public static PKCS10CertificationRequest genPKCS10(KeyPair kp) throws Exception {
String sigName = "SHA1withRSA";
X500NameBuilder x500NameBld = new X500NameBuilder(BCStyle.INSTANCE);
x500NameBld.addRDN(BCStyle.C, "AU");
x500NameBld.addRDN(BCStyle.ST, "Victoria");
x500NameBld.addRDN(BCStyle.L, "Melbourne");
x500NameBld.addRDN(BCStyle.O, "The Legion of the Bouncy Castle");
X500Name subject = x500NameBld.build();
PKCS10CertificationRequestBuilder requestBuilder =
new JcaPKCS10CertificationRequestBuilder(subject, kp.getPublic());
ExtensionsGenerator extGen = new ExtensionsGenerator();
extGen.addExtension(
Extension.subjectAlternativeName,
false,
new GeneralNames(
new GeneralName(GeneralName.rfc822Name, "*****@*****.**")));
requestBuilder.addAttribute(
PKCSObjectIdentifiers.pkcs_9_at_extensionRequest, extGen.generate());
PKCS10CertificationRequest p10 =
requestBuilder.build(
new JcaContentSignerBuilder(sigName).setProvider("BC").build(kp.getPrivate()));
if (!p10.isSignatureValid(
new JcaContentVerifierProviderBuilder().setProvider("BC").build(kp.getPublic()))) {
System.out.println(sigName + ": Failed verify check.");
} else {
System.out.println(sigName + ": PKCS#10 request verified.");
}
return p10;
}
private static String csr() {
try {
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
keyGen.initialize(2048);
KeyPair keyPair = keyGen.generateKeyPair();
X500Principal subject =
new X500Principal(
"CN = edea87b4-034d-48dc-94dd-e7cdcfdde370/10562468, OU = fgdfgretertgdfg, O = VW, L = US");
ContentSigner signer = new JcaContentSignerBuilder("SHA1withRSA").build(keyPair.getPrivate());
PKCS10CertificationRequestBuilder builder =
new JcaPKCS10CertificationRequestBuilder(subject, keyPair.getPublic());
PKCS10CertificationRequest csr = builder.build(signer);
String type = "CERTIFICATE REQUEST";
PemObject pem = new PemObject(type, csr.getEncoded());
StringWriter str = new StringWriter();
PEMWriter pemWriter = new PEMWriter(str);
pemWriter.writeObject(pem);
pemWriter.close();
str.close();
Log.d("Test", "" + str);
return Base64Util.getStringAsBase64(str.toString());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (OperatorCreationException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "";
}