X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Fdes.h;h=cda98122d31f32f0f1d76077ddf301265221a717;hb=8f5587c3d0bc4b5f075e4282215bda91a21fc12e;hp=c02f244350392e1856b22b3bcf91f69abe604a55;hpb=1a534c7f1e2cf672bbdd800e229cfe34eb089cc5;p=ffmpeg

diff --git a/libavutil/des.h b/libavutil/des.h
index c02f2443503..cda98122d31 100644
--- a/libavutil/des.h
+++ b/libavutil/des.h
@@ -2,20 +2,20 @@
  * DES encryption/decryption
  * Copyright (c) 2007 Reimar Doeffinger
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -30,23 +30,32 @@ struct AVDES {
 };
 
 /**
- * \brief Initializes an AVDES context.
+ * @brief Initializes an AVDES context.
  *
- * \param key_bits must be 64
- * \param decrypt 0 for encryption, 1 for decryption
+ * @param key_bits must be 64 or 192
+ * @param decrypt 0 for encryption/CBC-MAC, 1 for decryption
  */
 int av_des_init(struct AVDES *d, const uint8_t *key, int key_bits, int decrypt);
 
 /**
- * \brief Encrypts / decrypts using the DES algorithm.
+ * @brief Encrypts / decrypts using the DES algorithm.
  *
- * \param count number of 8 byte blocks
- * \param dst destination array, can be equal to src, must be 8-byte aligned
- * \param src source array, can be equal to dst, must be 8-byte aligned, may be NULL
- * \param iv initialization vector for CBC mode, if NULL then ECB will be used,
+ * @param count number of 8 byte blocks
+ * @param dst destination array, can be equal to src, must be 8-byte aligned
+ * @param src source array, can be equal to dst, must be 8-byte aligned, may be NULL
+ * @param iv initialization vector for CBC mode, if NULL then ECB will be used,
  *           must be 8-byte aligned
- * \param decrypt 0 for encryption, 1 for decryption
+ * @param decrypt 0 for encryption, 1 for decryption
  */
 void av_des_crypt(struct AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);
 
+/**
+ * @brief Calculates CBC-MAC using the DES algorithm.
+ *
+ * @param count number of 8 byte blocks
+ * @param dst destination array, can be equal to src, must be 8-byte aligned
+ * @param src source array, can be equal to dst, must be 8-byte aligned, may be NULL
+ */
+void av_des_mac(struct AVDES *d, uint8_t *dst, const uint8_t *src, int count);
+
 #endif /* AVUTIL_DES_H */