diff options
Diffstat (limited to 'gnu/java/security/key/rsa/RSAKeyPairRawCodec.java')
| -rw-r--r-- | gnu/java/security/key/rsa/RSAKeyPairRawCodec.java | 210 |
1 files changed, 89 insertions, 121 deletions
diff --git a/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java b/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java index fb7cea99e..c2650e6a4 100644 --- a/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java +++ b/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java @@ -47,80 +47,60 @@ import java.security.PrivateKey; import java.security.PublicKey; /** - * <p>An object that implements the {@link IKeyPairCodec} interface for the - * <i>Raw</i> format to use with RSA keypairs.</p> - * - * @version $Revision: 1.1 $ + * An object that implements the {@link IKeyPairCodec} interface for the <i>Raw</i> + * format to use with RSA keypairs. */ -public class RSAKeyPairRawCodec implements IKeyPairCodec +public class RSAKeyPairRawCodec + implements IKeyPairCodec { - - // Constants and variables - // ------------------------------------------------------------------------- - - // Constructor(s) - // ------------------------------------------------------------------------- - // implicit 0-arguments constructor - // Class methods - // ------------------------------------------------------------------------- - - // Instance methods - // ------------------------------------------------------------------------- - - // gnu.crypto.key.IKeyPairCodec interface implementation ------------------- - public int getFormatID() { return RAW_FORMAT; } /** - * <p>Returns the encoded form of the designated RSA public key according to - * the <i>Raw</i> format supported by this library.</p> - * - * <p>The <i>Raw</i> format for an RSA public key, in this implementation, is - * a byte sequence consisting of the following:</p> - * + * Returns the encoded form of the designated RSA public key according to the + * <i>Raw</i> format supported by this library. + * <p> + * The <i>Raw</i> format for an RSA public key, in this implementation, is a + * byte sequence consisting of the following: * <ol> - * <li>4-byte magic consisting of the value of the literal - * {@link Registry#MAGIC_RAW_RSA_PUBLIC_KEY},<li> - * <li>1-byte version consisting of the constant: 0x01,</li> - * <li>4-byte count of following bytes representing the RSA parameter - * <code>n</code> (the modulus) in internet order,</li> - * <li>n-bytes representation of a {@link BigInteger} obtained by invoking - * the <code>toByteArray()</code> method on the RSA parameter <code>n</code>,</li> - * <li>4-byte count of following bytes representing the RSA parameter - * <code>e</code> (the public exponent) in internet order,</li> - * <li>n-bytes representation of a {@link BigInteger} obtained by invoking - * the <code>toByteArray()</code> method on the RSA parameter <code>e</code>.</li> + * <li>4-byte magic consisting of the value of the literal + * {@link Registry#MAGIC_RAW_RSA_PUBLIC_KEY},</li> + * <li>1-byte version consisting of the constant: 0x01,</li> + * <li>4-byte count of following bytes representing the RSA parameter + * <code>n</code> (the modulus) in internet order,</li> + * <li>n-bytes representation of a {@link BigInteger} obtained by invoking + * the <code>toByteArray()</code> method on the RSA parameter <code>n</code>, + * </li> + * <li>4-byte count of following bytes representing the RSA parameter + * <code>e</code> (the public exponent) in internet order,</li> + * <li>n-bytes representation of a {@link BigInteger} obtained by invoking + * the <code>toByteArray()</code> method on the RSA parameter <code>e</code>. + * </li> * </ol> - * + * * @param key the key to encode. * @return the <i>Raw</i> format encoding of the designated key. * @exception IllegalArgumentException if the designated key is not an RSA - * one. + * one. */ public byte[] encodePublicKey(PublicKey key) { - if (!