diff options
Diffstat (limited to 'pg/src/main/jdk1.1/org/bouncycastle/openpgp/operator/jcajce/OperatorHelper.java')
| -rw-r--r-- | pg/src/main/jdk1.1/org/bouncycastle/openpgp/operator/jcajce/OperatorHelper.java | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/pg/src/main/jdk1.1/org/bouncycastle/openpgp/operator/jcajce/OperatorHelper.java b/pg/src/main/jdk1.1/org/bouncycastle/openpgp/operator/jcajce/OperatorHelper.java deleted file mode 100644 index 52023662..00000000 --- a/pg/src/main/jdk1.1/org/bouncycastle/openpgp/operator/jcajce/OperatorHelper.java +++ /dev/null @@ -1,220 +0,0 @@ -package org.bouncycastle.openpgp.operator.jcajce; - -import java.io.InputStream; -import java.security.GeneralSecurityException; -import java.security.NoSuchAlgorithmException; -import java.security.NoSuchProviderException; -import java.security.KeyFactory; -import java.security.MessageDigest; -import java.security.Signature; - -import javax.crypto.Cipher; -import javax.crypto.CipherInputStream; -import javax.crypto.SecretKey; -import javax.crypto.spec.IvParameterSpec; -import javax.crypto.spec.SecretKeySpec; - -import org.bouncycastle.bcpg.PublicKeyAlgorithmTags; -import org.bouncycastle.bcpg.SymmetricKeyAlgorithmTags; -import org.bouncycastle.jcajce.util.JcaJceHelper; -import org.bouncycastle.openpgp.PGPException; -import org.bouncycastle.openpgp.PGPPublicKey; -import org.bouncycastle.openpgp.operator.PGPDataDecryptor; -import org.bouncycastle.openpgp.operator.PGPDigestCalculator; - -class OperatorHelper -{ - private JcaJceHelper helper; - - OperatorHelper(JcaJceHelper helper) - { - this.helper = helper; - } - - MessageDigest createDigest(int algorithm) - throws GeneralSecurityException, PGPException - { - MessageDigest dig; - - try - { - dig = helper.createDigest(PGPUtil.getDigestName(algorithm)); - } - catch (NoSuchAlgorithmException e) - { - throw new PGPException("cannot find provider: " + e.getMessage(), e); - } - catch (NoSuchProviderException e) - { - throw new PGPException("cannot find provider: " + e.getMessage(), e); - } - - return dig; - } - - KeyFactory createKeyFactory(String algorithm) - throws GeneralSecurityException, PGPException - { - try - { - return helper.createKeyFactory(algorithm); - } - catch (NoSuchAlgorithmException e) - { - throw new PGPException("cannot find provider: " + e.getMessage(), e); - } - catch (NoSuchProviderException e) - { - throw new PGPException("cannot find provider: " + e.getMessage(), e); - } - } - - PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key) - throws PGPException - { - try - { - SecretKey secretKey = new SecretKeySpec(key, PGPUtil.getSymmetricCipherName(encAlgorithm)); - - final Cipher c = createStreamCipher(encAlgorithm, withIntegrityPacket); - - byte[] iv = new byte[c.getBlockSize()]; - - c.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(iv)); - - return new PGPDataDecryptor() - { - public InputStream getInputStream(InputStream in) - { - return new CipherInputStream(in, c); - } - - public int getBlockSize() - { - return c.getBlockSize(); - } - - public PGPDigestCalculator getIntegrityCalculator() - { - return new SHA1PGPDigestCalculator(); - } - }; - } - catch (PGPException e) - { - throw e; - } - catch (Exception e) - { - throw new PGPException("Exception creating cipher", e); - } - } - - Cipher createStreamCipher(int encAlgorithm, boolean withIntegrityPacket) - throws PGPException - { - String mode = (withIntegrityPacket) - ? "CFB" - : "OpenPGPCFB"; - - String cName = PGPUtil.getSymmetricCipherName(encAlgorithm) - + "/" + mode + "/NoPadding"; - - return createCipher(cName); - } - - Cipher createCipher(String cipherName) - throws PGPException - { - try - { - return helper.createCipher(cipherName); - } - catch (Exception e) - { - throw new PGPException("cannot create cipher: " + e.getMessage(), e); - } - } - - Cipher createPublicKeyCipher(int encAlgorithm) - throws PGPException - { - switch (encAlgorithm) - { - case PGPPublicKey.RSA_ENCRYPT: - case PGPPublicKey.RSA_GENERAL: - return createCipher("RSA/ECB/PKCS1Padding"); - case PGPPublicKey.ELGAMAL_ENCRYPT: - case PGPPublicKey.ELGAMAL_GENERAL: - return createCipher("ElGamal/ECB/PKCS1Padding"); - case PGPPublicKey.DSA: - throw new PGPException("Can't use DSA for encryption."); - case PGPPublicKey.ECDSA: - throw new PGPException("Can't use ECDSA for encryption."); - default: - throw new PGPException("unknown asymmetric algorithm: " + encAlgorithm); - } - } - - Cipher createKeyWrapper(int encAlgorithm) - throws PGPException - { - try - { - switch (encAlgorithm) - { - case SymmetricKeyAlgorithmTags.AES_128: - case SymmetricKeyAlgorithmTags.AES_192: - case SymmetricKeyAlgorithmTags.AES_256: - return helper.createCipher("AESWrap"); - default: - throw new PGPException("unknown wrap algorithm: " + encAlgorithm); - } - } - catch (Exception e) - { - throw new PGPException("cannot create cipher: " + e.getMessage(), e); - } - } - - private Signature createSignature(String cipherName) - throws PGPException - { - try - { - return helper.createSignature(cipherName); - } - catch (Exception e) - { - throw new PGPException("cannot create signature: " + e.getMessage(), e); - } - } - - public Signature createSignature(int keyAlgorithm, int hashAlgorithm) - throws PGPException - { - String encAlg; - - switch (keyAlgorithm) - { - case PublicKeyAlgorithmTags.RSA_GENERAL: - case PublicKeyAlgorithmTags.RSA_SIGN: - encAlg = "RSA"; - break; - case PublicKeyAlgorithmTags.DSA: - encAlg = "DSA"; - break; - case PublicKeyAlgorithmTags.ELGAMAL_ENCRYPT: // in some malformed cases. - case PublicKeyAlgorithmTags.ELGAMAL_GENERAL: - encAlg = "ElGamal"; - break; - case PublicKeyAlgorithmTags.ECDSA: - encAlg = "ECDSA"; - break; - default: - throw new PGPException("unknown algorithm tag in signature:" + keyAlgorithm); - } - - return createSignature(PGPUtil.getDigestName(hashAlgorithm) + "with" + encAlg); - } -} |