diff --git a/crypto_sign/rainbowIa-classic/clean/blas.h b/crypto_sign/rainbowIa-classic/clean/blas.h
index c54a9269..406a61cf 100644
--- a/crypto_sign/rainbowIa-classic/clean/blas.h
+++ b/crypto_sign/rainbowIa-classic/clean/blas.h
@@ -1,9 +1,9 @@
+#ifndef _BLAS_H_
+#define _BLAS_H_
 /// @file blas.h
 /// @brief Defining the implementations for linear algebra functions depending on the machine architecture.
 ///
 
-#ifndef _BLAS_H_
-#define _BLAS_H_
 
 #include "blas_comm.h"
 #include "blas_u32.h"
diff --git a/crypto_sign/rainbowIa-classic/clean/blas_comm.h b/crypto_sign/rainbowIa-classic/clean/blas_comm.h
index 5b779430..aab6d3ce 100644
--- a/crypto_sign/rainbowIa-classic/clean/blas_comm.h
+++ b/crypto_sign/rainbowIa-classic/clean/blas_comm.h
@@ -1,8 +1,8 @@
+#ifndef _BLAS_COMM_H_
+#define _BLAS_COMM_H_
 /// @file blas_comm.h
 /// @brief Common functions for linear algebra.
 ///
-#ifndef _BLAS_COMM_H_
-#define _BLAS_COMM_H_
 
 #include <stdint.h>
 
diff --git a/crypto_sign/rainbowIa-classic/clean/blas_u32.h b/crypto_sign/rainbowIa-classic/clean/blas_u32.h
index 81ea3411..ba3e2679 100644
--- a/crypto_sign/rainbowIa-classic/clean/blas_u32.h
+++ b/crypto_sign/rainbowIa-classic/clean/blas_u32.h
@@ -1,9 +1,9 @@
+#ifndef _BLAS_U32_H_
+#define _BLAS_U32_H_
 /// @file blas_u32.h
 /// @brief Inlined functions for implementing basic linear algebra functions for uint32 arch.
 ///
 
-#ifndef _BLAS_U32_H_
-#define _BLAS_U32_H_
 
 #include "gf16.h"
 
diff --git a/crypto_sign/rainbowIa-classic/clean/gf16.h b/crypto_sign/rainbowIa-classic/clean/gf16.h
index ace634d8..349c22a6 100644
--- a/crypto_sign/rainbowIa-classic/clean/gf16.h
+++ b/crypto_sign/rainbowIa-classic/clean/gf16.h
@@ -1,9 +1,9 @@
+#ifndef _GF16_H_
+#define _GF16_H_
 /// @file gf16.h
 /// @brief Library for arithmetics in GF(16) and GF(256)
 ///
 
-#ifndef _GF16_H_
-#define _GF16_H_
 
 #include <stdint.h>
 
diff --git a/crypto_sign/rainbowIa-classic/clean/hash_len_config.h b/crypto_sign/rainbowIa-classic/clean/hash_len_config.h
index eb9da010..253130c9 100644
--- a/crypto_sign/rainbowIa-classic/clean/hash_len_config.h
+++ b/crypto_sign/rainbowIa-classic/clean/hash_len_config.h
@@ -1,14 +1,12 @@
+#ifndef _HASH_LEN_CONFIG_H_
+#define _HASH_LEN_CONFIG_H_
 /// @file hash_len_config.h
 /// @brief defining the lenght of outputs of the internel hash functions.
 ///
 
-#ifndef _HASH_LEN_CONFIG_H_
-#define _HASH_LEN_CONFIG_H_
-
 
+// TODO: remove this file
 /// defining the lenght of outputs of the internel hash functions.
-#ifndef _HASH_LEN
-#define _HASH_LEN (32)
-#endif
+//#define _HASH_LEN (32)
 
 #endif
diff --git a/crypto_sign/rainbowIa-classic/clean/parallel_matrix_op.h b/crypto_sign/rainbowIa-classic/clean/parallel_matrix_op.h
index 4881bc53..712bef52 100644
--- a/crypto_sign/rainbowIa-classic/clean/parallel_matrix_op.h
+++ b/crypto_sign/rainbowIa-classic/clean/parallel_matrix_op.h
@@ -1,15 +1,10 @@
+#ifndef _P_MATRIX_OP_H_
+#define _P_MATRIX_OP_H_
 ///  @file  parallel_matrix_op.h
 ///  @brief Librarys for operations of batched matrixes.
 ///
 ///
 
