return 1;
}
uint16_t buffer_len = bigint_length_B(key->modulus);
+/*
cli_putstr("\r\n buffer_len = ");
cli_hexdump_rev(&buffer_len, 2);
cli_putstr("\r\n modulus_len = ");
cli_hexdump_rev(&key->modulus->length_B, 2);
+*/
uint8_t* buffer = (uint8_t*)dest;
uint8_t off;
/* the following needs some explanation:
% (sizeof(bigint_word_t));
buffer += off;
buffer_len -= off;
- cli_putstr("\r\n off = ");
- cli_hexdump_byte(off);
+// cli_putstr("\r\n off = ");
+// cli_hexdump_byte(off);
uint8_t* seed_buffer = buffer + 1;
uint16_t db_len = buffer_len - hv_len - 1;
uint8_t* db = seed_buffer + hv_len;
seed_buffer[i] = prng_get_byte();
}
}
- cli_putstr("\r\n msg (raw, pre-feistel):\r\n");
- cli_hexdump_block(dest, bigint_length_B(key->modulus), 4, 16);
+// cli_putstr("\r\n msg (raw, pre-feistel):\r\n");
+// cli_hexdump_block(dest, bigint_length_B(key->modulus), 4, 16);
p->mgf(maskbuffer, seed_buffer, hv_len, db_len, p->mgf_parameter);
memxor(db, maskbuffer, db_len);
p->mgf(maskbuffer, db, db_len, hv_len, p->mgf_parameter);
memxor(seed_buffer, maskbuffer, hv_len);
- cli_putstr("\r\n msg (raw, post-feistel):\r\n");
- cli_hexdump_block(dest, bigint_length_B(key->modulus), 4, 16);
+// cli_putstr("\r\n msg (raw, post-feistel):\r\n");
+// cli_hexdump_block(dest, bigint_length_B(key->modulus), 4, 16);
x.wordv = dest;
x.length_B = key->modulus->length_B;
rsa_privatekey_t* key, const rsa_oaep_parameter_t *p,
const rsa_label_t* label, void* seed){
- cli_putstr("\r\n -->rsa_decrypt_oaep()"); uart_flush(0);
+// cli_putstr("\r\n -->rsa_decrypt_oaep()"); uart_flush(0);
if(!label){
label = &rsa_oaep_default_label;
}
memset(dest, 0, bigint_length_B(key->modulus) - length_B);
memcpy((uint8_t*)dest + bigint_length_B(key->modulus) - length_B, src, length_B);
- cli_putc('a'); uart_flush(0);
+// cli_putc('a'); uart_flush(0);
x.wordv = dest;
x.length_B = key->modulus->length_B;
bigint_adjust(&x);
- cli_putc('b'); uart_flush(0);
+// cli_putc('b'); uart_flush(0);
rsa_os2ip(&x, NULL, bigint_length_B(key->modulus));
- cli_putc('c'); uart_flush(0);
+// cli_putc('c'); uart_flush(0);
rsa_dec(&x, key);
- cli_putc('d'); uart_flush(0);
+// cli_putc('d'); uart_flush(0);
rsa_i2osp(NULL, &x, &data_len);
- cli_putstr("\r\n msg (raw, pre-move):\r\n");
- cli_hexdump_block(dest, bigint_length_B(key->modulus), 4, 16);
+// cli_putstr("\r\n msg (raw, pre-move):\r\n");
+// cli_hexdump_block(dest, bigint_length_B(key->modulus), 4, 16);
if(data_len > x_len){
return 7;
}
-
+/*
cli_putstr("\r\n moving some bytes; x_len = ");
cli_hexdump_rev(&x_len, 2);
cli_putstr(" data_len = ");
cli_hexdump_rev(&data_len, 2);
uart_flush(0);
-
+*/
if(x_len != data_len){
memmove((uint8_t*)dest + x_len - data_len, dest, data_len);
- cli_putstr(" (oh, not dead yet?!)");
- uart_flush(0);
+// cli_putstr(" (oh, not dead yet?!)");
+// uart_flush(0);
memset(dest, 0, x_len - data_len);
}
hfal_hash_mem(p->hf, label_hv, label->label, label->length_b);
/*
- if(buffer[0] != 0){
- return 1;
- }
-*/
cli_putstr("\r\n msg (raw, pre-feistel):\r\n");
cli_hexdump_block(seed_buffer, bigint_length_B(key->modulus), 4, 16);
-
uart_flush(0);
-
+*/
p->mgf(maskbuffer, db_buffer, db_len, hv_len, p->mgf_parameter);
memxor(seed_buffer, maskbuffer, hv_len);
p->mgf(maskbuffer, seed_buffer, hv_len, db_len, p->mgf_parameter);
memxor(db_buffer, maskbuffer, db_len);
if(memcmp(label_hv, db_buffer, hv_len)){
- cli_putstr("\r\nDBG: DB:\r\n");
- cli_hexdump_block(db_buffer, db_len, 4, 16);
+// cli_putstr("\r\nDBG: DB:\r\n");
+// cli_hexdump_block(db_buffer, db_len, 4, 16);
return 2;
}