Dummy krb5_enctype_iov and friends.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23644 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/crypto.c

@@ -3204,6 +3204,108 @@ decrypt_internal_special(krb5_context context,
     return 0;
 }
 
+typedef struct krb5_crypto_iov {
+    unsigned int flags;
+#define KRB5_CRYPTO_TYPE_EMPTY		0 /* ignored */
+#define KRB5_CRYPTO_TYPE_SIGNATURE	1 /* OUT krb5_crypto_length_signature */
+#define KRB5_CRYPTO_TYPE_DATA		2 /* IN and OUT */
+#define KRB5_CRYPTO_TYPE_SIGN_ONLY	3 /* IN */
+#define KRB5_CRYPTO_TYPE_PADDING	4 /* OUT krb5_crypto_length_padding */
+    krb5_data data;
+} krb5_crypto_iov;
+
+/**
+ * Inline encrypt a kerberos message
+ *
+ * @param context Kerberos context
+ * @param crypto Kerberos crypto context
+ * @param usage Key usage for this buffer
+ * @param data array of buffers to process
+ * @param num_data length of array
+ * @param ivec initial cbc/cts vector
+ *
+ * @return Return an error code or 0.
+ * @ingroup krb5_crypto
+ *
+ * Kerberos encrypted data look like this:
+ * 
+ * 1. KRB5_CRYPTO_TYPE_SIGNATURE
+ * 2. array KRB5_CRYPTO_TYPE_DATA and KRB5_CRYPTO_TYPE_SIGN_ONLY in
+ *  any order, however the receiver have to aware of the
+ *  order. KRB5_CRYPTO_TYPE_SIGN_ONLY is commonly used headers and
+ *  trailers.
+ * 3. KRB5_CRYPTO_TYPE_PADDING (0 for cfx and rc4, 8 for des types)
+ */
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_encrypt_iov_ivec(krb5_context context,
+		      krb5_crypto crypto,
+		      unsigned usage,
+		      krb5_crypto_iov **data,
+		      size_t num_data,
+		      void *ivec)
+{
+    krb5_clear_error_string(context);
+    return KRB5_CRYPTO_INTERNAL;
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_crypto_length_signature(krb5_crypto crypto, size_t len)
+{
+    krb5_clear_error_string(context);
+    return KRB5_CRYPTO_INTERNAL;
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_crypto_length_padding(krb5_crypto crypto, size_t len)
+{
+    krb5_clear_error_string(context);
+    return KRB5_CRYPTO_INTERNAL;
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_encrypt_ivec_new(krb5_context context,
+		      krb5_crypto crypto,
+		      unsigned usage,
+		      const void *data,
+		      size_t len,
+		      krb5_data *result,
+		      void *ivec)
+{
+    krb5_crypto_iov iov[3];
+    krb5_error_code ret;
+    size_t total_len;
+    
+    total_len = 
+	krb5_crypto_signature_length(crypto, len) + len + 
+	krb5_crypto_padding_length(crypto, len);
+
+    ret = krb5_data_alloc(result, total_len);
+    if (ret) {
+	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+	return ret;
+    }
+
+    iov[0].flags = KRB5_CRYPTO_TYPE_SIGNATURE;
+    iov[0].data.length = krb5_crypto_length_signature(crypto, len);
+    iov[0].data.data = result->data;
+
+    iov[1].flags = KRB5_CRYPTO_TYPE_DATA;
+    iov[1].data.length = len;
+    iov[1].data.data = ((char *)result->data) + iov[0].data.length;
+    memcpy(iov[0].data.data, data);
+
+    iov[2].flags = KRB5_CRYPTO_TYPE_PADDING;
+    iov[2].data.length = krb5_crypto_length_padding(crypto, len);
+    iov[2].data.data = ((char *)result->data) + iov[0].data.length + len;
+
+    ret = krb5_encrypt_iov_ivec(context, crypto, usage, 
+				&iov, sizeof(iov)/sizeof(iov[0]), ivec);
+    if (ret)
+	krb5_data_free(result);
+    return ret;
+}
+
 
 krb5_error_code KRB5_LIB_FUNCTION
 krb5_encrypt_ivec(krb5_context context,