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I have a RSA private key file (OCkey.pem). Using java i have to get the private key from this file. this key is generated using the below openssl command. Note : I can't change anything on this openssl command below. openssl> req -newkey rsa:1024 -sha1 -keyout OCkey.pem -out OCreq.pem -subj "/C=country/L=city/O=OC/OU=myLab/CN=OCserverName/" -config req.conf The certificate looks like below. /////////////////////////////////////////////////////////// bash-3.00$ less OCkey.pem -----BEGIN RSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: DES-EDE3-CBC,EA1DBF8D142621BF BYyZuqyqq9+L0UT8UxwkDHX7P7YxpKugTXE8NCLQWhdS3EksMsv4xNQsZSVrJxE3 Ft9veWuk+PlFVQG2utZlWxTYsUVIJg4KF7EgCbyPbN1cyjsi9FMfmlPXQyCJ72rd ... ... cBlG80PT4t27h01gcCFRCBGHxiidh5LAATkApZMSfe6BBv4hYjkCmg== -----END RSA PRIVATE KEY----- ////////////////////////////////////////////////////////////// Following is what I tried byte[] privKeyBytes = new byte[(int)new File("C:/OCkey.pem").length()]; PublicKey publicKey = KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(privKeyBytes)); but getting "java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: invalid key format" Please help.

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