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Log the running time of key validation and message verification.

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This commit is contained in:
akwizgran
2014-03-22 00:30:29 +00:00
parent d83513c5f9
commit fc66f6ed8a
2 changed files with 32 additions and 7 deletions
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20
briar-core/src/org/briarproject/crypto/Sec1KeyParser.java
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@@ -1,7 +1,10 @@
package org.briarproject.crypto;
import static java.util.logging.Level.INFO;
import java.math.BigInteger;
import java.security.GeneralSecurityException;
import java.util.logging.Logger;
import org.briarproject.api.crypto.KeyParser;
import org.briarproject.api.crypto.PrivateKey;
@@ -19,6 +22,9 @@ import org.spongycastle.math.ec.ECPoint;
*/
class Sec1KeyParser implements KeyParser {
private static final Logger LOG =
Logger.getLogger(Sec1KeyParser.class.getName());
private final ECDomainParameters params;
private final BigInteger modulus;
private final int keyBits, bytesPerInt, publicKeyBytes, privateKeyBytes;
@@ -36,6 +42,7 @@ class Sec1KeyParser implements KeyParser {
throws GeneralSecurityException {
// The validation procedure comes from SEC 1, section 3.2.2.1. Note
// that SEC 1 parameter names are used below, not RFC 5639 names
long now = System.currentTimeMillis();
if(encodedKey.length != publicKeyBytes)
throw new GeneralSecurityException();
// The first byte must be 0x04
@@ -66,11 +73,16 @@ class Sec1KeyParser implements KeyParser {
throw new GeneralSecurityException();
// Construct a public key from the point (x, y) and the params
ECPublicKeyParameters k = new ECPublicKeyParameters(pub, params);
return new Sec1PublicKey(k, keyBits);
PublicKey p = new Sec1PublicKey(k, keyBits);
long duration = System.currentTimeMillis() - now;
if(LOG.isLoggable(INFO))
LOG.info("Parsing public key took " + duration + " ms");
return p;
}
public PrivateKey parsePrivateKey(byte[] encodedKey)
throws GeneralSecurityException {
long now = System.currentTimeMillis();
if(encodedKey.length != privateKeyBytes)
throw new GeneralSecurityException();
BigInteger d = new BigInteger(1, encodedKey); // Positive signum
@@ -79,6 +91,10 @@ class Sec1KeyParser implements KeyParser {
throw new GeneralSecurityException();
// Construct a private key from the private value and the params
ECPrivateKeyParameters k = new ECPrivateKeyParameters(d, params);
return new Sec1PrivateKey(k, keyBits);
PrivateKey p = new Sec1PrivateKey(k, keyBits);
long duration = System.currentTimeMillis() - now;
if(LOG.isLoggable(INFO))
LOG.info("Parsing private key took " + duration + " ms");
return p;
}
}