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jimmyMaci/to pkcs8 format

Last active July 24, 2018 16:32
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Convert a PKCS#1 formatted java private key to PKCS#8
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to pkcs8 format
In BouncyCastle version 1.60 you can convert a PKCS#1 formatted private key to PKCS#8 with this method:
```
public static byte[] toPKCS8Format(final PrivateKey privateKey) throws IOException
{
String keyFormat = privateKey.getFormat();
if (keyFormat.equals("PKCS#1")) {
final byte[] encoded = privateKey.getEncoded();
final PrivateKeyInfo privateKeyInfo = PrivateKeyInfo.getInstance(encoded);
final ASN1Encodable asn1Encodable = privateKeyInfo.parsePrivateKey();
final ASN1Primitive asn1Primitive = asn1Encodable.toASN1Primitive();
final byte[] privateKeyPKCS8Formatted = asn1Primitive.getEncoded(ASN1Encoding.DER);
return privateKeyPKCS8Formatted;
}
return privateKey.getEncoded();
}
```
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