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Title "X509_GET_SERIALNUMBER 3"
X509_GET_SERIALNUMBER 3 "2023-08-01" "3.0.10" "OpenSSL"
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"NAME"
X509_get_serialNumber, X509_get0_serialNumber, X509_set_serialNumber \- get or set certificate serial number
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1 #include <openssl/x509.h> \& ASN1_INTEGER *X509_get_serialNumber(X509 *x); const ASN1_INTEGER *X509_get0_serialNumber(const X509 *x); int X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial); .Ve
"DESCRIPTION"
Header "DESCRIPTION" \fBX509_get_serialNumber() returns the serial number of certificate x as an \fB\s-1ASN1_INTEGER\s0 structure which can be examined or initialised. The value returned is an internal pointer which \s-1MUST NOT\s0 be freed up after the call.

\fBX509_get0_serialNumber() is the same as X509_get_serialNumber() except it accepts a const parameter and returns a const result.

\fBX509_set_serialNumber() sets the serial number of certificate x to \fBserial. A copy of the serial number is used internally so serial should be freed up after use.

"RETURN VALUES"
Header "RETURN VALUES" \fBX509_get_serialNumber() and X509_get0_serialNumber() return an \s-1ASN1_INTEGER\s0 structure.

\fBX509_set_serialNumber() returns 1 for success and 0 for failure.

"SEE ALSO"
Header "SEE ALSO" \fBd2i_X509\|(3), \fBERR_get_error\|(3), \fBX509_CRL_get0_by_serial\|(3), \fBX509_get0_signature\|(3), \fBX509_get_ext_d2i\|(3), \fBX509_get_extension_flags\|(3), \fBX509_get_pubkey\|(3), \fBX509_get_subject_name\|(3), \fBX509_NAME_add_entry_by_txt\|(3), \fBX509_NAME_ENTRY_get_object\|(3), \fBX509_NAME_get_index_by_NID\|(3), \fBX509_NAME_print_ex\|(3), \fBX509_new\|(3), \fBX509_sign\|(3), \fBX509V3_get_d2i\|(3), \fBX509_verify_cert\|(3)
"HISTORY"
Header "HISTORY" The X509_get_serialNumber() and X509_set_serialNumber() functions are available in all versions of OpenSSL. The X509_get0_serialNumber() function was added in OpenSSL 1.1.0.
"COPYRIGHT"
Header "COPYRIGHT" Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (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>.