-#ifndef _P_MATRIX_OP_H_
-#define _P_MATRIX_OP_H_
-
-
-
-
-
 ////////////////////////////////////////////////////////////////////////
 ///   Librarys for batched matrix operations.
 ///   A batched matrix is a matrix which each element of the matrix
diff --git a/crypto_sign/rainbowIa-classic/clean/rainbow.h b/crypto_sign/rainbowIa-classic/clean/rainbow.h
index c1947f67..9aa4a11c 100644
--- a/crypto_sign/rainbowIa-classic/clean/rainbow.h
+++ b/crypto_sign/rainbowIa-classic/clean/rainbow.h
@@ -1,18 +1,15 @@
+#ifndef _RAINBOW_H_
+#define _RAINBOW_H_
 /// @file rainbow.h
 /// @brief APIs for rainbow.
 ///
 
-#ifndef _RAINBOW_H_
-#define _RAINBOW_H_
 
 #include "rainbow_config.h"
 #include "rainbow_keypair.h"
 
 #include <stdint.h>
 
-#ifdef  __cplusplus
-extern  "C" {
-#endif
 
 
 ///
@@ -54,11 +51,4 @@ int PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_sign_cyclic( uint8_t *signature, cons
 ///
 int PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( const uint8_t *digest, const uint8_t *signature, const cpk_t *pk );
 
-
-
-#ifdef  __cplusplus
-}
-#endif
-
-
 #endif // _RAINBOW_H_
diff --git a/crypto_sign/rainbowIa-classic/clean/rainbow_blas.h b/crypto_sign/rainbowIa-classic/clean/rainbow_blas.h
index 8f42efd3..dd463840 100644
--- a/crypto_sign/rainbowIa-classic/clean/rainbow_blas.h
+++ b/crypto_sign/rainbowIa-classic/clean/rainbow_blas.h
@@ -1,10 +1,10 @@
+#ifndef _RAINBOW_BLAS_H_
+#define _RAINBOW_BLAS_H_
 /// @file rainbow_blas.h
 /// @brief Defining the functions used in rainbow.c acconding to the definitions in rainbow_config.h
 ///
 ///  Defining the functions used in rainbow.c acconding to the definitions in rainbow_config.h
 
-#ifndef _RAINBOW_BLAS_H_
-#define _RAINBOW_BLAS_H_
 
 #include "blas.h"
 
@@ -12,8 +12,6 @@
 
 #include "rainbow_config.h"
 
-#ifdef _USE_GF16
-
 #define gfv_get_ele     PQCLEAN_RAINBOWIACLASSIC_CLEAN_gf16v_get_ele
 #define gfv_mul_scalar  PQCLEAN_RAINBOWIACLASSIC_CLEAN_gf16v_mul_scalar
 #define gfv_madd        PQCLEAN_RAINBOWIACLASSIC_CLEAN_gf16v_madd
@@ -31,27 +29,5 @@
 #define batch_quad_trimat_eval PQCLEAN_RAINBOWIACLASSIC_CLEAN_batch_quad_trimat_eval_gf16
 #define batch_quad_recmat_eval PQCLEAN_RAINBOWIACLASSIC_CLEAN_batch_quad_recmat_eval_gf16
 
-#else
-
-#define gfv_get_ele     gf256v_get_ele
-#define gfv_mul_scalar  gf256v_mul_scalar
-#define gfv_madd        gf256v_madd
-
-#define gfmat_prod      gf256mat_prod
-#define gfmat_inv       gf256mat_inv
-
-#define batch_trimat_madd    batch_trimat_madd_gf256
-#define batch_trimatTr_madd  batch_trimatTr_madd_gf256
-#define batch_2trimat_madd   batch_2trimat_madd_gf256
-#define batch_matTr_madd     batch_matTr_madd_gf256
-#define batch_bmatTr_madd    batch_bmatTr_madd_gf256
-#define batch_mat_madd       batch_mat_madd_gf256
-
-#define batch_quad_trimat_eval batch_quad_trimat_eval_gf256
-#define batch_quad_recmat_eval batch_quad_recmat_eval_gf256
-
-#endif
-
-
 #endif  // _RAINBOW_BLAS_H_
 
