now with rsassa-pkcs1v15 (old rsa signatures) + many new things

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

diff --git a/rsa/rsa_basic.c b/rsa/rsa_basic.c
index a166dfa2384909d6e3b2ce8f90cd277ab0421b52..ffcd780e677a8741cf0a5ef5bfcdf95898529eae 100644 (file)
--- a/rsa/rsa_basic.c
+++ b/rsa/rsa_basic.c
@@ -32,7 +32,7 @@
 #include "string-extras.h"
 #endif
 
-void rsa_enc(bigint_t* data, rsa_publickey_t* key){
+void rsa_enc(bigint_t* data, const rsa_publickey_t* key){
 /*
        cli_putstr("\r\n -->rsa_enc()\r\n m = ");
        bigint_print_hex(data);
@@ -41,7 +41,7 @@ void rsa_enc(bigint_t* data, rsa_publickey_t* key){
        cli_putstr("\r\n n = ");
        bigint_print_hex(key->modulus);
 */
-       bigint_expmod_u(data, data, key->exponent, key->modulus);
+       bigint_expmod_u(data, data, &key->exponent, &key->modulus);
 }
 
 /*
@@ -52,47 +52,47 @@ h = (m1 - m2) * qinv % p
 m = m2 + q * h
 */
 
-uint8_t rsa_dec_crt_mono(bigint_t* data, rsa_privatekey_t* key){
+uint8_t rsa_dec_crt_mono(bigint_t* data, const rsa_privatekey_t* key){
        bigint_t m1, m2;
-       m1.wordv = malloc(key->components[0]->length_B * sizeof(bigint_word_t));
-       m2.wordv = malloc(key->components[1]->length_B * sizeof(bigint_word_t));
+       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);
+               free(m1.wordv);
                return 1;
        }
 #if DEBUG
        cli_putstr("\r\nDBG: expmod m1 ...");
 #endif
-       bigint_expmod_u(&m1, data, key->components[2], key->components[0]);
+       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_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]);
+               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]);
-       bigint_mul_u(data, data, key->components[1]);
+       bigint_reduce(&m1, &key->components[0]);
+       bigint_mul_u(data, &m1, &key->components[4]);
+       bigint_reduce(data, &key->components[0]);
+       bigint_mul_u(data, data, &key->components[1]);
        bigint_add_u(data, data, &m2);
-       free(m1.wordv);
        free(m2.wordv);
+       free(m1.wordv);
        return 0;
 }
 
-uint8_t rsa_dec(bigint_t* data, rsa_privatekey_t* key){
+uint8_t rsa_dec(bigint_t* data, const rsa_privatekey_t* key){
        if(key->n == 1){
-               bigint_expmod_u(data, data, key->components[0], key->modulus);
+               bigint_expmod_u(data, data, &key->components[0], &key->modulus);
                return 0;
        }
        if(key->n == 5){
@@ -139,6 +139,7 @@ void rsa_os2ip(bigint_t* dest, const void* data, uint32_t length_B){
        cli_hexdump_rev(&(dest->length_B), 2);
 #endif
 #endif
+       dest->info = 0;
        bigint_changeendianess(dest);
        bigint_adjust(dest);
 }