mirror of
https://github.com/openssl/openssl.git
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63b64f19c1
Also constify related CMS/PKCS7 functions and improve error codes thrown. Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/14503)
653 lines
20 KiB
Plaintext
653 lines
20 KiB
Plaintext
=pod
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{- OpenSSL::safe::output_do_not_edit_headers(); -}
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=head1 NAME
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openssl-ts - Time Stamping Authority command
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=head1 SYNOPSIS
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B<openssl> B<ts>
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B<-help>
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B<openssl> B<ts>
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B<-query>
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[B<-config> I<configfile>]
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[B<-data> I<file_to_hash>]
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[B<-digest> I<digest_bytes>]
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[B<-I<digest>>]
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[B<-tspolicy> I<object_id>]
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[B<-no_nonce>]
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[B<-cert>]
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[B<-in> I<request.tsq>]
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[B<-out> I<request.tsq>]
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[B<-text>]
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{- $OpenSSL::safe::opt_r_synopsis -}
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{- $OpenSSL::safe::opt_provider_synopsis -}
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B<openssl> B<ts>
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B<-reply>
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[B<-config> I<configfile>]
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[B<-section> I<tsa_section>]
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[B<-queryfile> I<request.tsq>]
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[B<-passin> I<password_src>]
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[B<-signer> I<tsa_cert.pem>]
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[B<-inkey> I<filename>|I<uri>]
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[B<-I<digest>>]
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[B<-chain> I<certs_file.pem>]
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[B<-tspolicy> I<object_id>]
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[B<-in> I<response.tsr>]
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[B<-token_in>]
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[B<-out> I<response.tsr>]
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[B<-token_out>]
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[B<-text>]
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{- $OpenSSL::safe::opt_engine_synopsis -}{- $OpenSSL::safe::opt_provider_synopsis -}
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B<openssl> B<ts>
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B<-verify>
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[B<-data> I<file_to_hash>]
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[B<-digest> I<digest_bytes>]
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[B<-queryfile> I<request.tsq>]
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[B<-in> I<response.tsr>]
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[B<-token_in>]
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[B<-untrusted> I<files>|I<uris>]
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[B<-CAfile> I<file>]
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[B<-CApath> I<dir>]
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[B<-CAstore> I<uri>]
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{- $OpenSSL::safe::opt_v_synopsis -}
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{- $OpenSSL::safe::opt_provider_synopsis -}
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=for openssl ifdef engine
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=head1 DESCRIPTION
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This command is a basic Time Stamping Authority (TSA) client and
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server application as specified in RFC 3161 (Time-Stamp Protocol, TSP). A
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TSA can be part of a PKI deployment and its role is to provide long
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term proof of the existence of a certain datum before a particular
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time. Here is a brief description of the protocol:
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=over 4
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=item 1.
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The TSA client computes a one-way hash value for a data file and sends
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the hash to the TSA.
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=item 2.
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The TSA attaches the current date and time to the received hash value,
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signs them and sends the timestamp token back to the client. By
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creating this token the TSA certifies the existence of the original
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data file at the time of response generation.
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=item 3.
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The TSA client receives the timestamp token and verifies the
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signature on it. It also checks if the token contains the same hash
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value that it had sent to the TSA.
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=back
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There is one DER encoded protocol data unit defined for transporting a
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timestamp request to the TSA and one for sending the timestamp response
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back to the client. This command has three main functions:
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creating a timestamp request based on a data file,
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creating a timestamp response based on a request, verifying if a
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response corresponds to a particular request or a data file.
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There is no support for sending the requests/responses automatically
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over HTTP or TCP yet as suggested in RFC 3161. The users must send the
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requests either by ftp or e-mail.
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=head1 OPTIONS
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=over 4
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=item B<-help>
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Print out a usage message.
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=back
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=head2 Timestamp Request generation
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The B<-query> switch can be used for creating and printing a timestamp
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request with the following options:
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=over 4
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=item B<-config> I<configfile>
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The configuration file to use.
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Optional; for a description of the default value,
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see L<openssl(1)/COMMAND SUMMARY>.
