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Move hash verification to separate function

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Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
This commit is contained in:
Dmitry Kasatkin 2014-01-24 14:42:22 +02:00
parent 6aabda5b65
commit 906861a308
1 changed files with 13 additions and 7 deletions
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20
src/libevm.c
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@ -456,11 +456,22 @@ static int get_hash_algo_from_sig(unsigned char *sig)
return -1; return -1;
} }
int verify_hash(const unsigned char *hash, int size, unsigned char *sig, int siglen)
{
char *key;
/* Determine what key to use for verification*/
key = params.keyfile ? : params.x509 ?
"/etc/keys/x509_evm.der" :
"/etc/keys/pubkey_evm.pem";
return params.verify_hash(hash, size, sig, siglen, key);
}
int ima_verify_signature(const char *file, unsigned char *sig, int siglen) int ima_verify_signature(const char *file, unsigned char *sig, int siglen)
{ {
unsigned char hash[64]; unsigned char hash[64];
int hashlen, sig_hash_algo; int hashlen, sig_hash_algo;
char *key;
if (sig[0] != 0x03) { if (sig[0] != 0x03) {
log_err("security.ima has no signature\n"); log_err("security.ima has no signature\n");
@ -493,10 +504,5 @@ int ima_verify_signature(const char *file, unsigned char *sig, int siglen)
} }
} }
/* Determine what key to use for verification*/ return verify_hash(hash, hashlen, sig + 1, siglen - 1);
key = params.keyfile ? : params.x509 ?
"/etc/keys/x509_evm.der" :
"/etc/keys/pubkey_evm.pem";
return params.verify_hash(hash, hashlen, sig + 1, siglen - 1, key);
} }