updated bigint & rsa

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

diff --git a/rsa/rsa_basic.c b/rsa/rsa_basic.c
index 38c46a1f630fb68dd0fc78dc429fc12ea61198c1..e71bc8cede1c23c3ff40aa3c2b8981d39fb84fdc 100644 (file)
--- a/rsa/rsa_basic.c
+++ b/rsa/rsa_basic.c
@@ -24,8 +24,12 @@
 #include "bigint_io.h"
 #include "rsa_basic.h"
 
+#define DEBUG 0
+
+#if DEBUG
 #include "cli.h"
 #include "uart_lowlevel.h"
+#endif
 
 void rsa_enc(bigint_t* data, rsa_publickey_t* key){
 /*
@@ -52,18 +56,29 @@ 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){
+#if DEBUG
                cli_putstr("\r\nERROR: OOM!");
+#endif
                free(m1.wordv);
                free(m2.wordv);
                return 1;
        }
+#if DEBUG
+       cli_putstr("\r\nDBG: expmod m1 ...");
+#endif
        bigint_expmod_u(&m1, data, key->components[2], key->components[0]);
+#if DEBUG
+       cli_putstr("expmod m2 ...");
+#endif
        bigint_expmod_u(&m2, data, key->components[3], key->components[1]);
        bigint_sub_s(&m1, &m1, &m2);
        while(BIGINT_NEG_MASK & m1.info){
                bigint_add_s(&m1, &m1, key->components[0]);
        }
 
+#if DEBUG
+       cli_putstr("\r\nDBG: reduce-mul ...");
+#endif
        bigint_reduce(&m1, key->components[0]);
        bigint_mul_u(data, &m1, key->components[4]);
        bigint_reduce(data, key->components[0]);