diff options
Diffstat (limited to 'libraries/spongycastle/pkix/src/main/jdk1.2/org/spongycastle/cms/jcajce/JceCMSContentEncryptorBuilder.java')
-rw-r--r-- | libraries/spongycastle/pkix/src/main/jdk1.2/org/spongycastle/cms/jcajce/JceCMSContentEncryptorBuilder.java | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/libraries/spongycastle/pkix/src/main/jdk1.2/org/spongycastle/cms/jcajce/JceCMSContentEncryptorBuilder.java b/libraries/spongycastle/pkix/src/main/jdk1.2/org/spongycastle/cms/jcajce/JceCMSContentEncryptorBuilder.java deleted file mode 100644 index 60bd74a75..000000000 --- a/libraries/spongycastle/pkix/src/main/jdk1.2/org/spongycastle/cms/jcajce/JceCMSContentEncryptorBuilder.java +++ /dev/null @@ -1,161 +0,0 @@ -package org.spongycastle.cms.jcajce; - -import java.io.OutputStream; -import java.security.AlgorithmParameters; -import java.security.GeneralSecurityException; -import java.security.Provider; -import java.security.SecureRandom; -import java.util.HashMap; -import java.util.Map; - -import javax.crypto.Cipher; -import javax.crypto.CipherOutputStream; -import javax.crypto.KeyGenerator; -import javax.crypto.SecretKey; - -import org.spongycastle.asn1.ASN1ObjectIdentifier; -import org.spongycastle.asn1.x509.AlgorithmIdentifier; -import org.spongycastle.cms.CMSAlgorithm; -import org.spongycastle.cms.CMSException; -import org.spongycastle.operator.GenericKey; -import org.spongycastle.operator.OutputEncryptor; -import org.spongycastle.util.Integers; - -public class JceCMSContentEncryptorBuilder -{ - private static Map keySizes = new HashMap(); - - static - { - keySizes.put(CMSAlgorithm.AES128_CBC, Integers.valueOf(128)); - keySizes.put(CMSAlgorithm.AES192_CBC, Integers.valueOf(192)); - keySizes.put(CMSAlgorithm.AES256_CBC, Integers.valueOf(256)); - - keySizes.put(CMSAlgorithm.CAMELLIA128_CBC, Integers.valueOf(128)); - keySizes.put(CMSAlgorithm.CAMELLIA192_CBC, Integers.valueOf(192)); - keySizes.put(CMSAlgorithm.CAMELLIA256_CBC, Integers.valueOf(256)); - } - - private static int getKeySize(ASN1ObjectIdentifier oid) - { - Integer size = (Integer)keySizes.get(oid); - - if (size != null) - { - return size.intValue(); - } - - return -1; - } - - private ASN1ObjectIdentifier encryptionOID; - private int keySize; - - private EnvelopedDataHelper helper = new EnvelopedDataHelper(new DefaultJcaJceExtHelper()); - private SecureRandom random; - - public JceCMSContentEncryptorBuilder(ASN1ObjectIdentifier encryptionOID) - { - this(encryptionOID, getKeySize(encryptionOID)); - } - - public JceCMSContentEncryptorBuilder(ASN1ObjectIdentifier encryptionOID, int keySize) - { - this.encryptionOID = encryptionOID; - this.keySize = keySize; - } - - public JceCMSContentEncryptorBuilder setProvider(Provider provider) - { - this.helper = new EnvelopedDataHelper(new ProviderJcaJceExtHelper(provider)); - - return this; - } - - public JceCMSContentEncryptorBuilder setProvider(String providerName) - { - this.helper = new EnvelopedDataHelper(new NamedJcaJceExtHelper(providerName)); - - return this; - } - - public JceCMSContentEncryptorBuilder setSecureRandom(SecureRandom random) - { - this.random = random; - - return this; - } - - public OutputEncryptor build() - throws CMSException - { - return new CMSOutputEncryptor(encryptionOID, keySize, random); - } - - private class CMSOutputEncryptor - implements OutputEncryptor - { - private SecretKey encKey; - private AlgorithmIdentifier algorithmIdentifier; - private Cipher cipher; - - CMSOutputEncryptor(ASN1ObjectIdentifier encryptionOID, int keySize, SecureRandom random) - throws CMSException - { - KeyGenerator keyGen = helper.createKeyGenerator(encryptionOID); - - if (random == null) - { - random = new SecureRandom(); - } - - if (keySize < 0) - { - keyGen.init(random); - } - else - { - keyGen.init(keySize, random); - } - - cipher = helper.createCipher(encryptionOID); - encKey = keyGen.generateKey(); - AlgorithmParameters params = helper.generateParameters(encryptionOID, encKey, random); - - try - { - cipher.init(Cipher.ENCRYPT_MODE, encKey, params, random); - } - catch (GeneralSecurityException e) - { - throw new CMSException("unable to initialize cipher: " + e.getMessage(), e); - } - - // - // If params are null we try and second guess on them as some providers don't provide - // algorithm parameter generation explicity but instead generate them under the hood. - // - if (params == null) - { - params = cipher.getParameters(); - } - - algorithmIdentifier = helper.getAlgorithmIdentifier(encryptionOID, params); - } - - public AlgorithmIdentifier getAlgorithmIdentifier() - { - return algorithmIdentifier; - } - - public OutputStream getOutputStream(OutputStream dOut) - { - return new CipherOutputStream(dOut, cipher); - } - - public GenericKey getKey() - { - return new GenericKey(encKey); - } - } -} |