Generate certificates with unique serial numbers (#645)

This commit is contained in:
Cameron Gutman
2022-12-28 13:03:41 -06:00
committed by GitHub
parent ad20572dde
commit a996902a33
2 changed files with 7 additions and 1 deletions

View File

@@ -410,7 +410,12 @@ creds_t gen_creds(const std::string_view &cn, std::uint32_t key_bits) {
EVP_PKEY_keygen(ctx.get(), &pkey);
X509_set_version(x509.get(), 2);
ASN1_INTEGER_set(X509_get_serialNumber(x509.get()), 0);
// Generate a real serial number to avoid SEC_ERROR_REUSED_ISSUER_AND_SERIAL with Firefox
bignum_t serial { BN_new() };
BN_rand(serial.get(), 159, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY); // 159 bits to fit in 20 bytes in DER format
BN_set_negative(serial.get(), 0); // Serial numbers must be positive
BN_to_ASN1_INTEGER(serial.get(), X509_get_serialNumber(x509.get()));
constexpr auto year = 60 * 60 * 24 * 365;
#if OPENSSL_VERSION_NUMBER < 0x10100000L