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1 | .\" $OpenBSD: X509_check_issued.3,v 1.4 2019/06/06 01:06:59 schwarze Exp $ | ||
2 | .\" OpenSSL 99d63d46 Oct 26 13:56:48 2016 -0400 | ||
3 | .\" | ||
4 | .\" This file was written by Victor B. Wagner <vitus@cryptocom.ru>. | ||
5 | .\" Copyright (c) 2015 The OpenSSL Project. All rights reserved. | ||
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51 | .Dd $Mdocdate: June 6 2019 $ | ||
52 | .Dt X509_CHECK_ISSUED 3 | ||
53 | .Os | ||
54 | .Sh NAME | ||
55 | .Nm X509_check_issued | ||
56 | .Nd check whether a certificate was issued using a given CA certificate | ||
57 | .Sh SYNOPSIS | ||
58 | .In openssl/x509v3.h | ||
59 | .Ft int | ||
60 | .Fo X509_check_issued | ||
61 | .Fa "X509 *issuer" | ||
62 | .Fa "X509 *subject" | ||
63 | .Fc | ||
64 | .Sh DESCRIPTION | ||
65 | This function checks whether the certificate | ||
66 | .Fa subject | ||
67 | was issued using the CA certificate | ||
68 | .Fa issuer . | ||
69 | It does the following checks: | ||
70 | .Bl -bullet | ||
71 | .It | ||
72 | match the issuer field of | ||
73 | .Fa subject | ||
74 | against the subject field of | ||
75 | .Fa issuer | ||
76 | .It | ||
77 | if | ||
78 | .Sy authorityKeyIdentifier | ||
79 | is present in the | ||
80 | .Fa subject | ||
81 | certificate, | ||
82 | compare it to the | ||
83 | .Sy subjectKeyIdentifier | ||
84 | of | ||
85 | .Fa issuer | ||
86 | .It | ||
87 | check the | ||
88 | .Sy keyUsage | ||
89 | field of | ||
90 | .Fa issuer . | ||
91 | .El | ||
92 | .Sh RETURN VALUES | ||
93 | This function returns | ||
94 | .Dv X509_V_OK | ||
95 | if the certificate | ||
96 | .Fa subject | ||
97 | is issued by | ||
98 | .Fa issuer , | ||
99 | or some | ||
100 | .Dv X509_V_ERR* | ||
101 | constant to indicate an error. | ||
102 | .Sh SEE ALSO | ||
103 | .Xr X509_check_ca 3 , | ||
104 | .Xr X509_new 3 , | ||
105 | .Xr X509_verify_cert 3 | ||
106 | .Sh HISTORY | ||
107 | .Fn X509_check_issued | ||
108 | first appeared in OpenSSL 0.9.6 and has been available since | ||
109 | .Ox 2.9 . | ||