(key instanceof GnuRSAPublicKey)) - { - throw new IllegalArgumentException("key"); - } + if (! (key instanceof GnuRSAPublicKey)) + throw new IllegalArgumentException("key"); GnuRSAPublicKey rsaKey = (GnuRSAPublicKey) key; ByteArrayOutputStream baos = new ByteArrayOutputStream(); - // magic baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[0]); baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[1]); baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[2]); baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[3]); - // version baos.write(0x01); - // n byte[] buffer = rsaKey.getModulus().toByteArray(); int length = buffer.length; @@ -129,7 +109,6 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec baos.write((length >>> 8) & 0xFF); baos.write(length & 0xFF); baos.write(buffer, 0, length); - // e buffer = rsaKey.getPublicExponent().toByteArray(); length = buffer.length; @@ -138,7 +117,6 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec baos.write((length >>> 8) & 0xFF); baos.write(length & 0xFF); baos.write(buffer, 0, length); - return baos.toByteArray(); } @@ -149,92 +127,87 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec || k[1] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[1] || k[2] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[2] || k[3] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[3]) - { - throw new IllegalArgumentException("magic"); - } + throw new IllegalArgumentException("magic"); // version if (k[4] != 0x01) - { - throw new IllegalArgumentException("version"); - } - int i = 5; + throw new IllegalArgumentException("version"); + int i = 5; int l; byte[] buffer; - // n - l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 - | (k[i++] & 0xFF); + l = k[i++] << 24 + | (k[i++] & 0xFF) << 16 + | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); buffer = new byte[l]; System.arraycopy(k, i, buffer, 0, l); i += l; BigInteger n = new BigInteger(1, buffer); - // e - l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 - | (k[i++] & 0xFF); + l = k[i++] << 24 + | (k[i++] & 0xFF) << 16 + | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); buffer = new byte[l]; System.arraycopy(k, i, buffer, 0, l); i += l; BigInteger e = new BigInteger(1, buffer); - return new GnuRSAPublicKey(n, e); } /** - * <p>Returns the encoded form of the designated RSA private key according to - * the <i>Raw</i> format supported by this library.</p> - * - * <p>The <i>Raw</i> format for an RSA private key, in this implementation, - * is a byte sequence consisting of the following:</p> - * + * Returns the encoded form of the designated RSA private key according to the + * <i>Raw</i> format supported by this library. + * <p> + * The <i>Raw</i> format for an RSA private key, in this implementation, is a + * byte sequence consisting of the following: * <ol> - * <li>4-byte magic consisting of the value of the literal - * {@link Registry#MAGIC_RAW_RSA_PRIVATE_KEY},<li> - * <li>1-byte version consisting of the constant: 0x01,</li> - * <li>4-byte count of following bytes representing the RSA parameter - * <code>p</code> (the first prime factor of the modulus) in internet - * order,</li> - * <li>n-bytes representation of a {@link BigInteger} obtained by invoking - * the <code>toByteArray()</code> method on the RSA parameter <code>p</code>,</li> - * <li>4-byte count of following bytes representing the RSA parameter - * <code>q</code> (the second prime factor of the modulus) in internet - * order,</li> - * <li>n-bytes representation of a {@link BigInteger} obtained by invoking - * the <code>toByteArray()</code> method on the RSA parameter <code>q</code>,</li> - * <li>4-byte count of following bytes representing the RSA parameter - * <code>e</code> (the public exponent) in internet order,</li> - * <li>n-bytes representation of a {@link BigInteger} obtained by invoking - * the <code>toByteArray()</code> method on the RSA parameter <code>e</code>,</li> - * <li>4-byte count of following bytes representing the RSA parameter - * <code>d</code> (the private exponent) in internet order,</li> - * <li>n-bytes representation of a {@link BigInteger} obtained by invoking - * the <code>toByteArray()</code> method on the RSA parameter <code>d</code>,</li> + * <li>4-byte magic consisting of the value of the literal + * {@link Registry#MAGIC_RAW_RSA_PRIVATE_KEY},</li> + * <li>1-byte version consisting of the constant: 0x01,</li> + * <li>4-byte count of following bytes representing the RSA parameter + * <code>p</code> (the first prime factor of the modulus) in internet order, + * </li> + * <li>n-bytes representation of a {@link BigInteger} obtained by invoking + * the <code>toByteArray()</code> method on the RSA parameter <code>p</code>, + * </li> + * <li>4-byte count of following bytes representing the RSA parameter + * <code>q</code> (the second prime