java - How to convert Byte array to PrivateKey or PublicKey type? -

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i using rsa algorithm generate public , private key

final keypairgenerator keygen = keypairgenerator.getinstance(algorithm); keygen.initialize(1024); final keypair key = keygen.generatekeypair(); final privatekey privatekey=key.getprivate(); final publickey publickey=key.getpublic();

after these keys encoded using base64 encoder , save database.

how convert encoded string private , public key type in java decrypt file. when decoding string using base64decoder byte array. how convert byte array public or private key type?

if have byte[] representing output of getencoded() on key, can use keyfactory turn publickey object or privatekey object.

byte[] privatekeybytes; byte[] publickeybytes; keyfactory kf = keyfactory.getinstance("rsa"); // or "ec" or whatever privatekey privatekey = kf.generateprivate(new pkcs8encodedkeyspec(privatekeybytes)); publickey publickey = kf.generatepublic(new x509encodedkeyspec(publickeybytes));

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