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=item B<-data> I<file_to_hash>
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The data file for which the timestamp request needs to be
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created. stdin is the default if neither the B<-data> nor the B<-digest>
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parameter is specified. (Optional)
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=item B<-digest> I<digest_bytes>
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It is possible to specify the message imprint explicitly without the data
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file. The imprint must be specified in a hexadecimal format, two characters
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per byte, the bytes optionally separated by colons (e.g. 1A:F6:01:... or
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1AF601...). The number of bytes must match the message digest algorithm
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in use. (Optional)
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=item B<-I<digest>>
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The message digest to apply to the data file.
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Any digest supported by the L<openssl-dgst(1)> command can be used.
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The default is SHA-256. (Optional)
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=item B<-tspolicy> I<object_id>
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The policy that the client expects the TSA to use for creating the
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timestamp token. Either the dotted OID notation or OID names defined
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in the config file can be used. If no policy is requested the TSA will
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use its own default policy. (Optional)
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=item B<-no_nonce>
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No nonce is specified in the request if this option is
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given. Otherwise a 64 bit long pseudo-random none is
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included in the request. It is recommended to use nonce to
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protect against replay-attacks. (Optional)
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=item B<-cert>
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The TSA is expected to include its signing certificate in the
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response. (Optional)
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=item B<-in> I<request.tsq>
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This option specifies a previously created timestamp request in DER
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format that will be printed into the output file. Useful when you need
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to examine the content of a request in human-readable
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format. (Optional)
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=item B<-out> I<request.tsq>
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Name of the output file to which the request will be written. Default
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is stdout. (Optional)
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=item B<-text>
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If this option is specified the output is human-readable text format
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instead of DER. (Optional)
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{- $OpenSSL::safe::opt_r_item -}
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=back
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=head2 Timestamp Response generation
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A timestamp response (TimeStampResp) consists of a response status
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and the timestamp token itself (ContentInfo), if the token generation was
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successful. The B<-reply> command is for creating a timestamp
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response or timestamp token based on a request and printing the
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response/token in human-readable format. If B<-token_out> is not
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specified the output is always a timestamp response (TimeStampResp),
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otherwise it is a timestamp token (ContentInfo).
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=over 4
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=item B<-config> I<configfile>
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The configuration file to use.
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Optional; for a description of the default value,
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see L<openssl(1)/COMMAND SUMMARY>.
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See L</CONFIGURATION FILE OPTIONS> for configurable variables.
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=item B<-section> I<tsa_section>
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The name of the config file section containing the settings for the
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response generation. If not specified the default TSA section is
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used, see L</CONFIGURATION FILE OPTIONS> for details. (Optional)
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=item B<-queryfile> I<request.tsq>
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The name of the file containing a DER encoded timestamp request. (Optional)
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=item B<-passin> I<password_src>
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Specifies the password source for the private key of the TSA. See
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description in L<openssl(1)>. (Optional)
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=item B<-signer> I<tsa_cert.pem>
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The signer certificate of the TSA in PEM format. The TSA signing
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certificate must have exactly one extended key usage assigned to it:
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timeStamping. The extended key usage must also be critical, otherwise
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the certificate is going to be refused. Overrides the B<signer_cert>
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variable of the config file. (Optional)
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=item B<-inkey> I<filename>|I<uri>
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The signer private key of the TSA in PEM format. Overrides the
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B<signer_key> config file option. (Optional)
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=item B<-I<digest>>
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Signing digest to use. Overrides the B<signer_digest> config file
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option. (Mandatory unless specified in the config file)
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=item B<-chain> I<certs_file.pem>
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The collection of certificates in PEM format that will all
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be included in the response in addition to the signer certificate if
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the B<-cert> option was used for the request. This file is supposed to
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contain the certificate chain for the signer certificate from its
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issuer upwards. The B<-reply> command does not build a certificate
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chain automatically. (Optional)
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=item B<-tspolicy> I<object_id>
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The default policy to use for the response unless the client
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explicitly requires a particular TSA policy. The OID can be specified
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either in dotted notation or with its name. Overrides the
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B<default_policy> config file option. (Optional)
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=item B<-in> I<response.tsr>
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Specifies a previously created timestamp response or timestamp token
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(if B<-token_in> is also specified) in DER format that will be written
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to the output file. This option does not require a request, it is
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useful e.g. when you need to examine the content of a response or
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token or you want to extract the timestamp token from a response. If
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the input is a token and the output is a timestamp response a default
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'granted' status info is added to the token. (Optional)
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=item B<-token_in>
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This flag can be used together with the B<-in> option and indicates
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that the input is a DER encoded timestamp token (ContentInfo) instead
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of a timestamp response (TimeStampResp). (Optional)
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=item B<-out> I<response.tsr>
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The response is written to this file. The format and content of the
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file depends on other options (see B<-text>, B<-token_out>). The default is
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stdout. (Optional)
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=item B<-token_out>
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The output is a timestamp token (ContentInfo) instead of timestamp
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response (TimeStampResp). (Optional)
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=item B<-text>
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If this option is specified the output is human-readable text format
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instead of DER. (Optional)
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{- $OpenSSL::safe::opt_engine_item -}
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{- $OpenSSL::safe::opt_provider_item -}
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=back
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=head2 Timestamp Response verification
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The B<-verify> command is for verifying if a timestamp response or
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timestamp token is valid and matches a particular timestamp request or
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data file. The B<-verify> command does not use the configuration file.