diff --git a/crypto_sign/rainbowIa-classic/clean/rainbow_config.h b/crypto_sign/rainbowIa-classic/clean/rainbow_config.h
index da952ce4..b7750aa3 100644
--- a/crypto_sign/rainbowIa-classic/clean/rainbow_config.h
+++ b/crypto_sign/rainbowIa-classic/clean/rainbow_config.h
@@ -1,3 +1,5 @@
+#ifndef _H_RAINBOW_CONFIG_H_
+#define _H_RAINBOW_CONFIG_H_
 /// @file rainbow_config.h
 /// @brief Defining the parameters of the Rainbow and the corresponding constants.
 ///
@@ -6,45 +8,43 @@
 ///
 ///
 
-#ifndef _H_RAINBOW_CONFIG_H_
-#define _H_RAINBOW_CONFIG_H_
 
 
 // TODO: refactor this
 
 /// the defined parameter
-#if (!defined(_RAINBOW16_32_32_32))&&(!defined(_RAINBOW256_68_36_36))&&(!defined(_RAINBOW256_92_48_48))
+//#if (!defined(_RAINBOW16_32_32_32))&&(!defined(_RAINBOW256_68_36_36))&&(!defined(_RAINBOW256_92_48_48))
 #define _RAINBOW16_32_32_32
 //#define _RAINBOW256_68_36_36
 //#define _RAINBOW256_92_48_48
-#endif
+//#endif
 
 
-#if defined _RAINBOW16_32_32_32
+//#if defined _RAINBOW16_32_32_32
 #define _USE_GF16
 #define _GFSIZE 16
 #define _V1 32
 #define _O1 32
 #define _O2 32
 #define _HASH_LEN 32
-
-#elif defined _RAINBOW256_68_36_36
-#define _GFSIZE 256
-#define _V1 68
-#define _O1 36
-#define _O2 36
-#define _HASH_LEN 48
-
-#elif defined _RAINBOW256_92_48_48
-#define _GFSIZE 256
-#define _V1 92
-#define _O1 48
-#define _O2 48
-#define _HASH_LEN 64
-
-#else
-error here.
-#endif
+//
+//#elif defined _RAINBOW256_68_36_36
+//#define _GFSIZE 256
+//#define _V1 68
+//#define _O1 36
+//#define _O2 36
+//#define _HASH_LEN 48
+//
+//#elif defined _RAINBOW256_92_48_48
+//#define _GFSIZE 256
+//#define _V1 92
+//#define _O1 48
+//#define _O2 48
+//#define _HASH_LEN 64
+//
+//#else
+//error here.
+//#endif
 
 
 #define _V2 ((_V1)+(_O1))
@@ -64,7 +64,7 @@ error here.
 /// size of variables, in # bytes.
 
 
-#ifdef _USE_GF16
+//#ifdef _USE_GF16
 // GF16
 #define _V1_BYTE (_V1/2)
 #define _V2_BYTE (_V2/2)
@@ -73,16 +73,16 @@ error here.
 #define _PUB_N_BYTE  (_PUB_N/2)
 #define _PUB_M_BYTE  (_PUB_M/2)
 
-#else
-// GF256
-#define _V1_BYTE (_V1)
-#define _V2_BYTE (_V2)
-#define _O1_BYTE (_O1)
-#define _O2_BYTE (_O2)
-#define _PUB_N_BYTE  (_PUB_N)
-#define _PUB_M_BYTE  (_PUB_M)
-
-#endif
+//#else
+//// GF256
+//#define _V1_BYTE (_V1)
+//#define _V2_BYTE (_V2)
+//#define _O1_BYTE (_O1)
+//#define _O2_BYTE (_O2)
+//#define _PUB_N_BYTE  (_PUB_N)
+//#define _PUB_M_BYTE  (_PUB_M)
+//
+//#endif
 
 
 /// length of seed for public key, in # bytes
diff --git a/crypto_sign/rainbowIa-classic/clean/rainbow_keypair.h b/crypto_sign/rainbowIa-classic/clean/rainbow_keypair.h
index accee12c..d5996138 100644
--- a/crypto_sign/rainbowIa-classic/clean/rainbow_keypair.h
+++ b/crypto_sign/rainbowIa-classic/clean/rainbow_keypair.h
@@ -1,10 +1,10 @@
+#ifndef _RAINBOW_KEYPAIR_H_
+#define _RAINBOW_KEYPAIR_H_
 /// @file rainbow_keypair.h
 /// @brief Formats of key pairs and functions for generating key pairs.
 /// Formats of key pairs and functions for generating key pairs.
 ///
 
