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libzrtpcpp/libzrtpcpp-openssl3.patch

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From: Pedro Monreal Gonzalez <pmonrealgonzalez@suse.com>
Date: 2024-10-22 12:59:25+0000
Subject: Adapt libzrtpcpp to build with OpenSSL 3
References: https://bugzilla.opensuse.org/1219884
---
zrtp/crypto/openssl/InitializeOpenSSL.cpp | 12 +++++++++
zrtp/crypto/openssl/hmac256.cpp | 18 +++++++++++++
zrtp/crypto/openssl/hmac384.cpp | 18 +++++++++++++
zrtp/crypto/openssl/zrtpDH.cpp | 39 ++++++++++++++++++++++++++++++
4 files changed, 87 insertions(+)
Index: ZRTPCPP-4.7.0/zrtp/crypto/openssl/InitializeOpenSSL.cpp
===================================================================
--- ZRTPCPP-4.7.0.orig/zrtp/crypto/openssl/InitializeOpenSSL.cpp
+++ ZRTPCPP-4.7.0/zrtp/crypto/openssl/InitializeOpenSSL.cpp
@@ -18,6 +18,10 @@
#include <openssl/evp.h>
#include <config.h>
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+# define CRYPTO_get_lock_name(type) (NULL)
+#endif
+
#ifdef _MSWINDOWS_
#include <windows.h>
#endif
@@ -134,7 +138,11 @@ static void threadLockCleanup(void) {
for (i = 0; i < CRYPTO_num_locks(); i++) {
/* rwlock_destroy(&(lock_cs[i])); */
mutex_destroy(&(lock_cs[i]));
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
fprintf(stderr,"%8ld:%s\n",lock_count[i],CRYPTO_get_lock_name(i));
+#else
+ fprintf(stderr,"%8ld\n",lock_count[i]);
+#endif
}
OPENSSL_free(lock_cs);
OPENSSL_free(lock_count);
@@ -199,8 +207,12 @@ static void threadLockCleanup(void)
fprintf(stderr,"cleanup\n");
for (i = 0; i < CRYPTO_num_locks(); i++) {
pthread_mutex_destroy(&(lock_cs[i]));
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
fprintf(stderr,"%8ld:%s\n",lock_count[i],
CRYPTO_get_lock_name(i));
+#else
+ fprintf(stderr,"%8ld\n",lock_count[i]);
+#endif
}
OPENSSL_free(lock_cs);
OPENSSL_free(lock_count);
Index: ZRTPCPP-4.7.0/zrtp/crypto/openssl/hmac256.cpp
===================================================================
--- ZRTPCPP-4.7.0.orig/zrtp/crypto/openssl/hmac256.cpp
+++ ZRTPCPP-4.7.0/zrtp/crypto/openssl/hmac256.cpp
@@ -32,13 +32,31 @@ void hmacSha256(const uint8_t* key, uint
uint8_t* mac, uint32_t* mac_length)
{
unsigned int tmp;
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_CTX ctx = {};
HMAC_CTX_init(&ctx);
HMAC_Init_ex( &ctx, key, static_cast<int>(key_length), EVP_sha256(), nullptr );
+#else
+ HMAC_CTX * ctx;
+ ctx = HMAC_CTX_new();
+ HMAC_Init_ex(ctx, key, key_length, EVP_sha256(), NULL);
+#endif
for (size_t i = 0, size = data.size(); i < size; i++) {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_Update(&ctx, data[i], dataLength[i]);
+#else
+ HMAC_Update(ctx, data[i], dataLength[i]);
+#endif
}
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_Final( &ctx, mac, &tmp);
+#else
+ HMAC_Final( ctx, mac, &tmp);
+#endif
*mac_length = tmp;
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_CTX_cleanup( &ctx );
+#else
+ HMAC_CTX_free( ctx );
+#endif
}
Index: ZRTPCPP-4.7.0/zrtp/crypto/openssl/hmac384.cpp
===================================================================
--- ZRTPCPP-4.7.0.orig/zrtp/crypto/openssl/hmac384.cpp
+++ ZRTPCPP-4.7.0/zrtp/crypto/openssl/hmac384.cpp
@@ -32,14 +32,32 @@ void hmacSha384(const uint8_t* key, uint
uint8_t* mac, uint32_t* mac_length)
{
unsigned int tmp;
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_CTX ctx = {};
HMAC_CTX_init( &ctx );
