crypto: curve25519 - add kpp selftest

In preparation of introducing KPP implementations of Curve25519, import
the set of test cases proposed by the Zinc patch set, but converted to
the KPP format.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 535772851c2aca5d99ec0f5b822cf47eb728f36a..82513b6b0abd0f43b146b26e1b1f0272ae2df503 100644 (file)
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -4317,6 +4317,12 @@ static const struct alg_test_desc alg_test_descs[] = {
                .alg = "cts(cbc(paes))",
                .test = alg_test_null,
                .fips_allowed = 1,
+       }, {
+               .alg = "curve25519",
+               .test = alg_test_kpp,
+               .suite = {
+                       .kpp = __VECS(curve25519_tv_template)
+               }
        }, {
                .alg = "deflate",
                .test = alg_test_comp,

diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index dbfb86025198548d56e5123a24dc2c918784ce89..48da646651cb3f2f5428aa9229275f0f970b7fdc 100644 (file)
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -1030,6 +1030,1231 @@ static const struct kpp_testvec dh_tv_template[] = {
        }
 };
 
+static const struct kpp_testvec curve25519_tv_template[] = {
+{
+       .secret = (u8[32]){ 0x77, 0x07, 0x6d, 0x0a, 0x73, 0x18, 0xa5, 0x7d,
+                    0x3c, 0x16, 0xc1, 0x72, 0x51, 0xb2, 0x66, 0x45,
+                    0xdf, 0x4c, 0x2f, 0x87, 0xeb, 0xc0, 0x99, 0x2a,
+                    0xb1, 0x77, 0xfb, 0xa5, 0x1d, 0xb9, 0x2c, 0x2a },
+       .b_public = (u8[32]){ 0xde, 0x9e, 0xdb, 0x7d, 0x7b, 0x7d, 0xc1, 0xb4,
+                   0xd3, 0x5b, 0x61, 0xc2, 0xec, 0xe4, 0x35, 0x37,
+                   0x3f, 0x83, 0x43, 0xc8, 0x5b, 0x78, 0x67, 0x4d,
+                   0xad, 0xfc, 0x7e, 0x14, 0x6f, 0x88, 0x2b, 0x4f },
+       .expected_ss = (u8[32]){ 0x4a, 0x5d, 0x9d, 0x5b, 0xa4, 0xce, 0x2d, 0xe1,
+                   0x72, 0x8e, 0x3b, 0xf4, 0x80, 0x35, 0x0f, 0x25,
+                   0xe0, 0x7e, 0x21, 0xc9, 0x47, 0xd1, 0x9e, 0x33,
+                   0x76, 0xf0, 0x9b, 0x3c, 0x1e, 0x16, 0x17, 0x42 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+{
+       .secret = (u8[32]){ 0x5d, 0xab, 0x08, 0x7e, 0x62, 0x4a, 0x8a, 0x4b,
+                    0x79, 0xe1, 0x7f, 0x8b, 0x83, 0x80, 0x0e, 0xe6,
+                    0x6f, 0x3b, 0xb1, 0x29, 0x26, 0x18, 0xb6, 0xfd,
+                    0x1c, 0x2f, 0x8b, 0x27, 0xff, 0x88, 0xe0, 0xeb },
+       .b_public = (u8[32]){ 0x85, 0x20, 0xf0, 0x09, 0x89, 0x30, 0xa7, 0x54,
+                   0x74, 0x8b, 0x7d, 0xdc, 0xb4, 0x3e, 0xf7, 0x5a,
+                   0x0d, 0xbf, 0x3a, 0x0d, 0x26, 0x38, 0x1a, 0xf4,
+                   0xeb, 0xa4, 0xa9, 0x8e, 0xaa, 0x9b, 0x4e, 0x6a },
+       .expected_ss = (u8[32]){ 0x4a, 0x5d, 0x9d, 0x5b, 0xa4, 0xce, 0x2d, 0xe1,
+                   0x72, 0x8e, 0x3b, 0xf4, 0x80, 0x35, 0x0f, 0x25,
+                   0xe0, 0x7e, 0x21, 0xc9, 0x47, 0xd1, 0x9e, 0x33,
+                   0x76, 0xf0, 0x9b, 0x3c, 0x1e, 0x16, 0x17, 0x42 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+{
+       .secret = (u8[32]){ 1 },
+       .b_public = (u8[32]){ 0x25, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .expected_ss = (u8[32]){ 0x3c, 0x77, 0x77, 0xca, 0xf9, 0x97, 0xb2, 0x64,
+                   0x41, 0x60, 0x77, 0x66, 0x5b, 0x4e, 0x22, 0x9d,
+                   0x0b, 0x95, 0x48, 0xdc, 0x0c, 0xd8, 0x19, 0x98,
+                   0xdd, 0xcd, 0xc5, 0xc8, 0x53, 0x3c, 0x79, 0x7f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+{
+       .secret = (u8[32]){ 1 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0xb3, 0x2d, 0x13, 0x62, 0xc2, 0x48, 0xd6, 0x2f,
+                   0xe6, 0x26, 0x19, 0xcf, 0xf0, 0x4d, 0xd4, 0x3d,
+                   0xb7, 0x3f, 0xfc, 0x1b, 0x63, 0x08, 0xed, 0xe3,
+                   0x0b, 0x78, 0xd8, 0x73, 0x80, 0xf1, 0xe8, 0x34 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+{
+       .secret = (u8[32]){ 0xa5, 0x46, 0xe3, 0x6b, 0xf0, 0x52, 0x7c, 0x9d,
+                    0x3b, 0x16, 0x15, 0x4b, 0x82, 0x46, 0x5e, 0xdd,
+                    0x62, 0x14, 0x4c, 0x0a, 0xc1, 0xfc, 0x5a, 0x18,
+                    0x50, 0x6a, 0x22, 0x44, 0xba, 0x44, 0x9a, 0xc4 },
+       .b_public = (u8[32]){ 0xe6, 0xdb, 0x68, 0x67, 0x58, 0x30, 0x30, 0xdb,
+                   0x35, 0x94, 0xc1, 0xa4, 0x24, 0xb1, 0x5f, 0x7c,
+                   0x72, 0x66, 0x24, 0xec, 0x26, 0xb3, 0x35, 0x3b,
+                   0x10, 0xa9, 0x03, 0xa6, 0xd0, 0xab, 0x1c, 0x4c },
+       .expected_ss = (u8[32]){ 0xc3, 0xda, 0x55, 0x37, 0x9d, 0xe9, 0xc6, 0x90,
+                   0x8e, 0x94, 0xea, 0x4d, 0xf2, 0x8d, 0x08, 0x4f,
+                   0x32, 0xec, 0xcf, 0x03, 0x49, 0x1c, 0x71, 0xf7,
+                   0x54, 0xb4, 0x07, 0x55, 0x77, 0xa2, 0x85, 0x52 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+{
+       .secret = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0x0a, 0xff, 0xff, 0xff,
+                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0x0a, 0x00, 0xfb, 0x9f },
+       .expected_ss = (u8[32]){ 0x77, 0x52, 0xb6, 0x18, 0xc1, 0x2d, 0x48, 0xd2,
+                   0xc6, 0x93, 0x46, 0x83, 0x81, 0x7c, 0xc6, 0x57,
+                   0xf3, 0x31, 0x03, 0x19, 0x49, 0x48, 0x20, 0x05,
+                   0x42, 0x2b, 0x4e, 0xae, 0x8d, 0x1d, 0x43, 0x23 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+{
+       .secret = (u8[32]){ 0x8e, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .b_public = (u8[32]){ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x06 },
+       .expected_ss = (u8[32]){ 0x5a, 0xdf, 0xaa, 0x25, 0x86, 0x8e, 0x32, 0x3d,
+                   0xae, 0x49, 0x62, 0xc1, 0x01, 0x5c, 0xb3, 0x12,
+                   0xe1, 0xc5, 0xc7, 0x9e, 0x95, 0x3f, 0x03, 0x99,
