Document SSL_SESSION_set_protocol_version()

[openssl.git] / engines / e_ossltest.c

diff --git a/engines/e_ossltest.c b/engines/e_ossltest.c
index 6b006a4440a82e98ac2fe20755f5d76bc822ceff..ea752d5e9c5db557d4909252da93ef95c71475ef 100644 (file)
--- a/engines/e_ossltest.c
+++ b/engines/e_ossltest.c
@@ -25,7 +25,6 @@
 #include <openssl/aes.h>
 #include <openssl/crypto.h>
 
-#define OSSLTEST_LIB_NAME "OSSLTEST"
 #include "e_ossltest_err.c"
 
 /* Engine Id and Name */
@@ -265,11 +264,13 @@ static const EVP_CIPHER *ossltest_aes_128_cbc(void)
     return _hidden_aes_128_cbc;
 }
 static EVP_CIPHER *_hidden_aes_128_gcm = NULL;
+
 #define AES_GCM_FLAGS   (EVP_CIPH_FLAG_DEFAULT_ASN1 \
                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
                 | EVP_CIPH_CUSTOM_COPY |EVP_CIPH_FLAG_AEAD_CIPHER \
                 | EVP_CIPH_GCM_MODE)
+
 static const EVP_CIPHER *ossltest_aes_128_gcm(void)
 {
     if (_hidden_aes_128_gcm == NULL
@@ -615,38 +616,43 @@ int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                                const unsigned char *in, size_t inl)
 {
-    unsigned char *tmpbuf;
-    const size_t datalen = inl - EVP_GCM_TLS_EXPLICIT_IV_LEN
-                           - EVP_GCM_TLS_TAG_LEN;
+    unsigned char *tmpbuf = OPENSSL_malloc(inl);
 
-    tmpbuf = OPENSSL_malloc(datalen);
-    if (tmpbuf == NULL)
+    /* OPENSSL_malloc will return NULL if inl == 0 */
+    if (tmpbuf == NULL && inl > 0)
         return -1;
 
     /* Remember what we were asked to encrypt */
-    memcpy(tmpbuf, in + EVP_GCM_TLS_EXPLICIT_IV_LEN, datalen);
+    memcpy(tmpbuf, in, inl);
 
     /* Go through the motions of encrypting it */
     EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_gcm())(ctx, out, in, inl);
 
-    /*
-     * Throw it all away and just use the plaintext as the output with empty
-     * IV and tag
-     */
-    memset(out, 0, inl);
-    memcpy(out + EVP_GCM_TLS_EXPLICIT_IV_LEN, tmpbuf, datalen);
+    /* Throw it all away and just use the plaintext as the output */
+    memcpy(out, tmpbuf, inl);
     OPENSSL_free(tmpbuf);
 
-    return 1;
+    return inl;
 }
 
 static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
                                     void *ptr)
 {
-    int ret;
-
     /* Pass the ctrl down */
-    ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_gcm())(ctx, type, arg, ptr);
+    int ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_gcm())(ctx, type, arg, ptr);
 
-    return ret;
+    if (ret <= 0)
+        return ret;
+
+    switch(type) {
+    case EVP_CTRL_AEAD_GET_TAG:
+        /* Always give the same tag */
+        memset(ptr, 0, EVP_GCM_TLS_TAG_LEN);
+        break;
+
+    default:
+        break;
+    }
+
+    return 1;
 }