diff options
Diffstat (limited to 'lib/src/main/java/com/trilead/ssh2/signature')
8 files changed, 217 insertions, 512 deletions
diff --git a/lib/src/main/java/com/trilead/ssh2/signature/DSAPrivateKey.java b/lib/src/main/java/com/trilead/ssh2/signature/DSAPrivateKey.java deleted file mode 100644 index d2a63ae..0000000 --- a/lib/src/main/java/com/trilead/ssh2/signature/DSAPrivateKey.java +++ /dev/null @@ -1,58 +0,0 @@ -package com.trilead.ssh2.signature;
-
-import java.math.BigInteger;
-
-/**
- * DSAPrivateKey.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DSAPrivateKey.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class DSAPrivateKey
-{
- private BigInteger p;
- private BigInteger q;
- private BigInteger g;
- private BigInteger x;
- private BigInteger y;
-
- public DSAPrivateKey(BigInteger p, BigInteger q, BigInteger g,
- BigInteger y, BigInteger x)
- {
- this.p = p;
- this.q = q;
- this.g = g;
- this.y = y;
- this.x = x;
- }
-
- public BigInteger getP()
- {
- return p;
- }
-
- public BigInteger getQ()
- {
- return q;
- }
-
- public BigInteger getG()
- {
- return g;
- }
-
- public BigInteger getY()
- {
- return y;
- }
-
- public BigInteger getX()
- {
- return x;
- }
-
- public DSAPublicKey getPublicKey()
- {
- return new DSAPublicKey(p, q, g, y);
- }
-}
\ No newline at end of file diff --git a/lib/src/main/java/com/trilead/ssh2/signature/DSAPublicKey.java b/lib/src/main/java/com/trilead/ssh2/signature/DSAPublicKey.java deleted file mode 100644 index f8351ff..0000000 --- a/lib/src/main/java/com/trilead/ssh2/signature/DSAPublicKey.java +++ /dev/null @@ -1,45 +0,0 @@ -package com.trilead.ssh2.signature;
-
-import java.math.BigInteger;
-
-/**
- * DSAPublicKey.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DSAPublicKey.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class DSAPublicKey
-{
- private BigInteger p;
- private BigInteger q;
- private BigInteger g;
- private BigInteger y;
-
- public DSAPublicKey(BigInteger p, BigInteger q, BigInteger g, BigInteger y)
- {
- this.p = p;
- this.q = q;
- this.g = g;
- this.y = y;
- }
-
- public BigInteger getP()
- {
- return p;
- }
-
- public BigInteger getQ()
- {
- return q;
- }
-
- public BigInteger getG()
- {
- return g;
- }
-
- public BigInteger getY()
- {
- return y;
- }
-}
\ No newline at end of file diff --git a/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java b/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java index c838ebd..357d66e 100644 --- a/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java +++ b/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java @@ -3,9 +3,19 @@ package com.trilead.ssh2.signature; import java.io.IOException;
import java.math.BigInteger;
+import java.security.InvalidKeyException;
+import java.security.KeyFactory;
+import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
+import java.security.Signature;
+import java.security.SignatureException;
+import java.security.interfaces.DSAParams;
+import java.security.interfaces.DSAPrivateKey;
+import java.security.interfaces.DSAPublicKey;
+import java.security.spec.DSAPublicKeySpec;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.KeySpec;
-import com.trilead.ssh2.crypto.digest.SHA1;
import com.trilead.ssh2.log.Logger;
import com.trilead.ssh2.packets.TypesReader;
import com.trilead.ssh2.packets.TypesWriter;
@@ -38,7 +48,20 @@ public class DSASHA1Verify if (tr.remain() != 0)
throw new IOException("Padding in DSA public key!");
- return new DSAPublicKey(p, q, g, y);
+ try {
+ KeyFactory kf = KeyFactory.getInstance("DSA");
+
+ KeySpec ks = new DSAPublicKeySpec(y, p, q, g);
+ return (DSAPublicKey) kf.generatePublic(ks);
+ } catch (NoSuchAlgorithmException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ } catch (InvalidKeySpecException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ }
}
public static byte[] encodeSSHDSAPublicKey(DSAPublicKey pk) throws IOException
@@ -46,25 +69,47 @@ public class DSASHA1Verify TypesWriter tw = new TypesWriter();
tw.writeString("ssh-dss");
- tw.writeMPInt(pk.getP());
- tw.writeMPInt(pk.getQ());
- tw.writeMPInt(pk.getG());
+
+ DSAParams params = pk.getParams();
+ tw.writeMPInt(params.getP());
+ tw.writeMPInt(params.getQ());
+ tw.writeMPInt(params.getG());
tw.writeMPInt(pk.getY());
return tw.getBytes();
}
- public static byte[] encodeSSHDSASignature(DSASignature ds)
+ /**
+ * Convert from Java's signature ASN.1 encoding to the SSH spec.