+                   0xb0, 0xba, 0x16, 0x22, 0xf3, 0xb6, 0xf7, 0x0c },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - normal case */
+{
+       .secret = (u8[32]){ 0x48, 0x52, 0x83, 0x4d, 0x9d, 0x6b, 0x77, 0xda,
+                    0xde, 0xab, 0xaa, 0xf2, 0xe1, 0x1d, 0xca, 0x66,
+                    0xd1, 0x9f, 0xe7, 0x49, 0x93, 0xa7, 0xbe, 0xc3,
+                    0x6c, 0x6e, 0x16, 0xa0, 0x98, 0x3f, 0xea, 0xba },
+       .b_public = (u8[32]){ 0x9c, 0x64, 0x7d, 0x9a, 0xe5, 0x89, 0xb9, 0xf5,
+                   0x8f, 0xdc, 0x3c, 0xa4, 0x94, 0x7e, 0xfb, 0xc9,
+                   0x15, 0xc4, 0xb2, 0xe0, 0x8e, 0x74, 0x4a, 0x0e,
+                   0xdf, 0x46, 0x9d, 0xac, 0x59, 0xc8, 0xf8, 0x5a },
+       .expected_ss = (u8[32]){ 0x87, 0xb7, 0xf2, 0x12, 0xb6, 0x27, 0xf7, 0xa5,
+                   0x4c, 0xa5, 0xe0, 0xbc, 0xda, 0xdd, 0xd5, 0x38,
+                   0x9d, 0x9d, 0xe6, 0x15, 0x6c, 0xdb, 0xcf, 0x8e,
+                   0xbe, 0x14, 0xff, 0xbc, 0xfb, 0x43, 0x65, 0x51 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key on twist */
+{
+       .secret = (u8[32]){ 0x58, 0x8c, 0x06, 0x1a, 0x50, 0x80, 0x4a, 0xc4,
+                    0x88, 0xad, 0x77, 0x4a, 0xc7, 0x16, 0xc3, 0xf5,
+                    0xba, 0x71, 0x4b, 0x27, 0x12, 0xe0, 0x48, 0x49,
+                    0x13, 0x79, 0xa5, 0x00, 0x21, 0x19, 0x98, 0xa8 },
+       .b_public = (u8[32]){ 0x63, 0xaa, 0x40, 0xc6, 0xe3, 0x83, 0x46, 0xc5,
+                   0xca, 0xf2, 0x3a, 0x6d, 0xf0, 0xa5, 0xe6, 0xc8,
+                   0x08, 0x89, 0xa0, 0x86, 0x47, 0xe5, 0x51, 0xb3,
+                   0x56, 0x34, 0x49, 0xbe, 0xfc, 0xfc, 0x97, 0x33 },
+       .expected_ss = (u8[32]){ 0xb1, 0xa7, 0x07, 0x51, 0x94, 0x95, 0xff, 0xff,
+                   0xb2, 0x98, 0xff, 0x94, 0x17, 0x16, 0xb0, 0x6d,
+                   0xfa, 0xb8, 0x7c, 0xf8, 0xd9, 0x11, 0x23, 0xfe,
+                   0x2b, 0xe9, 0xa2, 0x33, 0xdd, 0xa2, 0x22, 0x12 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key on twist */
+{
+       .secret = (u8[32]){ 0xb0, 0x5b, 0xfd, 0x32, 0xe5, 0x53, 0x25, 0xd9,
+                    0xfd, 0x64, 0x8c, 0xb3, 0x02, 0x84, 0x80, 0x39,
+                    0x00, 0x0b, 0x39, 0x0e, 0x44, 0xd5, 0x21, 0xe5,
+                    0x8a, 0xab, 0x3b, 0x29, 0xa6, 0x96, 0x0b, 0xa8 },
+       .b_public = (u8[32]){ 0x0f, 0x83, 0xc3, 0x6f, 0xde, 0xd9, 0xd3, 0x2f,
+                   0xad, 0xf4, 0xef, 0xa3, 0xae, 0x93, 0xa9, 0x0b,
+                   0xb5, 0xcf, 0xa6, 0x68, 0x93, 0xbc, 0x41, 0x2c,
+                   0x43, 0xfa, 0x72, 0x87, 0xdb, 0xb9, 0x97, 0x79 },
+       .expected_ss = (u8[32]){ 0x67, 0xdd, 0x4a, 0x6e, 0x16, 0x55, 0x33, 0x53,
+                   0x4c, 0x0e, 0x3f, 0x17, 0x2e, 0x4a, 0xb8, 0x57,
+                   0x6b, 0xca, 0x92, 0x3a, 0x5f, 0x07, 0xb2, 0xc0,
+                   0x69, 0xb4, 0xc3, 0x10, 0xff, 0x2e, 0x93, 0x5b },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key on twist */
+{
+       .secret = (u8[32]){ 0x70, 0xe3, 0x4b, 0xcb, 0xe1, 0xf4, 0x7f, 0xbc,
+                    0x0f, 0xdd, 0xfd, 0x7c, 0x1e, 0x1a, 0xa5, 0x3d,
+                    0x57, 0xbf, 0xe0, 0xf6, 0x6d, 0x24, 0x30, 0x67,
+                    0xb4, 0x24, 0xbb, 0x62, 0x10, 0xbe, 0xd1, 0x9c },
+       .b_public = (u8[32]){ 0x0b, 0x82, 0x11, 0xa2, 0xb6, 0x04, 0x90, 0x97,
+                   0xf6, 0x87, 0x1c, 0x6c, 0x05, 0x2d, 0x3c, 0x5f,
+                   0xc1, 0xba, 0x17, 0xda, 0x9e, 0x32, 0xae, 0x45,
+                   0x84, 0x03, 0xb0, 0x5b, 0xb2, 0x83, 0x09, 0x2a },
+       .expected_ss = (u8[32]){ 0x4a, 0x06, 0x38, 0xcf, 0xaa, 0x9e, 0xf1, 0x93,
+                   0x3b, 0x47, 0xf8, 0x93, 0x92, 0x96, 0xa6, 0xb2,
+                   0x5b, 0xe5, 0x41, 0xef, 0x7f, 0x70, 0xe8, 0x44,
+                   0xc0, 0xbc, 0xc0, 0x0b, 0x13, 0x4d, 0xe6, 0x4a },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key on twist */
+{
+       .secret = (u8[32]){ 0x68, 0xc1, 0xf3, 0xa6, 0x53, 0xa4, 0xcd, 0xb1,
+                    0xd3, 0x7b, 0xba, 0x94, 0x73, 0x8f, 0x8b, 0x95,
+                    0x7a, 0x57, 0xbe, 0xb2, 0x4d, 0x64, 0x6e, 0x99,
+                    0x4d, 0xc2, 0x9a, 0x27, 0x6a, 0xad, 0x45, 0x8d },
+       .b_public = (u8[32]){ 0x34, 0x3a, 0xc2, 0x0a, 0x3b, 0x9c, 0x6a, 0x27,
+                   0xb1, 0x00, 0x81, 0x76, 0x50, 0x9a, 0xd3, 0x07,
+                   0x35, 0x85, 0x6e, 0xc1, 0xc8, 0xd8, 0xfc, 0xae,
+                   0x13, 0x91, 0x2d, 0x08, 0xd1, 0x52, 0xf4, 0x6c },
+       .expected_ss = (u8[32]){ 0x39, 0x94, 0x91, 0xfc, 0xe8, 0xdf, 0xab, 0x73,
+                   0xb4, 0xf9, 0xf6, 0x11, 0xde, 0x8e, 0xa0, 0xb2,
+                   0x7b, 0x28, 0xf8, 0x59, 0x94, 0x25, 0x0b, 0x0f,
+                   0x47, 0x5d, 0x58, 0x5d, 0x04, 0x2a, 0xc2, 0x07 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key on twist */
+{
+       .secret = (u8[32]){ 0xd8, 0x77, 0xb2, 0x6d, 0x06, 0xdf, 0xf9, 0xd9,
+                    0xf7, 0xfd, 0x4c, 0x5b, 0x37, 0x69, 0xf8, 0xcd,
+                    0xd5, 0xb3, 0x05, 0x16, 0xa5, 0xab, 0x80, 0x6b,
+                    0xe3, 0x24, 0xff, 0x3e, 0xb6, 0x9e, 0xa0, 0xb2 },
+       .b_public = (u8[32]){ 0xfa, 0x69, 0x5f, 0xc7, 0xbe, 0x8d, 0x1b, 0xe5,
+                   0xbf, 0x70, 0x48, 0x98, 0xf3, 0x88, 0xc4, 0x52,
+                   0xba, 0xfd, 0xd3, 0xb8, 0xea, 0xe8, 0x05, 0xf8,
+                   0x68, 0x1a, 0x8d, 0x15, 0xc2, 0xd4, 0xe1, 0x42 },
+       .expected_ss = (u8[32]){ 0x2c, 0x4f, 0xe1, 0x1d, 0x49, 0x0a, 0x53, 0x86,
+                   0x17, 0x76, 0xb1, 0x3b, 0x43, 0x54, 0xab, 0xd4,
+                   0xcf, 0x5a, 0x97, 0x69, 0x9d, 0xb6, 0xe6, 0xc6,
+                   0x8c, 0x16, 0x26, 0xd0, 0x76, 0x62, 0xf7, 0x58 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case on twist */
+{
+       .secret = (u8[32]){ 0x38, 0xdd, 0xe9, 0xf3, 0xe7, 0xb7, 0x99, 0x04,
