109 lines
4.3 KiB
HTML
Executable File
109 lines
4.3 KiB
HTML
Executable File
<?xml version="1.0" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>SCT_validate</title>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<link rev="made" href="mailto:" />
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</head>
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<body>
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<ul id="index">
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<li><a href="#NAME">NAME</a></li>
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<li><a href="#SYNOPSIS">SYNOPSIS</a></li>
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<li><a href="#DESCRIPTION">DESCRIPTION</a></li>
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<li><a href="#NOTES">NOTES</a></li>
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<li><a href="#RETURN-VALUES">RETURN VALUES</a></li>
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<li><a href="#SEE-ALSO">SEE ALSO</a></li>
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<li><a href="#HISTORY">HISTORY</a></li>
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<li><a href="#COPYRIGHT">COPYRIGHT</a></li>
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</ul>
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<h1 id="NAME">NAME</h1>
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<p>SCT_validate, SCT_LIST_validate, SCT_get_validation_status - checks Signed Certificate Timestamps (SCTs) are valid</p>
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<h1 id="SYNOPSIS">SYNOPSIS</h1>
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<pre><code> #include <openssl/ct.h>
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typedef enum {
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SCT_VALIDATION_STATUS_NOT_SET,
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SCT_VALIDATION_STATUS_UNKNOWN_LOG,
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SCT_VALIDATION_STATUS_VALID,
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SCT_VALIDATION_STATUS_INVALID,
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SCT_VALIDATION_STATUS_UNVERIFIED,
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SCT_VALIDATION_STATUS_UNKNOWN_VERSION
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} sct_validation_status_t;
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int SCT_validate(SCT *sct, const CT_POLICY_EVAL_CTX *ctx);
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int SCT_LIST_validate(const STACK_OF(SCT) *scts, CT_POLICY_EVAL_CTX *ctx);
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sct_validation_status_t SCT_get_validation_status(const SCT *sct);</code></pre>
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<h1 id="DESCRIPTION">DESCRIPTION</h1>
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<p>SCT_validate() will check that an SCT is valid and verify its signature. SCT_LIST_validate() performs the same checks on an entire stack of SCTs. The result of the validation checks can be obtained by passing the SCT to SCT_get_validation_status().</p>
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<p>A CT_POLICY_EVAL_CTX must be provided that specifies:</p>
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<ul>
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<li><p>The certificate the SCT was issued for.</p>
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<p>Failure to provide the certificate will result in the validation status being SCT_VALIDATION_STATUS_UNVERIFIED.</p>
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</li>
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<li><p>The issuer of that certificate.</p>
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<p>This is only required if the SCT was issued for a pre-certificate (see RFC 6962). If it is required but not provided, the validation status will be SCT_VALIDATION_STATUS_UNVERIFIED.</p>
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</li>
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<li><p>A CTLOG_STORE that contains the CT log that issued this SCT.</p>
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<p>If the SCT was issued by a log that is not in this CTLOG_STORE, the validation status will be SCT_VALIDATION_STATUS_UNKNOWN_LOG.</p>
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</li>
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</ul>
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<p>If the SCT is of an unsupported version (only v1 is currently supported), the validation status will be SCT_VALIDATION_STATUS_UNKNOWN_VERSION.</p>
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<p>If the SCT's signature is incorrect, its timestamp is in the future (relative to the time in CT_POLICY_EVAL_CTX), or if it is otherwise invalid, the validation status will be SCT_VALIDATION_STATUS_INVALID.</p>
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<p>If all checks pass, the validation status will be SCT_VALIDATION_STATUS_VALID.</p>
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<h1 id="NOTES">NOTES</h1>
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<p>A return value of 0 from SCT_LIST_validate() should not be interpreted as a failure. At a minimum, only one valid SCT may provide sufficient confidence that a certificate has been publicly logged.</p>
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<h1 id="RETURN-VALUES">RETURN VALUES</h1>
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<p>SCT_validate() returns a negative integer if an internal error occurs, 0 if the SCT fails validation, or 1 if the SCT passes validation.</p>
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<p>SCT_LIST_validate() returns a negative integer if an internal error occurs, 0 if any of SCTs fails validation, or 1 if they all pass validation.</p>
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<p>SCT_get_validation_status() returns the validation status of the SCT. If SCT_validate() or SCT_LIST_validate() have not been passed that SCT, the returned value will be SCT_VALIDATION_STATUS_NOT_SET.</p>
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<h1 id="SEE-ALSO">SEE ALSO</h1>
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<p><a href="../man7/ct.html">ct(7)</a></p>
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<h1 id="HISTORY">HISTORY</h1>
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<p>These functions were added in OpenSSL 1.1.0.</p>
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<h1 id="COPYRIGHT">COPYRIGHT</h1>
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<p>Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.</p>
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<p>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 <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
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</body>
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</html>
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