+ * <p>
+ * Java ASN.1 encoding:
+ * <pre>
+ * SEQUENCE ::= {
+ * r INTEGER,
+ * s INTEGER
+ * }
+ * </pre>
+ */
+ public static byte[] encodeSSHDSASignature(byte[] ds)
{
TypesWriter tw = new TypesWriter();
tw.writeString("ssh-dss");
- byte[] r = ds.getR().toByteArray();
- byte[] s = ds.getS().toByteArray();
+ int len, index;
- byte[] a40 = new byte[40];
+ index = 3;
+ len = ds[index++] & 0xff;
+ byte[] r = new byte[len];
+ System.arraycopy(ds, index, r, 0, r.length);
+ index = index + len + 1;
+ len = ds[index++] & 0xff;
+ byte[] s = new byte[len];
+ System.arraycopy(ds, index, s, 0, s.length);
+
+ byte[] a40 = new byte[40];
+ /* Patch (unsigned) r and s into the target array. */
int r_copylen = (r.length < 20) ? r.length : 20;
@@ -78,22 +123,21 @@ public class DSASHA1Verify return tw.getBytes();
}
- public static DSASignature decodeSSHDSASignature(byte[] sig) throws IOException
+ public static byte[] decodeSSHDSASignature(byte[] sig) throws IOException
{
byte[] rsArray = null;
if (sig.length == 40)
{
/* OK, another broken SSH server. */
- rsArray = sig;
+ rsArray = sig;
}
else
{
- /* Hopefully a server obeing the standard... */
+ /* Hopefully a server obeying the standard... */
TypesReader tr = new TypesReader(sig);
String sig_format = tr.readString();
-
if (sig_format.equals("ssh-dss") == false)
throw new IOException("Peer sent wrong signature format");
@@ -106,105 +150,106 @@ public class DSASHA1Verify throw new IOException("Padding in DSA signature!");
}
- /* Remember, s and r are unsigned ints. */
-
- byte[] tmp = new byte[20];
-
- System.arraycopy(rsArray, 0, tmp, 0, 20);
- BigInteger r = new BigInteger(1, tmp);
-
- System.arraycopy(rsArray, 20, tmp, 0, 20);
- BigInteger s = new BigInteger(1, tmp);
-
- if (log.isEnabled())
- {
- log.log(30, "decoded ssh-dss signature: first bytes r(" + ((rsArray[0]) & 0xff) + "), s("
- + ((rsArray[20]) & 0xff) + ")");
+ int i = 0;
+ int j = 0;
+ byte[] tmp;
+
+ if (rsArray[0] == 0 && rsArray[1] == 0 && rsArray[2] == 0) {
+ j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
+ | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
+ i += j;
+ j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
+ | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
+ tmp = new byte[j];
+ System.arraycopy(rsArray, i, tmp, 0, j);
+ rsArray = tmp;
}
- return new DSASignature(r, s);
- }
-
- public static boolean verifySignature(byte[] message, DSASignature ds, DSAPublicKey dpk) throws IOException
- {
- /* Inspired by Bouncycastle's DSASigner class */
-
- SHA1 md = new SHA1();
- md.update(message);
- byte[] sha_message = new byte[md.getDigestLength()];
- md.digest(sha_message);
+ /* ASN.1 */
+ int frst = ((rsArray[0] & 0x80) != 0 ? 1 : 0);
+ int scnd = ((rsArray[20] & 0x80) != 0 ? 1 : 0);
- BigInteger m = new BigInteger(1, sha_message);
+ /* Calculate output length */
+ int length = rsArray.length + 6 + frst + scnd;
+ tmp = new byte[length];
- BigInteger r = ds.getR();
- BigInteger s = ds.getS();
+ /* DER-encoding to match Java */
+ tmp[0] = (byte) 0x30;
- BigInteger g = dpk.getG();
- BigInteger p = dpk.getP();
- BigInteger q = dpk.getQ();
- BigInteger y = dpk.getY();
-
- BigInteger zero = BigInteger.ZERO;
+ if (rsArray.length != 40)
+ throw new IOException("Peer sent corrupt signature");
+ /* Calculate length */
+ tmp[1] = (byte) 0x2c;
+ tmp[1] += frst;
+ tmp[1] += scnd;
- if (log.isEnabled())
- {
- log.log(60, "ssh-dss signature: m: " + m.toString(16));
- log.log(60, "ssh-dss signature: r: " + r.toString(16));
- log.log(60, "ssh-dss signature: s: " + s.toString(16));
- log.log(60, "ssh-dss signature: g: " + g.toString(16));
