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path: root/src/cz/crcs/ectester/applet/ECKeyGenerator.java
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Diffstat (limited to 'src/cz/crcs/ectester/applet/ECKeyGenerator.java')
-rw-r--r--src/cz/crcs/ectester/applet/ECKeyGenerator.java154
1 files changed, 105 insertions, 49 deletions
diff --git a/src/cz/crcs/ectester/applet/ECKeyGenerator.java b/src/cz/crcs/ectester/applet/ECKeyGenerator.java
index 4326752..30910ca 100644
--- a/src/cz/crcs/ectester/applet/ECKeyGenerator.java
+++ b/src/cz/crcs/ectester/applet/ECKeyGenerator.java
@@ -14,6 +14,7 @@ import javacard.security.KeyPair;
public class ECKeyGenerator {
private short sw = ISO7816.SW_NO_ERROR;
+ private boolean dryRun = false;
/**
* @param keyClass
@@ -24,12 +25,14 @@ public class ECKeyGenerator {
sw = ISO7816.SW_NO_ERROR;
KeyPair ecKeyPair = null;
try {
- ecKeyPair = new KeyPair(keyClass, keyLength);
+ if (!dryRun) {
+ ecKeyPair = new KeyPair(keyClass, keyLength);
- if (ecKeyPair.getPublic() == null || ecKeyPair.getPrivate() == null) {
- try {
- ecKeyPair.genKeyPair();
- } catch (Exception ignored) {
+ if (ecKeyPair.getPublic() == null || ecKeyPair.getPrivate() == null) {
+ try {
+ ecKeyPair.genKeyPair();
+ } catch (Exception ignored) {
+ }
}
}
} catch (CardRuntimeException ce) {
@@ -46,8 +49,10 @@ public class ECKeyGenerator {
public short clearPair(KeyPair keypair, byte key) {
try {
sw = AppletUtil.keypairCheck(keypair);
- if ((key & EC_Consts.KEY_PUBLIC) != 0) keypair.getPublic().clearKey();
- if ((key & EC_Consts.KEY_PRIVATE) != 0) keypair.getPrivate().clearKey();
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) keypair.getPublic().clearKey();
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) keypair.getPrivate().clearKey();
+ }
} catch (CardRuntimeException ce) {
sw = ce.getReason();
}
@@ -61,7 +66,9 @@ public class ECKeyGenerator {
public short generatePair(KeyPair keypair) {
try {
sw = AppletUtil.keypairCheck(keypair);
- keypair.genKeyPair();
+ if (!dryRun) {
+ keypair.genKeyPair();
+ }
} catch (CardRuntimeException ce) {
sw = ce.getReason();
}
@@ -187,25 +194,35 @@ public class ECKeyGenerator {
try {
sw = AppletUtil.keypairCheck(keypair);
- ECPublicKey ecPublicKey = (ECPublicKey) keypair.getPublic();
- ECPrivateKey ecPrivateKey = (ECPrivateKey) keypair.getPrivate();
+ ECPublicKey ecPublicKey = null;
+ ECPrivateKey ecPrivateKey = null;
+ if (!dryRun) {
+ ecPublicKey = (ECPublicKey) keypair.getPublic();
+ ecPrivateKey = (ECPrivateKey) keypair.getPrivate();
+ }
switch (param) {
case EC_Consts.PARAMETER_FP:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setFieldFP(data, offset, length);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setFieldFP(data, offset, length);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setFieldFP(data, offset, length);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setFieldFP(data, offset, length);
+ }
break;
case EC_Consts.PARAMETER_F2M:
if (length == 4) {
short i = Util.getShort(data, (short) (offset + 2));
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setFieldF2M(i);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setFieldF2M(i);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setFieldF2M(i);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setFieldF2M(i);
+ }
} else if (length == 8) {
short i1 = Util.getShort(data, (short) (offset + 2));
short i2 = Util.getShort(data, (short) (offset + 4));
short i3 = Util.getShort(data, (short) (offset + 6));
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setFieldF2M(i1, i2, i3);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setFieldF2M(i1, i2, i3);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setFieldF2M(i1, i2, i3);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setFieldF2M(i1, i2, i3);
+ }
// if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setFieldF2M(i3, i2, i1);
// if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setFieldF2M(i3, i2, i1);
} else {
@@ -213,20 +230,28 @@ public class ECKeyGenerator {
}
break;
case EC_Consts.PARAMETER_A:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setA(data, offset, length);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setA(data, offset, length);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setA(data, offset, length);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setA(data, offset, length);
+ }
break;
case EC_Consts.PARAMETER_B:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setB(data, offset, length);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setB(data, offset, length);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setB(data, offset, length);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setB(data, offset, length);
+ }
break;
case EC_Consts.PARAMETER_G:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setG(data, offset, length);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setG(data, offset, length);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setG(data, offset, length);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setG(data, offset, length);
+ }
break;
case EC_Consts.PARAMETER_R:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setR(data, offset, length);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setR(data, offset, length);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setR(data, offset, length);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setR(data, offset, length);