factor of the modulus) in internet + * order,</li> + * <li>n-bytes representation of a {@link BigInteger} obtained by invoking + * the <code>toByteArray()</code> method on the RSA parameter <code>q</code>, + * </li> + * <li>4-byte count of following bytes representing the RSA parameter + * <code>e</code> (the public exponent) in internet order,</li> + * <li>n-bytes representation of a {@link BigInteger} obtained by invoking + * the <code>toByteArray()</code> method on the RSA parameter <code>e</code>, + * </li> + * <li>4-byte count of following bytes representing the RSA parameter + * <code>d</code> (the private exponent) in internet order,</li> + * <li>n-bytes representation of a {@link BigInteger} obtained by invoking + * the <code>toByteArray()</code> method on the RSA parameter <code>d</code>, + * </li> * </ol> - * + * * @param key the key to encode. * @return the <i>Raw</i> format encoding of the designated key. */ public byte[] encodePrivateKey(PrivateKey key) { - if (!(key instanceof GnuRSAPrivateKey)) - { - throw new IllegalArgumentException("key"); - } + if (! (key instanceof GnuRSAPrivateKey)) + throw new IllegalArgumentException("key"); GnuRSAPrivateKey rsaKey = (GnuRSAPrivateKey) key; ByteArrayOutputStream baos = new ByteArrayOutputStream(); - // magic baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[0]); baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[1]); baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[2]); baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[3]); - // version baos.write(0x01); - // p byte[] buffer = rsaKey.getPrimeP().toByteArray(); int length = buffer.length; @@ -243,7 +216,6 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec baos.write((length >>> 8) & 0xFF); baos.write(length & 0xFF); baos.write(buffer, 0, length); - // q buffer = rsaKey.getPrimeQ().toByteArray(); length = buffer.length; @@ -252,7 +224,6 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec baos.write((length >>> 8) & 0xFF); baos.write(length & 0xFF); baos.write(buffer, 0, length); - // e buffer = rsaKey.getPublicExponent().toByteArray(); length = buffer.length; @@ -261,7 +232,6 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec baos.write((length >>> 8) & 0xFF); baos.write(length & 0xFF); baos.write(buffer, 0, length); - // d buffer = rsaKey.getPrivateExponent().toByteArray(); length = buffer.length; @@ -270,7 +240,6 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec baos.write((length >>> 8) & 0xFF); baos.write(length & 0xFF); baos.write(buffer, 0, length); - return baos.toByteArray(); } @@ -281,52 +250,51 @@ public class RSAKeyPairRawCodec implements IKeyPairCodec || k[1] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[1] || k[2] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[2] || k[3] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[3]) - { - throw new IllegalArgumentException("magic"); - } + throw new IllegalArgumentException("magic"); // version if (k[4] != 0x01) - { - throw new IllegalArgumentException("version"); - } - int i = 5; + throw new IllegalArgumentException("version"); + int i = 5; int l; byte[] buffer; - // p - l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 - | (k[i++] & 0xFF); + l = k[i++] << 24 + | (k[i++] & 0xFF) << 16 + | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); buffer = new byte[l]; System.arraycopy(k, i, buffer, 0, l); i += l; BigInteger p = new BigInteger(1, buffer); - // q - l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 - | (k[i++] & 0xFF); + l = k[i++] << 24 + | (k[i++] & 0xFF) << 16 + | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); buffer = new byte[l]; System.arraycopy(k, i, buffer, 0, l); i += l; BigInteger q = new BigInteger(1, buffer); - // e - l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 - | (k[i++] & 0xFF); + l = k[i++] << 24 + | (k[i++] & 0xFF) << 16 + | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); buffer = new byte[l]; System.arraycopy(k, i, buffer, 0, l); i += l; BigInteger e = new BigInteger(1, buffer); - // d - l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 - | (k[i++] & 0xFF); + l = k[i++] << 24 + | (k[i++] & 0xFF) << 16 + | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); buffer = new byte[l]; System.arraycopy(k, i, buffer, 0, l); i += l; BigInteger d = new BigInteger(1, buffer); - return new GnuRSAPrivateKey(p, q, e, d); } } |