cosmetic

[ffmpeg] / libavutil / aes.h

diff --git a/libavutil/aes.h b/libavutil/aes.h
index ccafc3f7616b32c6aa1f8b327fd809536faec19d..7d02aafec93cb0818f75fc8f0809660708f3ccf4 100644 (file)
--- a/libavutil/aes.h
+++ b/libavutil/aes.h
@@ -21,6 +21,25 @@
 #ifndef AES_H
 #define AES_H
 
+extern const int av_aes_size;
+
 struct AVAES;
 
+/**
+ * initalizes a AVAES context
+ * @param key_bits 128, 192 or 256
+ * @param decrypt 0 for encryption, 1 for decryption
+ */
+int av_aes_init(struct AVAES *a, uint8_t *key, int key_bits, int decrypt);
+
+/**
+ * encrypts / decrypts.
+ * @param count number of 16 byte blocks
+ * @param dst destination array, can be equal to src
+ * @param src source array, can be equal to dst
+ * @param iv initalization vector for CBC mode, if NULL then ECB will be used
+ * @param decrypt 0 for encryption, 1 for decryption
+ */
+void av_aes_crypt(struct AVAES *a, uint8_t *dst, uint8_t *src, int count, uint8_t *iv, int decrypt);
+
 #endif /* AES_H */