@Override public void setKeySize(int keyBits) { // Microsoft Base Cryptographic Provider is limited up to 40 bits // http://msdn.microsoft.com/en-us/library/windows/desktop/aa375599(v=vs.85).aspx boolean found = false; for (int size : getCipherAlgorithm().allowedKeySize) { if (size == keyBits) { found = true; break; } } if (!found) { throw new EncryptedDocumentException("invalid keysize "+keyBits+" for cipher algorithm "+getCipherAlgorithm()); } super.setKeySize(keyBits); if (keyBits > 40) { setCspName("Microsoft Enhanced Cryptographic Provider v1.0"); } else { setCspName(CipherProvider.rc4.cipherProviderName); } }
/** * initialize the builder from a stream */ @Override public void initialize(EncryptionInfo info, LittleEndianInput dis) throws IOException { /* int hSize = */ dis.readInt(); CryptoAPIEncryptionHeader header = new CryptoAPIEncryptionHeader(dis); info.setHeader(header); info.setVerifier(new CryptoAPIEncryptionVerifier(dis, header)); CryptoAPIDecryptor dec = new CryptoAPIDecryptor(); dec.setEncryptionInfo(info); info.setDecryptor(dec); CryptoAPIEncryptor enc = new CryptoAPIEncryptor(); enc.setEncryptionInfo(info); info.setEncryptor(enc); }
@SuppressWarnings("resource") @Override public void serialize(LittleEndianOutput out) { out.writeShort(encryptionType); byte data[] = new byte[1024]; LittleEndianByteArrayOutputStream bos = new LittleEndianByteArrayOutputStream(data, 0); // NOSONAR switch (encryptionInfo.getEncryptionMode()) { case xor: ((XOREncryptionHeader)encryptionInfo.getHeader()).write(bos); ((XOREncryptionVerifier)encryptionInfo.getVerifier()).write(bos); break; case binaryRC4: out.writeShort(encryptionInfo.getVersionMajor()); out.writeShort(encryptionInfo.getVersionMinor()); ((BinaryRC4EncryptionHeader)encryptionInfo.getHeader()).write(bos); ((BinaryRC4EncryptionVerifier)encryptionInfo.getVerifier()).write(bos); break; case cryptoAPI: out.writeShort(encryptionInfo.getVersionMajor()); out.writeShort(encryptionInfo.getVersionMinor()); out.writeInt(encryptionInfo.getEncryptionFlags()); ((CryptoAPIEncryptionHeader)encryptionInfo.getHeader()).write(bos); ((CryptoAPIEncryptionVerifier)encryptionInfo.getVerifier()).write(bos); break; default: throw new EncryptedDocumentException("not supported"); } out.write(data, 0, bos.getWriteIndex()); }
/** * initialize the builder from scratch */ @Override public void initialize(EncryptionInfo info, CipherAlgorithm cipherAlgorithm, HashAlgorithm hashAlgorithm, int keyBits, int blockSize, ChainingMode chainingMode) { if (cipherAlgorithm == null) { cipherAlgorithm = CipherAlgorithm.rc4; } if (hashAlgorithm == null) { hashAlgorithm = HashAlgorithm.sha1; } if (keyBits == -1) { keyBits = 0x28; } assert(cipherAlgorithm == CipherAlgorithm.rc4 && hashAlgorithm == HashAlgorithm.sha1); info.setHeader(new CryptoAPIEncryptionHeader(cipherAlgorithm, hashAlgorithm, keyBits, blockSize, chainingMode)); info.setVerifier(new CryptoAPIEncryptionVerifier(cipherAlgorithm, hashAlgorithm, keyBits, blockSize, chainingMode)); CryptoAPIDecryptor dec = new CryptoAPIDecryptor(); dec.setEncryptionInfo(info); info.setDecryptor(dec); CryptoAPIEncryptor enc = new CryptoAPIEncryptor(); enc.setEncryptionInfo(info); info.setEncryptor(enc); } }
