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https://issues.apache.org/jira/browse/TIKA-2857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16823134#comment-16823134
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Chinh Nguyen commented on TIKA-2857:
------------------------------------
According to the folks at BC:
{quote}These all parse correctly with BC. Looking at the stack trace it looks
like the streaming API is being used - it would be worth checking that it is
being used correctly - as it's streaming you only get one shot at the data, and
failure to read objects out of the stream that may be optional will result in
the next step in the parsing failing.{quote}
> Cannot parse PKCS7 files
> ------------------------
>
> Key: TIKA-2857
> URL: https://issues.apache.org/jira/browse/TIKA-2857
> Project: Tika
> Issue Type: Bug
> Components: parser
> Affects Versions: 1.20
> Reporter: Chinh Nguyen
> Priority: Major
> Attachments: cert.p7, digest.p7, sign.p7, tika.xml
>
>
> I cannot get tika to parse any PKCS7 files. All seem to generate Java
> exceptions:
> * Create a "cert-only" file: {{openssl crl2pkcs7 -nocrl -certfile
> /usr/share/ca-certificates/mozilla/Entrust_Root_Certification_Authority.crt
> -out cert.p7 -outform der}}
> * Create a signed file: {{echo "hello world" | openssl cms -sign -inkey
> key.pem -signer cert.pem -md sha256 -outform der -nodetach -out sign.p7}}
> * Create a digest file: {{echo "hello world" | openssl cms -digest_create -md
> sha256 -outform der -out digest.p7}}
> Try to parse these files:
> {quote}java -jar tika-app-1.20.jar cert.p7
> Exception in thread "main" org.apache.tika.exception.TikaException: cannot
> parse detached pkcs7 signature (no signed data to parse)
> at org.apache.tika.parser.crypto.Pkcs7Parser.parse(Pkcs7Parser.java:81)
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> at
> org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:143)
> at org.apache.tika.cli.TikaCLI$OutputType.process(TikaCLI.java:209)
> at org.apache.tika.cli.TikaCLI.process(TikaCLI.java:496)
> at org.apache.tika.cli.TikaCLI.main(TikaCLI.java:149){quote}
> {quote}java -jar tika-app-1.20.jar sign.p7
> Exception in thread "main" org.apache.tika.exception.TikaException:
> TIKA\-198: Illegal IOException from
> org.apache.tika.parser.crypto.Pkcs7Parser@76a4d6c
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:286)
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> at
> org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:143){quote}
> {quote}java -jar tika-app-1.20.jar --config=tika.xml digest.p7
> Exception in thread "main" org.apache.tika.exception.TikaException:
> Unexpected RuntimeException from
> org.apache.tika.parser.ParserDecorator$1@5dfcfece
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:282)
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> at
> org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:143)
> at org.apache.tika.cli.TikaCLI$OutputType.process(TikaCLI.java:209)
> at org.apache.tika.cli.TikaCLI.process(TikaCLI.java:496)
> at org.apache.tika.cli.TikaCLI.main(TikaCLI.java:149)
> Caused by: java.lang.ClassCastException:
> org.bouncycastle.asn1.DERSequenceParser cannot be cast to
> org.bouncycastle.asn1.ASN1SetParser
> at
> org.bouncycastle.asn1.cms.SignedDataParser.getDigestAlgorithms(Unknown
> Source){quote}
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