diff options
author | Parménides GV <parmegv@sdf.org> | 2014-04-07 20:43:34 +0200 |
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committer | Parménides GV <parmegv@sdf.org> | 2014-04-08 11:43:27 +0200 |
commit | c206a91d320995f37f8abb33188bfd384249da3d (patch) | |
tree | 10a7d8a9dd7f24437ac4851b8d01edbd5dd3ee3b /src/org/spongycastle/util/encoders | |
parent | 910b0e1746ab3f63e63808b198ad51fec5b635e5 (diff) |
Next step: compile jni sources correctly.
Diffstat (limited to 'src/org/spongycastle/util/encoders')
-rw-r--r-- | src/org/spongycastle/util/encoders/Base64.java | 121 | ||||
-rw-r--r-- | src/org/spongycastle/util/encoders/Base64Encoder.java | 298 | ||||
-rw-r--r-- | src/org/spongycastle/util/encoders/Encoder.java | 17 |
3 files changed, 0 insertions, 436 deletions
diff --git a/src/org/spongycastle/util/encoders/Base64.java b/src/org/spongycastle/util/encoders/Base64.java deleted file mode 100644 index 87bd80a0..00000000 --- a/src/org/spongycastle/util/encoders/Base64.java +++ /dev/null @@ -1,121 +0,0 @@ -package org.spongycastle.util.encoders; - -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.io.OutputStream; - -public class Base64 -{ - private static final Encoder encoder = new Base64Encoder(); - - /** - * encode the input data producing a base 64 encoded byte array. - * - * @return a byte array containing the base 64 encoded data. - */ - public static byte[] encode( - byte[] data) - { - int len = (data.length + 2) / 3 * 4; - ByteArrayOutputStream bOut = new ByteArrayOutputStream(len); - - try - { - encoder.encode(data, 0, data.length, bOut); - } - catch (IOException e) - { - throw new RuntimeException("exception encoding base64 string: " + e); - } - - return bOut.toByteArray(); - } - - /** - * Encode the byte data to base 64 writing it to the given output stream. - * - * @return the number of bytes produced. - */ - public static int encode( - byte[] data, - OutputStream out) - throws IOException - { - return encoder.encode(data, 0, data.length, out); - } - - /** - * Encode the byte data to base 64 writing it to the given output stream. - * - * @return the number of bytes produced. - */ - public static int encode( - byte[] data, - int off, - int length, - OutputStream out) - throws IOException - { - return encoder.encode(data, off, length, out); - } - - /** - * decode the base 64 encoded input data. It is assumed the input data is valid. - * - * @return a byte array representing the decoded data. - */ - public static byte[] decode( - byte[] data) - { - int len = data.length / 4 * 3; - ByteArrayOutputStream bOut = new ByteArrayOutputStream(len); - - try - { - encoder.decode(data, 0, data.length, bOut); - } - catch (IOException e) - { - throw new RuntimeException("exception decoding base64 string: " + e); - } - - return bOut.toByteArray(); - } - - /** - * decode the base 64 encoded String data - whitespace will be ignored. - * - * @return a byte array representing the decoded data. - */ - public static byte[] decode( - String data) - { - int len = data.length() / 4 * 3; - ByteArrayOutputStream bOut = new ByteArrayOutputStream(len); - - try - { - encoder.decode(data, bOut); - } - catch (IOException e) - { - throw new RuntimeException("exception decoding base64 string: " + e); - } - - return bOut.toByteArray(); - } - - /** - * decode the base 64 encoded String data writing it to the given output stream, - * whitespace characters will be ignored. - * - * @return the number of bytes produced. - */ - public static int decode( - String