tests: add BIP-352 test vectors

Add the BIP-352 test vectors. The vectors are generated with a Python script
that converts the .json file from the BIP to C code:

$ ./tools/tests_silentpayments_generate.py test_vectors.json > ./src/modules/silentpayments/vectors.h

Co-authored-by: Ron <4712150+macgyver13@users.noreply.github.com>
Co-authored-by: Sebastian Falbesoner <91535+thestack@users.noreply.github.com>
Co-authored-by: Tim Ruffing <1071625+real-or-random@users.noreply.github.com>

Author: 4 people

Makefile.am

@@ -263,6 +263,7 @@ maintainer-clean-local: clean-precomp
 ### Pregenerated test vectors
 ### (see the comments in the previous section for detailed rationale)
 TESTVECTORS = src/wycheproof/ecdsa_secp256k1_sha256_bitcoin_test.h
+TESTVECTORS += src/modules/silentpayments/vectors.h
 
 if ENABLE_MODULE_SILENTPAYMENTS
 TESTVECTORS += src/modules/silentpayments/vectors.h
@@ -280,6 +281,10 @@ src/wycheproof/ecdh_secp256k1_test.h:
 	mkdir -p $(@D)
 	python3 $(top_srcdir)/tools/tests_wycheproof_generate_ecdh.py $(top_srcdir)/src/wycheproof/ecdh_secp256k1_test.json > $@
 
+src/modules/silentpayments/vectors.h:
+	mkdir -p $(@D)
+	python3 $(top_srcdir)/tools/tests_silentpayments_generate.py $(top_srcdir)/src/modules/silentpayments/bip352_send_and_receive_test_vectors.json > $@
+
 testvectors: $(TESTVECTORS)
 
 BUILT_SOURCES += $(TESTVECTORS)

src/modules/silentpayments/Makefile.am.include

@@ -1,3 +1,5 @@
 include_HEADERS += include/secp256k1_silentpayments.h
 noinst_HEADERS += src/modules/silentpayments/main_impl.h
 noinst_HEADERS += src/modules/silentpayments/bench_impl.h
+noinst_HEADERS += src/modules/silentpayments/tests_impl.h
+noinst_HEADERS += src/modules/silentpayments/vectors.h