seanjmullan commented on code in PR #271:
URL:
https://github.com/apache/santuario-xml-security-java/pull/271#discussion_r1576208433
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src/main/java/org/apache/xml/security/encryption/XMLCipherUtil.java:
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@@ -140,7 +140,7 @@ public static OAEPParameterSpec constructOAEPParameters(
public static MGF1ParameterSpec constructMGF1Parameter(String
mgh1AlgorithmURI) {
LOG.log(Level.DEBUG, "Creating MGF1ParameterSpec for [{0}]",
mgh1AlgorithmURI);
if (mgh1AlgorithmURI == null || mgh1AlgorithmURI.isEmpty()) {
- LOG.log(Level.WARNING,"MGF1 algorithm URI is null or empty. Using
SHA-1 as default.");
+ LOG.log(Level.WARNING, "MGF1 algorithm URI is null or empty. Using
SHA-1 as default.");
Review Comment:
I think the XML Encryption recommendation made a mistake to allow defaults
for algorithms, but I don't think we need to necessarily adhere to that. That
said, this could introduce interop issues if we treat a missing DigestMethod as
SHA-256 instead of SHA-1. Instead, we could require the application to always
specify the MGF digest method and no longer allow null to be passed in as the
parameter.
This may be best handled as a separate issue so that all APIs which have
defaults are checked - for example, RSA-OAEP also defaults to SHA-1 for the
digest algorithm.
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