Merge PR pq-crystals#93: Add SPDX headers and copyright notices

danalec · danalec · commit 8a1c2e284cc1 · 2026-03-27T16:00:12.000-03:00
diff --git a/avx2/align.h b/avx2/align.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef ALIGN_H
 #define ALIGN_H
 
diff --git a/avx2/api.h b/avx2/api.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef API_H
 #define API_H
 
diff --git a/avx2/basemul.S b/avx2/basemul.S
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include "consts.h"
 
 .macro schoolbook off
diff --git a/avx2/cbd.c b/avx2/cbd.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include <immintrin.h>
 #include "params.h"
diff --git a/avx2/cbd.h b/avx2/cbd.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef CBD_H
 #define CBD_H
 
diff --git a/avx2/consts.c b/avx2/consts.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include "align.h"
 #include "params.h"
 #include "consts.h"
diff --git a/avx2/consts.h b/avx2/consts.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef CONSTS_H
 #define CONSTS_H
 
diff --git a/avx2/fips202.h b/avx2/fips202.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef FIPS202_H
 #define FIPS202_H
 
diff --git a/avx2/fips202x4.c b/avx2/fips202x4.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stddef.h>
 #include <stdint.h>
 #include <immintrin.h>
diff --git a/avx2/fips202x4.h b/avx2/fips202x4.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef FIPS202X4_H
 #define FIPS202X4_H
 
diff --git a/avx2/fq.S b/avx2/fq.S
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include "consts.h"
 .include "fq.inc"
 
diff --git a/avx2/fq.inc b/avx2/fq.inc
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 .macro red16 r,rs=0,x=12
 vpmulhw         %ymm1,%ymm\r,%ymm\x
 .if \rs
diff --git a/avx2/indcpa.c b/avx2/indcpa.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stddef.h>
 #include <stdint.h>
 #include <immintrin.h>
diff --git a/avx2/invntt.S b/avx2/invntt.S
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include "consts.h"
 .include "shuffle.inc"
 .include "fq.inc"
diff --git a/avx2/keccak4x/KeccakP-1600-times4-SIMD256.c b/avx2/keccak4x/KeccakP-1600-times4-SIMD256.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: CC0-1.0
+ * Copyright: Keccak, Keyak and Ketje Teams, namely, Guido Bertoni, Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer
+ * */
+
 /*
 Implementation by the Keccak, Keyak and Ketje Teams, namely, Guido Bertoni,
 Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer, hereby
diff --git a/avx2/keccak4x/KeccakP-1600-times4-SnP.h b/avx2/keccak4x/KeccakP-1600-times4-SnP.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: CC0-1.0
+ * Copyright: Keccak, Keyak and Ketje Teams, namely, Guido Bertoni, Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer
+ * */
+
 /*
 Implementation by the Keccak, Keyak and Ketje Teams, namely, Guido Bertoni,
 Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer, hereby
diff --git a/avx2/keccak4x/KeccakP-1600-unrolling.macros b/avx2/keccak4x/KeccakP-1600-unrolling.macros
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: CC0-1.0
+ * Copyright: Keccak, Keyak and Ketje Teams, namely, Guido Bertoni, Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer
+ * */
+
 /*
 Implementation by the Keccak, Keyak and Ketje Teams, namely, Guido Bertoni,
 Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer, hereby
diff --git a/avx2/keccak4x/KeccakP-SIMD256-config.h b/avx2/keccak4x/KeccakP-SIMD256-config.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: CC0-1.0
+ * Copyright: Keccak, Keyak and Ketje Teams, namely, Guido Bertoni, Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer
+ * */
+
 #define KeccakP1600times4_implementation_config "AVX2, all rounds unrolled"
 #define KeccakP1600times4_fullUnrolling
 #define KeccakP1600times4_useAVX2
diff --git a/avx2/keccak4x/KeccakP-align.h b/avx2/keccak4x/KeccakP-align.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: CC0-1.0
+ * Copyright: Keccak, Keyak and Ketje Teams, namely, Guido Bertoni, Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer
+ * */
+
 /*
 Implementation by the Keccak, Keyak and Ketje Teams, namely, Guido Bertoni,
 Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer, hereby
diff --git a/avx2/ntt.S b/avx2/ntt.S
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include "consts.h"
 .include "shuffle.inc"
 
diff --git a/avx2/ntt.h b/avx2/ntt.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef NTT_H
 #define NTT_H
 
diff --git a/avx2/params.h b/avx2/params.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef PARAMS_H
 #define PARAMS_H
 
diff --git a/avx2/poly.c b/avx2/poly.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include <immintrin.h>
 #include <string.h>
diff --git a/avx2/poly.h b/avx2/poly.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef POLY_H
 #define POLY_H
 
