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X509_GET_SERIALNUMBER(3) Library Functions Manual X509_GET_SERIALNUMBER(3)

X509_get_serialNumber, X509_get0_serialNumber, X509_set_serialNumberget or set certificate serial number

#include <openssl/x509.h>

X509_get_serialNumber(X509 *x);

const ASN1_INTEGER *
X509_get0_serialNumber(const X509 *x);

X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial);

() returns the serial number of certificate x as an ASN1_INTEGER structure which can be examined or initialised. The value returned is an internal pointer which must not be freed up after the call.

() does the same except that it accepts a constant argument and returns a constant result.

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

X509_get_serialNumber() and X509_get0_serialNumber() return a pointer to an ASN1_INTEGER structure.

X509_set_serialNumber() returns 1 for success or 0 for failure. In some cases of failure, the reason can be determined with ERR_get_error(3).

d2i_X509(3), X509_CRL_get0_by_serial(3), X509_get_pubkey(3), X509_NAME_add_entry_by_txt(3), X509_NAME_ENTRY_get_object(3), X509_NAME_get_index_by_NID(3), X509_NAME_print_ex(3), X509_new(3), X509_sign(3), X509_verify_cert(3), X509V3_get_d2i(3)

X509_get_serialNumber() and X509_set_serialNumber() first appeared in SSLeay 0.6.5 and have been available since OpenBSD 2.4.

X509_get0_serialNumber() first appeared in OpenSSL 1.1.0 and has been available since OpenBSD 6.4.

June 19, 2020 OpenBSD-current