- log.log(60, "ssh-dss signature: p: " + p.toString(16));
- log.log(60, "ssh-dss signature: q: " + q.toString(16));
- log.log(60, "ssh-dss signature: y: " + y.toString(16));
- }
+ /* First item */
+ tmp[2] = (byte) 0x02;
- if (zero.compareTo(r) >= 0 || q.compareTo(r) <= 0)
- {
- log.log(20, "ssh-dss signature: zero.compareTo(r) >= 0 || q.compareTo(r) <= 0");
- return false;
- }
+ /* First item length */
+ tmp[3] = (byte) 0x14;
+ tmp[3] += frst;
- if (zero.compareTo(s) >= 0 || q.compareTo(s) <= 0)
- {
- log.log(20, "ssh-dss signature: zero.compareTo(s) >= 0 || q.compareTo(s) <= 0");
- return false;
- }
+ /* Copy in the data for first item */
+ System.arraycopy(rsArray, 0, tmp, 4 + frst, 20);
- BigInteger w = s.modInverse(q);
+ /* Second item */
+ tmp[4 + tmp[3]] = (byte) 0x02;
- BigInteger u1 = m.multiply(w).mod(q);
- BigInteger u2 = r.multiply(w).mod(q);
+ /* Second item length */
+ tmp[5 + tmp[3]] = (byte) 0x14;
+ tmp[5 + tmp[3]] += scnd;
- u1 = g.modPow(u1, p);
- u2 = y.modPow(u2, p);
+ /* Copy in the data for the second item */
+ System.arraycopy(rsArray, 20, tmp, 6 + tmp[3] + scnd, 20);
- BigInteger v = u1.multiply(u2).mod(p).mod(q);
+ /* Swap buffers */
+ rsArray = tmp;
- return v.equals(r);
+ return rsArray;
}
- public static DSASignature generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd)
+ public static boolean verifySignature(byte[] message, byte[] ds, DSAPublicKey dpk) throws IOException
{
- SHA1 md = new SHA1();
- md.update(message);
- byte[] sha_message = new byte[md.getDigestLength()];
- md.digest(sha_message);
-
- BigInteger m = new BigInteger(1, sha_message);
- BigInteger k;
- int qBitLength = pk.getQ().bitLength();
-
- do
- {
- k = new BigInteger(qBitLength, rnd);
+ try {
+ Signature s = Signature.getInstance("SHA1withDSA");
+ s.initVerify(dpk);
+ s.update(message);
+ return s.verify(ds);
+ } catch (NoSuchAlgorithmException e) {
+ IOException ex = new IOException("No such algorithm");
+ ex.initCause(e);
+ throw ex;
+ } catch (InvalidKeyException e) {
+ IOException ex = new IOException("No such algorithm");
+ ex.initCause(e);
+ throw ex;
+ } catch (SignatureException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
}
- while (k.compareTo(pk.getQ()) >= 0);
-
- BigInteger r = pk.getG().modPow(k, pk.getP()).mod(pk.getQ());
-
- k = k.modInverse(pk.getQ()).multiply(m.add((pk).getX().multiply(r)));
-
- BigInteger s = k.mod(pk.getQ());
+ }
- return new DSASignature(r, s);
+ public static byte[] generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd) throws IOException
+ {
+ try {
+ Signature s = Signature.getInstance("SHA1withDSA");
+ s.initSign(pk);
+ s.update(message);
+ return s.sign();
+ } catch (NoSuchAlgorithmException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ } catch (InvalidKeyException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ } catch (SignatureException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ }
}
}
diff --git a/lib/src/main/java/com/trilead/ssh2/signature/DSASignature.java b/lib/src/main/java/com/trilead/ssh2/signature/DSASignature.java deleted file mode 100644 index eff84cd..0000000 --- a/lib/src/main/java/com/trilead/ssh2/signature/DSASignature.java +++ /dev/null @@ -1,31 +0,0 @@ -package com.trilead.ssh2.signature;
-
-import java.math.BigInteger;
-
-/**
- * DSASignature.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DSASignature.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class DSASignature
-{
- private BigInteger r;
- private BigInteger s;
-
- public DSASignature(BigInteger r, BigInteger s)
- {
- this.r = r;
- this.s = s;
- }
-
- public BigInteger getR()
