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8344144: AES/CBC slow at big payloads

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Reviewed-by: sviswanathan, abarashev, ascarpino
This commit is contained in:
Volodymyr Paprotski 2024-11-21 19:17:57 +00:00 • committed by Anthony Scarpino
parent 93d4ad4dd4
commit d6b40d3033
2 changed files with 51 additions and 5 deletions
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32
src/java.base/share/classes/com/sun/crypto/provider/CipherBlockChaining.java
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@ -59,10 +59,15 @@ class CipherBlockChaining extends FeedbackCipher {
// variables for save/restore calls
private byte[] rSave = null;
// chunkSize is a multiple of block size and used to divide up
// input data to trigger the intrinsic.
private final int chunkSize;
CipherBlockChaining(SymmetricCipher embeddedCipher) {
super(embeddedCipher);
k = new byte[blockSize];
r = new byte[blockSize];
chunkSize = blockSize * 6400;
}
/**
@ -148,8 +153,18 @@ class CipherBlockChaining extends FeedbackCipher {
ArrayUtil.blockSizeCheck(plainLen, blockSize);
ArrayUtil.nullAndBoundsCheck(plain, plainOffset, plainLen);
ArrayUtil.nullAndBoundsCheck(cipher, cipherOffset, plainLen);
return implEncrypt(plain, plainOffset, plainLen,
cipher, cipherOffset);
int processed = 0;
for (; plainLen > chunkSize; cipherOffset += chunkSize,
plainOffset += chunkSize, plainLen -= chunkSize) {
processed +=
implEncrypt(plain, plainOffset, chunkSize, cipher, cipherOffset);
}
// note: above loop always leaves some data to process (more than zero,
// less than or equal to chunkSize) so this last call can be
// unconditional
processed +=
implEncrypt(plain, plainOffset, plainLen, cipher, cipherOffset);
return processed;
}
@IntrinsicCandidate
@ -199,7 +214,18 @@ class CipherBlockChaining extends FeedbackCipher {
ArrayUtil.blockSizeCheck(cipherLen, blockSize);
ArrayUtil.nullAndBoundsCheck(cipher, cipherOffset, cipherLen);
ArrayUtil.nullAndBoundsCheck(plain, plainOffset, cipherLen);
return implDecrypt(cipher, cipherOffset, cipherLen, plain, plainOffset);
int processed = 0;
for (; cipherLen > chunkSize; cipherOffset += chunkSize,
plainOffset += chunkSize, cipherLen -= chunkSize) {
processed +=
implDecrypt(cipher, cipherOffset, chunkSize, plain, plainOffset);
}
// note: above loop always leaves some data to process (more than zero,
// less than or equal to chunkSize) so this last call can be
// unconditional
processed +=
implDecrypt(cipher, cipherOffset, cipherLen, plain, plainOffset);
return processed;
}
@IntrinsicCandidate