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Diffstat (limited to 'core/src/main/java/org/bouncycastle/crypto/digests/SHA224Digest.java')
-rw-r--r--core/src/main/java/org/bouncycastle/crypto/digests/SHA224Digest.java356
1 files changed, 0 insertions, 356 deletions
diff --git a/core/src/main/java/org/bouncycastle/crypto/digests/SHA224Digest.java b/core/src/main/java/org/bouncycastle/crypto/digests/SHA224Digest.java
deleted file mode 100644
index 4f2b2842..00000000
--- a/core/src/main/java/org/bouncycastle/crypto/digests/SHA224Digest.java
+++ /dev/null
@@ -1,356 +0,0 @@
-package org.bouncycastle.crypto.digests;
-
-
-import org.bouncycastle.util.Memoable;
-import org.bouncycastle.util.Pack;
-
-
-/**
- * SHA-224 as described in RFC 3874
- * <pre>
- * block word digest
- * SHA-1 512 32 160
- * SHA-224 512 32 224
- * SHA-256 512 32 256
- * SHA-384 1024 64 384
- * SHA-512 1024 64 512
- * </pre>
- */
-public class SHA224Digest
- extends GeneralDigest
- implements EncodableDigest
-{
- private static final int DIGEST_LENGTH = 28;
-
- private int H1, H2, H3, H4, H5, H6, H7, H8;
-
- private int[] X = new int[64];
- private int xOff;
-
- /**
- * Standard constructor
- */
- public SHA224Digest()
- {
- reset();
- }
-
- /**
- * Copy constructor. This will copy the state of the provided
- * message digest.
- */
- public SHA224Digest(SHA224Digest t)
- {
- super(t);
-
- doCopy(t);
- }
-
- private void doCopy(SHA224Digest t)
- {
- super.copyIn(t);
-
- H1 = t.H1;
- H2 = t.H2;
- H3 = t.H3;
- H4 = t.H4;
- H5 = t.H5;
- H6 = t.H6;
- H7 = t.H7;
- H8 = t.H8;
-
- System.arraycopy(t.X, 0, X, 0, t.X.length);
- xOff = t.xOff;
- }
-
- public SHA224Digest(byte[] encodedState)
- {
- super(encodedState);
-
- H1 = Pack.bigEndianToInt(encodedState, 16);
- H2 = Pack.bigEndianToInt(encodedState, 20);
- H3 = Pack.bigEndianToInt(encodedState, 24);
- H4 = Pack.bigEndianToInt(encodedState, 28);
- H5 = Pack.bigEndianToInt(encodedState, 32);
- H6 = Pack.bigEndianToInt(encodedState, 36);
- H7 = Pack.bigEndianToInt(encodedState, 40);
- H8 = Pack.bigEndianToInt(encodedState, 44);
-
- xOff = Pack.bigEndianToInt(encodedState, 48);
- for (int i = 0; i != xOff; i++)
- {
- X[i] = Pack.bigEndianToInt(encodedState, 52 + (i * 4));
- }
- }
-
- public String getAlgorithmName()
- {
- return "SHA-224";
- }
-
- public int getDigestSize()
- {
- return DIGEST_LENGTH;
- }
-
- protected void processWord(
- byte[] in,
- int inOff)
- {
- // Note: Inlined for performance
-// X[xOff] = Pack.bigEndianToInt(in, inOff);
- int n = in[ inOff] << 24;
- n |= (in[++inOff] & 0xff) << 16;
- n |= (in[++inOff] & 0xff) << 8;
- n |= (in[++inOff] & 0xff);
- X[xOff] = n;
-
- if (++xOff == 16)
- {
- processBlock();
- }
- }
-
- protected void processLength(
- long bitLength)
- {
- if (xOff > 14)
- {
- processBlock();
- }
-
- X[14] = (int)(bitLength >>> 32);
- X[15] = (int)(bitLength & 0xffffffff);
- }
-
- public int doFinal(
- byte[] out,
- int outOff)
- {
- finish();
-
- Pack.intToBigEndian(H1, out, outOff);
- Pack.intToBigEndian(H2, out, outOff + 4);
- Pack.intToBigEndian(H3, out, outOff + 8);
- Pack.intToBigEndian(H4, out, outOff + 12);
- Pack.intToBigEndian(H5, out, outOff + 16);
- Pack.intToBigEndian(H6, out, outOff + 20);
- Pack.intToBigEndian(H7, out, outOff + 24);
-
- reset();
-
- return DIGEST_LENGTH;
- }
-
- /**
- * reset the chaining variables
- */
- public void reset()
- {
- super.reset();
-
- /* SHA-224 initial hash value
- */
-
- H1 = 0xc1059ed8;
- H2 = 0x367cd507;
- H3 = 0x3070dd17;
- H4 = 0xf70e5939;
- H5 = 0xffc00b31;
- H6 = 0x68581511;
- H7 = 0x64f98fa7;
- H8 = 0xbefa4fa4;
-
- xOff = 0;
- for (int i = 0; i != X.length; i++)
- {
- X[i] = 0;
- }
- }
-
- protected void processBlock()
- {
- //
- // expand 16 word block into 64 word blocks.
