1 files changed, 64 insertions, 0 deletions
diff --git a/lib/liboqs/src/kem/kyber/pqcrystals-kyber_kyber768_ref/symmetric.h b/lib/liboqs/src/kem/kyber/pqcrystals-kyber_kyber768_ref/symmetric.h
new file mode 100644
index 000000000..2f2fb6364
--- /dev/null
+++ b/lib/liboqs/src/kem/kyber/pqcrystals-kyber_kyber768_ref/symmetric.h
@@ -0,0 +1,64 @@
+#ifndef SYMMETRIC_H
+#define SYMMETRIC_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include "params.h"
+
+#ifdef KYBER_90S
+
+#include "aes256ctr.h"
+#include "sha2.h"
+
+#if (KYBER_SSBYTES != 32)
+#error "90s variant of Kyber can only generate keys of length 256 bits"
+#endif
+
+typedef aes256ctr_ctx xof_state;
+
+#define kyber_aes256xof_absorb KYBER_NAMESPACE(kyber_aes256xof_absorb)
+void kyber_aes256xof_absorb(aes256ctr_ctx *state, const uint8_t seed[32], uint8_t x, uint8_t y);
+
+#define kyber_aes256ctr_prf KYBER_NAMESPACE(kyber_aes256ctr_prf)
+void kyber_aes256ctr_prf(uint8_t *out, size_t outlen, const uint8_t key[32], uint8_t nonce);
+
+#define XOF_BLOCKBYTES AES256CTR_BLOCKBYTES
+
+#define hash_h(OUT, IN, INBYTES) sha256(OUT, IN, INBYTES)
+#define hash_g(OUT, IN, INBYTES) sha512(OUT, IN, INBYTES)
+#define xof_init(STATE, SEED) aes256ctr_init_key(STATE, SEED)
+#define xof_absorb(STATE, SEED, X, Y) kyber_aes256xof_absorb(STATE, SEED, X, Y)
+#define xof_squeezeblocks(OUT, OUTBLOCKS, STATE) aes256ctr_squeezeblocks(OUT, OUTBLOCKS, STATE)
+#define xof_release(STATE) aes256_ctx_release(STATE)
+#define prf(OUT, OUTBYTES, KEY, NONCE) kyber_aes256ctr_prf(OUT, OUTBYTES, KEY, NONCE)
+#define kdf(OUT, IN, INBYTES) sha256(OUT, IN, INBYTES)
+
+#else
+
+#include "fips202.h"
+
+typedef shake128incctx xof_state;
+
+#define kyber_shake128_absorb KYBER_NAMESPACE(kyber_shake128_absorb)
+void kyber_shake128_absorb(shake128incctx *s,
+                           const uint8_t seed[KYBER_SYMBYTES],
+                           uint8_t x,
+                           uint8_t y);
+
+#define kyber_shake256_prf KYBER_NAMESPACE(kyber_shake256_prf)
+void kyber_shake256_prf(uint8_t *out, size_t outlen, const uint8_t key[KYBER_SYMBYTES], uint8_t nonce);
+
+#define XOF_BLOCKBYTES SHAKE128_RATE
+
+#define hash_h(OUT, IN, INBYTES) sha3_256(OUT, IN, INBYTES)
+#define hash_g(OUT, IN, INBYTES) sha3_512(OUT, IN, INBYTES)
+#define xof_init(STATE, SEED) shake128_inc_init(STATE)
+#define xof_absorb(STATE, SEED, X, Y) kyber_shake128_absorb(STATE, SEED, X, Y)
+#define xof_squeezeblocks(OUT, OUTBLOCKS, STATE) shake128_squeezeblocks(OUT, OUTBLOCKS, STATE)
+#define xof_release(STATE) shake128_inc_ctx_release(STATE)
+#define prf(OUT, OUTBYTES, KEY, NONCE) kyber_shake256_prf(OUT, OUTBYTES, KEY, NONCE)
+#define kdf(OUT, IN, INBYTES) shake256(OUT, KYBER_SSBYTES, IN, INBYTES)
+
+#endif /* KYBER_90S */
+
+#endif /* SYMMETRIC_H */