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All of the release distribution packages have been digitally
signed (using PGP or GPG) by the ASF committers that constructed
There will be an accompanying distribution.asc file in the same directory as the distribution.
The PGP/GPG keys can be found at the MIT key repository and within this project's KEYS file at https://www.apache.org/dist/commons/KEYS
Always use the signature to validate package authenticity, e.g., $ pgpk -a KEYS $ pgpv commons-logging-1.2-bin.tar.gz.asc or, $ pgp -ka KEYS $ pgp commons-logging-1.2-bin.tar.gz.asc or $ gpg --import KEYS $ gpg --verify commons-logging-1.2-bin.tar.gz.asc commons-logging-1.2-bin.tar.gz
See also Verifying Apache Software Foundation Releases
We also offer MD5/SHA hashes as an alternative to validate the
integrity of the downloaded files. See the
Note that such hashes are only useful as a check that the file has been downloaded OK. They do not provide any guarantee that the downloaded file is authentic.