- {
- return r;
- }
-
- public BigInteger getS()
- {
- return s;
- }
-}
diff --git a/lib/src/main/java/com/trilead/ssh2/signature/RSAPrivateKey.java b/lib/src/main/java/com/trilead/ssh2/signature/RSAPrivateKey.java deleted file mode 100644 index 5d5e606..0000000 --- a/lib/src/main/java/com/trilead/ssh2/signature/RSAPrivateKey.java +++ /dev/null @@ -1,43 +0,0 @@ -package com.trilead.ssh2.signature;
-
-import java.math.BigInteger;
-
-/**
- * RSAPrivateKey.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RSAPrivateKey.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class RSAPrivateKey
-{
- private BigInteger d;
- private BigInteger e;
- private BigInteger n;
-
- public RSAPrivateKey(BigInteger d, BigInteger e, BigInteger n)
- {
- this.d = d;
- this.e = e;
- this.n = n;
- }
-
- public BigInteger getD()
- {
- return d;
- }
-
- public BigInteger getE()
- {
- return e;
- }
-
- public BigInteger getN()
- {
- return n;
- }
-
- public RSAPublicKey getPublicKey()
- {
- return new RSAPublicKey(e, n);
- }
-}
\ No newline at end of file diff --git a/lib/src/main/java/com/trilead/ssh2/signature/RSAPublicKey.java b/lib/src/main/java/com/trilead/ssh2/signature/RSAPublicKey.java deleted file mode 100644 index e7e6611..0000000 --- a/lib/src/main/java/com/trilead/ssh2/signature/RSAPublicKey.java +++ /dev/null @@ -1,31 +0,0 @@ -package com.trilead.ssh2.signature;
-
-import java.math.BigInteger;
-
-/**
- * RSAPublicKey.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RSAPublicKey.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class RSAPublicKey
-{
- BigInteger e;
- BigInteger n;
-
- public RSAPublicKey(BigInteger e, BigInteger n)
- {
- this.e = e;
- this.n = n;
- }
-
- public BigInteger getE()
- {
- return e;
- }
-
- public BigInteger getN()
- {
- return n;
- }
-}
\ No newline at end of file diff --git a/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java b/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java index 8a0f07a..9b5c18e 100644 --- a/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java +++ b/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java @@ -3,9 +3,17 @@ package com.trilead.ssh2.signature; import java.io.IOException;
import java.math.BigInteger;
+import java.security.InvalidKeyException;
+import java.security.KeyFactory;
+import java.security.NoSuchAlgorithmException;
+import java.security.Signature;
+import java.security.SignatureException;
+import java.security.interfaces.RSAPrivateKey;
+import java.security.interfaces.RSAPublicKey;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.KeySpec;
+import java.security.spec.RSAPublicKeySpec;
-import com.trilead.ssh2.crypto.SimpleDERReader;
-import com.trilead.ssh2.crypto.digest.SHA1;
import com.trilead.ssh2.log.Logger;
import com.trilead.ssh2.packets.TypesReader;
import com.trilead.ssh2.packets.TypesWriter;
@@ -36,7 +44,20 @@ public class RSASHA1Verify if (tr.remain() != 0)
throw new IOException("Padding in RSA public key!");
- return new RSAPublicKey(e, n);
+ KeySpec keySpec = new RSAPublicKeySpec(n, e);
+
+ try {
+ KeyFactory kf = KeyFactory.getInstance("RSA");
+ return (RSAPublicKey) kf.generatePublic(keySpec);
+ } catch (NoSuchAlgorithmException nsae) {
+ IOException ioe = new IOException("No RSA KeyFactory available");
+ ioe.initCause(nsae);
+ throw ioe;
+ } catch (InvalidKeySpecException ikse) {
+ IOException ioe = new IOException("No RSA KeyFactory available");
+ ioe.initCause(ikse);
+ throw ioe;
+ }
}
public static byte[] encodeSSHRSAPublicKey(RSAPublicKey pk) throws IOException
@@ -44,13 +65,13 @@ public class RSASHA1Verify TypesWriter tw = new TypesWriter();
