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rsa: Fix two errors in the implementation 

1. Failure to set the return code correctly
2. Failure to detect the loop end condition when the value is equal to
the modulus.

Reported-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Signed-off-by: Simon Glass <sjg@chromium.org>
utp
Simon Glass 2014-07-30 10:00:17 -06:00 committed by Tom Rini
parent 8ac22a60e2
commit 5426716231
2 changed files with 3 additions and 2 deletions
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1
lib/rsa/rsa-sign.c
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@ -76,6 +76,7 @@ static int rsa_get_pub_key(const char *keydir, const char *name, RSA **rsap)
rsa = EVP_PKEY_get1_RSA(key);
if (!rsa) {
rsa_err("Couldn't convert to a RSA style key");
ret = -EINVAL;
goto err_rsa;
}
fclose(f);

4
lib/rsa/rsa-verify.c
View File

@ -57,9 +57,9 @@ static void subtract_modulus(const struct rsa_public_key *key, uint32_t num[])
static int greater_equal_modulus(const struct rsa_public_key *key,
uint32_t num[])
{
uint32_t i;
int i;
for (i = key->len - 1; i >= 0; i--) {
for (i = (int)key->len - 1; i >= 0; i--) {
if (num[i] < key->modulus[i])
return 0;
if (num[i] > key->modulus[i])