+                    0x5f, 0x9a, 0xc3, 0x79, 0x3d, 0x4a, 0x92, 0x77,
+                    0xda, 0xde, 0xad, 0xc4, 0x1b, 0xec, 0x02, 0x90,
+                    0xf8, 0x1f, 0x74, 0x4f, 0x73, 0x77, 0x5f, 0x84 },
+       .b_public = (u8[32]){ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .expected_ss = (u8[32]){ 0x9a, 0x2c, 0xfe, 0x84, 0xff, 0x9c, 0x4a, 0x97,
+                   0x39, 0x62, 0x5c, 0xae, 0x4a, 0x3b, 0x82, 0xa9,
+                   0x06, 0x87, 0x7a, 0x44, 0x19, 0x46, 0xf8, 0xd7,
+                   0xb3, 0xd7, 0x95, 0xfe, 0x8f, 0x5d, 0x16, 0x39 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case on twist */
+{
+       .secret = (u8[32]){ 0x98, 0x57, 0xa9, 0x14, 0xe3, 0xc2, 0x90, 0x36,
+                    0xfd, 0x9a, 0x44, 0x2b, 0xa5, 0x26, 0xb5, 0xcd,
+                    0xcd, 0xf2, 0x82, 0x16, 0x15, 0x3e, 0x63, 0x6c,
+                    0x10, 0x67, 0x7a, 0xca, 0xb6, 0xbd, 0x6a, 0xa5 },
+       .b_public = (u8[32]){ 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .expected_ss = (u8[32]){ 0x4d, 0xa4, 0xe0, 0xaa, 0x07, 0x2c, 0x23, 0x2e,
+                   0xe2, 0xf0, 0xfa, 0x4e, 0x51, 0x9a, 0xe5, 0x0b,
+                   0x52, 0xc1, 0xed, 0xd0, 0x8a, 0x53, 0x4d, 0x4e,
+                   0xf3, 0x46, 0xc2, 0xe1, 0x06, 0xd2, 0x1d, 0x60 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case on twist */
+{
+       .secret = (u8[32]){ 0x48, 0xe2, 0x13, 0x0d, 0x72, 0x33, 0x05, 0xed,
+                    0x05, 0xe6, 0xe5, 0x89, 0x4d, 0x39, 0x8a, 0x5e,
+                    0x33, 0x36, 0x7a, 0x8c, 0x6a, 0xac, 0x8f, 0xcd,
+                    0xf0, 0xa8, 0x8e, 0x4b, 0x42, 0x82, 0x0d, 0xb7 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xf8, 0xff,
+                   0xff, 0x1f, 0x00, 0x00, 0xc0, 0xff, 0xff, 0xff,
+                   0x00, 0x00, 0x00, 0xfe, 0xff, 0xff, 0x07, 0x00,
+                   0x00, 0xf0, 0xff, 0xff, 0x3f, 0x00, 0x00, 0x00 },
+       .expected_ss = (u8[32]){ 0x9e, 0xd1, 0x0c, 0x53, 0x74, 0x7f, 0x64, 0x7f,
+                   0x82, 0xf4, 0x51, 0x25, 0xd3, 0xde, 0x15, 0xa1,
+                   0xe6, 0xb8, 0x24, 0x49, 0x6a, 0xb4, 0x04, 0x10,
+                   0xff, 0xcc, 0x3c, 0xfe, 0x95, 0x76, 0x0f, 0x3b },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case on twist */
+{
+       .secret = (u8[32]){ 0x28, 0xf4, 0x10, 0x11, 0x69, 0x18, 0x51, 0xb3,
+                    0xa6, 0x2b, 0x64, 0x15, 0x53, 0xb3, 0x0d, 0x0d,
+                    0xfd, 0xdc, 0xb8, 0xff, 0xfc, 0xf5, 0x37, 0x00,
+                    0xa7, 0xbe, 0x2f, 0x6a, 0x87, 0x2e, 0x9f, 0xb0 },
+       .b_public = (u8[32]){ 0x00, 0x00, 0x00, 0xfc, 0xff, 0xff, 0x07, 0x00,
+                   0x00, 0xe0, 0xff, 0xff, 0x3f, 0x00, 0x00, 0x00,
+                   0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0xf8, 0xff,
+                   0xff, 0x0f, 0x00, 0x00, 0xc0, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0xcf, 0x72, 0xb4, 0xaa, 0x6a, 0xa1, 0xc9, 0xf8,
+                   0x94, 0xf4, 0x16, 0x5b, 0x86, 0x10, 0x9a, 0xa4,
+                   0x68, 0x51, 0x76, 0x48, 0xe1, 0xf0, 0xcc, 0x70,
+                   0xe1, 0xab, 0x08, 0x46, 0x01, 0x76, 0x50, 0x6b },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case on twist */
+{
+       .secret = (u8[32]){ 0x18, 0xa9, 0x3b, 0x64, 0x99, 0xb9, 0xf6, 0xb3,
+                    0x22, 0x5c, 0xa0, 0x2f, 0xef, 0x41, 0x0e, 0x0a,
+                    0xde, 0xc2, 0x35, 0x32, 0x32, 0x1d, 0x2d, 0x8e,
+                    0xf1, 0xa6, 0xd6, 0x02, 0xa8, 0xc6, 0x5b, 0x83 },
+       .b_public = (u8[32]){ 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
+                   0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
+                   0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
+                   0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0x5d, 0x50, 0xb6, 0x28, 0x36, 0xbb, 0x69, 0x57,
+                   0x94, 0x10, 0x38, 0x6c, 0xf7, 0xbb, 0x81, 0x1c,
+                   0x14, 0xbf, 0x85, 0xb1, 0xc7, 0xb1, 0x7e, 0x59,
+                   0x24, 0xc7, 0xff, 0xea, 0x91, 0xef, 0x9e, 0x12 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case on twist */
+{
+       .secret = (u8[32]){ 0xc0, 0x1d, 0x13, 0x05, 0xa1, 0x33, 0x8a, 0x1f,
+                    0xca, 0xc2, 0xba, 0x7e, 0x2e, 0x03, 0x2b, 0x42,
+                    0x7e, 0x0b, 0x04, 0x90, 0x31, 0x65, 0xac, 0xa9,
+                    0x57, 0xd8, 0xd0, 0x55, 0x3d, 0x87, 0x17, 0xb0 },
+       .b_public = (u8[32]){ 0xea, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0x19, 0x23, 0x0e, 0xb1, 0x48, 0xd5, 0xd6, 0x7c,
+                   0x3c, 0x22, 0xab, 0x1d, 0xae, 0xff, 0x80, 0xa5,
+                   0x7e, 0xae, 0x42, 0x65, 0xce, 0x28, 0x72, 0x65,
+                   0x7b, 0x2c, 0x80, 0x99, 0xfc, 0x69, 0x8e, 0x50 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for public key */
+{
+       .secret = (u8[32]){ 0x38, 0x6f, 0x7f, 0x16, 0xc5, 0x07, 0x31, 0xd6,
+                    0x4f, 0x82, 0xe6, 0xa1, 0x70, 0xb1, 0x42, 0xa4,
+                    0xe3, 0x4f, 0x31, 0xfd, 0x77, 0x68, 0xfc, 0xb8,
+                    0x90, 0x29, 0x25, 0xe7, 0xd1, 0xe2, 0x1a, 0xbe },
+       .b_public = (u8[32]){ 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .expected_ss = (u8[32]){ 0x0f, 0xca, 0xb5, 0xd8, 0x42, 0xa0, 0x78, 0xd7,
+                   0xa7, 0x1f, 0xc5, 0x9b, 0x57, 0xbf, 0xb4, 0xca,
+                   0x0b, 0xe6, 0x87, 0x3b, 0x49, 0xdc, 0xdb, 0x9f,
+                   0x44, 0xe1, 0x4a, 0xe8, 0xfb, 0xdf, 0xa5, 0x42 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for public key */
+{
+       .secret = (u8[32]){ 0xe0, 0x23, 0xa2, 0x89, 0xbd, 0x5e, 0x90, 0xfa,
+                    0x28, 0x04, 0xdd, 0xc0, 0x19, 0xa0, 0x5e, 0xf3,
+                    0xe7, 0x9d, 0x43, 0x4b, 0xb6, 0xea, 0x2f, 0x52,
