SM2 KAP (Key Agreement Protocol), not tested

crypto/sm2/sm2_asn1.c

@@ -0,0 +1,37 @@
+
+
+
+/*
+ * from GM/T 0009-2012
+ * "SM2 Cryptography Algorithm Application Specification"
+ *
+	SM2PrivateKey ::= INTEGER
+	
+	SM2PublicKey ::= BIT STRING
+
+	SM2CiphertextValue ::= SEQUENCE {
+		XCoordinate	INTEGER,
+		YCoordinate	INTEGER,
+		Hash		OCTET STRING SIZE(32),
+		Ciphertext	OCTET STRING
+	}
+
+	SM2Signature ::= SEQUENCE {
+		R		INTEGER,
+		S		INTEGER,
+	}
+
+	SM2EnvelopedKey ::= SEQUENCE {
+		symAlgID	AlgorithmIdentifier,
+		symEncryptedKey	SM2CiphertextValue,
+		sm2PublicKey	SM2PublicKey,
+		sm2EncryptedPrivateKey	BIT STRING
+	}
+
+	ZID = SM3(nbits(ID)||ID||a||b||xG||yG||xA||yA)
+	
+	Default ID = "1234567812345678"
+
+*/
+
+