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rsa: Fix two errors in the implementation

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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>
This commit is contained in:
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])