Possible bug in org.bouncycastle.cms.CMSSignedData when byte array is padded with zeros in version 1.85

[dagframstad]

org.bouncycastle.cms.CMSSignedData(contents) fails with:

IOException reading content.
org.bouncycastle.cms.CMSException: IOException reading content.
	at org.bouncycastle.cms.CMSUtils.readContentInfo(Unknown Source)
	at org.bouncycastle.cms.CMSSignedData.<init>(Unknown Source)
	at BouncyCastle185RegressionTest.PDF signature contains padded CMS(BouncyCastle185RegressionTest.kt:33)
Caused by: java.io.IOException: Extra data detected in stream
	at org.bouncycastle.asn1.ASN1Primitive.fromByteArray(Unknown Source)
	... 3 more

in BouncyCastle 1.85 if contents is padded with extra data (zeros). This worked in BouncyCastle 1.84
I'm not sure if this was intentional or not.
Code attached.

CMSSignedDataIssue.tar.gz

[dghgit]

It's intentional. Wrap the data in an input stream - it will read the object correctly then without the expectation that the data passed constitutes just the valid signature.

[dagframstad]

Thank you, worked like a charm.