Add in header fields for per-object encryption/authentication.

[bluesky.git] / bluesky / bluesky.h

diff --git a/bluesky/bluesky.h b/bluesky/bluesky.h
index c4d175e..9805086 100644 (file)
--- a/bluesky/bluesky.h
+++ b/bluesky/bluesky.h
@@ -88,6 +88,12 @@ void bluesky_string_resize(BlueSkyRCStr *string, gsize len);
 /* Cryptographic operations. */
 #define CRYPTO_BLOCK_SIZE 16        /* 128-bit AES */
 #define CRYPTO_KEY_SIZE   16
+#define CRYPTO_HASH_SIZE  32        /* SHA-256 */
+
+struct BlueSkyCryptKeys {
+    uint8_t encryption_key[CRYPTO_KEY_SIZE];
+    uint8_t authentication_key[CRYPTO_HASH_SIZE];
+};
 
 void bluesky_crypt_init();
 void bluesky_crypt_hash_key(const char *keystr, uint8_t *out);