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NBSVTOOL(1) General Commands Manual NBSVTOOL(1) NAME nbsvtool - create and verify detached signatures of files SYNOPSIS nbsvtool [-v] [-a anchor-certificates] [-c certificate-chain] [-f certificate-file] [-k private-key-file] [-u required-key-usage] command args ... DESCRIPTION nbsvtool is used to create and verify detached X509 signatures of files. Private keys and certificates are expected to be PEM encoded, signatures are in PEM/SMIME format. Supported commands: sign file Sign file, placing the signature in file.sp7. The options -f and -k are required for this command. verify file [signature] Verify signature for file. If signature is not specified, file.sp7 is used. verify-code file [signature] This is a short cut for verify with the option -u code. Supported options: -a anchor-certificates A file containing one or more (concatenated) keys that are considered trusted. -c certificate-chain A file containing additional certificates that will be added to the signature when creating one. They will be used to fill missing links in the trust chain when verifying the signature. -f certificate-file A file containing the certificate to use for signing. The certificate must match the key given by -k. -k private-key-file A file containing the private key to use for signing. -u required-key-usage Verify that the extended key-usage attribute in the signing certificate matches required-key-usage. Otherwise, the signature is rejected. key usage can be one of: "ssl-server", "ssl-client", "code", or "smime". -v Print verbose information about the signing certificate. EXIT STATUS The nbsvtool utility exits 0 on success, and >0 if an error occurs. EXAMPLES Create signature file hello.sp7 for file hello. The private key is found in file key, the matching certificate is in cert, additional certificates from cert-chain are included in the created signature. nbsvtool -k key -f cert -c cert-chain sign hello hello.sp7 Verify that the signature hello.sp7 is valid for file hello and that the signing certificate allows code signing. Certificates in anchor-file are considered trusted, and there must be a certificate chain from one of those certificates to the signing certificate. nbsvtool -a anchor-file verify-code hello hello.sp7 SEE ALSO openssl_smime(1) CAVEATS As there is currently no default trust anchor, you must explicilty specify one with -a, otherwise no verification can succeed. NetBSD 8.0 March 11, 2009 NetBSD 8.0