+ }
break;
case EC_Consts.PARAMETER_K:
short k = 0;
@@ -238,14 +263,20 @@ public class ECKeyGenerator {
} else if (length == 1) {
k = data[offset];
}
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setK(k);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setK(k);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setK(k);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setK(k);
+ }
break;
case EC_Consts.PARAMETER_S:
- if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setS(data, offset, length);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) ecPrivateKey.setS(data, offset, length);
+ }
break;
case EC_Consts.PARAMETER_W:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setW(data, offset, length);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) ecPublicKey.setW(data, offset, length);
+ }
break;
default:
ISOException.throwIt(ISO7816.SW_FUNC_NOT_SUPPORTED);
@@ -310,54 +341,75 @@ public class ECKeyGenerator {
short length = 0;
try {
sw = AppletUtil.keypairCheck(keypair);
- ECPublicKey ecPublicKey = (ECPublicKey) keypair.getPublic();
- ECPrivateKey ecPrivateKey = (ECPrivateKey) keypair.getPrivate();
+
+ ECPublicKey ecPublicKey = null;
+ ECPrivateKey ecPrivateKey = null;
+ if (!dryRun) {
+ ecPublicKey = (ECPublicKey) keypair.getPublic();
+ ecPrivateKey = (ECPrivateKey) keypair.getPrivate();
+ }
switch (param) {
case EC_Consts.PARAMETER_FP:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getField(outputBuffer, outputOffset);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getField(outputBuffer, outputOffset);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0)
+ length = ecPublicKey.getField(outputBuffer, outputOffset);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0)
+ length = ecPrivateKey.getField(outputBuffer, outputOffset);
+ }
break;
case EC_Consts.PARAMETER_F2M:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0 && !dryRun) {
Util.setShort(outputBuffer, outputOffset, ecPublicKey.getSize());
length = 2;
length += ecPublicKey.getField(outputBuffer, (short) (outputOffset + 2));
}
- if ((key & EC_Consts.KEY_PRIVATE) != 0) {
+ if ((key & EC_Consts.KEY_PRIVATE) != 0 && !dryRun) {
Util.setShort(outputBuffer, outputOffset, ecPrivateKey.getSize());
length = 2;
length += ecPrivateKey.getField(outputBuffer, (short) (outputOffset + 2));
}
break;
case EC_Consts.PARAMETER_A:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getA(outputBuffer, outputOffset);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getA(outputBuffer, outputOffset);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getA(outputBuffer, outputOffset);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getA(outputBuffer, outputOffset);
+ }
break;
case EC_Consts.PARAMETER_B:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getB(outputBuffer, outputOffset);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getB(outputBuffer, outputOffset);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getB(outputBuffer, outputOffset);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getB(outputBuffer, outputOffset);
+ }
break;
case EC_Consts.PARAMETER_G:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getG(outputBuffer, outputOffset);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getG(outputBuffer, outputOffset);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getG(outputBuffer, outputOffset);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getG(outputBuffer, outputOffset);
+ }
break;
case EC_Consts.PARAMETER_R:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getR(outputBuffer, outputOffset);
- if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getR(outputBuffer, outputOffset);
+ if (!dryRun) {
+ if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getR(outputBuffer, outputOffset);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getR(outputBuffer, outputOffset);
+ }
break;
case EC_Consts.PARAMETER_K:
- length = 2;
- if ((key & EC_Consts.KEY_PUBLIC) != 0)
- Util.setShort(outputBuffer, outputOffset, ecPublicKey.getK());
- if ((key & EC_Consts.KEY_PRIVATE) != 0)
- Util.setShort(outputBuffer, outputOffset, ecPrivateKey.getK());
+ if (!dryRun) {
+ length = 2;
+ if ((key & EC_Consts.KEY_PUBLIC) != 0)
+ Util.setShort(outputBuffer, outputOffset, ecPublicKey.getK());
+ if ((key & EC_Consts.KEY_PRIVATE) != 0)
+ Util.setShort(outputBuffer, outputOffset, ecPrivateKey.getK());
+ }
break;
case EC_Consts.PARAMETER_W:
- if ((key & EC_Consts.KEY_PUBLIC) != 0) length = ecPublicKey.getW(outputBuffer, outputOffset);
+ if ((key & EC_Consts.KEY_PUBLIC) != 0 && !dryRun)
+ length = ecPublicKey.getW(outputBuffer, outputOffset);
break;
case EC_Consts.PARAMETER_S:
- if ((key & EC_Consts.KEY_PRIVATE) != 0) length = ecPrivateKey.getS(outputBuffer, outputOffset);
+ if ((key & EC_Consts.KEY_PRIVATE) != 0 && !dryRun)
+ length = ecPrivateKey.getS(outputBuffer, outputOffset);
break;
default:
ISOException.throwIt(ISO7816.SW_FUNC_NOT_SUPPORTED);
@@ -439,4 +491,8 @@ public class ECKeyGenerator {
public short getSW() {
return sw;
}
+
+ public void setDryRun(boolean dryRun) {
+ this.dryRun = dryRun;
+ }
}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-08 12:57:51 +0000