/** * Write the contents of the record back, so it can be written * to disk */ public void writeOut(OutputStream out) throws IOException { // Data byte data[] = new byte[1024]; LittleEndianByteArrayOutputStream bos = new LittleEndianByteArrayOutputStream(data, 0); bos.writeShort(ei.getVersionMajor()); bos.writeShort(ei.getVersionMinor()); bos.writeInt(ei.getEncryptionFlags()); ((CryptoAPIEncryptionHeader)ei.getHeader()).write(bos); ((CryptoAPIEncryptionVerifier)ei.getVerifier()).write(bos); // Header LittleEndian.putInt(_header, 4, bos.getWriteIndex()); out.write(_header); out.write(data, 0, bos.getWriteIndex()); bos.close(); }
@Override public void setKeySize(int keyBits) { // Microsoft Base Cryptographic Provider is limited up to 40 bits // http://msdn.microsoft.com/en-us/library/windows/desktop/aa375599(v=vs.85).aspx boolean found = false; for (int size : getCipherAlgorithm().allowedKeySize) { if (size == keyBits) { found = true; break; } } if (!found) { throw new EncryptedDocumentException("invalid keysize "+keyBits+" for cipher algorithm "+getCipherAlgorithm()); } super.setKeySize(keyBits); if (keyBits > 40) { setCspName("Microsoft Enhanced Cryptographic Provider v1.0"); } else { setCspName(CipherProvider.rc4.cipherProviderName); } }
/** * initialize the builder from a stream */ @Override public void initialize(EncryptionInfo info, LittleEndianInput dis) throws IOException { /* int hSize = */ dis.readInt(); CryptoAPIEncryptionHeader header = new CryptoAPIEncryptionHeader(dis); info.setHeader(header); info.setVerifier(new CryptoAPIEncryptionVerifier(dis, header)); CryptoAPIDecryptor dec = new CryptoAPIDecryptor(); dec.setEncryptionInfo(info); info.setDecryptor(dec); CryptoAPIEncryptor enc = new CryptoAPIEncryptor(); enc.setEncryptionInfo(info); info.setEncryptor(enc); }
@SuppressWarnings("resource") @Override public void serialize(LittleEndianOutput out) { out.writeShort(encryptionType); byte data[] = new byte[1024]; LittleEndianByteArrayOutputStream bos = new LittleEndianByteArrayOutputStream(data, 0); // NOSONAR switch (encryptionInfo.getEncryptionMode()) { case xor: ((XOREncryptionHeader)encryptionInfo.getHeader()).write(bos); ((XOREncryptionVerifier)encryptionInfo.getVerifier()).write(bos); break; case binaryRC4: out.writeShort(encryptionInfo.getVersionMajor()); out.writeShort(encryptionInfo.getVersionMinor()); ((BinaryRC4EncryptionHeader)encryptionInfo.getHeader()).write(bos); ((BinaryRC4EncryptionVerifier)encryptionInfo.getVerifier()).write(bos); break; case cryptoAPI: out.writeShort(encryptionInfo.getVersionMajor()); out.writeShort(encryptionInfo.getVersionMinor()); out.writeInt(encryptionInfo.getEncryptionFlags()); ((CryptoAPIEncryptionHeader)encryptionInfo.getHeader()).write(bos); ((CryptoAPIEncryptionVerifier)encryptionInfo.getVerifier()).write(bos); break; default: throw new EncryptedDocumentException("not supported"); } out.write(data, 0, bos.getWriteIndex()); }
/** * initialize the builder from scratch */ @Override public void initialize(EncryptionInfo info, CipherAlgorithm cipherAlgorithm, HashAlgorithm hashAlgorithm, int keyBits, int blockSize, ChainingMode chainingMode) { if (cipherAlgorithm == null) { cipherAlgorithm = CipherAlgorithm.rc4; } if (hashAlgorithm == null) { hashAlgorithm = HashAlgorithm.sha1; } if (keyBits == -1) { keyBits = 0x28; } assert(cipherAlgorithm == CipherAlgorithm.rc4 && hashAlgorithm == HashAlgorithm.sha1); info.setHeader(new CryptoAPIEncryptionHeader(cipherAlgorithm, hashAlgorithm, keyBits, blockSize, chainingMode)); info.setVerifier(new CryptoAPIEncryptionVerifier(cipherAlgorithm, hashAlgorithm, keyBits, blockSize, chainingMode)); CryptoAPIDecryptor dec = new CryptoAPIDecryptor(); dec.setEncryptionInfo(info); info.setDecryptor(dec); CryptoAPIEncryptor enc = new CryptoAPIEncryptor(); enc.setEncryptionInfo(info); info.setEncryptor(enc); } }