+                    0x2e, 0xcb, 0x64, 0x3a, 0x75, 0x29, 0x6e, 0x95 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
+                   0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
+                   0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
+                   0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 },
+       .expected_ss = (u8[32]){ 0x54, 0xce, 0x8f, 0x22, 0x75, 0xc0, 0x77, 0xe3,
+                   0xb1, 0x30, 0x6a, 0x39, 0x39, 0xc5, 0xe0, 0x3e,
+                   0xef, 0x6b, 0xbb, 0x88, 0x06, 0x05, 0x44, 0x75,
+                   0x8d, 0x9f, 0xef, 0x59, 0xb0, 0xbc, 0x3e, 0x4f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for public key */
+{
+       .secret = (u8[32]){ 0x68, 0xf0, 0x10, 0xd6, 0x2e, 0xe8, 0xd9, 0x26,
+                    0x05, 0x3a, 0x36, 0x1c, 0x3a, 0x75, 0xc6, 0xea,
+                    0x4e, 0xbd, 0xc8, 0x60, 0x6a, 0xb2, 0x85, 0x00,
+                    0x3a, 0x6f, 0x8f, 0x40, 0x76, 0xb0, 0x1e, 0x83 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03 },
+       .expected_ss = (u8[32]){ 0xf1, 0x36, 0x77, 0x5c, 0x5b, 0xeb, 0x0a, 0xf8,
+                   0x11, 0x0a, 0xf1, 0x0b, 0x20, 0x37, 0x23, 0x32,
+                   0x04, 0x3c, 0xab, 0x75, 0x24, 0x19, 0x67, 0x87,
+                   0x75, 0xa2, 0x23, 0xdf, 0x57, 0xc9, 0xd3, 0x0d },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for public key */
+{
+       .secret = (u8[32]){ 0x58, 0xeb, 0xcb, 0x35, 0xb0, 0xf8, 0x84, 0x5c,
+                    0xaf, 0x1e, 0xc6, 0x30, 0xf9, 0x65, 0x76, 0xb6,
+                    0x2c, 0x4b, 0x7b, 0x6c, 0x36, 0xb2, 0x9d, 0xeb,
+                    0x2c, 0xb0, 0x08, 0x46, 0x51, 0x75, 0x5c, 0x96 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xfb, 0xff, 0xff, 0xfb, 0xff,
+                   0xff, 0xdf, 0xff, 0xff, 0xdf, 0xff, 0xff, 0xff,
+                   0xfe, 0xff, 0xff, 0xfe, 0xff, 0xff, 0xf7, 0xff,
+                   0xff, 0xf7, 0xff, 0xff, 0xbf, 0xff, 0xff, 0x3f },
+       .expected_ss = (u8[32]){ 0xbf, 0x9a, 0xff, 0xd0, 0x6b, 0x84, 0x40, 0x85,
+                   0x58, 0x64, 0x60, 0x96, 0x2e, 0xf2, 0x14, 0x6f,
+                   0xf3, 0xd4, 0x53, 0x3d, 0x94, 0x44, 0xaa, 0xb0,
+                   0x06, 0xeb, 0x88, 0xcc, 0x30, 0x54, 0x40, 0x7d },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for public key */
+{
+       .secret = (u8[32]){ 0x18, 0x8c, 0x4b, 0xc5, 0xb9, 0xc4, 0x4b, 0x38,
+                    0xbb, 0x65, 0x8b, 0x9b, 0x2a, 0xe8, 0x2d, 0x5b,
+                    0x01, 0x01, 0x5e, 0x09, 0x31, 0x84, 0xb1, 0x7c,
+                    0xb7, 0x86, 0x35, 0x03, 0xa7, 0x83, 0xe1, 0xbb },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f },
+       .expected_ss = (u8[32]){ 0xd4, 0x80, 0xde, 0x04, 0xf6, 0x99, 0xcb, 0x3b,
+                   0xe0, 0x68, 0x4a, 0x9c, 0xc2, 0xe3, 0x12, 0x81,
+                   0xea, 0x0b, 0xc5, 0xa9, 0xdc, 0xc1, 0x57, 0xd3,
+                   0xd2, 0x01, 0x58, 0xd4, 0x6c, 0xa5, 0x24, 0x6d },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for public key */
+{
+       .secret = (u8[32]){ 0xe0, 0x6c, 0x11, 0xbb, 0x2e, 0x13, 0xce, 0x3d,
+                    0xc7, 0x67, 0x3f, 0x67, 0xf5, 0x48, 0x22, 0x42,
+                    0x90, 0x94, 0x23, 0xa9, 0xae, 0x95, 0xee, 0x98,
+                    0x6a, 0x98, 0x8d, 0x98, 0xfa, 0xee, 0x23, 0xa2 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0x7f,
+                   0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0x7f,
+                   0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0x7f,
+                   0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0x4c, 0x44, 0x01, 0xcc, 0xe6, 0xb5, 0x1e, 0x4c,
+                   0xb1, 0x8f, 0x27, 0x90, 0x24, 0x6c, 0x9b, 0xf9,
+                   0x14, 0xdb, 0x66, 0x77, 0x50, 0xa1, 0xcb, 0x89,
+                   0x06, 0x90, 0x92, 0xaf, 0x07, 0x29, 0x22, 0x76 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for public key */
+{
+       .secret = (u8[32]){ 0xc0, 0x65, 0x8c, 0x46, 0xdd, 0xe1, 0x81, 0x29,
+                    0x29, 0x38, 0x77, 0x53, 0x5b, 0x11, 0x62, 0xb6,
+                    0xf9, 0xf5, 0x41, 0x4a, 0x23, 0xcf, 0x4d, 0x2c,
+                    0xbc, 0x14, 0x0a, 0x4d, 0x99, 0xda, 0x2b, 0x8f },
+       .b_public = (u8[32]){ 0xeb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0x57, 0x8b, 0xa8, 0xcc, 0x2d, 0xbd, 0xc5, 0x75,
+                   0xaf, 0xcf, 0x9d, 0xf2, 0xb3, 0xee, 0x61, 0x89,
+                   0xf5, 0x33, 0x7d, 0x68, 0x54, 0xc7, 0x9b, 0x4c,
+                   0xe1, 0x65, 0xea, 0x12, 0x29, 0x3b, 0x3a, 0x0f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0xf0, 0x1e, 0x48, 0xda, 0xfa, 0xc9, 0xd7, 0xbc,
+                    0xf5, 0x89, 0xcb, 0xc3, 0x82, 0xc8, 0x78, 0xd1,
+                    0x8b, 0xda, 0x35, 0x50, 0x58, 0x9f, 0xfb, 0x5d,
+                    0x50, 0xb5, 0x23, 0xbe, 0xbe, 0x32, 0x9d, 0xae },
+       .b_public = (u8[32]){ 0xef, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0xbd, 0x36, 0xa0, 0x79, 0x0e, 0xb8, 0x83, 0x09,
+                   0x8c, 0x98, 0x8b, 0x21, 0x78, 0x67, 0x73, 0xde,
+                   0x0b, 0x3a, 0x4d, 0xf1, 0x62, 0x28, 0x2c, 0xf1,
+                   0x10, 0xde, 0x18, 0xdd, 0x48, 0x4c, 0xe7, 0x4b },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x28, 0x87, 0x96, 0xbc, 0x5a, 0xff, 0x4b, 0x81,
+                    0xa3, 0x75, 0x01, 0x75, 0x7b, 0xc0, 0x75, 0x3a,
+                    0x3c, 0x21, 0x96, 0x47, 0x90, 0xd3, 0x86, 0x99,
+                    0x30, 0x8d, 0xeb, 0xc1, 0x7a, 0x6e, 0xaf, 0x8d },
+       .b_public = (u8[32]){ 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0xb4, 0xe0, 0xdd, 0x76, 0xda, 0x7b, 0x07, 0x17,
+                   0x28, 0xb6, 0x1f, 0x85, 0x67, 0x71, 0xaa, 0x35,