- //
- for (int t = 16; t <= 63; t++)
- {
- X[t] = Theta1(X[t - 2]) + X[t - 7] + Theta0(X[t - 15]) + X[t - 16];
- }
-
- //
- // set up working variables.
- //
- int a = H1;
- int b = H2;
- int c = H3;
- int d = H4;
- int e = H5;
- int f = H6;
- int g = H7;
- int h = H8;
-
-
- int t = 0;
- for(int i = 0; i < 8; i ++)
- {
- // t = 8 * i
- h += Sum1(e) + Ch(e, f, g) + K[t] + X[t];
- d += h;
- h += Sum0(a) + Maj(a, b, c);
- ++t;
-
- // t = 8 * i + 1
- g += Sum1(d) + Ch(d, e, f) + K[t] + X[t];
- c += g;
- g += Sum0(h) + Maj(h, a, b);
- ++t;
-
- // t = 8 * i + 2
- f += Sum1(c) + Ch(c, d, e) + K[t] + X[t];
- b += f;
- f += Sum0(g) + Maj(g, h, a);
- ++t;
-
- // t = 8 * i + 3
- e += Sum1(b) + Ch(b, c, d) + K[t] + X[t];
- a += e;
- e += Sum0(f) + Maj(f, g, h);
- ++t;
-
- // t = 8 * i + 4
- d += Sum1(a) + Ch(a, b, c) + K[t] + X[t];
- h += d;
- d += Sum0(e) + Maj(e, f, g);
- ++t;
-
- // t = 8 * i + 5
- c += Sum1(h) + Ch(h, a, b) + K[t] + X[t];
- g += c;
- c += Sum0(d) + Maj(d, e, f);
- ++t;
-
- // t = 8 * i + 6
- b += Sum1(g) + Ch(g, h, a) + K[t] + X[t];
- f += b;
- b += Sum0(c) + Maj(c, d, e);
- ++t;
-
- // t = 8 * i + 7
- a += Sum1(f) + Ch(f, g, h) + K[t] + X[t];
- e += a;
- a += Sum0(b) + Maj(b, c, d);
- ++t;
- }
-
- H1 += a;
- H2 += b;
- H3 += c;
- H4 += d;
- H5 += e;
- H6 += f;
- H7 += g;
- H8 += h;
-
- //
- // reset the offset and clean out the word buffer.
- //
- xOff = 0;
- for (int i = 0; i < 16; i++)
- {
- X[i] = 0;
- }
- }
-
- /* SHA-224 functions */
- private int Ch(
- int x,
- int y,
- int z)
- {
- return ((x & y) ^ ((~x) & z));
- }
-
- private int Maj(
- int x,
- int y,
- int z)
- {
- return ((x & y) ^ (x & z) ^ (y & z));
- }
-
- private int Sum0(
- int x)
- {
- return ((x >>> 2) | (x << 30)) ^ ((x >>> 13) | (x << 19)) ^ ((x >>> 22) | (x << 10));
- }
-
- private int Sum1(
- int x)
- {
- return ((x >>> 6) | (x << 26)) ^ ((x >>> 11) | (x << 21)) ^ ((x >>> 25) | (x << 7));
- }
-
- private int Theta0(
- int x)
- {
- return ((x >>> 7) | (x << 25)) ^ ((x >>> 18) | (x << 14)) ^ (x >>> 3);
- }
-
- private int Theta1(
- int x)
- {
- return ((x >>> 17) | (x << 15)) ^ ((x >>> 19) | (x << 13)) ^ (x >>> 10);
- }
-
- /* SHA-224 Constants
- * (represent the first 32 bits of the fractional parts of the
- * cube roots of the first sixty-four prime numbers)
- */
- static final int K[] = {
- 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
- 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
- 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
- 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
- 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
- 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
- 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
- };
-
- public Memoable copy()
- {
- return new SHA224Digest(this);
- }
-
- public void reset(Memoable other)
- {
- SHA224Digest d = (SHA224Digest)other;
-
- doCopy(d);
- }
-
- public byte[] getEncodedState()
- {
- byte[] state = new byte[52 + xOff * 4];
-
- super.populateState(state);
-
- Pack.intToBigEndian(H1, state, 16);
- Pack.intToBigEndian(H2, state, 20);
- Pack.intToBigEndian(H3, state, 24);
- Pack.intToBigEndian(H4, state, 28);
- Pack.intToBigEndian(H5, state, 32);
- Pack.intToBigEndian(H6, state, 36);
- Pack.intToBigEndian(H7, state, 40);
- Pack.intToBigEndian(H8, state, 44);
- Pack.intToBigEndian(xOff, state, 48);
-
- for (int i = 0; i != xOff; i++)
- {
- Pack.intToBigEndian(X[i], state, 52 + (i * 4));
- }
-
- return state;
- }
-}
-
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