diff options
Diffstat (limited to 'src/secp256k1/build-aux/m4/bitcoin_secp.m4')
| -rw-r--r-- | src/secp256k1/build-aux/m4/bitcoin_secp.m4 | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/src/secp256k1/build-aux/m4/bitcoin_secp.m4 b/src/secp256k1/build-aux/m4/bitcoin_secp.m4 index 57595f4499..ece3d655ed 100644 --- a/src/secp256k1/build-aux/m4/bitcoin_secp.m4 +++ b/src/secp256k1/build-aux/m4/bitcoin_secp.m4 @@ -36,16 +36,39 @@ if test x"$has_libcrypto" = x"yes" && test x"$has_openssl_ec" = x; then CPPFLAGS_TEMP="$CPPFLAGS" CPPFLAGS="$CRYPTO_CPPFLAGS $CPPFLAGS" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #include <openssl/bn.h> #include <openssl/ec.h> #include <openssl/ecdsa.h> #include <openssl/obj_mac.h>]],[[ - EC_KEY *eckey = EC_KEY_new_by_curve_name(NID_secp256k1); - ECDSA_sign(0, NULL, 0, NULL, NULL, eckey); + # if OPENSSL_VERSION_NUMBER < 0x10100000L + void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps) {(void)sig->r; (void)sig->s;} + # endif + + unsigned int zero = 0; + const unsigned char *zero_ptr = (unsigned char*)&zero; + EC_KEY_free(EC_KEY_new_by_curve_name(NID_secp256k1)); + EC_KEY *eckey = EC_KEY_new(); + EC_GROUP *group = EC_GROUP_new_by_curve_name(NID_secp256k1); + EC_KEY_set_group(eckey, group); + ECDSA_sign(0, NULL, 0, NULL, &zero, eckey); ECDSA_verify(0, NULL, 0, NULL, 0, eckey); + o2i_ECPublicKey(&eckey, &zero_ptr, 0); + d2i_ECPrivateKey(&eckey, &zero_ptr, 0); + EC_KEY_check_key(eckey); EC_KEY_free(eckey); + EC_GROUP_free(group); ECDSA_SIG *sig_openssl; sig_openssl = ECDSA_SIG_new(); + d2i_ECDSA_SIG(&sig_openssl, &zero_ptr, 0); + i2d_ECDSA_SIG(sig_openssl, NULL); + ECDSA_SIG_get0(sig_openssl, NULL, NULL); ECDSA_SIG_free(sig_openssl); + const BIGNUM *bignum = BN_value_one(); + BN_is_negative(bignum); + BN_num_bits(bignum); + if (sizeof(zero) >= BN_num_bytes(bignum)) { + BN_bn2bin(bignum, (unsigned char*)&zero); + } ]])],[has_openssl_ec=yes],[has_openssl_ec=no]) AC_MSG_RESULT([$has_openssl_ec]) CPPFLAGS="$CPPFLAGS_TEMP" |