本文介绍了将SubjectPublicKeyInfo格式的公钥转换为RSAPublicKey格式java的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

PublicKey.getEncoded()返回一个包含SubjectPublicKeyInfo(x.509)格式的公钥的字节数组,如何将其转换为RSA公钥编码?

The PublicKey.getEncoded(), returns a byte array containing the public key in SubjectPublicKeyInfo (x.509) format, how do i convert it to RSA public key encoding?

推荐答案

使用Bouncy Castle的,如下所示:

Use Bouncy Castle's SubjectPublicKeyInfo, like this:

byte[] encoded = publicKey.getEncoded();
SubjectPublicKeyInfo subjectPublicKeyInfo = new SubjectPublicKeyInfo(
    ASN1Sequence.getInstance(encoded));
byte[] otherEncoded = subjectPublicKeyInfo.parsePublicKey().getEncoded();

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09-11 09:43