Make sure we use the libctx in libssl when loading PrivateKeys

Since loading a private key might require algorithm fetches we should
make sure the correct libctx is used.
Reviewed-by: NShane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11494)

ssl/ssl_rsa.c

@@ -264,12 +264,15 @@ int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)
     }
     if (type == SSL_FILETYPE_PEM) {
         j = ERR_R_PEM_LIB;
-        pkey = PEM_read_bio_PrivateKey(in, NULL,
-                                       ssl->default_passwd_callback,
-                                       ssl->default_passwd_callback_userdata);
+        pkey = PEM_read_bio_PrivateKey_ex(in, NULL,
+                                          ssl->default_passwd_callback,
+                                          ssl->default_passwd_callback_userdata,
+                                          ssl->ctx->libctx,
+                                          ssl->ctx->propq);
     } else if (type == SSL_FILETYPE_ASN1) {
         j = ERR_R_ASN1_LIB;
-        pkey = d2i_PrivateKey_bio(in, NULL);
+        pkey = d2i_PrivateKey_ex_bio(in, NULL, ssl->ctx->libctx,
+                                     ssl->ctx->propq);
     } else {
         SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
         goto end;
@@ -293,7 +296,8 @@ int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d,
     EVP_PKEY *pkey;
 
     p = d;
-    if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) {
+    if ((pkey = d2i_PrivateKey_ex(type, NULL, &p, (long)len, ssl->ctx->libctx,
+                                  ssl->ctx->propq)) == NULL) {
         SSLerr(SSL_F_SSL_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
         return 0;
     }
@@ -551,12 +555,13 @@ int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type)
     }
     if (type == SSL_FILETYPE_PEM) {
         j = ERR_R_PEM_LIB;
-        pkey = PEM_read_bio_PrivateKey(in, NULL,
+        pkey = PEM_read_bio_PrivateKey_ex(in, NULL,
                                        ctx->default_passwd_callback,
-                                       ctx->default_passwd_callback_userdata);
+                                       ctx->default_passwd_callback_userdata,
+                                       ctx->libctx, ctx->propq);
     } else if (type == SSL_FILETYPE_ASN1) {
         j = ERR_R_ASN1_LIB;
-        pkey = d2i_PrivateKey_bio(in, NULL);
+        pkey = d2i_PrivateKey_ex_bio(in, NULL, ctx->libctx, ctx->propq);
     } else {
         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
         goto end;
@@ -580,7 +585,8 @@ int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx,
     EVP_PKEY *pkey;
 
     p = d;
-    if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) {
+    if ((pkey = d2i_PrivateKey_ex(type, NULL, &p, (long)len, ctx->libctx,
+                                  ctx->propq)) == NULL) {
         SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
         return 0;
     }