_oid, "PBEWithSHA1AndRC2"); 938 nameTable.put(pbeWithSHA1AndDESede_oid, "PBEWithSHA1AndDESede"); 939 nameTable.put(pbeWithSHA1AndRC2_40_oid, "PBEWithSHA1AndRC2_40"); 940 } 941 942 /** 943 * Creates a signature algorithm name from a digest algorithm 944 * name and a encryption algorithm name. 945 */ 946 public static String makeSigAlg(String digAlg, String encAlg) { 947 digAlg = digAlg.replace("-", "").toUpperCase(Locale.ENGLISH); 948 if (digAlg.equalsIgnoreCase("SHA")) digAlg = "SHA1"; 949 950 encAlg = encAlg.toUpperCase(Locale.ENGLISH); 951 if (encAlg.equals("EC")) encAlg = "ECDSA"; 952 953 return digAlg + "with" + encAlg; 954 } 955 956 /** 957 * Extracts the encryption algorithm name from a signature 958 * algorithm name. 959 */ 960 public static String getEncAlgFromSigAlg(String signatureAlgorithm) { 961 signatureAlgorithm = signatureAlgorithm.toUpperCase(Locale.ENGLISH); 962 int with = signatureAlgorithm.indexOf("WITH"); 963 String keyAlgorithm = null; 964 if (with > 0) { 965 int and = signatureAlgorithm.indexOf("AND", with + 4); 966 if (and > 0) { 967 keyAlgorithm = signatureAlgorithm.substring(with + 4, and); 968 } else { 969 keyAlgorithm = signatureAlgorithm.substring(with + 4); 970 } 971 if (keyAlgorithm.equalsIgnoreCase("ECDSA")) { 972 keyAlgorithm = "EC"; 973 } 974 } 975 return keyAlgorithm; 976 } 977 978 /** 979 * Extracts the digest algorithm name from a signature 980 * algorithm name. 981 */ 982 public static String getDigAlgFromSigAlg(String signatureAlgorithm) { 983 signatureAlgorithm = signatureAlgorithm.toUpperCase(Locale.ENGLISH); 984 int with = signatureAlgorithm.indexOf("WITH"); 985 if (with > 0) { 986 return signatureAlgorithm.substring(0, with); 987 } 988 return null; 989 } 990 } 991
