diff options
Diffstat (limited to 'SHA3.java')
| -rw-r--r-- | SHA3.java | 154 |
1 files changed, 85 insertions, 69 deletions
@@ -50,27 +50,27 @@ public class SHA3 /** * The bitrate */ - private static long r = 0; + private static int r = 0; /** * The capacity */ - private static long c = 0; + private static int c = 0; /** * The output size */ - private static long n = 0; + private static int n = 0; /** * The state size */ - private static long b = 0; + private static int b = 0; /** * The word size */ - private static long w = 0; + private static int w = 0; /** * The word mask @@ -80,12 +80,12 @@ public class SHA3 /** * ℓ, the binary logarithm of the word size */ - private static long l = 0; + private static int l = 0; /** * 12 + 2ℓ, the number of rounds */ - private static long nr = 0; + private static int nr = 0; /** @@ -98,6 +98,11 @@ public class SHA3 */ private static byte[] M = null; + /** + * Pointer for {@link #M} + */ + private static int mptr = 0; + /** @@ -117,9 +122,9 @@ public class SHA3 * @param n Rotation steps * @return The value rotated */ - private static long rotate(long x, long n) + private static long rotate(long x, int n) { - long m = n % SHA3.w + long m = n % SHA3.w; return (x >>> (SHA3.w - m)) + (x << m); } @@ -131,7 +136,7 @@ public class SHA3 * @param n Rotation steps * @return The value rotated */ - private static long rotate(long x, long n) + private static long rotate64(long x, int n) { return (x >> (SHA3.w - n)) + (x << n); } @@ -143,7 +148,7 @@ public class SHA3 * @param x The value of which to calculate the binary logarithm * @return The binary logarithm */ - private static long lb(long x) + private static int lb(int x) { return (((x & 0xFF00) == 0 ? 0 : 8) + ((x & 0xF0F0) == 0 ? 0 : 4)) + @@ -321,13 +326,13 @@ public class SHA3 SHA3.keccakFRound(A, 0x8000000080008008L); } else - for (long i = 0; i < SHA3.nr; i++) + for (int i = 0; i < SHA3.nr; i++) SHA3.keccakFRound(A, SHA3.RC[i] & SHA3.wmod); } /** - * Convert a chunk of char:s to a word + * Convert a chunk of byte:s to a word * * @param message The message * @param rr Bitrate in bytes @@ -335,10 +340,10 @@ public class SHA3 * @param off The offset in the message * @return Lane */ - private static long toLane(byte[] message, ilong rr, long ww, long off) + private static long toLane(byte[] message, int rr, int ww, int off) { - long n = Math.min(len(message), rr), rc = 0; - for (long i = off + ww - 1; i >= off; i--) + int n = Math.min(message.length, rr), rc = 0; + for (int i = off + ww - 1; i >= off; i--) rc = (rc << 8) | ((i < n) ? message[i] : 0); return rc; } @@ -352,9 +357,9 @@ public class SHA3 * @param off The offset in the message * @return Lane */ - private static long toLane64(byte[] message, long rr, long off) + private static long toLane64(byte[] message, int rr, int off) { - long n = Math.min(len(message), rr), rc = 0; + int n = Math.min(message.length, rr), rc = 0; return ((off + 7 < n) ? (message[off + 7] << 56) : 0) | ((off + 6 < n) ? (message[off + 6] << 48) : 0) | ((off + 5 < n) ? (message[off + 5] << 40) : 0) | @@ -370,36 +375,35 @@ public class SHA3 * pad 10*1 * * @param msg The message to pad + * @parm len The length of the message * @param r The bitrate * @return The message padded */ - private static long[] pad10star1(byte[] msg, long r) + private static byte[] pad10star1(byte[] msg, int len, int r) { - long len = msg.length; - - long nrf = len >> 3; - long nbrf = len & 7; - long ll = len % r; + int nrf = len >> 3; + int nbrf = len & 7; + int ll = len % r; - byte b = nbrf == 0 ? 1 : ((msg[nrf] >> (8 - nbrf)) | (1 << nbrf)); + byte b = (byte)(nbrf == 0 ? 