java - BouncyCaSTLe没有找到它提供的算法？

我在玩BouncyCastle 1.46，令我惊讶的是，以下代码段中的catch块经常跳闸。

Security.addProvider(new BouncyCastleProvider());

final Set<String> found = new HashSet<String>();
final Set<String> missing = new HashSet<String>();

final DefaultSignatureAlgorithmIdentifierFinder finder = new DefaultSignatureAlgorithmIdentifierFinder();
for (Service service : new BouncyCastleProvider().getServices()) {
    if ("Signature".equals(service.getType())) {
        final String algorithm = service.getAlgorithm();
        try {
            finder.find(algorithm);
            found.add(algorithm);
        } catch (IllegalArgumentException ex) {
            missing.add(algorithm);
        }
    }
}

System.out.println("Found: " + found);
System.out.println("Missing: " + missing);

我似乎无法通过Finder使用大多数算法，即使存在提供这些算法的服务也是如此。我究竟做错了什么？

更新我对代码做了一些更改以更好地说明问题。可能感兴趣的是，我正在使用BouncyCastle的JDK1.5版本。上面的代码给出以下输出:

找到:[RIPEMD256WithRSAEncryption，MD5WithRSAEncryption，MD2WithRSAEncryption，SHA384WithRSAEncryption，SHA224WITHECDSA，SHA384WITHDSA，SHA256WITHDSA，SHA512WithRSAEncryption，SHA512WITHDSA，RIPEMD160WithRSAEncryption，SHA224WithRSAEncryption，SHAWithWIPEDSA，SHAWithWIPEDSA，SHAwithWIDSDS，SHASHAWIWIDSCD，SHASHAWITHECD

丢失:[SHA1WITHECNR，NONEwithECDSA，ECDSA，SHA512withRSA / PSS，RIPEMD160WITHECDSA，RSA，GOST3410，SHA256WITHECNR，MD5withRSA / ISO9796-2，SHA1WITHCVC-ECDSA，SHA384withRSA / PSS，SHA1withRSA / PSSTHESCS，VCS-PSS，VCS-DSS，MD4WithRSASASS ，SHA1withRSA / ISO9796-2，SHA224withRSA / PSS，SHA224WITHCVC-ECDSA，RAWRSASSA-PSS，SHA256withRSA / PSS，NONEWITHDSA，SHA384WITHECNR，RIPEMD160withRSA / ISO9796-2，DSA，ECGOST3410，SHA224WITHECNR，1.2.840.1135491.1。

最佳答案

我认为DefaultSignatureAlgorithmIdentifierFinder是bcmail API的一部分。它返回此API识别的算法标识符。 (请检查Cryptographic Message Syntax)另一方面，有弹性的种姓提供程序提供了更多算法。您可以检查DefaultSignatureAlgorithmIdentifierFinder的来源，其中已将公认的算法进行了硬编码:

