| package org.bouncycastle.cms; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.bouncycastle.asn1.DERNull; |
| import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers; |
| import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers; |
| import org.bouncycastle.asn1.teletrust.TeleTrusTObjectIdentifiers; |
| import org.bouncycastle.asn1.x509.AlgorithmIdentifier; |
| |
| public class DefaultCMSSignatureEncryptionAlgorithmFinder |
| implements CMSSignatureEncryptionAlgorithmFinder |
| { |
| private static final Set RSA_PKCS1d5 = new HashSet(); |
| |
| static |
| { |
| // BEGIN android-removed |
| // RSA_PKCS1d5.add(PKCSObjectIdentifiers.md2WithRSAEncryption); |
| // RSA_PKCS1d5.add(PKCSObjectIdentifiers.md4WithRSAEncryption); |
| // END android-removed |
| RSA_PKCS1d5.add(PKCSObjectIdentifiers.md5WithRSAEncryption); |
| RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha1WithRSAEncryption); |
| RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha224WithRSAEncryption); |
| RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha256WithRSAEncryption); |
| RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha384WithRSAEncryption); |
| RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha512WithRSAEncryption); |
| // BEGIN android-removed |
| // RSA_PKCS1d5.add(OIWObjectIdentifiers.md4WithRSAEncryption); |
| // RSA_PKCS1d5.add(OIWObjectIdentifiers.md4WithRSA); |
| // END android-removed |
| RSA_PKCS1d5.add(OIWObjectIdentifiers.md5WithRSA); |
| RSA_PKCS1d5.add(OIWObjectIdentifiers.sha1WithRSA); |
| // BEGIN android-removed |
| // RSA_PKCS1d5.add(TeleTrusTObjectIdentifiers.rsaSignatureWithripemd128); |
| // RSA_PKCS1d5.add(TeleTrusTObjectIdentifiers.rsaSignatureWithripemd160); |
| // RSA_PKCS1d5.add(TeleTrusTObjectIdentifiers.rsaSignatureWithripemd256); |
| // END android-removed |
| } |
| |
| public AlgorithmIdentifier findEncryptionAlgorithm(AlgorithmIdentifier signatureAlgorithm) |
| { |
| // RFC3370 section 3.2 |
| if (RSA_PKCS1d5.contains(signatureAlgorithm.getAlgorithm())) |
| { |
| return new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, DERNull.INSTANCE); |
| } |
| |
| return signatureAlgorithm; |
| } |
| } |