X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Fdes.h;h=e80bdd3e699f8c260e897acdd0b834fdb54d258f;hb=c3d15329443d5750832268bcc61689b738eb94e1;hp=d9fe7a42e409fe99cf9c0d9e7d019c259e06454e;hpb=1b1ab19816b440c9979fc6258f746812963f052e;p=ffmpeg

diff --git a/libavutil/des.h b/libavutil/des.h
index d9fe7a42e40..e80bdd3e699 100644
--- a/libavutil/des.h
+++ b/libavutil/des.h
@@ -19,9 +19,34 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef FFMPEG_DES_H
-#define FFMPEG_DES_H
+#ifndef AVUTIL_DES_H
+#define AVUTIL_DES_H
 
-uint64_t ff_des_encdec(uint64_t in, uint64_t key, int decrypt);
+#include <stdint.h>
 
-#endif /* FFMPEG_DES_H */
+struct AVDES {
+    uint64_t round_keys[3][16];
+    int triple_des;
+};
+
+/**
+ * \brief Initializes an AVDES context.
+ *
+ * \param key_bits must be 64 or 192
+ * \param decrypt 0 for encryption, 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.
+ *
+ * \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
+ */
+void av_des_crypt(struct AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);
+
+#endif /* AVUTIL_DES_H */