bouncycastle

来源： https://stackoverflow.com/questions/52296243/decrypt-apple-business-chat-auth-token

问题 I have a root CA, a set of intermediate CAs and an end entity. All represented as org.bouncycastle.cert.X509CertificateHolder instances. How can I get the certification path (aka certificate chain) between the root and the end entity, or get an exception if no path was found? Here's how to do it with pure Java code, but since I'm already using BouncyCastle, I think it'd be more performant and maintainable to use BouncyCastle for this too -- Also, I'd prefer to avoid converting between Java

问题 I have a root CA, a set of intermediate CAs and an end entity. All represented as org.bouncycastle.cert.X509CertificateHolder instances. How can I get the certification path (aka certificate chain) between the root and the end entity, or get an exception if no path was found? Here's how to do it with pure Java code, but since I'm already using BouncyCastle, I think it'd be more performant and maintainable to use BouncyCastle for this too -- Also, I'd prefer to avoid converting between Java

问题 So I am looking ways to use a security provider only in the scope of a function. I can already do this by adding these two lines: (assume BouncyCastle is the provider) Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider("BC"); // do some stuff with converter Security.removeProvider("BC"); So i just want to use BC for JcaPEMKeyConverter and then for the rest use default security provider. Is there a

问题 So I am looking ways to use a security provider only in the scope of a function. I can already do this by adding these two lines: (assume BouncyCastle is the provider) Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider("BC"); // do some stuff with converter Security.removeProvider("BC"); So i just want to use BC for JcaPEMKeyConverter and then for the rest use default security provider. Is there a

问题 The following code uses the JcaPEMWriter class from BouncyCastle to output a randomly generated RSA private key in PKCS#1 format ( -----BEGIN RSA PRIVATE KEY----- ): public static void main(String[] args) throws Exception { final KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA"); kpg.initialize(2048, null); final KeyPair kp = kpg.generateKeyPair(); final PrivateKey privateKey = kp.getPrivate(); final StringWriter s = new StringWriter(); try (JcaPEMWriter w = new JcaPEMWriter(s)) { w

问题 I have the following code to extract Private Key PEMParser parser = new PEMParser(new InputStreamReader(new ByteArrayInputStream(decoded))); Object object = parser.readObject(); PEMDecryptorProvider provider = new JcePEMDecryptorProviderBuilder() .build(props.getProperty(KeytoolFlags.KEYPASS.name()).toCharArray()); JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider(BouncyCastleProvider.PROVIDER_NAME); if (object instanceof PEMEncryptedKeyPair) { KeyPair pair = converter

问题 I have the following code to extract Private Key PEMParser parser = new PEMParser(new InputStreamReader(new ByteArrayInputStream(decoded))); Object object = parser.readObject(); PEMDecryptorProvider provider = new JcePEMDecryptorProviderBuilder() .build(props.getProperty(KeytoolFlags.KEYPASS.name()).toCharArray()); JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider(BouncyCastleProvider.PROVIDER_NAME); if (object instanceof PEMEncryptedKeyPair) { KeyPair pair = converter

问题 Good time of day, I need to somehow connect the bouncycastle library to android studio. How can this be done? I've never dealt with one before. Here is the code for which I need this library: Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "www.javaCODEgeeks.com".getBytes(); byte[] keyBytes = new byte[]{0x01, 0x23, 0x45, 0x67, (byte) 0x89, (byte) 0xab, (byte) 0xcd, (byte) 0xef}; byte[] ivBytes = new byte[]{0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01

问题 Good time of day, I need to somehow connect the bouncycastle library to android studio. How can this be done? I've never dealt with one before. Here is the code for which I need this library: Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "www.javaCODEgeeks.com".getBytes(); byte[] keyBytes = new byte[]{0x01, 0x23, 0x45, 0x67, (byte) 0x89, (byte) 0xab, (byte) 0xcd, (byte) 0xef}; byte[] ivBytes = new byte[]{0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01