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=over 4
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=item B<-data> I<file_to_hash>
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The response or token must be verified against file_to_hash. The file
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is hashed with the message digest algorithm specified in the token.
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The B<-digest> and B<-queryfile> options must not be specified with this one.
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(Optional)
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=item B<-digest> I<digest_bytes>
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The response or token must be verified against the message digest specified
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with this option. The number of bytes must match the message digest algorithm
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specified in the token. The B<-data> and B<-queryfile> options must not be
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specified with this one. (Optional)
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=item B<-queryfile> I<request.tsq>
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The original timestamp request in DER format. The B<-data> and B<-digest>
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options must not be specified with this one. (Optional)
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=item B<-in> I<response.tsr>
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The timestamp response that needs to be verified in DER format. (Mandatory)
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=item B<-token_in>
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This flag can be used together with the B<-in> option and indicates
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that the input is a DER encoded timestamp token (ContentInfo) instead
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of a timestamp response (TimeStampResp). (Optional)
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=item B<-untrusted> I<files>|I<uris>
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A set of additional untrusted certificates which may be
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needed when building the certificate chain for the TSA's signing certificate.
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These do not need to contain the TSA signing certificate and intermediate CA
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certificates as far as the response already includes them.
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(Optional)
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Multiple sources may be given, separated by commas and/or whitespace.
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Each file may contain multiple certificates.
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=item B<-CAfile> I<file>, B<-CApath> I<dir>, B<-CAstore> I<uri>
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See L<openssl-verification-options(1)/Trusted Certificate Options> for details.
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At least one of B<-CAfile>, B<-CApath> or B<-CAstore> must be specified.
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{- $OpenSSL::safe::opt_v_item -}
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Any verification errors cause the command to exit.
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=back
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=head1 CONFIGURATION FILE OPTIONS
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The B<-query> and B<-reply> commands make use of a configuration file.
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See L<config(5)>
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for a general description of the syntax of the config file. The
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B<-query> command uses only the symbolic OID names section
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and it can work without it. However, the B<-reply> command needs the
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config file for its operation.
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When there is a command line switch equivalent of a variable the
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switch always overrides the settings in the config file.
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=over 4
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=item B<tsa> section, B<default_tsa>
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This is the main section and it specifies the name of another section
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that contains all the options for the B<-reply> command. This default
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section can be overridden with the B<-section> command line switch. (Optional)
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=item B<oid_file>
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This specifies a file containing additional B<OBJECT IDENTIFIERS>.
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Each line of the file should consist of the numerical form of the
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object identifier followed by whitespace then the short name followed
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by whitespace and finally the long name. (Optional)
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=item B<oid_section>
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This specifies a section in the configuration file containing extra
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object identifiers. Each line should consist of the short name of the
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object identifier followed by B<=> and the numerical form. The short
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and long names are the same when this option is used. (Optional)
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=item B<RANDFILE>
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At startup the specified file is loaded into the random number generator,
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and at exit 256 bytes will be written to it. (Note: Using a RANDFILE is
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not necessary anymore, see the L</HISTORY> section.
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=item B<serial>
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The name of the file containing the hexadecimal serial number of the
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last timestamp response created. This number is incremented by 1 for
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each response. If the file does not exist at the time of response
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generation a new file is created with serial number 1. (Mandatory)
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=item B<crypto_device>
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Specifies the OpenSSL engine that will be set as the default for
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all available algorithms. The default value is built-in, you can specify
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any other engines supported by OpenSSL (e.g. use chil for the NCipher HSM).
