pkcs#8

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 want to import (RSA and ECDsa) private keys from pkcs8 files (-----BEGIN ENCRYPTED PRIVATE KEY-----). This question How to import PKCS#8 RSA privateKey (created by OpenSSL) in C# has been answered, but the only acceptable solution for me is to implement pkcs8 parser which I want to avoid to as well as using of 3rd party libraries (beside the Chillkat there is also BouncyCastle and its PemReader) as well as pinvoke and NCryptImportKey (mentioned here: Importing PKCS#8 encrypted key to RSACng

问题 I want load the PEM using .net framework (not .netcore) -----BEGIN ENCRYPTED PRIVATE KEY----- MIHs........................................................CAAw DAYI........................................................gZAf Y/Iu........................................................X7DZ ZKoE........................................................OYQQ 3ZST........................................................A2E= -----END ENCRYPTED PRIVATE KEY----- I tried to use the following code using

问题 I'm trying to get certificates and private keys from windows certificate store using MSCAPI provider, then i need to store them in a Java Keystore object, but i'm facing a problem of private keys format, the error says: java.security.KeyStoreException: Cannot get key bytes, not PKCS#8 encoded Here's my code: SunMSCAPI providerMSCAPI = new SunMSCAPI(); Security.addProvider(providerMSCAPI); KeyStore ks = KeyStore.getInstance("Windows-MY"); ks.load(null, null); PrivateKey privateKey = null;

问题 Why is the modulus padded with leading zeros? I was reading PKCS#1 and PKCS#8 but didn't find anything about it. In c# the leading zeros must be removed, does anybody know why? At http://etherhack.co.uk/asymmetric/docs/rsa_key_breakdown.html, you can see that the modulus and exponent have leading zeros. The question is why they have it, I haven't found an explanation anywhere yet. 回答1: The private key values are encoded as ASN.1 INTEGERs, which are signed values in two's complement format.

问题 I have an Encrypted Private Key(say,servenc.key) in below format: -----BEGIN ENCRYPTED PRIVATE KEY----- MIIC2TBTBgkqhkiG9w0BBQ0wRjAlBgkqhkiG9w0BBQwwGAQSIFFvMaBFyBvqqhY6 yTV2fMVVAgIUczAdBglghkgBZQMEASoEEGRetyFtHhnJ7TZTM2qolWkEggKAFg/h GERtM1loEd+u8VAtLwTzBiXE5pmRpp/hX/1HrbBnzFjAsNtWlEtzpSuxuCoXtMst uKRB8qveHlfTQPzopkRZtljfOkD1DhdJz8BXSZrFmVkMrUq6m4Y/rnqTqI5JmtmQ qAXTBbl7u8TwMnqIaoSInEHnc+aiFT3KJuIq6PZy2rGKWGW2WB/OML2gANvHBI9n gyOo4VZHNsR6VBbCRJErUFhF5Wk2/YJD9ejnvXH6pJFqZYvnCFjkSlR+4MdCHBSo

问题 How to encode an ECDSA PublicKey on Java Card so that after I can decode it on another platform (e.g. sending the encoded key in a response APDU and processing it in a standard Java application)? keyPair.getPublic().getEncoded() on Java would do the trick with PKCS#8 encoding, but as far as I know getEncoded() is not available on the Java Card platform. 回答1: You can implement this function like this: Card side: 1 KeyPair.getPublicKey() --> publicKey; 2 publicKey.getW() --> W; 3 Send W to

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 12 months ago . Can some one help me understand how an RSA key literally is stored in these formats? I would like to know the difference between the PKCS formats vs Encodings(DER, PEM). From what I understand PEM is more human readable. Is PEM/DER for keys/certs similar to UTF-8/16 for

问题 I have an encrypted private key and I know the password. I need to decrypt it using a Java library. I'd prefer not to use BouncyCastle though, unless there is no other option. Based on previous experience, there is too much change and not enough documentation. The private key is in this form: -----BEGIN RSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: DES-EDE3-CBC,56F3A98D9CFFA77A X5h7SUDStF1tL16lRM+AfZb1UBDQ0D1YbQ6vmIlXiK.... ..... /KK5CZmIGw== -----END RSA PRIVATE KEY----- I believe

问题 Is it possible decrypt an encrypted RSA (or others, shouldn't matter) private keys using JCE and/or BouncyCastle provider (not using openssl bundle)? I can read unencrypted keys just fine using PrivateKeyFactory. Googling this gets me through examples of using PEMReader (from BC openssl bundle) that has a password applied to it, but - don't want to use openssl bundle, don't necessarily want to use PEM format, and I can decode PEM using PemReader (from provider bundle). It's what can I do with