tw.writeString("ssh-rsa");
- tw.writeMPInt(pk.getE());
- tw.writeMPInt(pk.getN());
+ tw.writeMPInt(pk.getPublicExponent());
+ tw.writeMPInt(pk.getModulus());
return tw.getBytes();
}
- public static RSASignature decodeSSHRSASignature(byte[] sig) throws IOException
+ public static byte[] decodeSSHRSASignature(byte[] sig) throws IOException
{
TypesReader tr = new TypesReader(sig);
@@ -77,10 +98,22 @@ public class RSASHA1Verify if (tr.remain() != 0)
throw new IOException("Padding in RSA signature!");
- return new RSASignature(new BigInteger(1, s));
+ if (s[0] == 0 && s[1] == 0 && s[2] == 0) {
+ int i = 0;
+ int j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000)
+ | ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff);
+ i += j;
+ j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000)
+ | ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff);
+ byte[] tmp = new byte[j];
+ System.arraycopy(s, i, tmp, 0, j);
+ sig = tmp;
+ }
+
+ return s;
}
- public static byte[] encodeSSHRSASignature(RSASignature sig) throws IOException
+ public static byte[] encodeSSHRSASignature(byte[] s) throws IOException
{
TypesWriter tw = new TypesWriter();
@@ -91,8 +124,6 @@ public class RSASHA1Verify * network byte order)."
*/
- byte[] s = sig.getS().toByteArray();
-
/* Remove first zero sign byte, if present */
if ((s.length > 1) && (s[0] == 0x00))
@@ -103,183 +134,47 @@ public class RSASHA1Verify return tw.getBytes();
}
- public static RSASignature generateSignature(byte[] message, RSAPrivateKey pk) throws IOException
+ public static byte[] generateSignature(byte[] message, RSAPrivateKey pk) throws IOException
{
- SHA1 md = new SHA1();
- md.update(message);
- byte[] sha_message = new byte[md.getDigestLength()];
- md.digest(sha_message);
-
- byte[] der_header = new byte[] { 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00,
- 0x04, 0x14 };
-
- int rsa_block_len = (pk.getN().bitLength() + 7) / 8;
-
- int num_pad = rsa_block_len - (2 + der_header.length + sha_message.length) - 1;
-
- if (num_pad < 8)
- throw new IOException("Cannot sign with RSA, message too long");
-
- byte[] sig = new byte[der_header.length + sha_message.length + 2 + num_pad];
-
- sig[0] = 0x01;
-
- for (int i = 0; i < num_pad; i++)
- {
- sig[i + 1] = (byte) 0xff;
+ try {
+ Signature s = Signature.getInstance("SHA1withRSA");
+ s.initSign(pk);
+ s.update(message);
+ return s.sign();
+ } catch (NoSuchAlgorithmException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ } catch (InvalidKeyException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ } catch (SignatureException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
}
-
- sig[num_pad + 1] = 0x00;
-
- System.arraycopy(der_header, 0, sig, 2 + num_pad, der_header.length);
- System.arraycopy(sha_message, 0, sig, 2 + num_pad + der_header.length, sha_message.length);
-
- BigInteger m = new BigInteger(1, sig);
-
- BigInteger s = m.modPow(pk.getD(), pk.getN());
-
- return new RSASignature(s);
}
- public static boolean verifySignature(byte[] message, RSASignature ds, RSAPublicKey dpk) throws IOException
+ public static boolean verifySignature(byte[] message, byte[] ds, RSAPublicKey dpk) throws IOException
{
- SHA1 md = new SHA1();
- md.update(message);
- byte[] sha_message = new byte[md.getDigestLength()];
- md.digest(sha_message);
-
- BigInteger n = dpk.getN();
- BigInteger e = dpk.getE();
- BigInteger s = ds.getS();
-
- if (n.compareTo(s) <= 0)
- {
- log.log(20, "ssh-rsa signature: n.compareTo(s) <= 0");
- return false;
- }
-
- int rsa_block_len = (n.bitLength() + 7) / 8;
-
- /* And now the show begins */
