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Android: Use keystore ENGINE for private key operations

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The new keystore ENGINE is usable to perform private key operations when
we can't get the actual private key data. This is the case when hardware
crypto is enabled: the private key never leaves the hardware.

Subsequently, we need to be able to talk to OpenSSL ENGINEs that aren't
PKCS#11 or OpenSC. This just changes a few #define variables to allow us
to talk to our keystore engine without having one of those enabled and
without using a PIN.

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This commit is contained in:
Kenny Root 2012-03-20 17:00:47 -07:00 committed by Jouni Malinen
parent 6dc94a635c
commit 1176ab6dd4
1 changed files with 9 additions and 0 deletions
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9
src/crypto/tls_openssl.c
View file

@ -10,9 +10,11 @@
#ifndef CONFIG_SMARTCARD
#ifndef OPENSSL_NO_ENGINE
#ifndef ANDROID
#define OPENSSL_NO_ENGINE
#endif
#endif
#endif
#include <openssl/ssl.h>
#include <openssl/err.h>
@ -858,16 +860,21 @@ static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
return -1;
}
#ifndef ANDROID
if (pin == NULL) {
wpa_printf(MSG_ERROR, "ENGINE: Smartcard PIN not set");
return -1;
}
#endif
if (key_id == NULL) {
wpa_printf(MSG_ERROR, "ENGINE: Key Id not set");
return -1;
}
ERR_clear_error();
#ifdef ANDROID
ENGINE_load_dynamic();
#endif
conn->engine = ENGINE_by_id(engine_id);
if (!conn->engine) {
wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
@ -882,11 +889,13 @@ static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
}
wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
#ifndef ANDROID
if (ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
ERR_error_string(ERR_get_error(), NULL));
goto err;
}
#endif
/* load private key first in-case PIN is required for cert */
conn->private_key = ENGINE_load_private_key(conn->engine,
key_id, NULL, NULL);