I have the following string, which I understand to be an RSA public key: I need to construct a java.security.interfaces.RSAPublicKey from this string. First I tried calling RSAPublicKeyImpl.newKey(myString.getBytes(StandardCharsets.UTF_8)), but that threw the following exception: Then, following an online gui…
Tag: x509
How to use x509 public key to verify a signed/hashed Alexa request body?
I’m trying to work through the steps listed here for an Alexa Skill I’m developing in Java. I’m getting a request from Alexa which is a POST. Two of the headers are the signing certificate chain url and the signature. Amazon SHA1 hashes then signs the entire body of the Alexa request with an…
X500Principal Distinguished Name order
I’m using the Bouncycastle lib to generate certificates from PKCS10 requests using the X509v3CertificateBuilder class. It returns build a X509CertificateHolder object which contains the generated certificate. If I call getIssuer on the holder, it returns the issuer distinguished name in the correct orde…
Write x509 certificate into PEM formatted string in java?
Is there some high level way to write an X509Certificate into a PEM formatted string? Currently I’m doing x509cert.encode() to write it into a DER formatted string, then base 64 encoding it and appending the header and footer to create a PEM string, but it seems bad. Especially since I have to throw in …
How to extract CN from X509Certificate in Java?
I am using a SslServerSocket and client certificates and want to extract the CN from the SubjectDN from the client’s X509Certificate. At the moment I call cert.getSubjectX500Principal().getName() but this of course gives me the total formatted DN of the client. For some reason I am just interested in th…