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8214074: Ghash optimization using AVX instructions

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Reviewed-by: kvn, ascarpino
This commit is contained in:
Smita Kamath 2018-12-12 12:17:33 -08:00 • committed by Anthony Scarpino
parent 0e86ce5715
commit 3623c99b27
8 changed files with 426 additions and 15 deletions
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20
src/java.base/share/classes/com/sun/crypto/provider/GHASH.java
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@ -124,10 +124,10 @@ final class GHASH {
}
/* subkeyH and state are stored in long[] for GHASH intrinsic use */
/* subkeyHtbl and state are stored in long[] for GHASH intrinsic use */
// hash subkey H; should not change after the object has been constructed
private final long[] subkeyH;
// hashtable subkeyHtbl; holds 2*9 powers of subkeyH computed using carry-less multiplication
private long[] subkeyHtbl;
// buffer for storing hash
private final long[] state;
@ -149,9 +149,9 @@ final class GHASH {
throw new ProviderException("Internal error");
}
state = new long[2];
this.subkeyH = new long[2];
this.subkeyH[0] = getLong(subkeyH, 0);
this.subkeyH[1] = getLong(subkeyH, 8);
subkeyHtbl = new long[2*9];
subkeyHtbl[0] = getLong(subkeyH, 0);
subkeyHtbl[1] = getLong(subkeyH, 8);
}
/**
@ -194,8 +194,8 @@ final class GHASH {
if (inLen == 0) {
return;
}
ghashRangeCheck(in, inOfs, inLen, state, subkeyH);
processBlocks(in, inOfs, inLen/AES_BLOCK_SIZE, state, subkeyH);
ghashRangeCheck(in, inOfs, inLen, state, subkeyHtbl);
processBlocks(in, inOfs, inLen/AES_BLOCK_SIZE, state, subkeyHtbl);
}
private static void ghashRangeCheck(byte[] in, int inOfs, int inLen, long[] st, long[] subH) {
@ -219,8 +219,8 @@ final class GHASH {
throw new RuntimeException("internal state has invalid length: " +
st.length);
}
if (subH.length != 2) {
throw new RuntimeException("internal subkeyH has invalid length: " +
if (subH.length != 18) {
throw new RuntimeException("internal subkeyHtbl has invalid length: " +
subH.length);
}
}