+                   0x6e, 0x57, 0xed, 0xa7, 0x8a, 0x5b, 0x16, 0x55,
+                   0xcc, 0x38, 0x20, 0xfb, 0x5f, 0x85, 0x4c, 0x5c },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x98, 0xdf, 0x84, 0x5f, 0x66, 0x51, 0xbf, 0x11,
+                    0x38, 0x22, 0x1f, 0x11, 0x90, 0x41, 0xf7, 0x2b,
+                    0x6d, 0xbc, 0x3c, 0x4a, 0xce, 0x71, 0x43, 0xd9,
+                    0x9f, 0xd5, 0x5a, 0xd8, 0x67, 0x48, 0x0d, 0xa8 },
+       .b_public = (u8[32]){ 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0x6f, 0xdf, 0x6c, 0x37, 0x61, 0x1d, 0xbd, 0x53,
+                   0x04, 0xdc, 0x0f, 0x2e, 0xb7, 0xc9, 0x51, 0x7e,
+                   0xb3, 0xc5, 0x0e, 0x12, 0xfd, 0x05, 0x0a, 0xc6,
+                   0xde, 0xc2, 0x70, 0x71, 0xd4, 0xbf, 0xc0, 0x34 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0xf0, 0x94, 0x98, 0xe4, 0x6f, 0x02, 0xf8, 0x78,
+                    0x82, 0x9e, 0x78, 0xb8, 0x03, 0xd3, 0x16, 0xa2,
+                    0xed, 0x69, 0x5d, 0x04, 0x98, 0xa0, 0x8a, 0xbd,
+                    0xf8, 0x27, 0x69, 0x30, 0xe2, 0x4e, 0xdc, 0xb0 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .expected_ss = (u8[32]){ 0x4c, 0x8f, 0xc4, 0xb1, 0xc6, 0xab, 0x88, 0xfb,
+                   0x21, 0xf1, 0x8f, 0x6d, 0x4c, 0x81, 0x02, 0x40,
+                   0xd4, 0xe9, 0x46, 0x51, 0xba, 0x44, 0xf7, 0xa2,
+                   0xc8, 0x63, 0xce, 0xc7, 0xdc, 0x56, 0x60, 0x2d },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x18, 0x13, 0xc1, 0x0a, 0x5c, 0x7f, 0x21, 0xf9,
+                    0x6e, 0x17, 0xf2, 0x88, 0xc0, 0xcc, 0x37, 0x60,
+                    0x7c, 0x04, 0xc5, 0xf5, 0xae, 0xa2, 0xdb, 0x13,
+                    0x4f, 0x9e, 0x2f, 0xfc, 0x66, 0xbd, 0x9d, 0xb8 },
+       .b_public = (u8[32]){ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80 },
+       .expected_ss = (u8[32]){ 0x1c, 0xd0, 0xb2, 0x82, 0x67, 0xdc, 0x54, 0x1c,
+                   0x64, 0x2d, 0x6d, 0x7d, 0xca, 0x44, 0xa8, 0xb3,
+                   0x8a, 0x63, 0x73, 0x6e, 0xef, 0x5c, 0x4e, 0x65,
+                   0x01, 0xff, 0xbb, 0xb1, 0x78, 0x0c, 0x03, 0x3c },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x78, 0x57, 0xfb, 0x80, 0x86, 0x53, 0x64, 0x5a,
+                    0x0b, 0xeb, 0x13, 0x8a, 0x64, 0xf5, 0xf4, 0xd7,
+                    0x33, 0xa4, 0x5e, 0xa8, 0x4c, 0x3c, 0xda, 0x11,
+                    0xa9, 0xc0, 0x6f, 0x7e, 0x71, 0x39, 0x14, 0x9e },
+       .b_public = (u8[32]){ 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80 },
+       .expected_ss = (u8[32]){ 0x87, 0x55, 0xbe, 0x01, 0xc6, 0x0a, 0x7e, 0x82,
+                   0x5c, 0xff, 0x3e, 0x0e, 0x78, 0xcb, 0x3a, 0xa4,
+                   0x33, 0x38, 0x61, 0x51, 0x6a, 0xa5, 0x9b, 0x1c,
+                   0x51, 0xa8, 0xb2, 0xa5, 0x43, 0xdf, 0xa8, 0x22 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0xe0, 0x3a, 0xa8, 0x42, 0xe2, 0xab, 0xc5, 0x6e,
+                    0x81, 0xe8, 0x7b, 0x8b, 0x9f, 0x41, 0x7b, 0x2a,
+                    0x1e, 0x59, 0x13, 0xc7, 0x23, 0xee, 0xd2, 0x8d,
+                    0x75, 0x2f, 0x8d, 0x47, 0xa5, 0x9f, 0x49, 0x8f },
+       .b_public = (u8[32]){ 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80 },
+       .expected_ss = (u8[32]){ 0x54, 0xc9, 0xa1, 0xed, 0x95, 0xe5, 0x46, 0xd2,
+                   0x78, 0x22, 0xa3, 0x60, 0x93, 0x1d, 0xda, 0x60,
+                   0xa1, 0xdf, 0x04, 0x9d, 0xa6, 0xf9, 0x04, 0x25,
+                   0x3c, 0x06, 0x12, 0xbb, 0xdc, 0x08, 0x74, 0x76 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0xf8, 0xf7, 0x07, 0xb7, 0x99, 0x9b, 0x18, 0xcb,
+                    0x0d, 0x6b, 0x96, 0x12, 0x4f, 0x20, 0x45, 0x97,
+                    0x2c, 0xa2, 0x74, 0xbf, 0xc1, 0x54, 0xad, 0x0c,
+                    0x87, 0x03, 0x8c, 0x24, 0xc6, 0xd0, 0xd4, 0xb2 },
+       .b_public = (u8[32]){ 0xda, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0xcc, 0x1f, 0x40, 0xd7, 0x43, 0xcd, 0xc2, 0x23,
+                   0x0e, 0x10, 0x43, 0xda, 0xba, 0x8b, 0x75, 0xe8,
+                   0x10, 0xf1, 0xfb, 0xab, 0x7f, 0x25, 0x52, 0x69,
+                   0xbd, 0x9e, 0xbb, 0x29, 0xe6, 0xbf, 0x49, 0x4f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0xa0, 0x34, 0xf6, 0x84, 0xfa, 0x63, 0x1e, 0x1a,
+                    0x34, 0x81, 0x18, 0xc1, 0xce, 0x4c, 0x98, 0x23,
+                    0x1f, 0x2d, 0x9e, 0xec, 0x9b, 0xa5, 0x36, 0x5b,
+                    0x4a, 0x05, 0xd6, 0x9a, 0x78, 0x5b, 0x07, 0x96 },
+       .b_public = (u8[32]){ 0xdb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0x54, 0x99, 0x8e, 0xe4, 0x3a, 0x5b, 0x00, 0x7b,
+                   0xf4, 0x99, 0xf0, 0x78, 0xe7, 0x36, 0x52, 0x44,
+                   0x00, 0xa8, 0xb5, 0xc7, 0xe9, 0xb9, 0xb4, 0x37,
+                   0x71, 0x74, 0x8c, 0x7c, 0xdf, 0x88, 0x04, 0x12 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x30, 0xb6, 0xc6, 0xa0, 0xf2, 0xff, 0xa6, 0x80,
+                    0x76, 0x8f, 0x99, 0x2b, 0xa8, 0x9e, 0x15, 0x2d,
+                    0x5b, 0xc9, 0x89, 0x3d, 0x38, 0xc9, 0x11, 0x9b,
+                    0xe4, 0xf7, 0x67, 0xbf, 0xab, 0x6e, 0x0c, 0xa5 },
+       .b_public = (u8[32]){ 0xdc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0xea, 0xd9, 0xb3, 0x8e, 0xfd, 0xd7, 0x23, 0x63,
+                   0x79, 0x34, 0xe5, 0x5a, 0xb7, 0x17, 0xa7, 0xae,
+                   0x09, 0xeb, 0x86, 0xa2, 0x1d, 0xc3, 0x6a, 0x3f,
+                   0xee, 0xb8, 0x8b, 0x75, 0x9e, 0x39, 0x1e, 0x09 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x90, 0x1b, 0x9d, 0xcf, 0x88, 0x1e, 0x01, 0xe0,
+                    0x27, 0x57, 0x50, 0x35, 0xd4, 0x0b, 0x43, 0xbd,
+                    0xc1, 0xc5, 0x24, 0x2e, 0x03, 0x08, 0x47, 0x49,
+                    0x5b, 0x0c, 0x72, 0x86, 0x46, 0x9b, 0x65, 0x91 },