-
- if (rsa_block_len < 1)
- {
- log.log(20, "ssh-rsa signature: rsa_block_len < 1");
- return false;
- }
-
- byte[] v = s.modPow(e, n).toByteArray();
-
- int startpos = 0;
-
- if ((v.length > 0) && (v[0] == 0x00))
- startpos++;
-
- if ((v.length - startpos) != (rsa_block_len - 1))
- {
- log.log(20, "ssh-rsa signature: (v.length - startpos) != (rsa_block_len - 1)");
- return false;
- }
-
- if (v[startpos] != 0x01)
- {
- log.log(20, "ssh-rsa signature: v[startpos] != 0x01");
- return false;
- }
-
- int pos = startpos + 1;
-
- while (true)
- {
- if (pos >= v.length)
- {
- log.log(20, "ssh-rsa signature: pos >= v.length");
- return false;
- }
- if (v[pos] == 0x00)
- break;
- if (v[pos] != (byte) 0xff)
- {
- log.log(20, "ssh-rsa signature: v[pos] != (byte) 0xff");
- return false;
- }
- pos++;
- }
-
- int num_pad = pos - (startpos + 1);
-
- if (num_pad < 8)
- {
- log.log(20, "ssh-rsa signature: num_pad < 8");
- return false;
- }
-
- pos++;
-
- if (pos >= v.length)
- {
- log.log(20, "ssh-rsa signature: pos >= v.length");
- return false;
- }
-
- SimpleDERReader dr = new SimpleDERReader(v, pos, v.length - pos);
-
- byte[] seq = dr.readSequenceAsByteArray();
-
- if (dr.available() != 0)
- {
- log.log(20, "ssh-rsa signature: dr.available() != 0");
- return false;
- }
-
- dr.resetInput(seq);
-
- /* Read digestAlgorithm */
-
- byte digestAlgorithm[] = dr.readSequenceAsByteArray();
-
- /* Inspired by RFC 3347, however, ignoring the comment regarding old BER based implementations */
-
- if ((digestAlgorithm.length < 8) || (digestAlgorithm.length > 9))
- {
- log.log(20, "ssh-rsa signature: (digestAlgorithm.length < 8) || (digestAlgorithm.length > 9)");
- return false;
- }
-
- byte[] digestAlgorithm_sha1 = new byte[] { 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00 };
-
- for (int i = 0; i < digestAlgorithm.length; i++)
- {
- if (digestAlgorithm[i] != digestAlgorithm_sha1[i])
- {
- log.log(20, "ssh-rsa signature: digestAlgorithm[i] != digestAlgorithm_sha1[i]");
- return false;
- }
- }
-
- byte[] digest = dr.readOctetString();
-
- if (dr.available() != 0)
- {
- log.log(20, "ssh-rsa signature: dr.available() != 0 (II)");
- return false;
- }
-
- if (digest.length != sha_message.length)
- {
- log.log(20, "ssh-rsa signature: digest.length != sha_message.length");
- return false;
+ try {
+ Signature s = Signature.getInstance("SHA1withRSA");
+ s.initVerify(dpk);
+ s.update(message);
+ return s.verify(ds);
+ } catch (NoSuchAlgorithmException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ } catch (InvalidKeyException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
+ } catch (SignatureException e) {
+ IOException ex = new IOException();
+ ex.initCause(e);
+ throw ex;
}
-
- for (int i = 0; i < sha_message.length; i++)
- {
- if (sha_message[i] != digest[i])
- {
- log.log(20, "ssh-rsa signature: sha_message[i] != digest[i]");
- return false;
- }
- }
-
- return true;
}
}
diff --git a/lib/src/main/java/com/trilead/ssh2/signature/RSASignature.java b/lib/src/main/java/com/trilead/ssh2/signature/RSASignature.java deleted file mode 100644 index e04e7ee..0000000 --- a/lib/src/main/java/com/trilead/ssh2/signature/RSASignature.java +++ /dev/null @@ -1,27 +0,0 @@ -
-package com.trilead.ssh2.signature;
-
-import java.math.BigInteger;
-
-
-/**
- * RSASignature.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RSASignature.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-
-public class RSASignature
-{
- BigInteger s;
-
- public BigInteger getS()
- {
- return s;
- }
-
- public RSASignature(BigInteger s)
- {
- this.s = s;
- }
-}
\ No newline at end of file |