-#ifndef _RAINBOW_KEYPAIR_H_
-#define _RAINBOW_KEYPAIR_H_
 
 
 #include "rainbow_config.h"
diff --git a/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.c b/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.c
index 70ebac1e..081eaaac 100644
--- a/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.c
+++ b/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.c
@@ -119,18 +119,8 @@ void calculate_Q_from_F_ref( ext_cpk_t *Qs, const sk_t *Fs, const sk_t *Ts ) {
     // l2_Q5 : _O2_BYTE * _V1 * _O1
     // l2_Q9 : _O2_BYTE * _V1 * _O2
 
-#define SIZE_TEMPQ (_O1_BYTE * _O1 * _O1)
-    #if (_O1_BYTE*_O2*_O2)> SIZE_TEMPQ
-#define SIZE_TEMPQ (_O1_BYTE*_O2*_O2)
-    #endif
-    #if (_O2_BYTE*_O1*_O1) > SIZE_TEMPQ
-#define SIZE_TEMPQ (_O2_BYTE*_O1*_O1)
-    #endif
-    #if (_O2_BYTE*_O2*_O2) > SIZE_TEMPQ
-#define SIZE_TEMPQ (_O2_BYTE*_O2*_O2)
-    #endif
-
-    unsigned char tempQ[SIZE_TEMPQ + 32];
+
+    unsigned char tempQ[_O1_BYTE * _O1 * _O1 + 32];
 
     memset( tempQ, 0, _O1_BYTE * _O1 * _O1 );     // l1_Q5
     batch_matTr_madd( tempQ, Ts->t1, _V1, _V1_BYTE, _O1, Qs->l1_Q2, _O1, _O1_BYTE );    // t1_tr*(F1*T1 + F2)
diff --git a/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.h b/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.h
index 5aec5ae4..ec27f572 100644
--- a/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.h
+++ b/crypto_sign/rainbowIa-classic/clean/rainbow_keypair_computation.h
@@ -1,3 +1,5 @@
+#ifndef _RAINBOW_KEYPAIR_COMP_H_
+#define _RAINBOW_KEYPAIR_COMP_H_
 /// @file rainbow_keypair_computation.h
 /// @brief Functions for calculating pk/sk while generating keys.
 ///
@@ -5,8 +7,6 @@
 /// Functions for calculating pk/sk for key generation.
 ///
 
-#ifndef _RAINBOW_KEYPAIR_COMP_H_
-#define _RAINBOW_KEYPAIR_COMP_H_
 
 
 #include "rainbow_keypair.h"
diff --git a/crypto_sign/rainbowIa-classic/clean/sign.c b/crypto_sign/rainbowIa-classic/clean/sign.c
index 82d2122d..cfc9280d 100644
--- a/crypto_sign/rainbowIa-classic/clean/sign.c
+++ b/crypto_sign/rainbowIa-classic/clean/sign.c
@@ -20,25 +20,25 @@ PQCLEAN_RAINBOWIACLASSIC_CLEAN_crypto_sign_keypair(unsigned char *pk, unsigned c
     unsigned char sk_seed[LEN_SKSEED] = {0};
     randombytes( sk_seed, LEN_SKSEED );
 
-    #if defined _RAINBOW_CLASSIC
+//    #if defined _RAINBOW_CLASSIC
 
     PQCLEAN_RAINBOWIACLASSIC_CLEAN_generate_keypair( (pk_t *) pk, (sk_t *) sk, sk_seed );
 
-    #elif defined _RAINBOW_CYCLIC
+//   #elif defined _RAINBOW_CYCLIC
 
-    unsigned char pk_seed[LEN_PKSEED] = {0};
-    randombytes( pk_seed, LEN_PKSEED );
-    generate_keypair_cyclic( (cpk_t *) pk, (sk_t *) sk, pk_seed, sk_seed );
+//   unsigned char pk_seed[LEN_PKSEED] = {0};
+//   randombytes( pk_seed, LEN_PKSEED );
+//   generate_keypair_cyclic( (cpk_t *) pk, (sk_t *) sk, pk_seed, sk_seed );
 