1 : ((msg[nrf] >> (8 - nbrf)) | (1 << nbrf))); - char[] message; + byte[] message; if ((r - 8 <= ll) && (ll <= r - 2)) { - message = new char[len = nrf + 1]; - message[nrf] = b ^ 128; + message = new byte[len = nrf + 1]; + message[nrf] = (byte)(b ^ 128); } else { len = (nrf + 1) << 3; len = ((len - (len % r) + (r - 8)) >> 3) + 1; - message = new char[len]; + message = new byte[len]; message[nrf] = b; //for (long i = nrf + 1; i < len; i++) // message[i + nrf] = 0; message[len - 1] = -128; } - for (long i = 0; i < nrf; i++) + for (int i = 0; i < nrf; i++) message[i] = msg[i]; return message; @@ -413,7 +417,7 @@ public class SHA3 * @param c The capacity * @param n The output size */ - private static void initalise(long r, long c, long n) + private static void initalise(int r, int c, int n) { SHA3.r = r; SHA3.c = c; @@ -424,7 +428,8 @@ public class SHA3 SHA3.nr = 12 + (SHA3.l << 1); SHA3.wmod = (1 << SHA3.w) - 1; SHA3.S = new long[25]; - SHA3.M = new char[(SHA3.r * SHA3.b) >> 3]; + SHA3.M = new byte[(SHA3.r * SHA3.b) >> 2]; + SHA3.mptr = 0; } @@ -433,20 +438,24 @@ public class SHA3 * * @param msg The partial message */ - private static void update(char[] msg) + private static void update(byte[] msg) { - long rr = SHA3.r >> 3; - long ww = SHA3.w >> 3; - - SHA3.M += msg;///////////////// - long len = len(SHA3.M):///////////////// - len -= len % ((SHA3.r * SHA3.b) >> 3);/////////////// - char[] message = SHA3.M[:len];/////////////////// - SHA3.M = SHA3.M[len:];////////////((((( + int rr = SHA3.r >> 3; + int ww = SHA3.w >> 3; + if (SHA3.mptr + msg.length > SHA3.M.length) + System.arraycopy(SHA3.M, 0, SHA3.M = new byte[SHA3.M.length << 1], 0, SHA3.mptr); + System.arraycopy(msg, 0, SHA3.M, SHA3.mptr, msg.length); + SHA3.mptr += msg.length; + int len = SHA3.mptr; + len -= len % ((SHA3.r * SHA3.b) >> 3); + byte[] message; + System.arraycopy(SHA3.M, 0, message = new byte[len], 0, len); + System.arraycopy(SHA3.M, len, SHA3.M, 0, SHA3.mptr -= len); + /* Absorbing phase */ if (ww == 8) - for (long i = 0; i < len; i += rr) + for (int i = 0; i < len; i += rr) { SHA3.S[ 0] ^= SHA3.toLane64(message, rr, i + 0); SHA3.S[ 1] ^= SHA3.toLane64(message, rr, i + 8); @@ -476,9 +485,9 @@ public class SHA3 SHA3.keccakF(SHA3.S); } else - for (long i = 0; i < len; i += rr) + for (int i = 0; i < len; i += rr) { - for (long j = 0; j < 25; j++) + for (int j = 0; j < 25; j++) SHA3.S[j] ^= SHA3.toLane(message, rr, ww, i + j * ww); SHA3.keccakF(SHA3.S); } @@ -488,7 +497,7 @@ public class SHA3 /** * Squeeze the Keccak sponge */ - private static char[] digest() + private static byte[] digest() { return digest(null); } @@ -499,23 +508,30 @@ public class SHA3 * * @param msg The rest of the message */ - private static char[] digest(char[] msg) + private static byte[] digest(byte[] msg) { - if (msg == null) - msg = bytes([]); - message = SHA3.pad10star1(SHA3.M + msg, SHA3.r); + byte[] message; + if ((msg == null) || (msg.length == 0)) + message = SHA3.pad10star1(SHA3.M, SHA3.mptr, SHA3.r); + else + { + if (SHA3.mptr + msg.length > SHA3.M.length) + System.arraycopy(SHA3.M, 0, SHA3.M = new byte[SHA3.M.length << 1], 0, SHA3.mptr); + System.arraycopy(msg, 0, SHA3.M, SHA3.mptr, msg.length); + message = SHA3.pad10star1(SHA3.M, SHA3.mptr + msg.length, SHA3.r); + } SHA3.M = null; - long len = len(message); - char[] rc = new char[(SHA3.n + 7) >> 3]; - long ptr = 0; + int len = message.length; + byte[] rc = new byte[(SHA3.n + 7) >> 3]; + int ptr = 0; - long rr = SHA3.r >> 3; - long nn = SHA3.n >> 3; - long ww = SHA3.w >> 3; + int rr = SHA3.r >> 3; + int nn = SHA3.n >> 3; + int ww = SHA3.w >> 3; /* Absorbing phase */ if (ww == 8) - for (long i = 0; i < len; i += rr) + for (int i = 0; i < len; i += rr) { SHA3.S[ 0] ^= SHA3.toLane64(message, rr, i + 0); SHA3.S[ 1] ^= SHA3.toLane64(message, rr, i + 8); @@ -545,34 +561,34 @@ public class SHA3 SHA3.keccakF(SHA3.S); } else - for (long i = 0; i < len; i += rr) + for (int i = 0; i < len; i += rr) { - for (long j = 0; j < 25; j++) + for (int j = 0; j < 25; j++) SHA3.S[j] ^= SHA3.toLane(message, rr, ww, i + j * ww); SHA3.keccakF(SHA3.S); } /* Squeezing phase */ - long olen = SHA3.n; - long j = 0; - long ni = Math.min(25, rr); + int olen = SHA3.n; + int j = 0; + int ni = Math.min(25, rr); while (olen > 0) { - i = 0; + int i = 0; while ((i < ni) && (j < nn)) { - v = SHA3.S[i]: - for (long _ = 0; _ < ww; _++) + long v = SHA3.S[i]; + for (int _ = 0; _ < ww; _++) { if (j < nn) { - rc[ptr] = v & 255: - ptr += 1: + rc[ptr] = (byte)v; + ptr += 1; } - v >>= 8: - j += 1: + v >>= 8; + j += 1; } - i += 1: + i += 1; } olen -= SHA3.r; if (olen > 0) |