[PATCH] openssl: Support private_key blob in PEM format

[Wolfgang Steinwender]

Try to parse the private_key blob as private key in PEM format.
PEM format is already supported for private_key file and is now
also supported for private_key blob.

Signed-off-by: Wolfgang Steinwender <wsteinwender at pcs.com>
---
 src/crypto/tls_openssl.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/crypto/tls_openssl.c b/src/crypto/tls_openssl.c
index 345a35ee1..d3cf4b92c 100644
--- a/src/crypto/tls_openssl.c
+++ b/src/crypto/tls_openssl.c
@@ -3773,6 +3773,8 @@ static int tls_connection_private_key(struct tls_data *data,
 				      const u8 *private_key_blob,
 				      size_t private_key_blob_len)
 {
+	BIO *bio = NULL;
+	EVP_PKEY *pkey = NULL;
 	int ok;
 
 	if (private_key == NULL && private_key_blob == NULL)
@@ -3818,6 +3820,26 @@ static int tls_connection_private_key(struct tls_data *data,
 			break;
 		}
 
+		bio = BIO_new_mem_buf((u8 *)private_key_blob,
+				      private_key_blob_len);
+		if (bio) {
+			pkey = PEM_read_bio_PrivateKey(bio, NULL, tls_passwd_cb,
+						       (void *) private_key_passwd);
+			if (pkey) {
+				if (SSL_use_PrivateKey(conn->ssl, pkey) == 1) {
+					wpa_printf(MSG_DEBUG, "OpenSSL: "
+						   "SSL_use_PrivateKey --> OK");
+					ok = 1;
+					EVP_PKEY_free(pkey);
+					BIO_free(bio);
+					break;
+				}
+				EVP_PKEY_free(pkey);
+			}
+			BIO_free(bio);
+		}
+
+
 		if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob,
 					 private_key_blob_len,
 					 private_key_passwd) == 0) {
-- 
2.31.1