-    #elif defined _RAINBOW_CYCLIC_COMPRESSED
+//   #elif defined _RAINBOW_CYCLIC_COMPRESSED
 
-    unsigned char pk_seed[LEN_PKSEED] = {0};
-    randombytes( pk_seed, LEN_PKSEED );
-    generate_compact_keypair_cyclic( (cpk_t *) pk, (csk_t *) sk, pk_seed, sk_seed );
+//   unsigned char pk_seed[LEN_PKSEED] = {0};
+//   randombytes( pk_seed, LEN_PKSEED );
+//   generate_compact_keypair_cyclic( (cpk_t *) pk, (csk_t *) sk, pk_seed, sk_seed );
 
-    #else
-    error here
-    #endif
+//   #else
+//   error here
+//   #endif
     return 0;
 }
 
@@ -55,21 +55,21 @@ PQCLEAN_RAINBOWIACLASSIC_CLEAN_crypto_sign(unsigned char *sm, size_t *smlen, con
     memcpy( sm, m, mlen );
     smlen[0] = mlen + _SIGNATURE_BYTE;
 
-    #if defined _RAINBOW_CLASSIC
+//    #if defined _RAINBOW_CLASSIC
 
     return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_sign( sm + mlen, (const sk_t *)sk, digest );
 
-    #elif defined _RAINBOW_CYCLIC
+//   #elif defined _RAINBOW_CYCLIC
 
-    return rainbow_sign( sm + mlen, (const sk_t *)sk, digest );
+//   return rainbow_sign( sm + mlen, (const sk_t *)sk, digest );
 
-    #elif defined _RAINBOW_CYCLIC_COMPRESSED
+//   #elif defined _RAINBOW_CYCLIC_COMPRESSED
 
-    return rainbow_sign_cyclic( sm + mlen, (const csk_t *)sk, digest );
+//   return rainbow_sign_cyclic( sm + mlen, (const csk_t *)sk, digest );
 
-    #else
-    error here
-    #endif
+//   #else
+//   error here
+//   #endif
 
 
 }
@@ -91,21 +91,21 @@ PQCLEAN_RAINBOWIACLASSIC_CLEAN_crypto_sign_open(unsigned char *m, size_t *mlen,
     unsigned char digest[_HASH_LEN];
     PQCLEAN_RAINBOWIACLASSIC_CLEAN_hash_msg( digest, _HASH_LEN, m, *mlen );
 
-    #if defined _RAINBOW_CLASSIC
+//    #if defined _RAINBOW_CLASSIC
 
     return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify( digest, sm + mlen[0], (const pk_t *)pk );
 
-    #elif defined _RAINBOW_CYCLIC
+//   #elif defined _RAINBOW_CYCLIC
 
-    return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sm + mlen[0], (const cpk_t *)pk );
+//   return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sm + mlen[0], (const cpk_t *)pk );
 
-    #elif defined _RAINBOW_CYCLIC_COMPRESSED
+//   #elif defined _RAINBOW_CYCLIC_COMPRESSED
 
-    return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sm + mlen[0], (const cpk_t *)pk );
+//   return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sm + mlen[0], (const cpk_t *)pk );
 
-    #else
-    error here
-    #endif
+//   #else
+//   error here
+//   #endif
 
 
 }
@@ -117,15 +117,15 @@ int PQCLEAN_RAINBOWIACLASSIC_CLEAN_crypto_sign_signature(
 
     PQCLEAN_RAINBOWIACLASSIC_CLEAN_hash_msg( digest, _HASH_LEN, m, mlen );
     *siglen = _SIGNATURE_BYTE;
-    #if defined _RAINBOW_CLASSIC
+    // #if defined _RAINBOW_CLASSIC
     return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_sign( sig, (const sk_t *)sk, digest );
-    #elif defined _RAINBOW_CYCLIC
-    return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_sign( sig, (const sk_t *)sk, digest );
-    #elif defined _RAINBOW_CYCLIC_COMPRESSED
-    return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_sign_cyclic( sig, (const csk_t *)sk, digest );
-    #else
-    error here
-    #endif
+    //  #elif defined _RAINBOW_CYCLIC
+    //  return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_sign( sig, (const sk_t *)sk, digest );
+    //  #elif defined _RAINBOW_CYCLIC_COMPRESSED
+    //  return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_sign_cyclic( sig, (const csk_t *)sk, digest );
+    //  #else
+    //  error here
+    //  #endif
 