data, - OutputStream out) - throws IOException - { - return encoder.decode(data, out); - } -} diff --git a/src/org/spongycastle/util/encoders/Base64Encoder.java b/src/org/spongycastle/util/encoders/Base64Encoder.java deleted file mode 100644 index 84060707..00000000 --- a/src/org/spongycastle/util/encoders/Base64Encoder.java +++ /dev/null @@ -1,298 +0,0 @@ -package org.spongycastle.util.encoders; - -import java.io.IOException; -import java.io.OutputStream; - -public class Base64Encoder - implements Encoder -{ - protected final byte[] encodingTable = - { - (byte)'A', (byte)'B', (byte)'C', (byte)'D', (byte)'E', (byte)'F', (byte)'G', - (byte)'H', (byte)'I', (byte)'J', (byte)'K', (byte)'L', (byte)'M', (byte)'N', - (byte)'O', (byte)'P', (byte)'Q', (byte)'R', (byte)'S', (byte)'T', (byte)'U', - (byte)'V', (byte)'W', (byte)'X', (byte)'Y', (byte)'Z', - (byte)'a', (byte)'b', (byte)'c', (byte)'d', (byte)'e', (byte)'f', (byte)'g', - (byte)'h', (byte)'i', (byte)'j', (byte)'k', (byte)'l', (byte)'m', (byte)'n', - (byte)'o', (byte)'p', (byte)'q', (byte)'r', (byte)'s', (byte)'t', (byte)'u', - (byte)'v', - (byte)'w', (byte)'x', (byte)'y', (byte)'z', - (byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5', (byte)'6', - (byte)'7', (byte)'8', (byte)'9', - (byte)'+', (byte)'/' - }; - - protected byte padding = (byte)'='; - - /* - * set up the decoding table. - */ - protected final byte[] decodingTable = new byte[128]; - - protected void initialiseDecodingTable() - { - for (int i = 0; i < encodingTable.length; i++) - { - decodingTable[encodingTable[i]] = (byte)i; - } - } - - public Base64Encoder() - { - initialiseDecodingTable(); - } - - /** - * encode the input data producing a base 64 output stream. - * - * @return the number of bytes produced. - */ - public int encode( - byte[] data, - int off, - int length, - OutputStream out) - throws IOException - { - int modulus = length % 3; - int dataLength = (length - modulus); - int a1, a2, a3; - - for (int i = off; i < off + dataLength; i += 3) - { - a1 = data[i] & 0xff; - a2 = data[i + 1] & 0xff; - a3 = data[i + 2] & 0xff; - - out.write(encodingTable[(a1 >>> 2) & 0x3f]); - out.write(encodingTable[((a1 << 4) | (a2 >>> 4)) & 0x3f]); - out.write(encodingTable[((a2 << 2) | (a3 >>> 6)) & 0x3f]); - out.write(encodingTable[a3 & 0x3f]); - } - - /* - * process the tail end. - */ - int b1, b2, b3; - int d1, d2; - - switch (modulus) - { - case 0: /* nothing left to do */ - break; - case 1: - d1 = data[off + dataLength] & 0xff; - b1 = (d1 >>> 2) & 0x3f; - b2 = (d1 << 4) & 0x3f; - - out.write(encodingTable[b1]); - out.write(encodingTable[b2]); - out.write(padding); - out.write(padding); - break; - case 2: - d1 = data[off + dataLength] & 0xff; - d2 = data[off + dataLength + 1] & 0xff; - - b1 = (d1 >>> 2) & 0x3f; - b2 = ((d1 << 4) | (d2 >>> 4)) & 0x3f; - b3 = (d2 << 2) & 0x3f; - - out.write(encodingTable[b1]); - out.write(encodingTable[b2]); - out.write(encodingTable[b3]); - out.write(padding); - break; - } - - return (dataLength / 3) * 4 + ((modulus == 0) ? 