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[英]Different results when encrypting with Bouncy Castle and Node.js
[英]Different file size when encrypting with Bouncy Castle (In Java) and GPG4Win
這是問題所在:我使用Bouncy Castle(Java)庫對文件進行加密,但是與使用其他實用程序(即GPG4Win,FileAssurity)相比,我獲得的加密文件的大小要大得多。 與我的代碼生成的文件相比,這些實用程序生成的加密文件大小很小。
我想知道使用RSA公鑰而不是DSA時是否有不同的加密方式。
附加信息:
公鑰證書類型:2,047位RSA
我用來加密數據文件的代碼(文件被讀取並作為字節數組傳遞):
private static byte[] encrypt(byte[] clearData, PGPPublicKey encKey, boolean withIntegrityCheck, boolean armor)
throws IOException, PGPException, NoSuchProviderException {
ByteArrayOutputStream encOut = new ByteArrayOutputStream();
OutputStream out = encOut;
if(armor) {
out = new ArmoredOutputStream(out);
}
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
PGPLiteralDataGenerator lData = new PGPLiteralDataGenerator();
OutputStream pOut = lData.open(bOut/*cos*/, // the compressed output stream
PGPLiteralData.BINARY, PGPLiteralData.CONSOLE, // "filename" to store (if provided)
clearData.length, // length of clear data
new Date() // current time
);
pOut.write(clearData);
PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(PGPEncryptedData.CAST5, withIntegrityCheck, new SecureRandom(), C_BC_PROVIDER_NAME);
cPk.addMethod(encKey);
byte[] bytes = bOut.toByteArray();
bOut.close();
OutputStream cOut = cPk.open(out, bytes.length);
cOut.write(bytes);
cOut.close();
out.close();
return encOut.toByteArray();
} // encrypt
嘗試:
import org.bouncycastle.openpgp.PGPCompressedDataGenerator;
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