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d2i_X509_AUX.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" d2i_X509_AUX, i2d_X509_AUX, i2d_re_X509_tbs, i2d_re_X509_CRL_tbs, i2d_re_X509_REQ_tbs \&\- X509 encode and decode functions .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/x509.h> \& \& X509 *d2i_X509_AUX(X509 **px, const unsigned char **in, long len); \& int i2d_X509_AUX(X509 *x, unsigned char **out); \& int i2d_re_X509_tbs(X509 *x, unsigned char **out); \& int i2d_re_X509_CRL_tbs(X509_CRL *crl, unsigned char **pp); \& int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" The X509 encode and decode routines encode and parse an \&\fBX509\fR structure, which represents an X509 certificate. .PP \&\fBd2i_X509_AUX()\fR is similar to \fBd2i_X509\fR\|(3) but the input is expected to consist of an X509 certificate followed by auxiliary trust information. This is used by the \s-1PEM\s0 routines to read \*(L"\s-1TRUSTED CERTIFICATE\*(R"\s0 objects. This function should not be called on untrusted input. .PP \&\fBi2d_X509_AUX()\fR is similar to \fBi2d_X509\fR\|(3), but the encoded output contains both the certificate and any auxiliary trust information. This is used by the \s-1PEM\s0 routines to write \*(L"\s-1TRUSTED CERTIFICATE\*(R"\s0 objects. Note that this is a non-standard OpenSSL-specific data format. .PP \&\fBi2d_re_X509_tbs()\fR is similar to \fBi2d_X509\fR\|(3) except it encodes only the TBSCertificate portion of the certificate. \fBi2d_re_X509_CRL_tbs()\fR and \fBi2d_re_X509_REQ_tbs()\fR are analogous for \s-1CRL\s0 and certificate request, respectively. The \*(L"re\*(R" in \fBi2d_re_X509_tbs\fR stands for \*(L"re-encode\*(R", and ensures that a fresh encoding is generated in case the object has been modified after creation (see the \s-1BUGS\s0 section). .PP The encoding of the TBSCertificate portion of a certificate is cached in the \fBX509\fR structure internally to improve encoding performance and to ensure certificate signatures are verified correctly in some certificates with broken (non-DER) encodings. .PP If, after modification, the \fBX509\fR object is re-signed with \fBX509_sign()\fR, the encoding is automatically renewed. Otherwise, the encoding of the TBSCertificate portion of the \fBX509\fR can be manually renewed by calling \&\fBi2d_re_X509_tbs()\fR. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBd2i_X509_AUX()\fR returns a valid \fBX509\fR structure or \s-1NULL\s0 if an error occurred. .PP \&\fBi2d_X509_AUX()\fR returns the length of encoded data or \-1 on error. .PP \&\fBi2d_re_X509_tbs()\fR, \fBi2d_re_X509_CRL_tbs()\fR and \fBi2d_re_X509_REQ_tbs()\fR return the length of encoded data or 0 on error. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBERR_get_error\fR\|(3) \&\fBX509_CRL_get0_by_serial\fR\|(3), \&\fBX509_get0_signature\fR\|(3), \&\fBX509_get_ext_d2i\fR\|(3), \&\fBX509_get_extension_flags\fR\|(3), \&\fBX509_get_pubkey\fR\|(3), \&\fBX509_get_subject_name\fR\|(3), \&\fBX509_get_version\fR\|(3), \&\fBX509_NAME_add_entry_by_txt\fR\|(3), \&\fBX509_NAME_ENTRY_get_object\fR\|(3), \&\fBX509_NAME_get_index_by_NID\fR\|(3), \&\fBX509_NAME_print_ex\fR\|(3), \&\fBX509_new\fR\|(3), \&\fBX509_sign\fR\|(3), \&\fBX509V3_get_d2i\fR\|(3), \&\fBX509_verify_cert\fR\|(3) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2002\-2018 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
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