,能夠生成具有BouncyCastle的文庫的RFC3161時間戳令牌。
首先創建一個TimestampRequest。對於你的情況,它只是摘要算法和摘要值的包裝。
byte[] document = /* ... */
byte[] digest = MessageDigest.getInstance("SHA256").digest(document);
TimeStampRequestGenerator tsReqGen = new TimeStampRequestGenerator();
TimeStampRequest tsReq = tsReqGen.generate(CMSAlgorithm.SHA256, digest);
然後生成令牌
DigestCalculator dgCalc = new JcaDigestCalculatorProviderBuilder().build();
ContentSigner signer = new JcaContentSignerBuilder().build(getPrivateKey());
SignerInfoGenerator siGen = new JcaSignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder()).build(signer, getCertificate());
ASN1ObjectIdentifier policy = new ASN1ObjectIdentifier("1.2.3.4.5.6"); // Replace by your timestamping policy OID
TimeStampTokenGenerator tstGen = new TimeStampTokenGenerator(siGen, dgCalc, policy);
/* Set the parameters e.g. set the accuracy or include the signing certificate */
TimeStampToken tst = tstGen.generate(tsReq, generateSerialNumber(), new Date());
byte[] encoding = tst.getEncoded();
來源
2014-02-05 15:05:34
Jcs