Add test for restartable signature
Test relies on deterministic signature as this uses plain sig internally, so
if deterministic works, then so does non-deterministic, while the reciprocal
is false. (Also, deterministic is enabled by default in config.h.)
Test case is taken from a RFC 6979 test vector, just manually converting (r,s)
to the encoded signature.
diff --git a/tests/suites/test_suite_ecdsa.data b/tests/suites/test_suite_ecdsa.data
index f2cf214..c236c28 100644
--- a/tests/suites/test_suite_ecdsa.data
+++ b/tests/suites/test_suite_ecdsa.data
@@ -265,3 +265,7 @@
ECDSA restartable read-verify: max_ops=250
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
ecdsa_read_restart:MBEDTLS_ECP_DP_SECP256R1:"04e8f573412a810c5f81ecd2d251bb94387e72f28af70dced90ebe75725c97a6428231069c2b1ef78509a22c59044319f6ed3cb750dfe64c2a282b35967a458ad6":"dee9d4d8b0e40a034602d6e638197998060f6e9f353ae1d10c94cd56476d3c92":"304502210098a5a1392abe29e4b0a4da3fefe9af0f8c32e5b839ab52ba6a05da9c3b7edd0f0220596f0e195ae1e58c1e53e9e7f0f030b274348a8c11232101778d89c4943f5ad2":250:4:64
+
+ECDSA restartable sign-write: secp256r1 restart disabled
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_SHA256_C
+ecdsa_write_restart:MBEDTLS_ECP_DP_SECP256R1:"C9AFA9D845BA75166B5C215767B1D6934E50C3DB36E89B127B8A622B120F6721":MBEDTLS_MD_SHA256:"test":"3045022100f1abb023518351cd71d881567b1ea663ed3efcf6c5132b354f28d3b0b7d383670220019f4113742a2b14bd25926b49c649155f267e60d3814b4c0cc84250e46f0083":0:0:0