+       .b_public = (u8[32]){ 0xea, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0x60, 0x2f, 0xf4, 0x07, 0x89, 0xb5, 0x4b, 0x41,
+                   0x80, 0x59, 0x15, 0xfe, 0x2a, 0x62, 0x21, 0xf0,
+                   0x7a, 0x50, 0xff, 0xc2, 0xc3, 0xfc, 0x94, 0xcf,
+                   0x61, 0xf1, 0x3d, 0x79, 0x04, 0xe8, 0x8e, 0x0e },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x80, 0x46, 0x67, 0x7c, 0x28, 0xfd, 0x82, 0xc9,
+                    0xa1, 0xbd, 0xb7, 0x1a, 0x1a, 0x1a, 0x34, 0xfa,
+                    0xba, 0x12, 0x25, 0xe2, 0x50, 0x7f, 0xe3, 0xf5,
+                    0x4d, 0x10, 0xbd, 0x5b, 0x0d, 0x86, 0x5f, 0x8e },
+       .b_public = (u8[32]){ 0xeb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0xe0, 0x0a, 0xe8, 0xb1, 0x43, 0x47, 0x12, 0x47,
+                   0xba, 0x24, 0xf1, 0x2c, 0x88, 0x55, 0x36, 0xc3,
+                   0xcb, 0x98, 0x1b, 0x58, 0xe1, 0xe5, 0x6b, 0x2b,
+                   0xaf, 0x35, 0xc1, 0x2a, 0xe1, 0xf7, 0x9c, 0x26 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x60, 0x2f, 0x7e, 0x2f, 0x68, 0xa8, 0x46, 0xb8,
+                    0x2c, 0xc2, 0x69, 0xb1, 0xd4, 0x8e, 0x93, 0x98,
+                    0x86, 0xae, 0x54, 0xfd, 0x63, 0x6c, 0x1f, 0xe0,
+                    0x74, 0xd7, 0x10, 0x12, 0x7d, 0x47, 0x24, 0x91 },
+       .b_public = (u8[32]){ 0xef, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0x98, 0xcb, 0x9b, 0x50, 0xdd, 0x3f, 0xc2, 0xb0,
+                   0xd4, 0xf2, 0xd2, 0xbf, 0x7c, 0x5c, 0xfd, 0xd1,
+                   0x0c, 0x8f, 0xcd, 0x31, 0xfc, 0x40, 0xaf, 0x1a,
+                   0xd4, 0x4f, 0x47, 0xc1, 0x31, 0x37, 0x63, 0x62 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x60, 0x88, 0x7b, 0x3d, 0xc7, 0x24, 0x43, 0x02,
+                    0x6e, 0xbe, 0xdb, 0xbb, 0xb7, 0x06, 0x65, 0xf4,
+                    0x2b, 0x87, 0xad, 0xd1, 0x44, 0x0e, 0x77, 0x68,
+                    0xfb, 0xd7, 0xe8, 0xe2, 0xce, 0x5f, 0x63, 0x9d },
+       .b_public = (u8[32]){ 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0x38, 0xd6, 0x30, 0x4c, 0x4a, 0x7e, 0x6d, 0x9f,
+                   0x79, 0x59, 0x33, 0x4f, 0xb5, 0x24, 0x5b, 0xd2,
+                   0xc7, 0x54, 0x52, 0x5d, 0x4c, 0x91, 0xdb, 0x95,
+                   0x02, 0x06, 0x92, 0x62, 0x34, 0xc1, 0xf6, 0x33 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0x78, 0xd3, 0x1d, 0xfa, 0x85, 0x44, 0x97, 0xd7,
+                    0x2d, 0x8d, 0xef, 0x8a, 0x1b, 0x7f, 0xb0, 0x06,
+                    0xce, 0xc2, 0xd8, 0xc4, 0x92, 0x46, 0x47, 0xc9,
+                    0x38, 0x14, 0xae, 0x56, 0xfa, 0xed, 0xa4, 0x95 },
+       .b_public = (u8[32]){ 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0x78, 0x6c, 0xd5, 0x49, 0x96, 0xf0, 0x14, 0xa5,
+                   0xa0, 0x31, 0xec, 0x14, 0xdb, 0x81, 0x2e, 0xd0,
+                   0x83, 0x55, 0x06, 0x1f, 0xdb, 0x5d, 0xe6, 0x80,
+                   0xa8, 0x00, 0xac, 0x52, 0x1f, 0x31, 0x8e, 0x23 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - public key >= p */
+{
+       .secret = (u8[32]){ 0xc0, 0x4c, 0x5b, 0xae, 0xfa, 0x83, 0x02, 0xdd,
+                    0xde, 0xd6, 0xa4, 0xbb, 0x95, 0x77, 0x61, 0xb4,
+                    0xeb, 0x97, 0xae, 0xfa, 0x4f, 0xc3, 0xb8, 0x04,
+                    0x30, 0x85, 0xf9, 0x6a, 0x56, 0x59, 0xb3, 0xa5 },
+       .b_public = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+       .expected_ss = (u8[32]){ 0x29, 0xae, 0x8b, 0xc7, 0x3e, 0x9b, 0x10, 0xa0,
+                   0x8b, 0x4f, 0x68, 0x1c, 0x43, 0xc3, 0xe0, 0xac,
+                   0x1a, 0x17, 0x1d, 0x31, 0xb3, 0x8f, 0x1a, 0x48,
+                   0xef, 0xba, 0x29, 0xae, 0x63, 0x9e, 0xa1, 0x34 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - RFC 7748 */
+{
+       .secret = (u8[32]){ 0xa0, 0x46, 0xe3, 0x6b, 0xf0, 0x52, 0x7c, 0x9d,
+                    0x3b, 0x16, 0x15, 0x4b, 0x82, 0x46, 0x5e, 0xdd,
+                    0x62, 0x14, 0x4c, 0x0a, 0xc1, 0xfc, 0x5a, 0x18,
+                    0x50, 0x6a, 0x22, 0x44, 0xba, 0x44, 0x9a, 0x44 },
+       .b_public = (u8[32]){ 0xe6, 0xdb, 0x68, 0x67, 0x58, 0x30, 0x30, 0xdb,
+                   0x35, 0x94, 0xc1, 0xa4, 0x24, 0xb1, 0x5f, 0x7c,
+                   0x72, 0x66, 0x24, 0xec, 0x26, 0xb3, 0x35, 0x3b,
+                   0x10, 0xa9, 0x03, 0xa6, 0xd0, 0xab, 0x1c, 0x4c },
+       .expected_ss = (u8[32]){ 0xc3, 0xda, 0x55, 0x37, 0x9d, 0xe9, 0xc6, 0x90,
+                   0x8e, 0x94, 0xea, 0x4d, 0xf2, 0x8d, 0x08, 0x4f,
+                   0x32, 0xec, 0xcf, 0x03, 0x49, 0x1c, 0x71, 0xf7,
+                   0x54, 0xb4, 0x07, 0x55, 0x77, 0xa2, 0x85, 0x52 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - RFC 7748 */
+{
+       .secret = (u8[32]){ 0x48, 0x66, 0xe9, 0xd4, 0xd1, 0xb4, 0x67, 0x3c,
+                    0x5a, 0xd2, 0x26, 0x91, 0x95, 0x7d, 0x6a, 0xf5,
+                    0xc1, 0x1b, 0x64, 0x21, 0xe0, 0xea, 0x01, 0xd4,
+                    0x2c, 0xa4, 0x16, 0x9e, 0x79, 0x18, 0xba, 0x4d },
+       .b_public = (u8[32]){ 0xe5, 0x21, 0x0f, 0x12, 0x78, 0x68, 0x11, 0xd3,
+                   0xf4, 0xb7, 0x95, 0x9d, 0x05, 0x38, 0xae, 0x2c,
+                   0x31, 0xdb, 0xe7, 0x10, 0x6f, 0xc0, 0x3c, 0x3e,
+                   0xfc, 0x4c, 0xd5, 0x49, 0xc7, 0x15, 0xa4, 0x13 },
+       .expected_ss = (u8[32]){ 0x95, 0xcb, 0xde, 0x94, 0x76, 0xe8, 0x90, 0x7d,
+                   0x7a, 0xad, 0xe4, 0x5c, 0xb4, 0xb8, 0x73, 0xf8,
+                   0x8b, 0x59, 0x5a, 0x68, 0x79, 0x9f, 0xa1, 0x52,
+                   0xe6, 0xf8, 0xf7, 0x64, 0x7a, 0xac, 0x79, 0x57 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x0a, 0xb4, 0xe7, 0x63, 0x80, 0xd8, 0x4d, 0xde,
+                   0x4f, 0x68, 0x33, 0xc5, 0x8f, 0x2a, 0x9f, 0xb8,
+                   0xf8, 0x3b, 0xb0, 0x16, 0x9b, 0x17, 0x2b, 0xe4,
+                   0xb6, 0xe0, 0x59, 0x28, 0x87, 0x74, 0x1a, 0x36 },
