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https://gitlab.torproject.org/tpo/core/tor.git
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Merge remote-tracking branch 'yawning/ticket16140'
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commit
45a90573e6
6
changes/ticket16140
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6
changes/ticket16140
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@ -0,0 +1,6 @@
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o Removed features:
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- Tor no longer supports copies of OpenSSL that are missing support for
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Elliptic Curve Cryptography. In particular support for at least one of
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P256 or P224 is now required, with manual configuration needed if only
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P224 is available.
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@ -49,6 +49,9 @@
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#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(1,0,0)
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#error "We require OpenSSL >= 1.0.0"
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#endif
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#ifdef OPENSSL_NO_EC
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#error "We require OpenSSL with ECC support"
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#endif
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#include <openssl/ssl.h>
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#include <openssl/ssl3.h>
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@ -475,7 +478,6 @@ tor_tls_init(void)
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SSL_load_error_strings();
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#if (SIZEOF_VOID_P >= 8 && \
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!defined(OPENSSL_NO_EC) && \
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OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,1))
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long version = SSLeay();
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@ -1327,7 +1329,6 @@ tor_tls_context_new(crypto_pk_t *identity, unsigned int key_lifetime,
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SSL_CTX_set_tmp_dh(result->ctx, crypto_dh_get_dh_(dh));
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crypto_dh_free(dh);
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}
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#if !defined(OPENSSL_NO_EC)
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if (! is_client) {
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int nid;
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EC_KEY *ec_key;
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@ -1343,9 +1344,6 @@ tor_tls_context_new(crypto_pk_t *identity, unsigned int key_lifetime,
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SSL_CTX_set_tmp_ecdh(result->ctx, ec_key);
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EC_KEY_free(ec_key);
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}
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#else
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(void)flags;
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#endif
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SSL_CTX_set_verify(result->ctx, SSL_VERIFY_PEER,
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always_accept_verify_cb);
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/* let us realloc bufs that we're writing from */
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@ -2933,3 +2931,29 @@ tor_tls_init_bufferevent(tor_tls_t *tls, struct bufferevent *bufev_in,
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}
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#endif
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/** Check whether the ECC group requested is supported by the current OpenSSL
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* library instance. Return 1 if the group is supported, and 0 if not.
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*/
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int
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evaluate_ecgroup_for_tls(const char *ecgroup)
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{
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EC_KEY *ec_key;
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int nid;
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int ret;
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if (!ecgroup)
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nid = NID_tor_default_ecdhe_group;
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else if (!strcasecmp(ecgroup, "P256"))
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nid = NID_X9_62_prime256v1;
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else if (!strcasecmp(ecgroup, "P224"))
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nid = NID_secp224r1;
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else
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return 0;
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ec_key = EC_KEY_new_by_curve_name(nid);
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ret = (ec_key != NULL);
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EC_KEY_free(ec_key);
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return ret;
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}
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@ -139,5 +139,7 @@ int tor_tls_cert_is_valid(int severity,
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int check_rsa_1024);
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const char *tor_tls_get_ciphersuite_name(tor_tls_t *tls);
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int evaluate_ecgroup_for_tls(const char *ecgroup);
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#endif
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@ -2806,6 +2806,9 @@ options_validate(or_options_t *old_options, or_options_t *options,
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COMPLAIN("Unrecognized TLSECGroup: Falling back to the default.");
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tor_free(options->TLSECGroup);
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}
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if (!evaluate_ecgroup_for_tls(options->TLSECGroup)) {
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REJECT("Unsupported TLSECGroup.");
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}
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if (options->ExcludeNodes && options->StrictNodes) {
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COMPLAIN("You have asked to exclude certain relays from all positions "
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@ -19,11 +19,9 @@ const char tor_git_revision[] = "";
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#include "relay.h"
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#include <openssl/opensslv.h>
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#include <openssl/evp.h>
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#ifndef OPENSSL_NO_EC
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#include <openssl/ec.h>
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#include <openssl/ecdh.h>
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#include <openssl/obj_mac.h>
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#endif
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#include "config.h"
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#include "crypto_curve25519.h"
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@ -502,8 +500,6 @@ bench_dh(void)
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" %f millisec each.\n", NANOCOUNT(start, end, iters)/1e6);
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}
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#if !defined(OPENSSL_NO_EC)
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#define HAVE_EC_BENCHMARKS
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static void
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bench_ecdh_impl(int nid, const char *name)
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{
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@ -553,7 +549,6 @@ bench_ecdh_p224(void)
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{
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bench_ecdh_impl(NID_secp224r1, "P-224");
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}
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#endif
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typedef void (*bench_fn)(void);
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@ -576,10 +571,8 @@ static struct benchmark_t benchmarks[] = {
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ENT(cell_aes),
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ENT(cell_ops),
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ENT(dh),
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#ifdef HAVE_EC_BENCHMARKS
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ENT(ecdh_p256),
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ENT(ecdh_p224),
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#endif
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{NULL,NULL,0}
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};
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