a lot of fixing ...

[arm-crypto-lib.git] / rsa / rsa_basic.c

diff --git a/rsa/rsa_basic.c b/rsa/rsa_basic.c
index d152be2fb735e36093e81831411ad6f2f208a809..38c46a1f630fb68dd0fc78dc429fc12ea61198c1 100644 (file)
--- a/rsa/rsa_basic.c
+++ b/rsa/rsa_basic.c
@@ -21,11 +21,21 @@
 #include <stdlib.h>
 #include <string.h>
 #include "bigint.h"
+#include "bigint_io.h"
 #include "rsa_basic.h"
 
 #include "cli.h"
+#include "uart_lowlevel.h"
 
 void rsa_enc(bigint_t* data, rsa_publickey_t* key){
+/*
+       cli_putstr("\r\n -->rsa_enc()\r\n m = ");
+       bigint_print_hex(data);
+       cli_putstr("\r\n e = ");
+       bigint_print_hex(key->exponent);
+       cli_putstr("\r\n n = ");
+       bigint_print_hex(key->modulus);
+*/
        bigint_expmod_u(data, data, key->exponent, key->modulus);
 }
 
@@ -42,6 +52,7 @@ uint8_t rsa_dec_crt_mono(bigint_t* data, rsa_privatekey_t* key){
        m1.wordv = malloc(key->components[0]->length_B * sizeof(bigint_word_t));
        m2.wordv = malloc(key->components[1]->length_B * sizeof(bigint_word_t));
        if(!m1.wordv || !m2.wordv){
+               cli_putstr("\r\nERROR: OOM!");
                free(m1.wordv);
                free(m2.wordv);
                return 1;
@@ -52,6 +63,7 @@ uint8_t rsa_dec_crt_mono(bigint_t* data, rsa_privatekey_t* key){
        while(BIGINT_NEG_MASK & m1.info){
                bigint_add_s(&m1, &m1, key->components[0]);
        }
+
        bigint_reduce(&m1, key->components[0]);
        bigint_mul_u(data, &m1, key->components[4]);
        bigint_reduce(data, key->components[0]);