[Minor] Add method to decrypt data using keypair

1 files changed, 17 insertions, 0 deletions

diff --git a/src/libcryptobox/keypair.h b/src/libcryptobox/keypair.h
index b24ecc9aa..fc17412e2 100644
--- a/src/libcryptobox/keypair.h
+++ b/src/libcryptobox/keypair.h
@@ -28,6 +28,8 @@ enum rspamd_cryptobox_keypair_type {
 	RSPAMD_KEYPAIR_SIGN
 };
 
+extern const guchar encrypted_magic[7];
+
 /**
  * Opaque structure for the full (public + private) keypair
  */
@@ -270,5 +272,20 @@ gboolean rspamd_keypair_verify (struct rspamd_cryptobox_pubkey *pk,
 gboolean rspamd_pubkey_equal (const struct rspamd_cryptobox_pubkey *k1,
 		const struct rspamd_cryptobox_pubkey *k2);
 
+/**
+ * Decrypts data using keypair and a pubkey stored in in, in must start from
+ * `encrypted_magic` constant
+ * @param kp keypair
+ * @param in raw input
+ * @param inlen input length
+ * @param out output (allocated internally using g_malloc)
+ * @param outlen output size
+ * @return TRUE if decryption is completed, out must be freed in this case
+ */
+gboolean rspamd_keypair_decrypt (struct rspamd_cryptobox_keypair *kp,
+								 const guchar *in, gsize inlen,
+								 guchar **out, gsize *outlen,
+								 GError **err);
+
 
 #endif /* SRC_LIBCRYPTOBOX_KEYPAIR_H_ */