【openwrt】编译OpenWRT15.05（Chaos Calmer）u-boot-2014.10 rsa-sign出错
本帖最后由 sunsili 于 2023-8-16 13:17 编辑【openwrt】编译OpenWRT15.05（Chaos Calmer）mkimage(u-boot-2014.10) rsa-sign.c出错
编译OpenWRT 15.05（Chaos Calmer）的模块 tools/mkimage（u-boot-2014.10） 的时候碰到了下面的错误信息：
出错提示：
/home/fan/openwrt_CC_mt76xx_zhuotk_source/build_dir/host/u-boot-2014.10/lib/rsa/rsa-sign.c: In function 'rsa_get_exponent':
/home/fan/openwrt_CC_mt76xx_zhuotk_source/build_dir/host/u-boot-2014.10/lib/rsa/rsa-sign.c:279:21: error: dereferencing pointer to incomplete type 'RSA' {aka 'struct rsa_st'}
279 |if (BN_num_bits(key->e) > 64)
| ^
make: *** Error 1
make: *** Error 2
make: Leaving directory '/home/fan/openwrt_CC_mt76xx_zhuotk_source/build_dir/host/u-boot-2014.10'
make: *** Error 2
make: Leaving directory '/home/fan/openwrt_CC_mt76xx_zhuotk_source/tools/mkimage'
make: *** Error 2
make: Leaving directory '/home/fan/openwrt_CC_mt76xx_zhuotk_source'
make: *** Error 2
make: Leaving directory '/home/fan/openwrt_CC_mt76xx_zhuotk_source'
make: *** Error 2
原因
编译Server的OpenSSL版本是1.1x，OpenSSL 1.1.x对一些API做了改动，因此出现错误信息。
$ openssl version
OpenSSL 1.1.0g2 Nov 2017
解决方法
参考openwrt/tools/mkimage/patches/210-openssl-1.1.x-compat.patch at 70b104f98c0657323b28fce140b73a94bf3eb756
在此路径tools/mkimage/patches/
新建文件：210-openssl-1.1.x-compat.patch
文件内容
tools/mkimage/patches/210-openssl-1.1.x-compat.patch
--- a/lib/rsa/rsa-sign.c
+++ b/lib/rsa/rsa-sign.c
@@ -15,10 +15,25 @@
#include
#include
-#if OPENSSL_VERSION_NUMBER >= 0x10000000L
+#if OPENSSL_VERSION_NUMBER < 0x10000000L
+#define HAVE_ERR_REMOVE_STATE
+#elif OPENSSL_VERSION_NUMBER < 0x10100000L
#define HAVE_ERR_REMOVE_THREAD_STATE
#endif
+#if OPENSSL_VERSION_NUMBER < 0x10100005L
+static void RSA_get0_key(const RSA *r,
+ const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
+{
+ if (n != NULL)
+ *n = r->n;
+ if (e != NULL)
+ *e = r->e;
+ if (d != NULL)
+ *d = r->d;
+}
+#endif
+
static int rsa_err(const char *msg)
{
unsigned long sslErr = ERR_get_error();
@@ -154,7 +169,8 @@ static void rsa_remove(void)
ERR_free_strings();
#ifdef HAVE_ERR_REMOVE_THREAD_STATE
ERR_remove_thread_state(NULL);
-#else
+#endif
+#ifdef HAVE_ERR_REMOVE_STATE
ERR_remove_state(0);
#endif
EVP_cleanup();
@@ -210,7 +226,6 @@ static int rsa_sign_with_key(RSA *rsa, s
ret = rsa_err("Could not obtain signature");
goto err_sign;
}
- EVP_MD_CTX_cleanup(context);
EVP_MD_CTX_destroy(context);
EVP_PKEY_free(key);
@@ -270,23 +285,26 @@ static int rsa_get_exponent(RSA *key, ui
BIGNUM *bn_te;
uint64_t te;
+ const BIGNUM *bn_e;
+ RSA_get0_key(key, NULL, &bn_e, NULL);
+
ret = -EINVAL;
bn_te = NULL;
if (!e)
goto cleanup;
- if (BN_num_bits(key->e) > 64)
+ if (BN_num_bits(bn_e) > 64)
goto cleanup;
- *e = BN_get_word(key->e);
+ *e = BN_get_word(bn_e);
- if (BN_num_bits(key->e) < 33) {
+ if (BN_num_bits(bn_e) < 33) {
ret = 0;
goto cleanup;
}
- bn_te = BN_dup(key->e);
+ bn_te = BN_dup(bn_e);
if (!bn_te)
goto cleanup;
@@ -319,6 +337,9 @@ int rsa_get_params(RSA *key, uint64_t *e
BN_CTX *bn_ctx = BN_CTX_new();
int ret = 0;
+ const BIGNUM *bn_n;
+ RSA_get0_key(key, &bn_n, NULL, NULL);
+
/* Initialize BIGNUMs */
big1 = BN_new();
big2 = BN_new();
@@ -337,7 +358,7 @@ int rsa_get_params(RSA *key, uint64_t *e
if (0 != rsa_get_exponent(key, exponent))
ret = -1;
- if (!BN_copy(n, key->n) || !BN_set_word(big1, 1L) ||
+ if (!BN_copy(n, bn_n) || !BN_set_word(big1, 1L) ||
!BN_set_word(big2, 2L) || !BN_set_word(big32, 32L))
ret = -1; 放入tools/mkimage/patches/的patch，编译时会自动打补丁
重新编译则不会有此错误
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