wchevreuil commented on a change in pull request #2539:
URL: https://github.com/apache/hbase/pull/2539#discussion_r504548093
##########
File path:
hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/Encryption.java
##########
@@ -127,96 +128,48 @@ public static Cipher getCipher(Configuration conf, String
name) {
}
/**
- * Return the MD5 digest of the concatenation of the supplied arguments.
- */
- public static byte[] hash128(String... args) {
- byte[] result = new byte[16];
- try {
- MessageDigest md = MessageDigest.getInstance("MD5");
- for (String arg: args) {
- md.update(Bytes.toBytes(arg));
- }
- md.digest(result, 0, result.length);
- return result;
- } catch (NoSuchAlgorithmException e) {
- throw new RuntimeException(e);
- } catch (DigestException e) {
- throw new RuntimeException(e);
- }
- }
-
- /**
- * Return the MD5 digest of the concatenation of the supplied arguments.
- */
- public static byte[] hash128(byte[]... args) {
- byte[] result = new byte[16];
- try {
- MessageDigest md = MessageDigest.getInstance("MD5");
- for (byte[] arg: args) {
- md.update(arg);
- }
- md.digest(result, 0, result.length);
- return result;
- } catch (NoSuchAlgorithmException e) {
- throw new RuntimeException(e);
- } catch (DigestException e) {
- throw new RuntimeException(e);
- }
- }
-
- /**
- * Return the SHA-256 digest of the concatenation of the supplied arguments.
+ * Returns the Hash Algorithm defined in the crypto configuration.
*/
- public static byte[] hash256(String... args) {
- byte[] result = new byte[32];
- try {
- MessageDigest md = MessageDigest.getInstance("SHA-256");
- for (String arg: args) {
- md.update(Bytes.toBytes(arg));
- }
- md.digest(result, 0, result.length);
- return result;
- } catch (NoSuchAlgorithmException e) {
- throw new RuntimeException(e);
- } catch (DigestException e) {
- throw new RuntimeException(e);
- }
+ public static String getConfiguredHashAlgorithm(Configuration conf) {
+ return conf.get(HConstants.CRYPTO_KEY_HASH_ALGORITHM_CONF_KEY,
+ HConstants.CRYPTO_KEY_HASH_ALGORITHM_CONF_DEFAULT).trim();
}
/**
- * Return the SHA-256 digest of the concatenation of the supplied arguments.
+ * Returns the hash of the supplied argument, using the hash algorithm
+ * specified in the given config.
*/
- public static byte[] hash256(byte[]... args) {
- byte[] result = new byte[32];
+ public static byte[] computeHash(Configuration conf, byte[] arg) {
Review comment:
> I'm not sure about deprecation. If these are used outside of the scope
of HFile / WALFile encryption by other projects, then we can even keep them in
the long term.
If you feel those could/should be removed, it's fine to do so, but to be in
line with our [compatibility
promises](https://hbase.apache.org/book.html#hbase.versioning) (see "Client API
compatibility" bullet), we need to deprecate those for a whole major release,
before removing them.
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