 }
 
@@ -137,14 +137,14 @@ int PQCLEAN_RAINBOWIACLASSIC_CLEAN_crypto_sign_verify(
     }
     unsigned char digest[_HASH_LEN];
     PQCLEAN_RAINBOWIACLASSIC_CLEAN_hash_msg( digest, _HASH_LEN, m, mlen );
-    #if defined _RAINBOW_CLASSIC
+    // #if defined _RAINBOW_CLASSIC
     return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify( digest, sig, (const pk_t *)pk );
-    #elif defined _RAINBOW_CYCLIC
-    return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sig, (const cpk_t *)pk );
-    #elif defined _RAINBOW_CYCLIC_COMPRESSED
-    return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sig, (const cpk_t *)pk );
-    #else
-    error here
-    #endif
+    //  #elif defined _RAINBOW_CYCLIC
+    //  return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sig, (const cpk_t *)pk );
+    //  #elif defined _RAINBOW_CYCLIC_COMPRESSED
+    //  return PQCLEAN_RAINBOWIACLASSIC_CLEAN_rainbow_verify_cyclic( digest, sig, (const cpk_t *)pk );
+    //  #else
+    //  error here
+    //  #endif
 
 }
diff --git a/crypto_sign/rainbowIa-classic/clean/utils_hash.c b/crypto_sign/rainbowIa-classic/clean/utils_hash.c
index 1b072a3c..8c9e3aab 100644
--- a/crypto_sign/rainbowIa-classic/clean/utils_hash.c
+++ b/crypto_sign/rainbowIa-classic/clean/utils_hash.c
@@ -4,24 +4,21 @@
 ///
 
 #include "hash_len_config.h"
+#include "rainbow_config.h"
 #include "sha2.h"
 #include "utils_hash.h"
 
-#ifndef _HASH_LEN
-#define _HASH_LEN (32)
-#endif
-
 static inline
 int _hash( unsigned char *digest, const unsigned char *m, unsigned long long mlen ) {
-    #if 32 == _HASH_LEN
+//    #if 32 == _HASH_LEN
     sha256(digest, m, mlen);
-    #elif 48 == _HASH_LEN
-    sha384(digest, m, mlen);
-    #elif 64 == _HASH_LEN
-    sha512(digest, m, mlen);
-    #else
-#error "unsupported _HASH_LEN"
-    #endif
+//    #elif 48 == _HASH_LEN
+//    sha384(digest, m, mlen);
+//    #elif 64 == _HASH_LEN
+//    sha512(digest, m, mlen);
+//    #else
+//#error "unsupported _HASH_LEN"
+//    #endif
     return 0;
 }
 
diff --git a/crypto_sign/rainbowIa-classic/clean/utils_hash.h b/crypto_sign/rainbowIa-classic/clean/utils_hash.h
index 2aeffde4..ba234866 100644
--- a/crypto_sign/rainbowIa-classic/clean/utils_hash.h
+++ b/crypto_sign/rainbowIa-classic/clean/utils_hash.h
@@ -1,9 +1,9 @@
+#ifndef _UTILS_HASH_H_
+#define _UTILS_HASH_H_
 /// @file utils_hash.h
 /// @brief the interface for adapting hash functions.
 ///
 ///
-#ifndef _UTILS_HASH_H_
-#define _UTILS_HASH_H_
 
 // for the definition of _HASH_LEN.
 #include "hash_len_config.h"
diff --git a/crypto_sign/rainbowIa-classic/clean/utils_prng.h b/crypto_sign/rainbowIa-classic/clean/utils_prng.h
index 6c1f93a9..86f9ea5b 100644
--- a/crypto_sign/rainbowIa-classic/clean/utils_prng.h
+++ b/crypto_sign/rainbowIa-classic/clean/utils_prng.h
@@ -1,10 +1,10 @@
+#ifndef _UTILS_PRNG_H_
+#define _UTILS_PRNG_H_
 /// @file utils_prng.h
 /// @brief the interface for adapting PRNG functions.
 ///
 ///
 
-#ifndef _UTILS_PRNG_H_
-#define _UTILS_PRNG_H_
 
 #include "randombytes.h"