+       .expected_ss = (u8[32]){ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x89, 0xe1, 0x0d, 0x57, 0x01, 0xb4, 0x33, 0x7d,
+                   0x2d, 0x03, 0x21, 0x81, 0x53, 0x8b, 0x10, 0x64,
+                   0xbd, 0x40, 0x84, 0x40, 0x1c, 0xec, 0xa1, 0xfd,
+                   0x12, 0x66, 0x3a, 0x19, 0x59, 0x38, 0x80, 0x00 },
+       .expected_ss = (u8[32]){ 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x2b, 0x55, 0xd3, 0xaa, 0x4a, 0x8f, 0x80, 0xc8,
+                   0xc0, 0xb2, 0xae, 0x5f, 0x93, 0x3e, 0x85, 0xaf,
+                   0x49, 0xbe, 0xac, 0x36, 0xc2, 0xfa, 0x73, 0x94,
+                   0xba, 0xb7, 0x6c, 0x89, 0x33, 0xf8, 0xf8, 0x1d },
+       .expected_ss = (u8[32]){ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x63, 0xe5, 0xb1, 0xfe, 0x96, 0x01, 0xfe, 0x84,
+                   0x38, 0x5d, 0x88, 0x66, 0xb0, 0x42, 0x12, 0x62,
+                   0xf7, 0x8f, 0xbf, 0xa5, 0xaf, 0xf9, 0x58, 0x5e,
+                   0x62, 0x66, 0x79, 0xb1, 0x85, 0x47, 0xd9, 0x59 },
+       .expected_ss = (u8[32]){ 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0xe4, 0x28, 0xf3, 0xda, 0xc1, 0x78, 0x09, 0xf8,
+                   0x27, 0xa5, 0x22, 0xce, 0x32, 0x35, 0x50, 0x58,
+                   0xd0, 0x73, 0x69, 0x36, 0x4a, 0xa7, 0x89, 0x02,
+                   0xee, 0x10, 0x13, 0x9b, 0x9f, 0x9d, 0xd6, 0x53 },
+       .expected_ss = (u8[32]){ 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0xb3, 0xb5, 0x0e, 0x3e, 0xd3, 0xa4, 0x07, 0xb9,
+                   0x5d, 0xe9, 0x42, 0xef, 0x74, 0x57, 0x5b, 0x5a,
+                   0xb8, 0xa1, 0x0c, 0x09, 0xee, 0x10, 0x35, 0x44,
+                   0xd6, 0x0b, 0xdf, 0xed, 0x81, 0x38, 0xab, 0x2b },
+       .expected_ss = (u8[32]){ 0xf9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x21, 0x3f, 0xff, 0xe9, 0x3d, 0x5e, 0xa8, 0xcd,
+                   0x24, 0x2e, 0x46, 0x28, 0x44, 0x02, 0x99, 0x22,
+                   0xc4, 0x3c, 0x77, 0xc9, 0xe3, 0xe4, 0x2f, 0x56,
+                   0x2f, 0x48, 0x5d, 0x24, 0xc5, 0x01, 0xa2, 0x0b },
+       .expected_ss = (u8[32]){ 0xf3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x91, 0xb2, 0x32, 0xa1, 0x78, 0xb3, 0xcd, 0x53,
+                   0x09, 0x32, 0x44, 0x1e, 0x61, 0x39, 0x41, 0x8f,
+                   0x72, 0x17, 0x22, 0x92, 0xf1, 0xda, 0x4c, 0x18,
+                   0x34, 0xfc, 0x5e, 0xbf, 0xef, 0xb5, 0x1e, 0x3f },
+       .expected_ss = (u8[32]){ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x04, 0x5c, 0x6e, 0x11, 0xc5, 0xd3, 0x32, 0x55,
+                   0x6c, 0x78, 0x22, 0xfe, 0x94, 0xeb, 0xf8, 0x9b,
+                   0x56, 0xa3, 0x87, 0x8d, 0xc2, 0x7c, 0xa0, 0x79,
+                   0x10, 0x30, 0x58, 0x84, 0x9f, 0xab, 0xcb, 0x4f },
+       .expected_ss = (u8[32]){ 0xe5, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x1c, 0xa2, 0x19, 0x0b, 0x71, 0x16, 0x35, 0x39,
+                   0x06, 0x3c, 0x35, 0x77, 0x3b, 0xda, 0x0c, 0x9c,
+                   0x92, 0x8e, 0x91, 0x36, 0xf0, 0x62, 0x0a, 0xeb,
+                   0x09, 0x3f, 0x09, 0x91, 0x97, 0xb7, 0xf7, 0x4e },
+       .expected_ss = (u8[32]){ 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0xf7, 0x6e, 0x90, 0x10, 0xac, 0x33, 0xc5, 0x04,
+                   0x3b, 0x2d, 0x3b, 0x76, 0xa8, 0x42, 0x17, 0x10,
+                   0x00, 0xc4, 0x91, 0x62, 0x22, 0xe9, 0xe8, 0x58,
+                   0x97, 0xa0, 0xae, 0xc7, 0xf6, 0x35, 0x0b, 0x3c },
+       .expected_ss = (u8[32]){ 0xdd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0xbb, 0x72, 0x68, 0x8d, 0x8f, 0x8a, 0xa7, 0xa3,
+                   0x9c, 0xd6, 0x06, 0x0c, 0xd5, 0xc8, 0x09, 0x3c,
+                   0xde, 0xc6, 0xfe, 0x34, 0x19, 0x37, 0xc3, 0x88,
+                   0x6a, 0x99, 0x34, 0x6c, 0xd0, 0x7f, 0xaa, 0x55 },
+       .expected_ss = (u8[32]){ 0xdb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x88, 0xfd, 0xde, 0xa1, 0x93, 0x39, 0x1c, 0x6a,
+                   0x59, 0x33, 0xef, 0x9b, 0x71, 0x90, 0x15, 0x49,
+                   0x44, 0x72, 0x05, 0xaa, 0xe9, 0xda, 0x92, 0x8a,
+                   0x6b, 0x91, 0xa3, 0x52, 0xba, 0x10, 0xf4, 0x1f },
+       .expected_ss = (u8[32]){ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - edge case for shared secret */
+{
+       .secret = (u8[32]){ 0xa0, 0xa4, 0xf1, 0x30, 0xb9, 0x8a, 0x5b, 0xe4,
+                    0xb1, 0xce, 0xdb, 0x7c, 0xb8, 0x55, 0x84, 0xa3,
+                    0x52, 0x0e, 0x14, 0x2d, 0x47, 0x4d, 0xc9, 0xcc,
+                    0xb9, 0x09, 0xa0, 0x73, 0xa9, 0x76, 0xbf, 0x63 },
+       .b_public = (u8[32]){ 0x30, 0x3b, 0x39, 0x2f, 0x15, 0x31, 0x16, 0xca,
+                   0xd9, 0xcc, 0x68, 0x2a, 0x00, 0xcc, 0xc4, 0x4c,
+                   0x95, 0xff, 0x0d, 0x3b, 0xbe, 0x56, 0x8b, 0xeb,
+                   0x6c, 0x4e, 0x73, 0x9b, 0xaf, 0xdc, 0x2c, 0x68 },
+       .expected_ss = (u8[32]){ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - checking for overflow */
+{
+       .secret = (u8[32]){ 0xc8, 0x17, 0x24, 0x70, 0x40, 0x00, 0xb2, 0x6d,
+                    0x31, 0x70, 0x3c, 0xc9, 0x7e, 0x3a, 0x37, 0x8d,
+                    0x56, 0xfa, 0xd8, 0x21, 0x93, 0x61, 0xc8, 0x8c,
+                    0xca, 0x8b, 0xd7, 0xc5, 0x71, 0x9b, 0x12, 0xb2 },
+       .b_public = (u8[32]){ 0xfd, 0x30, 0x0a, 0xeb, 0x40, 0xe1, 0xfa, 0x58,
+                   0x25, 0x18, 0x41, 0x2b, 0x49, 0xb2, 0x08, 0xa7,
+                   0x84, 0x2b, 0x1e, 0x1f, 0x05, 0x6a, 0x04, 0x01,
+                   0x78, 0xea, 0x41, 0x41, 0x53, 0x4f, 0x65, 0x2d },
+       .expected_ss = (u8[32]){ 0xb7, 0x34, 0x10, 0x5d, 0xc2, 0x57, 0x58, 0x5d,
+                   0x73, 0xb5, 0x66, 0xcc, 0xb7, 0x6f, 0x06, 0x27,
+                   0x95, 0xcc, 0xbe, 0xc8, 0x91, 0x28, 0xe5, 0x2b,
