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https://issues.apache.org/jira/browse/NIFI-10929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17680000#comment-17680000
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Chris Sampson commented on NIFI-10929:
--------------------------------------
Possibly related to [~exceptionfactory]'s comments on NIFI-10932 RE NiFi's
change in use of Bouncy Castle (but that could be a red herring).
> NiFi generated certificates (e.g. Single User, or nifi-toolkit) are not
> compatible with OpenSSL 3.x+
> ----------------------------------------------------------------------------------------------------
>
> Key: NIFI-10929
> URL: https://issues.apache.org/jira/browse/NIFI-10929
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 1.19.0, 1.19.1
> Reporter: Chris Sampson
> Priority: Major
>
> The certificates (keystore, truststore) generated by NiFi are not compatible
> with OpenSSL 3+ because they are created using old/insecure algorithms.
> When starting NiFi 1.19.0 (using the {{apache/nifi}} Docker image) and
> confguring a single-user auth, which is the default for NiFi, the generated
> {{truststore.p12}} and {{keystore.p12}} cannot be decrypted (e.g. to extract
> the public cert/private key into PEM format files so they can be used with
> {{curl}}) using the OpenSSL version present within the Docker Image.
> {quote}
> OpenSSL 3.0.2 15 Mar 2022 (Library: OpenSSL 3.0.2 15 Mar 2022)
> {quote}
> Attempted command:
> {code:bash}
> openssl pkcs12 -in "truststore.p12" -out "nifi-cert.pem" -cacerts -nokeys
> -password "pass:${TRUSTSTORE_PASSWORD}"
> {code}
> Error:
> {quote}
> 4047C0AF997F0000:error:0308010C:digital envelope
> routines:inner_evp_generic_fetch:unsupported:../crypto/evp/evp_fetch.c:349:Global
> default library context, Algorithm (RC2-40-CBC : 0), Properties ()
> {quote}
> This can be worked around by adding the {{-legacy}} flag to the {{openssl}}
> command (see [this Stack Overflow
> answer|https://stackoverflow.com/a/72600724]).
> Using the command suggested from the linked article, we see that the NiFi
> generated truststure uses:
> {quote}
> PKCS7 Encrypted data: pbeWithSHA1And40BitRC2-CBC, Iteration 51200
> {quote}
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