public abstract class Base64
extends java.lang.Object
Base64
class provides static methods to convert
back and forth between binary and base64-encoded data.Modifier and Type | Field and Description |
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private static byte[] |
decodingBase64Alephbeth
Mapping from base64 alphabet to binary 0-63.
|
private static byte[] |
encodingBase64Alephbeth
Mapping from binary 0-63 to base64 alphabet according to RFC 2045.
|
Constructor and Description |
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Base64() |
Modifier and Type | Method and Description |
---|---|
static int |
decode(byte[] encodedData,
int encodedOffset,
int length,
byte[] binaryData,
int binaryOffset)
Converts base64 encoded data into binary data.
|
static int |
encode(byte[] binaryData,
int binaryOffset,
int length,
byte[] encodedData,
int encodedOffset)
Converts binary data into base64 encoded data.
|
private static final byte[] encodingBase64Alephbeth
private static final byte[] decodingBase64Alephbeth
public static int encode(byte[] binaryData, int binaryOffset, int length, byte[] encodedData, int encodedOffset)
binaryData
- Binary data to be encoded.binaryOffset
- Offset into binaryData
where to
the data to be encoded begins.length
- Length of data to encode.encodedData
- Buffer receiving base64 encoded data.encodedOffset
- Offset into encodedData
where the
store base64 encoded data.public static int decode(byte[] encodedData, int encodedOffset, int length, byte[] binaryData, int binaryOffset)
encodedData
- Base64 encoded data.encodedOffset
- Offset into encodedData
where the
base64 encoded data starts.length
- Length of encoded data.binaryData
- Decoded (binary) data.binaryOffset
- Offset into binaryData
where to
store the decoded binary data.