129 if (obuffer != null) {
130 output.write(obuffer);
131 obuffer = null;
132 }
133 };
134
135 /**
136 * Writes <code>b.length</code> bytes from the specified byte array
137 * to this output stream.
138 * <p>
139 * The <code>write</code> method of
140 * <code>CipherOutputStream</code> calls the <code>write</code>
141 * method of three arguments with the three arguments
142 * <code>b</code>, <code>0</code>, and <code>b.length</code>.
143 *
144 * @param b the data.
145 * @exception NullPointerException if <code>b</code> is null.
146 * @exception IOException if an I/O error occurs.
147 * @see javax.crypto.CipherOutputStream#write(byte[], int, int)
148 */
149 public void write(byte b[]) throws IOException {
150 write(b, 0, b.length);
151 }
152
153 /**
154 * Writes <code>len</code> bytes from the specified byte array
155 * starting at offset <code>off</code> to this output stream.
156 *
157 * @param b the data.
158 * @param off the start offset in the data.
159 * @param len the number of bytes to write.
160 * @exception IOException if an I/O error occurs.
161 */
162 public void write(byte b[], int off, int len) throws IOException {
163 obuffer = cipher.update(b, off, len);
164 if (obuffer != null) {
165 output.write(obuffer);
166 obuffer = null;
167 }
168 }
169
170 /**
171 * Flushes this output stream by forcing any buffered output bytes
172 * that have already been processed by the encapsulated cipher object
173 * to be written out.
174 *
175 * <p>Any bytes buffered by the encapsulated cipher
176 * and waiting to be processed by it will not be written out. For example,
177 * if the encapsulated cipher is a block cipher, and the total number of
178 * bytes written using one of the <code>write</code> methods is less than
179 * the cipher's block size, no bytes will be written out.
180 *
181 * @exception IOException if an I/O error occurs.
182 */
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129 if (obuffer != null) {
130 output.write(obuffer);
131 obuffer = null;
132 }
133 };
134
135 /**
136 * Writes <code>b.length</code> bytes from the specified byte array
137 * to this output stream.
138 * <p>
139 * The <code>write</code> method of
140 * <code>CipherOutputStream</code> calls the <code>write</code>
141 * method of three arguments with the three arguments
142 * <code>b</code>, <code>0</code>, and <code>b.length</code>.
143 *
144 * @param b the data.
145 * @exception NullPointerException if <code>b</code> is null.
146 * @exception IOException if an I/O error occurs.
147 * @see javax.crypto.CipherOutputStream#write(byte[], int, int)
148 */
149 public void write(byte[] b) throws IOException {
150 write(b, 0, b.length);
151 }
152
153 /**
154 * Writes <code>len</code> bytes from the specified byte array
155 * starting at offset <code>off</code> to this output stream.
156 *
157 * @param b the data.
158 * @param off the start offset in the data.
159 * @param len the number of bytes to write.
160 * @exception IOException if an I/O error occurs.
161 */
162 public void write(byte[] b, int off, int len) throws IOException {
163 obuffer = cipher.update(b, off, len);
164 if (obuffer != null) {
165 output.write(obuffer);
166 obuffer = null;
167 }
168 }
169
170 /**
171 * Flushes this output stream by forcing any buffered output bytes
172 * that have already been processed by the encapsulated cipher object
173 * to be written out.
174 *
175 * <p>Any bytes buffered by the encapsulated cipher
176 * and waiting to be processed by it will not be written out. For example,
177 * if the encapsulated cipher is a block cipher, and the total number of
178 * bytes written using one of the <code>write</code> methods is less than
179 * the cipher's block size, no bytes will be written out.
180 *
181 * @exception IOException if an I/O error occurs.
182 */
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