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Fix 'key spec not recognized' exception with ECDSA keys

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This commit is contained in:
Jeroen van Erp
2018-01-23 19:58:04 +01:00
parent dabe43dfdc
commit 0b6552654b
1 changed files with 9 additions and 8 deletions
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17
src/main/java/net/schmizz/sshj/common/ECDSAVariationsAdapter.java
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@@ -18,9 +18,7 @@ package net.schmizz.sshj.common;
import com.hierynomus.sshj.secg.SecgUtils;
import org.bouncycastle.asn1.nist.NISTNamedCurves;
import org.bouncycastle.asn1.x9.X9ECParameters;
import org.bouncycastle.jce.spec.ECParameterSpec;
import org.bouncycastle.jce.spec.ECPublicKeySpec;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.jce.spec.ECNamedCurveSpec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -31,6 +29,8 @@ import java.security.KeyFactory;
import java.security.PublicKey;
import java.security.interfaces.ECKey;
import java.security.interfaces.ECPublicKey;
import java.security.spec.ECPoint;
import java.security.spec.ECPublicKeySpec;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
@@ -81,13 +81,14 @@ class ECDSAVariationsAdapter {
BigInteger bigX = new BigInteger(1, x);
BigInteger bigY = new BigInteger(1, y);
X9ECParameters ecParams = NISTNamedCurves.getByName(NIST_CURVES_NAMES.get(variation));
ECPoint pPublicPoint = ecParams.getCurve().createPoint(bigX, bigY);
ECParameterSpec spec = new ECParameterSpec(ecParams.getCurve(), ecParams.getG(), ecParams.getN());
ECPublicKeySpec publicSpec = new ECPublicKeySpec(pPublicPoint, spec);
String name = NIST_CURVES_NAMES.get(variation);
X9ECParameters ecParams = NISTNamedCurves.getByName(name);
ECNamedCurveSpec ecCurveSpec = new ECNamedCurveSpec(name, ecParams.getCurve(), ecParams.getG(), ecParams.getN());
ECPoint p = new ECPoint(bigX, bigY);
ECPublicKeySpec publicKeySpec = new java.security.spec.ECPublicKeySpec(p, ecCurveSpec);
KeyFactory keyFactory = KeyFactory.getInstance("ECDSA");
return keyFactory.generatePublic(publicSpec);
return keyFactory.generatePublic(publicKeySpec);
} catch (Exception ex) {
throw new GeneralSecurityException(ex);
}