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* Data Structures: More caching improvements, don't cache where we shouldn't

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zzz
2011-01-09 01:04:06 +00:00
parent 9a63be8f69
commit fd4e4fbc64
3 changed files with 51 additions and 12 deletions
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11
core/java/src/net/i2p/crypto/SHA256Generator.java
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@@ -23,13 +23,18 @@ public final class SHA256Generator {
return I2PAppContext.getGlobalContext().sha();
}
/** Calculate the SHA-256 has of the source
/**
* Calculate the SHA-256 hash of the source and cache the result.
* @param source what to hash
* @return hash of the source
*/
public final Hash calculateHash(byte[] source) {
return calculateHash(source, 0, source.length);
}
/**
* Calculate the hash and cache the result.
*/
public final Hash calculateHash(byte[] source, int start, int len) {
Sha256Standalone digest = acquireGnu();
digest.update(source, start, len);
@@ -39,6 +44,10 @@ public final class SHA256Generator {
return Hash.create(rv);
}
/**
* Use this if you only need the data, not a Hash object.
* Does not cache.
*/
public final void calculateHash(byte[] source, int start, int len, byte out[], int outOffset) {
Sha256Standalone digest = acquireGnu();
digest.update(source, start, len);