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Data: Cache public key in private key class

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zzz
2019-10-23 12:15:58 +00:00
parent 8484a22fc4
commit a9d4798bfe
1 changed files with 23 additions and 3 deletions
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26
core/java/src/net/i2p/data/PrivateKey.java
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@ -31,6 +31,8 @@ public class PrivateKey extends SimpleDataStructure implements Destroyable {
public final static int KEYSIZE_BYTES = DEF_TYPE.getPrivkeyLen();
private final EncType _type;
// cache
private PublicKey _pubKey;
public PrivateKey() {
this(DEF_TYPE);
@ -61,6 +63,19 @@ public class PrivateKey extends SimpleDataStructure implements Destroyable {
setData(data);
}
/**
* @param type non-null
* @param data must be non-null
* @param pubKey corresponding pubKey to be cached
* @since 0.9.44
*/
public PrivateKey(EncType type, byte data[], PublicKey pubKey) {
this(type, data);
if (type != pubKey.getType())
throw new IllegalArgumentException("Pubkey mismatch");
_pubKey = pubKey;
}
/** constructs from base64
* @param base64Data a string of base64 data (the output of .toBase64() called
* on a prior instance of PrivateKey
@ -82,13 +97,18 @@ public class PrivateKey extends SimpleDataStructure implements Destroyable {
return _type;
}
/** derives a new PublicKey object derived from the secret contents
* of this PrivateKey
/**
* Derives a new PublicKey object derived from the secret contents
* of this PrivateKey.
* As of 0.9.44, the PublicKey is cached.
*
* @return a PublicKey object
* @throws IllegalArgumentException on bad key
*/
public PublicKey toPublic() {
return KeyGenerator.getPublicKey(this);
if (_pubKey == null)
_pubKey = KeyGenerator.getPublicKey(this);
return _pubKey;
}
/**