Add a high-level crypto_kem API mapping to xwing

test/default/Makefile.am

@@ -49,6 +49,7 @@ EXTRA_DIST = \
 	ipcrypt.exp \
 	kdf.exp \
 	kdf_hkdf.exp \
+	kem.exp \
 	kem_mlkem768.exp \
 	kem_xwing.exp \
 	keygen.exp \
@@ -144,6 +145,7 @@ DISTCLEANFILES = \
 	ipcrypt.res \
 	kdf.res \
 	kdf_hkdf.res \
+	kem.res \
 	kem_mlkem768.res \
 	kem_xwing.res \
 	keygen.res \
@@ -244,6 +246,7 @@ TESTS_TARGETS = \
 	hash_sha3512 \
 	ipcrypt \
 	kdf \
+	kem \
 	kem_mlkem768 \
 	kem_xwing \
 	keygen \
@@ -430,6 +433,9 @@ kdf_LDADD                 = $(TESTS_LDADD)
 kdf_hkdf_SOURCE            = cmptest.h kdf_hkdf.c
 kdf_hkdf_LDADD             = $(TESTS_LDADD)
 
+kem_SOURCE                 = cmptest.h kem.c
+kem_LDADD                  = $(TESTS_LDADD)
+
 kem_mlkem768_SOURCE        = cmptest.h kem_mlkem768.c
 kem_mlkem768_LDADD         = $(TESTS_LDADD)
 

test/default/kem.c

@@ -0,0 +1,70 @@
+#define TEST_NAME "kem"
+#include "cmptest.h"
+
+static void
+tv_kem(void)
+{
+    unsigned char *pk;
+    unsigned char *sk;
+    unsigned char *seed;
+    unsigned char *ct;
+    unsigned char *ss_enc;
+    unsigned char *ss_dec;
+    int            i;
+
+    pk = (unsigned char *) sodium_malloc(crypto_kem_PUBLICKEYBYTES);
+    sk = (unsigned char *) sodium_malloc(crypto_kem_SECRETKEYBYTES);
+    seed = (unsigned char *) sodium_malloc(crypto_kem_SEEDBYTES);
+    ct = (unsigned char *) sodium_malloc(crypto_kem_CIPHERTEXTBYTES);
+    ss_enc = (unsigned char *) sodium_malloc(crypto_kem_SHAREDSECRETBYTES);
+    ss_dec = (unsigned char *) sodium_malloc(crypto_kem_SHAREDSECRETBYTES);
+
+    printf("primitive: %s\n", crypto_kem_primitive());
+
+    assert(crypto_kem_publickeybytes() == crypto_kem_PUBLICKEYBYTES);
+    assert(crypto_kem_secretkeybytes() == crypto_kem_SECRETKEYBYTES);
+    assert(crypto_kem_ciphertextbytes() == crypto_kem_CIPHERTEXTBYTES);
+    assert(crypto_kem_sharedsecretbytes() == crypto_kem_SHAREDSECRETBYTES);
+    assert(crypto_kem_seedbytes() == crypto_kem_SEEDBYTES);
+
+    printf("constants: ok\n");
+
+    for (i = 0; i < (int) crypto_kem_SEEDBYTES; i++) {
+        seed[i] = (unsigned char) i;
+    }
+    crypto_kem_seed_keypair(pk, sk, seed);
+
+    assert(crypto_kem_enc(ct, ss_enc, pk) == 0);
+    assert(crypto_kem_dec(ss_dec, ct, sk) == 0);
+
+    if (memcmp(ss_enc, ss_dec, crypto_kem_SHAREDSECRETBYTES) != 0) {
+        printf("ERROR: shared secrets don't match!\n");
+    } else {
+        printf("shared secrets match: ok\n");
+    }
+
+    crypto_kem_keypair(pk, sk);
+    assert(crypto_kem_enc(ct, ss_enc, pk) == 0);
+    assert(crypto_kem_dec(ss_dec, ct, sk) == 0);
+
+    if (memcmp(ss_enc, ss_dec, crypto_kem_SHAREDSECRETBYTES) != 0) {
+        printf("ERROR: shared secrets don't match (random keys)!\n");
+    } else {
+        printf("random keypair test: ok\n");
+    }
+
+    sodium_free(ss_dec);
+    sodium_free(ss_enc);
+    sodium_free(ct);
+    sodium_free(seed);
+    sodium_free(sk);
+    sodium_free(pk);
+}
+
+int
+main(void)
+{
+    tv_kem();
+
+    return 0;
+}

test/default/kem.exp

@@ -0,0 +1,4 @@
+primitive: xwing
+constants: ok
+shared secrets match: ok
+random keypair test: ok