elligator test added

tests/Makefile

@@ -1,6 +1,6 @@
 CXXFLAGS += -Wall -Wextra -pedantic -O0 -g -std=c++11 -D_GLIBCXX_USE_NANOSLEEP=1 -I../libi2pd/ -pthread -Wl,--unresolved-symbols=ignore-in-object-files
 
-TESTS = test-gost test-gost-sig test-base-64 test-x25519 test-aeadchacha20poly1305 test-blinding
+TESTS = test-gost test-gost-sig test-base-64 test-x25519 test-aeadchacha20poly1305 test-blinding test-elligator
 
 all: $(TESTS) run
 
@@ -25,6 +25,9 @@ test-aeadchacha20poly1305: ../libi2pd/Crypto.cpp ../libi2pd/ChaCha20.cpp ../libi
 test-blinding: ../libi2pd/Crypto.cpp ../libi2pd/Blinding.cpp ../libi2pd/Ed25519.cpp ../libi2pd/I2PEndian.cpp ../libi2pd/Log.cpp ../libi2pd/util.cpp ../libi2pd/Identity.cpp ../libi2pd/Signature.cpp ../libi2pd/Timestamp.cpp test-blinding.cpp
 	 $(CXX) $(CXXFLAGS) $(NEEDED_CXXFLAGS) $(INCFLAGS) -o $@ $^ -lcrypto -lssl -lboost_system
 
+test-elligator: ../libi2pd/Elligator.cpp ../libi2pd/Crypto.cpp test-elligator.cpp
+	 $(CXX) $(CXXFLAGS) $(NEEDED_CXXFLAGS) $(INCFLAGS) -o $@ $^ -lcrypto -lssl -lboost_system
+
 run: $(TESTS)
 	@for TEST in $(TESTS); do ./$$TEST ; done
 

tests/test-elligator.cpp

@@ -0,0 +1,56 @@
+#include <cassert>
+#include <inttypes.h>
+#include <string.h>
+
+#include "Elligator.h"
+
+const uint8_t key[32] = 
+{
+	0x33, 0x95, 0x19, 0x64, 0x00, 0x3c, 0x94, 0x08, 0x78, 0x06, 0x3c, 0xcf, 0xd0, 0x34, 0x8a, 0xf4,
+	0x21, 0x50, 0xca, 0x16, 0xd2, 0x64, 0x6f, 0x2c, 0x58, 0x56, 0xe8, 0x33, 0x83, 0x77, 0xd8, 0x80
+};
+
+const uint8_t encoded_key[32] = 
+{
+	0x28, 0x20, 0xb6, 0xb2, 0x41, 0xe0, 0xf6, 0x8a, 0x6c, 0x4a, 0x7f, 0xee, 0x3d, 0x97, 0x82, 0x28,
+	0xef, 0x3a, 0xe4, 0x55, 0x33, 0xcd, 0x41, 0x0a, 0xa9, 0x1a, 0x41, 0x53, 0x31, 0xd8, 0x61, 0x2d
+};
+
+const uint8_t encoded1[32] =
+{
+	0xe7, 0x35, 0x07, 0xd3, 0x8b, 0xae, 0x63, 0x99, 0x2b, 0x3f, 0x57, 0xaa, 0xc4, 0x8c, 0x0a, 0xbc,
+	0x14, 0x50, 0x95, 0x89, 0x28, 0x84, 0x57, 0x99, 0x5a, 0x2b, 0x4c, 0xa3, 0x49, 0x0a, 0xa2, 0x07
+};
+
+const uint8_t key1[32] = 
+{
+	0x1e, 0x8a, 0xff, 0xfe, 0xd6, 0xbf, 0x53, 0xfe, 0x27, 0x1a, 0xd5, 0x72, 0x47, 0x32, 0x62, 0xde,
+	0xd8, 0xfa, 0xec, 0x68, 0xe5, 0xe6, 0x7e, 0xf4, 0x5e, 0xbb, 0x82, 0xee, 0xba, 0x52, 0x60, 0x4f
+};
+
+const uint8_t encoded2[32] =
+{
+	0x95, 0xa1, 0x60, 0x19, 0x04, 0x1d, 0xbe, 0xfe, 0xd9, 0x83, 0x20, 0x48, 0xed, 0xe1, 0x19, 0x28,
+	0xd9, 0x03, 0x65, 0xf2, 0x4a, 0x38, 0xaa, 0x7a, 0xef, 0x1b, 0x97, 0xe2, 0x39, 0x54, 0x10, 0x1b
+};
+
+const uint8_t key2[32] = 
+{
+	0x79, 0x4f, 0x05, 0xba, 0x3e, 0x3a, 0x72, 0x95, 0x80, 0x22, 0x46, 0x8c, 0x88, 0x98, 0x1e, 0x0b,
+	0xe5, 0x78, 0x2b, 0xe1, 0xe1, 0x14, 0x5c, 0xe2, 0xc3, 0xc6, 0xfd, 0xe1, 0x6d, 0xed, 0x53, 0x63
+};
+
+
+int main ()
+{
+	uint8_t buf[32];
+	i2p::crypto::Elligator2 el;
+	// encoding test
+	el.Encode (key, buf);
+	assert(memcmp (buf, encoded_key, 32) == 0);
+	// decoding test
+	el.Decode (encoded1, buf);
+	assert(memcmp (buf, key1, 32) == 0);
+	el.Decode (encoded2, buf);
+	assert(memcmp (buf, key2, 32) == 0);
+}