1 files changed, 3 insertions, 0 deletions

diff --git a/src/encryption.h b/src/encryption.h
index eccb6b9..aa88048 100644
--- a/src/encryption.h
+++ b/src/encryption.h
@@ -6,4 +6,7 @@
 /* Overwrite an open file with "encrypted" data by XOR'ing each byte with a character from PASSPHRASE. Returns number of bytes overwritten, and -1 on error */
 size_t passenc(int fd, const char *passphrase);
 
+/* Encrypt file descriptor FD one block at a time using PASSPHRASE as the encryption key */
+size_t passencblock(int fd, const char *passphrase);
+
 #endif
\ No newline at end of file