+                   0x02, 0xf3, 0xe5, 0x96, 0x39, 0xf1, 0x3c, 0x46 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - checking for overflow */
+{
+       .secret = (u8[32]){ 0xc8, 0x17, 0x24, 0x70, 0x40, 0x00, 0xb2, 0x6d,
+                    0x31, 0x70, 0x3c, 0xc9, 0x7e, 0x3a, 0x37, 0x8d,
+                    0x56, 0xfa, 0xd8, 0x21, 0x93, 0x61, 0xc8, 0x8c,
+                    0xca, 0x8b, 0xd7, 0xc5, 0x71, 0x9b, 0x12, 0xb2 },
+       .b_public = (u8[32]){ 0xc8, 0xef, 0x79, 0xb5, 0x14, 0xd7, 0x68, 0x26,
+                   0x77, 0xbc, 0x79, 0x31, 0xe0, 0x6e, 0xe5, 0xc2,
+                   0x7c, 0x9b, 0x39, 0x2b, 0x4a, 0xe9, 0x48, 0x44,
+                   0x73, 0xf5, 0x54, 0xe6, 0x67, 0x8e, 0xcc, 0x2e },
+       .expected_ss = (u8[32]){ 0x64, 0x7a, 0x46, 0xb6, 0xfc, 0x3f, 0x40, 0xd6,
+                   0x21, 0x41, 0xee, 0x3c, 0xee, 0x70, 0x6b, 0x4d,
+                   0x7a, 0x92, 0x71, 0x59, 0x3a, 0x7b, 0x14, 0x3e,
+                   0x8e, 0x2e, 0x22, 0x79, 0x88, 0x3e, 0x45, 0x50 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - checking for overflow */
+{
+       .secret = (u8[32]){ 0xc8, 0x17, 0x24, 0x70, 0x40, 0x00, 0xb2, 0x6d,
+                    0x31, 0x70, 0x3c, 0xc9, 0x7e, 0x3a, 0x37, 0x8d,
+                    0x56, 0xfa, 0xd8, 0x21, 0x93, 0x61, 0xc8, 0x8c,
+                    0xca, 0x8b, 0xd7, 0xc5, 0x71, 0x9b, 0x12, 0xb2 },
+       .b_public = (u8[32]){ 0x64, 0xae, 0xac, 0x25, 0x04, 0x14, 0x48, 0x61,
+                   0x53, 0x2b, 0x7b, 0xbc, 0xb6, 0xc8, 0x7d, 0x67,
+                   0xdd, 0x4c, 0x1f, 0x07, 0xeb, 0xc2, 0xe0, 0x6e,
+                   0xff, 0xb9, 0x5a, 0xec, 0xc6, 0x17, 0x0b, 0x2c },
+       .expected_ss = (u8[32]){ 0x4f, 0xf0, 0x3d, 0x5f, 0xb4, 0x3c, 0xd8, 0x65,
+                   0x7a, 0x3c, 0xf3, 0x7c, 0x13, 0x8c, 0xad, 0xce,
+                   0xcc, 0xe5, 0x09, 0xe4, 0xeb, 0xa0, 0x89, 0xd0,
+                   0xef, 0x40, 0xb4, 0xe4, 0xfb, 0x94, 0x61, 0x55 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - checking for overflow */
+{
+       .secret = (u8[32]){ 0xc8, 0x17, 0x24, 0x70, 0x40, 0x00, 0xb2, 0x6d,
+                    0x31, 0x70, 0x3c, 0xc9, 0x7e, 0x3a, 0x37, 0x8d,
+                    0x56, 0xfa, 0xd8, 0x21, 0x93, 0x61, 0xc8, 0x8c,
+                    0xca, 0x8b, 0xd7, 0xc5, 0x71, 0x9b, 0x12, 0xb2 },
+       .b_public = (u8[32]){ 0xbf, 0x68, 0xe3, 0x5e, 0x9b, 0xdb, 0x7e, 0xee,
+                   0x1b, 0x50, 0x57, 0x02, 0x21, 0x86, 0x0f, 0x5d,
+                   0xcd, 0xad, 0x8a, 0xcb, 0xab, 0x03, 0x1b, 0x14,
+                   0x97, 0x4c, 0xc4, 0x90, 0x13, 0xc4, 0x98, 0x31 },
+       .expected_ss = (u8[32]){ 0x21, 0xce, 0xe5, 0x2e, 0xfd, 0xbc, 0x81, 0x2e,
+                   0x1d, 0x02, 0x1a, 0x4a, 0xf1, 0xe1, 0xd8, 0xbc,
+                   0x4d, 0xb3, 0xc4, 0x00, 0xe4, 0xd2, 0xa2, 0xc5,
+                   0x6a, 0x39, 0x26, 0xdb, 0x4d, 0x99, 0xc6, 0x5b },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - checking for overflow */
+{
+       .secret = (u8[32]){ 0xc8, 0x17, 0x24, 0x70, 0x40, 0x00, 0xb2, 0x6d,
+                    0x31, 0x70, 0x3c, 0xc9, 0x7e, 0x3a, 0x37, 0x8d,
+                    0x56, 0xfa, 0xd8, 0x21, 0x93, 0x61, 0xc8, 0x8c,
+                    0xca, 0x8b, 0xd7, 0xc5, 0x71, 0x9b, 0x12, 0xb2 },
+       .b_public = (u8[32]){ 0x53, 0x47, 0xc4, 0x91, 0x33, 0x1a, 0x64, 0xb4,
+                   0x3d, 0xdc, 0x68, 0x30, 0x34, 0xe6, 0x77, 0xf5,
+                   0x3d, 0xc3, 0x2b, 0x52, 0xa5, 0x2a, 0x57, 0x7c,
+                   0x15, 0xa8, 0x3b, 0xf2, 0x98, 0xe9, 0x9f, 0x19 },
+       .expected_ss = (u8[32]){ 0x18, 0xcb, 0x89, 0xe4, 0xe2, 0x0c, 0x0c, 0x2b,
+                   0xd3, 0x24, 0x30, 0x52, 0x45, 0x26, 0x6c, 0x93,
+                   0x27, 0x69, 0x0b, 0xbe, 0x79, 0xac, 0xb8, 0x8f,
+                   0x5b, 0x8f, 0xb3, 0xf7, 0x4e, 0xca, 0x3e, 0x52 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - private key == -1 (mod order) */
+{
+       .secret = (u8[32]){ 0xa0, 0x23, 0xcd, 0xd0, 0x83, 0xef, 0x5b, 0xb8,
+                    0x2f, 0x10, 0xd6, 0x2e, 0x59, 0xe1, 0x5a, 0x68,
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50 },
+       .b_public = (u8[32]){ 0x25, 0x8e, 0x04, 0x52, 0x3b, 0x8d, 0x25, 0x3e,
+                   0xe6, 0x57, 0x19, 0xfc, 0x69, 0x06, 0xc6, 0x57,
+                   0x19, 0x2d, 0x80, 0x71, 0x7e, 0xdc, 0x82, 0x8f,
+                   0xa0, 0xaf, 0x21, 0x68, 0x6e, 0x2f, 0xaa, 0x75 },
+       .expected_ss = (u8[32]){ 0x25, 0x8e, 0x04, 0x52, 0x3b, 0x8d, 0x25, 0x3e,
+                   0xe6, 0x57, 0x19, 0xfc, 0x69, 0x06, 0xc6, 0x57,
+                   0x19, 0x2d, 0x80, 0x71, 0x7e, 0xdc, 0x82, 0x8f,
+                   0xa0, 0xaf, 0x21, 0x68, 0x6e, 0x2f, 0xaa, 0x75 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+},
+/* wycheproof - private key == 1 (mod order) on twist */
+{
+       .secret = (u8[32]){ 0x58, 0x08, 0x3d, 0xd2, 0x61, 0xad, 0x91, 0xef,
+                    0xf9, 0x52, 0x32, 0x2e, 0xc8, 0x24, 0xc6, 0x82,
+                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5f },
+       .b_public = (u8[32]){ 0x2e, 0xae, 0x5e, 0xc3, 0xdd, 0x49, 0x4e, 0x9f,
+                   0x2d, 0x37, 0xd2, 0x58, 0xf8, 0x73, 0xa8, 0xe6,
+                   0xe9, 0xd0, 0xdb, 0xd1, 0xe3, 0x83, 0xef, 0x64,
+                   0xd9, 0x8b, 0xb9, 0x1b, 0x3e, 0x0b, 0xe0, 0x35 },
+       .expected_ss = (u8[32]){ 0x2e, 0xae, 0x5e, 0xc3, 0xdd, 0x49, 0x4e, 0x9f,
+                   0x2d, 0x37, 0xd2, 0x58, 0xf8, 0x73, 0xa8, 0xe6,
+                   0xe9, 0xd0, 0xdb, 0xd1, 0xe3, 0x83, 0xef, 0x64,
+                   0xd9, 0x8b, 0xb9, 0x1b, 0x3e, 0x0b, 0xe0, 0x35 },
+       .secret_size = 32,
+       .b_public_size = 32,
+       .expected_ss_size = 32,
+
+}
+};
+
 static const struct kpp_testvec ecdh_tv_template[] = {
        {
 #ifndef CONFIG_CRYPTO_FIPS