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(Optional)
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=item B<signer_cert>
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TSA signing certificate in PEM format. The same as the B<-signer>
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command line option. (Optional)
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=item B<certs>
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A file containing a set of PEM encoded certificates that need to be
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included in the response. The same as the B<-chain> command line
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option. (Optional)
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=item B<signer_key>
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The private key of the TSA in PEM format. The same as the B<-inkey>
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command line option. (Optional)
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=item B<signer_digest>
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Signing digest to use. The same as the
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B<-I<digest>> command line option. (Mandatory unless specified on the command
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line)
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=item B<default_policy>
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The default policy to use when the request does not mandate any
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policy. The same as the B<-tspolicy> command line option. (Optional)
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=item B<other_policies>
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Comma separated list of policies that are also acceptable by the TSA
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and used only if the request explicitly specifies one of them. (Optional)
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=item B<digests>
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The list of message digest algorithms that the TSA accepts. At least
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one algorithm must be specified. (Mandatory)
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=item B<accuracy>
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The accuracy of the time source of the TSA in seconds, milliseconds
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and microseconds. E.g. secs:1, millisecs:500, microsecs:100. If any of
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the components is missing zero is assumed for that field. (Optional)
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=item B<clock_precision_digits>
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Specifies the maximum number of digits, which represent the fraction of
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seconds, that need to be included in the time field. The trailing zeros
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must be removed from the time, so there might actually be fewer digits,
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or no fraction of seconds at all. Supported only on UNIX platforms.
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The maximum value is 6, default is 0.
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(Optional)
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=item B<ordering>
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If this option is yes the responses generated by this TSA can always
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be ordered, even if the time difference between two responses is less
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than the sum of their accuracies. Default is no. (Optional)
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=item B<tsa_name>
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Set this option to yes if the subject name of the TSA must be included in
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the TSA name field of the response. Default is no. (Optional)
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=item B<ess_cert_id_chain>
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The SignedData objects created by the TSA always contain the
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certificate identifier of the signing certificate in a signed
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attribute (see RFC 2634, Enhanced Security Services).
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If this variable is set to no, only this signing certificate identifier
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is included in the SigningCertificate signed attribute.
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If this variable is set to yes and the B<certs> variable or the B<-chain> option
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is specified then the certificate identifiers of the chain will also
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be included, where the B<-chain> option overrides the B<certs> variable.
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Default is no. (Optional)
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=item B<ess_cert_id_alg>
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This option specifies the hash function to be used to calculate the TSA's
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public key certificate identifier. Default is sha256. (Optional)
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=back
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=head1 EXAMPLES
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All the examples below presume that B<OPENSSL_CONF> is set to a proper
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configuration file, e.g. the example configuration file
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F<openssl/apps/openssl.cnf> will do.
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=head2 Timestamp Request
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To create a timestamp request for F<design1.txt> with SHA-256 digest,
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without nonce and policy, and without requirement for a certificate
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in the response:
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openssl ts -query -data design1.txt -no_nonce \
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-out design1.tsq
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To create a similar timestamp request with specifying the message imprint
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explicitly:
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openssl ts -query -digest b7e5d3f93198b38379852f2c04e78d73abdd0f4b \
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-no_nonce -out design1.tsq
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To print the content of the previous request in human readable format:
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openssl ts -query -in design1.tsq -text
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To create a timestamp request which includes the SHA-512 digest
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of F<design2.txt>, requests the signer certificate and nonce, and
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specifies a policy id (assuming the tsa_policy1 name is defined in the
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OID section of the config file):
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openssl ts -query -data design2.txt -sha512 \
|
|
-tspolicy tsa_policy1 -cert -out design2.tsq
|
|
|
|
=head2 Timestamp Response
|
|
|
|
Before generating a response a signing certificate must be created for
|
|
the TSA that contains the B<timeStamping> critical extended key usage extension
|
|
without any other key usage extensions. You can add this line to the
|
|
user certificate section of the config file to generate a proper certificate;
|
|
|
|
extendedKeyUsage = critical,timeStamping
|
|
|
|
See L<openssl-req(1)>, L<openssl-ca(1)>, and L<openssl-x509(1)> for
|
|
instructions. The examples below assume that F<cacert.pem> contains the
|
|
certificate of the CA, F<tsacert.pem> is the signing certificate issued
|
|
by F<cacert.pem> and F<tsakey.pem> is the private key of the TSA.
