Pull new HQC implementation from upstream (#1585)

* Update Sphincs+ PQClean patch

* Don't apply PQClean Dilithium and Kyber patches

* Run copy_from_upstream; don't apply Dilithium and Kyber changes

* Run HQC KATs with custom PRNG

* Satisfy astyle

* Add licence for common code

* Fix CI build errors

* Update HQC version, OQS version, and SOVERSION

* Move HQC PRNG into test file

* Satisfy astyle

* Fix SHA3 link error

* Reset HQC issues/passes

* fixup! Fix SHA3 link error

* fix kat_kem linkage to make HQC PR pass CI (#1601)

* fix kat_kem linkage

* remove armhf CI support

* Revert "remove armhf CI support"

This reverts commit af759bb.

---------

Co-authored-by: Michael Baentsch <[email protected]>

Author: SWilson4

tests/KATs/kem/kats.json

@@ -103,4 +103,4 @@
     "all": "36e1e53d4e6e295e8fb804449958ad9a3719aa350e91933c65791b9117382d57",
     "single": "afc42c3a5b10f4ef69654250097ebda9b9564570f4086744b24a6daf2bd1f89a"
   }
-}
+}

tests/kat_kem.c

@@ -88,6 +88,39 @@ static int is_mceliece(const char *method_name) {
 	         || !strcmp(method_name, OQS_KEM_alg_classic_mceliece_8192128f) );
 }
 
+/* HQC-specific functions */
+static inline bool is_hqc(const char *method_name) {
+	return (0 == strcmp(method_name, OQS_KEM_alg_hqc_128))
+	       || (0 == strcmp(method_name, OQS_KEM_alg_hqc_192))
+	       || (0 == strcmp(method_name, OQS_KEM_alg_hqc_256));
+}
+
+static void HQC_randombytes_init(const uint8_t *entropy_input, const uint8_t *personalization_string) {
+	uint8_t domain = HQC_PRNG_DOMAIN;
+	if (shake_prng_state.ctx != NULL) {
+		OQS_SHA3_shake256_inc_ctx_reset(&shake_prng_state);
+	} else {
+		OQS_SHA3_shake256_inc_init(&shake_prng_state);
+	}
+	OQS_SHA3_shake256_inc_absorb(&shake_prng_state, entropy_input, 48);
+	if (personalization_string != NULL) {
+		OQS_SHA3_shake256_inc_absorb(&shake_prng_state, personalization_string, 48);
+	}
+	OQS_SHA3_shake256_inc_absorb(&shake_prng_state, &domain, 1);
+	OQS_SHA3_shake256_inc_finalize(&shake_prng_state);
+}
+
+static void HQC_randombytes(uint8_t *random_array, size_t bytes_to_read) {
+	OQS_SHA3_shake256_inc_squeeze(random_array, bytes_to_read, &shake_prng_state);
+}
+
+static void HQC_randombytes_free(void) {
+	if (shake_prng_state.ctx != NULL) {
+		OQS_SHA3_shake256_inc_ctx_release(&shake_prng_state);
+		shake_prng_state.ctx = NULL;
+	}
+}
+
 static OQS_STATUS kem_kat(const char *method_name, bool all) {
 
 	uint8_t entropy_input[48];
@@ -105,6 +138,8 @@ static OQS_STATUS kem_kat(const char *method_name, bool all) {
 	void (*randombytes_free)(void) = NULL;
     int max_count;
 	int max_count;
+	void (*randombytes_init)(const uint8_t *, const uint8_t *) = NULL;
+	void (*randombytes_free)(void) = NULL;
 
 	kem = OQS_KEM_new(method_name);
 	if (kem == NULL) {