algorithms.put("MD2WITHRSAENCRYPTION", PKCSObjectIdentifiers.md2WithRSAEncryption);
algorithms.put("MD2WITHRSA", PKCSObjectIdentifiers.md2WithRSAEncryption);
algorithms.put("MD5WITHRSAENCRYPTION", PKCSObjectIdentifiers.md5WithRSAEncryption);
algorithms.put("MD5WITHRSA", PKCSObjectIdentifiers.md5WithRSAEncryption);
algorithms.put("SHA1WITHRSAENCRYPTION", PKCSObjectIdentifiers.sha1WithRSAEncryption);
algorithms.put("SHA1WITHRSA", PKCSObjectIdentifiers.sha1WithRSAEncryption);
algorithms.put("SHA224WITHRSAENCRYPTION", PKCSObjectIdentifiers.sha224WithRSAEncryption);
algorithms.put("SHA224WITHRSA", PKCSObjectIdentifiers.sha224WithRSAEncryption);
algorithms.put("SHA256WITHRSAENCRYPTION", PKCSObjectIdentifiers.sha256WithRSAEncryption);
algorithms.put("SHA256WITHRSA", PKCSObjectIdentifiers.sha256WithRSAEncryption);
algorithms.put("SHA384WITHRSAENCRYPTION", PKCSObjectIdentifiers.sha384WithRSAEncryption);
algorithms.put("SHA384WITHRSA", PKCSObjectIdentifiers.sha384WithRSAEncryption);
algorithms.put("SHA512WITHRSAENCRYPTION", PKCSObjectIdentifiers.sha512WithRSAEncryption);
algorithms.put("SHA512WITHRSA", PKCSObjectIdentifiers.sha512WithRSAEncryption);
algorithms.put("SHA1WITHRSAANDMGF1", PKCSObjectIdentifiers.id_RSASSA_PSS);
algorithms.put("SHA224WITHRSAANDMGF1", PKCSObjectIdentifiers.id_RSASSA_PSS);
algorithms.put("SHA256WITHRSAANDMGF1", PKCSObjectIdentifiers.id_RSASSA_PSS);
algorithms.put("SHA384WITHRSAANDMGF1", PKCSObjectIdentifiers.id_RSASSA_PSS);
algorithms.put("SHA512WITHRSAANDMGF1", PKCSObjectIdentifiers.id_RSASSA_PSS);
algorithms.put("RIPEMD160WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.rsaSignatureWithripemd160);
algorithms.put("RIPEMD160WITHRSA", TeleTrusTObjectIdentifiers.rsaSignatureWithripemd160);
algorithms.put("RIPEMD128WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.rsaSignatureWithripemd128);
algorithms.put("RIPEMD128WITHRSA", TeleTrusTObjectIdentifiers.rsaSignatureWithripemd128);
algorithms.put("RIPEMD256WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.rsaSignatureWithripemd256);
algorithms.put("RIPEMD256WITHRSA", TeleTrusTObjectIdentifiers.rsaSignatureWithripemd256);
algorithms.put("SHA1WITHDSA", X9ObjectIdentifiers.id_dsa_with_sha1);
algorithms.put("DSAWITHSHA1", X9ObjectIdentifiers.id_dsa_with_sha1);
algorithms.put("SHA224WITHDSA", NISTObjectIdentifiers.dsa_with_sha224);
algorithms.put("SHA256WITHDSA", NISTObjectIdentifiers.dsa_with_sha256);
algorithms.put("SHA384WITHDSA", NISTObjectIdentifiers.dsa_with_sha384);
algorithms.put("SHA512WITHDSA", NISTObjectIdentifiers.dsa_with_sha512);
algorithms.put("SHA1WITHECDSA", X9ObjectIdentifiers.ecdsa_with_SHA1);
algorithms.put("ECDSAWITHSHA1", X9ObjectIdentifiers.ecdsa_with_SHA1);
algorithms.put("SHA224WITHECDSA", X9ObjectIdentifiers.ecdsa_with_SHA224);
algorithms.put("SHA256WITHECDSA", X9ObjectIdentifiers.ecdsa_with_SHA256);
algorithms.put("SHA384WITHECDSA", X9ObjectIdentifiers.ecdsa_with_SHA384);
algorithms.put("SHA512WITHECDSA", X9ObjectIdentifiers.ecdsa_with_SHA512);
algorithms.put("GOST3411WITHGOST3410", CryptoProObjectIdentifiers.gostR3411_94_with_gostR3410_94);
algorithms.put("GOST3411WITHGOST3410-94", CryptoProObjectIdentifiers.gostR3411_94_with_gostR3410_94);
algorithms.put("GOST3411WITHECGOST3410", CryptoProObjectIdentifiers.gostR3411_94_with_gostR3410_2001);
algorithms.put("GOST3411WITHECGOST3410-2001", CryptoProObjectIdentifiers.gostR3411_94_with_gostR3410_2001);
algorithms.put("GOST3411WITHGOST3410-2001", CryptoProObjectIdentifiers.gostR3411_94_with_gostR3410_2001);

干杯!