|
|
|
|
To create a timestamp response for a request:
|
|
|
|
openssl ts -reply -queryfile design1.tsq -inkey tsakey.pem \
|
|
-signer tsacert.pem -out design1.tsr
|
|
|
|
If you want to use the settings in the config file you could just write:
|
|
|
|
openssl ts -reply -queryfile design1.tsq -out design1.tsr
|
|
|
|
To print a timestamp reply to stdout in human readable format:
|
|
|
|
openssl ts -reply -in design1.tsr -text
|
|
|
|
To create a timestamp token instead of timestamp response:
|
|
|
|
openssl ts -reply -queryfile design1.tsq -out design1_token.der -token_out
|
|
|
|
To print a timestamp token to stdout in human readable format:
|
|
|
|
openssl ts -reply -in design1_token.der -token_in -text -token_out
|
|
|
|
To extract the timestamp token from a response:
|
|
|
|
openssl ts -reply -in design1.tsr -out design1_token.der -token_out
|
|
|
|
To add 'granted' status info to a timestamp token thereby creating a
|
|
valid response:
|
|
|
|
openssl ts -reply -in design1_token.der -token_in -out design1.tsr
|
|
|
|
=head2 Timestamp Verification
|
|
|
|
To verify a timestamp reply against a request:
|
|
|
|
openssl ts -verify -queryfile design1.tsq -in design1.tsr \
|
|
-CAfile cacert.pem -untrusted tsacert.pem
|
|
|
|
To verify a timestamp reply that includes the certificate chain:
|
|
|
|
openssl ts -verify -queryfile design2.tsq -in design2.tsr \
|
|
-CAfile cacert.pem
|
|
|
|
To verify a timestamp token against the original data file:
|
|
openssl ts -verify -data design2.txt -in design2.tsr \
|
|
-CAfile cacert.pem
|
|
|
|
To verify a timestamp token against a message imprint:
|
|
openssl ts -verify -digest b7e5d3f93198b38379852f2c04e78d73abdd0f4b \
|
|
-in design2.tsr -CAfile cacert.pem
|
|
|
|
You could also look at the 'test' directory for more examples.
|
|
|
|
=head1 BUGS
|
|
|
|
=for openssl foreign manual procmail(1) perl(1)
|
|
|
|
=over 2
|
|
|
|
=item *
|
|
|
|
No support for timestamps over SMTP, though it is quite easy
|
|
to implement an automatic e-mail based TSA with L<procmail(1)>
|
|
and L<perl(1)>. HTTP server support is provided in the form of
|
|
a separate apache module. HTTP client support is provided by
|
|
L<tsget(1)>. Pure TCP/IP protocol is not supported.
|
|
|
|
=item *
|
|
|
|
The file containing the last serial number of the TSA is not
|
|
locked when being read or written. This is a problem if more than one
|
|
instance of L<openssl(1)> is trying to create a timestamp
|
|
response at the same time. This is not an issue when using the apache
|
|
server module, it does proper locking.
|
|
|
|
=item *
|
|
|
|
Look for the FIXME word in the source files.
|
|
|
|
=item *
|
|
|
|
The source code should really be reviewed by somebody else, too.
|
|
|
|
=item *
|
|
|
|
More testing is needed, I have done only some basic tests (see
|
|
test/testtsa).
|
|
|
|
=back
|
|
|
|
=head1 HISTORY
|
|
|
|
OpenSSL 1.1.1 introduced a new random generator (CSPRNG) with an improved
|
|
seeding mechanism. The new seeding mechanism makes it unnecessary to
|
|
define a RANDFILE for saving and restoring randomness. This option is
|
|
retained mainly for compatibility reasons.
|
|
|
|
The B<-engine> option was deprecated in OpenSSL 3.0.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<openssl(1)>,
|
|
L<tsget(1)>,
|
|
L<openssl-req(1)>,
|
|
L<openssl-x509(1)>,
|
|
L<openssl-ca(1)>,
|
|
L<openssl-genrsa(1)>,
|
|
L<config(5)>,
|
|
L<ossl_store-file(7)>
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file LICENSE in the source distribution or at
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|