diff --git a/avx2/polyvec.c b/avx2/polyvec.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include <immintrin.h>
 #include <string.h>
diff --git a/avx2/polyvec.h b/avx2/polyvec.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef POLYVEC_H
 #define POLYVEC_H
 
diff --git a/avx2/reduce.h b/avx2/reduce.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef REDUCE_H
 #define REDUCE_H
 
diff --git a/avx2/rejsample.c b/avx2/rejsample.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include <immintrin.h>
 #include <string.h>
diff --git a/avx2/rejsample.h b/avx2/rejsample.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef REJSAMPLE_H
 #define REJSAMPLE_H
 
diff --git a/avx2/shuffle.S b/avx2/shuffle.S
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include "consts.h"
 .include "fq.inc"
 .include "shuffle.inc"
diff --git a/avx2/shuffle.inc b/avx2/shuffle.inc
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 .macro shuffle8 r0,r1,r2,r3
 vperm2i128	$0x20,%ymm\r1,%ymm\r0,%ymm\r2
 vperm2i128	$0x31,%ymm\r1,%ymm\r0,%ymm\r3
diff --git a/avx2/symmetric.h b/avx2/symmetric.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef SYMMETRIC_H
 #define SYMMETRIC_H
 
diff --git a/avx2/verify.c b/avx2/verify.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdlib.h>
 #include <stdint.h>
 #include <immintrin.h>
diff --git a/ref/api.h b/ref/api.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef API_H
 #define API_H
 
diff --git a/ref/cbd.c b/ref/cbd.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include "params.h"
 #include "cbd.h"
diff --git a/ref/cbd.h b/ref/cbd.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef CBD_H
 #define CBD_H
 
diff --git a/ref/fips202.c b/ref/fips202.c
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, Gregor Seiler, Peter Schwabe, Damien Stehlé,
+ *            Ronny Van Keer (crypto_hash/keccakc512/simple/ from http://bench.cr.yp.to/supercop.html),
+ *            Gilles Van Assche, Daniel J. Bernstein, Peter Schwabe (TweetFips202)
+ * */
+
 /* Based on the public domain implementation in crypto_hash/keccakc512/simple/ from
  * http://bench.cr.yp.to/supercop.html by Ronny Van Keer and the public domain "TweetFips202"
  * implementation from https://twitter.com/tweetfips202 by Gilles Van Assche, Daniel J. Bernstein,
diff --git a/ref/fips202.h b/ref/fips202.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef FIPS202_H
 #define FIPS202_H
 
diff --git a/ref/indcpa.c b/ref/indcpa.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
diff --git a/ref/indcpa.h b/ref/indcpa.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef INDCPA_H
 #define INDCPA_H
 
diff --git a/ref/kem.c b/ref/kem.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
diff --git a/ref/kem.h b/ref/kem.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef KEM_H
 #define KEM_H
 
diff --git a/ref/ntt.c b/ref/ntt.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include "params.h"
 #include "ntt.h"
diff --git a/ref/ntt.h b/ref/ntt.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef NTT_H
 #define NTT_H
 
diff --git a/ref/params.h b/ref/params.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef PARAMS_H
 #define PARAMS_H
 
diff --git a/ref/poly.c b/ref/poly.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include "params.h"
 #include "poly.h"
diff --git a/ref/poly.h b/ref/poly.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef POLY_H
 #define POLY_H
 
diff --git a/ref/polyvec.c b/ref/polyvec.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #include <stdint.h>
 #include "params.h"
 #include "poly.h"
diff --git a/ref/polyvec.h b/ref/polyvec.h
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 OR CC0-1.0
+ * Copyright: Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John Schanck, Peter Schwabe, Gregor Seiler, Damien Stehlé
+ * */
+
 #ifndef POLYVEC_H
 #define POLYVEC_H
 
diff --git a/ref/randombytes.c b/ref/randombytes.c
diff --git a/ref/randombytes.h b/ref/randombytes.h
diff --git a/ref/reduce.c b/ref/reduce.c
diff --git a/ref/reduce.h b/ref/reduce.h
diff --git a/ref/symmetric-shake.c b/ref/symmetric-shake.c
diff --git a/ref/symmetric.h b/ref/symmetric.h
diff --git a/ref/test/cpucycles.c b/ref/test/cpucycles.c
diff --git a/ref/test/cpucycles.h b/ref/test/cpucycles.h
diff --git a/ref/test/speed_print.c b/ref/test/speed_print.c
diff --git a/ref/test/speed_print.h b/ref/test/speed_print.h
diff --git a/ref/test/test_kyber.c b/ref/test/test_kyber.c
diff --git a/ref/test/test_speed.c b/ref/test/test_speed.c
diff --git a/ref/verify.c b/ref/verify.c
diff --git a/ref/verify.h b/ref/verify.h