HMAC_Init_ex( &ctx, key, static_cast<int>(key_length), EVP_sha384(), nullptr );
+#else
+ HMAC_CTX * ctx;
+ ctx = HMAC_CTX_new();
+ HMAC_Init_ex(ctx, key, key_length, EVP_sha384(), NULL);
+#endif
for (size_t i = 0, size = data.size(); i < size; i++) {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_Update(&ctx, data[i], dataLength[i]);
+#else
+ HMAC_Update(ctx, data[i], dataLength[i]);
+#endif
}
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_Final( &ctx, mac, &tmp);
+#else
+ HMAC_Final(ctx, mac, &tmp);
+#endif
*mac_length = tmp;
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_CTX_cleanup( &ctx );
+#else
+ HMAC_CTX_free(ctx);
+#endif
}
Index: ZRTPCPP-4.7.0/zrtp/crypto/openssl/zrtpDH.cpp
===================================================================
--- ZRTPCPP-4.7.0.orig/zrtp/crypto/openssl/zrtpDH.cpp
+++ ZRTPCPP-4.7.0/zrtp/crypto/openssl/zrtpDH.cpp
@@ -201,6 +201,7 @@ ZrtpDH::ZrtpDH(const char* type) {
case DH3K:
ctx = static_cast<void*>(DH_new());
tmpCtx = static_cast<DH*>(ctx);
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
tmpCtx->g = BN_new();
BN_set_word(tmpCtx->g, DH_GENERATOR_2);
@@ -216,6 +217,23 @@ ZrtpDH::ZrtpDH(const char* type) {
}
break;
+#else
+ {
+ BIGNUM* g = BN_new();
+ BN_set_word(g, DH_GENERATOR_2);
+ if (pkType == DH2K) {
+ DH_set0_pqg(tmpCtx, BN_dup(bnP2048), NULL, g);
+ RAND_bytes(random, 32);
+ DH_set0_key(tmpCtx, NULL, BN_bin2bn(random, 32, NULL));
+ }
+ else if (pkType == DH3K) {
+ DH_set0_pqg(tmpCtx, BN_dup(bnP3072), NULL, g);
+ RAND_bytes(random, 64);
+ DH_set0_key(tmpCtx, NULL, BN_bin2bn(random, 32, NULL));
+ }
+ }
+ break;
+#endif
case EC25:
ctx = static_cast<void*>(EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
break;
@@ -252,11 +270,18 @@ int32_t ZrtpDH::computeSecretKey(uint8_t
if (pkType == DH2K || pkType == DH3K) {
auto* tmpCtx = static_cast<DH*>(ctx);
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
if (tmpCtx->pub_key != nullptr) {
BN_free(tmpCtx->pub_key);
}
tmpCtx->pub_key = BN_bin2bn(pubKeyBytes, getDhSize(), nullptr);
return DH_compute_key(secret, tmpCtx->pub_key, tmpCtx);
+#else
+ DH_set0_key(tmpCtx, BN_bin2bn(pubKeyBytes, getDhSize(), NULL), NULL);
+ BIGNUM* pub_key;
+ DH_get0_key(tmpCtx, const_cast<const BIGNUM**>(&pub_key), NULL);
+ return DH_compute_key(secret, pub_key, tmpCtx);
+#endif
}
if (pkType == EC25 || pkType == EC38) {
uint8_t buffer[200];
@@ -305,7 +330,15 @@ uint32_t ZrtpDH::getDhSize() const
int32_t ZrtpDH::getPubKeySize() const
{
if (pkType == DH2K || pkType == DH3K)
+ {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
return BN_num_bytes(static_cast<DH*>(ctx)->pub_key);
+#else
+ BIGNUM* pub_key;
+ DH_get0_key(static_cast<DH*>(ctx), const_cast<const BIGNUM**>(&pub_key), NULL);
+ return BN_num_bytes(pub_key);
+#endif
+ }
if (pkType == EC25 || pkType == EC38)
return EC_POINT_point2oct(EC_KEY_get0_group(static_cast<EC_KEY*>(ctx)),
@@ -324,7 +357,13 @@ int32_t ZrtpDH::getPubKeyBytes(uint8_t *
if (prepend > 0) {
memset(buf, 0, prepend);
}
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
return BN_bn2bin(static_cast<DH*>(ctx)->pub_key, buf + prepend);
+#else
+ BIGNUM* pub_key;
+ DH_get0_key(static_cast<DH*>(ctx), const_cast<const BIGNUM**>(&pub_key), NULL);
+ return BN_bn2bin(pub_key, buf + prepend);
+#endif
}
if (pkType == EC25 || pkType == EC38) {
uint8_t buffer[200];
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