commit 8f4924e11c605ddbd450bbcf45a66f8d943051f5
Author: orignal <i2porignal@yandex.ru>
Date:   Mon Apr 10 18:37:40 2017 -0400

    cryptogrpahy

diff --git a/Cryptography.md b/Cryptography.md
new file mode 100644
index 0000000..63e23be
--- /dev/null
+++ b/Cryptography.md
@@ -0,0 +1,13 @@
+Hash
+====
+
+GOST_R_3411_2012-256(GOST_R_3411_2012-512())  
+Message and result are assumed in Big Endian
+
+Proof-of-work
+=============
+Same as hash  
+
+Signatures
+==========
+GOST_R_3410_2012 over the hash