+threefish256 decryption

[avr-crypto-lib.git] / threefish512_enc.c

diff --git a/threefish512_enc.c b/threefish512_enc.c
index abb8509e91bb75782e74c9555db5588e20c35dc2..fb044b59e2c57a24669a3ce29464cc804267ad08 100644 (file)
--- a/threefish512_enc.c
+++ b/threefish512_enc.c
@@ -66,7 +66,7 @@ void permute_inv8(void* data){
 #define K(s) (((uint64_t*)key)[(s)])
 #define T(s) (((uint64_t*)tweak)[(s)])
 
-void threefish512_init(void* key, void* tweak, threefish512_ctx_t* ctx){
+void threefish512_init(const void* key, const void* tweak, threefish512_ctx_t* ctx){
        memcpy(ctx->k, key, 8*8);
        memcpy(ctx->t, tweak, 2*8);
        uint8_t i;
@@ -78,7 +78,7 @@ void threefish512_init(void* key, void* tweak, threefish512_ctx_t* ctx){
 }
 
 static
-void add_key_8(void* data, threefish512_ctx_t* ctx, uint8_t s){
+void add_key_8(void* data, const threefish512_ctx_t* ctx, uint8_t s){
        uint8_t i;
        for(i=0; i<5; ++i){
                X(i) += ctx->k[(s+i)%9];
@@ -88,7 +88,7 @@ void add_key_8(void* data, threefish512_ctx_t* ctx, uint8_t s){
        X(7) += ctx->k[(s+7)%9] + s;
 }
 
-void threefish512_enc(void* data, threefish512_ctx_t* ctx){
+void threefish512_enc(void* data, const threefish512_ctx_t* ctx){
        uint8_t i=0,s=0;
        uint8_t r0[8] = {38, 48, 34, 26, 33, 39, 29, 33}; 
        uint8_t r1[8] = {30, 20, 14, 12, 49, 27, 26, 51};