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b425001010
Many of the new types introduced by OpenSSL 3.0 have an OSSL_ prefix, e.g., OSSL_CALLBACK, OSSL_PARAM, OSSL_ALGORITHM, OSSL_SERIALIZER. The OPENSSL_CTX type stands out a little by using a different prefix. For consistency reasons, this type is renamed to OSSL_LIB_CTX. Reviewed-by: Paul Dale <paul.dale@oracle.com> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/12621)
83 lines
2.5 KiB
Plaintext
83 lines
2.5 KiB
Plaintext
=pod
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=head1 NAME
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X509_verify, X509_self_signed,
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X509_REQ_verify_ex, X509_REQ_verify,
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X509_CRL_verify -
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verify certificate, certificate request, or CRL signature
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=head1 SYNOPSIS
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#include <openssl/x509.h>
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int X509_verify(X509 *x, EVP_PKEY *pkey);
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int X509_self_signed(X509 *cert, int verify_signature);
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int X509_REQ_verify_ex(X509_REQ *a, EVP_PKEY *pkey, OSSL_LIB_CTX *libctx,
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const char *propq);
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int X509_REQ_verify(X509_REQ *a, EVP_PKEY *r);
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int X509_CRL_verify(X509_CRL *a, EVP_PKEY *r);
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=head1 DESCRIPTION
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X509_verify() verifies the signature of certificate I<x> using public key
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I<pkey>. Only the signature is checked: no other checks (such as certificate
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chain validity) are performed.
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X509_self_signed() checks whether a certificate is self-signed.
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For success the issuer and subject names must match, the components of the
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authority key identifier (if present) must match the subject key identifier etc.
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The signature itself is actually verified only if B<verify_signature> is 1, as
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for explicitly trusted certificates this verification is not worth the effort.
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X509_REQ_verify_ex(), X509_REQ_verify() and X509_CRL_verify()
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verify the signatures of certificate requests and CRLs, respectively.
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=head1 RETURN VALUES
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X509_verify(),
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X509_REQ_verify_ex(), X509_REQ_verify() and X509_CRL_verify()
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return 1 if the signature is valid and 0 if the signature check fails.
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If the signature could not be checked at all because it was ill-formed
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or some other error occurred then -1 is returned.
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X509_self_signed() returns the same values but also returns 1
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if all respective fields match and B<verify_signature> is 0.
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=head1 SEE ALSO
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L<d2i_X509(3)>,
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L<ERR_get_error(3)>,
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L<X509_CRL_get0_by_serial(3)>,
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L<X509_get0_signature(3)>,
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L<X509_get_ext_d2i(3)>,
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L<X509_get_extension_flags(3)>,
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L<X509_get_pubkey(3)>,
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L<X509_get_subject_name(3)>,
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L<X509_get_version(3)>,
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L<X509_NAME_ENTRY_get_object(3)>,
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L<X509_NAME_get_index_by_NID(3)>,
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L<X509_NAME_print_ex(3)>,
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L<X509V3_get_d2i(3)>,
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L<X509_verify_cert(3)>,
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L<OSSL_LIB_CTX(3)>
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=head1 HISTORY
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The X509_verify(), X509_REQ_verify(), and X509_CRL_verify()
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functions are available in all versions of OpenSSL.
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X509_REQ_verify_ex(), and X509_self_signed() were added in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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