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Split up x509_parse_pkcs8_encrypted_der()

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This commit is contained in:
Manuel Pégourié-Gonnard 2013-07-04 11:08:31 +02:00
parent 416fa8fde5
commit a5d9974423
1 changed files with 30 additions and 12 deletions
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42
library/x509parse.c
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@ -2280,26 +2280,23 @@ static int x509parse_key_pkcs8_unencrypted_der(
}
/*
* Parse an encrypted PKCS#8 encoded private RSA key
* Decrypt the content of a PKCS#8 EncryptedPrivateKeyInfo
*/
static int x509parse_key_pkcs8_encrypted_der(
rsa_context *rsa,
const unsigned char *key,
size_t keylen,
const unsigned char *pwd,
size_t pwdlen )
static int x509parse_pkcs8_decrypt( unsigned char *buf, size_t buflen,
size_t *used_len,
const unsigned char *key, size_t keylen,
const unsigned char *pwd, size_t pwdlen )
{
int ret;
size_t len;
unsigned char *p, *end;
x509_buf pbe_alg_oid, pbe_params;
unsigned char buf[2048];
#if defined(POLARSSL_PKCS12_C)
cipher_type_t cipher_alg;
md_type_t md_alg;
#endif
memset(buf, 0, 2048);
memset(buf, 0, buflen);
p = (unsigned char *) key;
end = p + keylen;
@ -2335,8 +2332,7 @@ static int x509parse_key_pkcs8_encrypted_der(
if( ( ret = asn1_get_tag( &p, end, &len, ASN1_OCTET_STRING ) ) != 0 )
return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret );
// buf has been sized to 2048 bytes
if( len > 2048 )
if( len > buflen )
return( POLARSSL_ERR_X509_INVALID_INPUT );
/*
@ -2389,7 +2385,29 @@ static int x509parse_key_pkcs8_encrypted_der(
#endif /* POLARSSL_PKCS5_C */
return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE );
return x509parse_key_pkcs8_unencrypted_der( rsa, buf, len );
*used_len = len;
return( 0 );
}
/*
* Parse an encrypted PKCS#8 encoded private RSA key
*/
static int x509parse_key_pkcs8_encrypted_der(
rsa_context *rsa,
const unsigned char *key, size_t keylen,
const unsigned char *pwd, size_t pwdlen )
{
int ret;
unsigned char buf[2048];
size_t len = 0;
if( ( ret = x509parse_pkcs8_decrypt( buf, sizeof( buf ), &len,
key, keylen, pwd, pwdlen ) ) != 0 )
{
return( ret );
}
return( x509parse_key_pkcs8_unencrypted_der( rsa, buf, len ) );
}
/*