0 : 4); - } - - private boolean ignore( - char c) - { - return (c == '\n' || c =='\r' || c == '\t' || c == ' '); - } - - /** - * decode the base 64 encoded byte data writing it to the given output stream, - * whitespace characters will be ignored. - * - * @return the number of bytes produced. - */ - public int decode( - byte[] data, - int off, - int length, - OutputStream out) - throws IOException - { - byte b1, b2, b3, b4; - int outLen = 0; - - int end = off + length; - - while (end > off) - { - if (!ignore((char)data[end - 1])) - { - break; - } - - end--; - } - - int i = off; - int finish = end - 4; - - i = nextI(data, i, finish); - - while (i < finish) - { - b1 = decodingTable[data[i++]]; - - i = nextI(data, i, finish); - - b2 = decodingTable[data[i++]]; - - i = nextI(data, i, finish); - - b3 = decodingTable[data[i++]]; - - i = nextI(data, i, finish); - - b4 = decodingTable[data[i++]]; - - out.write((b1 << 2) | (b2 >> 4)); - out.write((b2 << 4) | (b3 >> 2)); - out.write((b3 << 6) | b4); - - outLen += 3; - - i = nextI(data, i, finish); - } - - outLen += decodeLastBlock(out, (char)data[end - 4], (char)data[end - 3], (char)data[end - 2], (char)data[end - 1]); - - return outLen; - } - - private int nextI(byte[] data, int i, int finish) - { - while ((i < finish) && ignore((char)data[i])) - { - i++; - } - return i; - } - - /** - * decode the base 64 encoded String data writing it to the given output stream, - * whitespace characters will be ignored. - * - * @return the number of bytes produced. - */ - public int decode( - String data, - OutputStream out) - throws IOException - { - byte b1, b2, b3, b4; - int length = 0; - - int end = data.length(); - - while (end > 0) - { - if (!ignore(data.charAt(end - 1))) - { - break; - } - - end--; - } - - int i = 0; - int finish = end - 4; - - i = nextI(data, i, finish); - - while (i < finish) - { - b1 = decodingTable[data.charAt(i++)]; - - i = nextI(data, i, finish); - - b2 = decodingTable[data.charAt(i++)]; - - i = nextI(data, i, finish); - - b3 = decodingTable[data.charAt(i++)]; - - i = nextI(data, i, finish); - - b4 = decodingTable[data.charAt(i++)]; - - out.write((b1 << 2) | (b2 >> 4)); - out.write((b2 << 4) | (b3 >> 2)); - out.write((b3 << 6) | b4); - - length += 3; - - i = nextI(data, i, finish); - } - - length += decodeLastBlock(out, data.charAt(end - 4), data.charAt(end - 3), data.charAt(end - 2), data.charAt(end - 1)); - - return length; - } - - private int decodeLastBlock(OutputStream out, char c1, char c2, char c3, char c4) - throws IOException - { - byte b1, b2, b3, b4; - - if (c3 == padding) - { - b1 = decodingTable[c1]; - b2 = decodingTable[c2]; - - out.write((b1 << 2) | (b2 >> 4)); - - return 1; - } - else if (c4 == padding) - { - b1 = decodingTable[c1]; - b2 = decodingTable[c2]; - b3 = decodingTable[c3]; - - out.write((b1 << 2) | (b2 >> 4)); - out.write((b2 << 4) | (b3 >> 2)); - - return 2; - } - else - { - b1 = decodingTable[c1]; - b2 = decodingTable[c2]; - b3 = decodingTable[c3]; - b4 = decodingTable[c4]; - - out.write((b1 << 2) | (b2 >> 4)); - out.write((b2 << 4) | (b3 >> 2)); - out.write((b3 << 6) | b4); - - return 3; - } - } - - private int nextI(String data, int i, int finish) - { - while ((i < finish) && ignore(data.charAt(i))) - { - i++; - } - return i; - } -} diff --git a/src/org/spongycastle/util/encoders/Encoder.java b/src/org/spongycastle/util/encoders/Encoder.java deleted file mode 100644 index 106c36b7..00000000 --- a/src/org/spongycastle/util/encoders/Encoder.java +++ /dev/null @@ -1,17 +0,0 @@ -package org.spongycastle.util.encoders; - -import java.io.IOException; -import java.io.OutputStream; - -/** - * Encode and decode byte arrays (typically from binary to 7-bit ASCII - * encodings). - */ -public interface Encoder -{ - int encode(byte[] data, int off, int length, OutputStream out) throws IOException; - - int decode(byte[] data, int off, int length, OutputStream out) throws IOException; - - int decode(String data, OutputStream out) throws IOException; -} |