public final class ChaChaCore extends Object
| Modifier and Type | Method and Description |
|---|---|
static void | hash(int[] output,
int[] input)Hashes an input block with ChaCha20. |
static void | initIV(int[] output,
long iv)Initializes the 64-bit initialization vector in a ChaCha20 block. |
static void | initKey256(int[] output,
byte[] key,
int offset)Initializes a ChaCha20 block with a 256-bit key. |
static void | xorBlock(byte[] input,
int inputOffset,
byte[] output,
int outputOffset,
int length,
int[] block)XOR's the output of ChaCha20 with a byte buffer. |
public static void hash(int[] output,
int[] input)output - The output block, which must contain at least 16
elements and must not overlap with the input.input - The input block, which must contain at least 16
elements.public static void initIV(int[] output,
long iv)output - The output block, which must consist of at
least 16 words and must have been initialized by initKey256()
or initKey128().iv - The 64-bit initialization vector value.
The counter portion of the output block is set to zero.public static void initKey256(int[] output,
byte[] key,
int offset)output - The output block, which must consist of at
least 16 words.key - The buffer containing the key.offset - Offset of the key in the buffer.public static void xorBlock(byte[] input,
int inputOffset,
byte[] output,
int outputOffset,
int length,
int[] block)input - The input byte buffer.inputOffset - The offset of the first input byte.output - The output byte buffer (can be the same as the input).outputOffset - The offset of the first output byte.length - The number of bytes to XOR between 1 and 64.block - The ChaCha20 output block.