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PKCS#5 v2 PBES2 support and use in PKCS#8 encrypted certificates

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The error code POLARSSL_ERR_X509_PASSWORD_MISMATCH is now properly
returned in case of an encryption failure in the padding. The
POLARSSL_ERR_X509_PASSWORD_REQUIRED error code is only returned for PEM
formatted private keys as for DER formatted ones it is impossible to
distinguish if a DER blob is PKCS#8 encrypted or not.
This commit is contained in:
Paul Bakker 2013-06-17 15:14:42 +02:00
parent 19bd297dc8
commit 1fd4321ba2
11 changed files with 380 additions and 10 deletions
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45
include/polarssl/pkcs5.h
View file

@ -31,6 +31,7 @@
#include <string.h>
#include "asn1.h"
#include "md.h"
#ifdef _MSC_VER
@ -40,12 +41,54 @@ typedef UINT32 uint32_t;
#include <inttypes.h>
#endif
#define POLARSSL_ERR_PKCS5_BAD_INPUT_DATA -0x007C /**< Bad input parameters to function. */
#define POLARSSL_ERR_PKCS5_BAD_INPUT_DATA -0x3f80 /**< Bad input parameters to function. */
#define POLARSSL_ERR_PKCS5_INVALID_FORMAT -0x3f00 /**< Unexpected ASN.1 data. */
#define POLARSSL_ERR_PKCS5_FEATURE_UNAVAILABLE -0x3e80 /**< Requested encryption or digest alg not available. */
#define POLARSSL_ERR_PKCS5_PASSWORD_MISMATCH -0x3e00 /**< Given private key password does not allow for correct decryption. */
#define PKCS5_DECRYPT 0
#define PKCS5_ENCRYPT 1
/*
* PKCS#5 OIDs
*/
#define OID_PKCS5 "\x2a\x86\x48\x86\xf7\x0d\x01\x05"
#define OID_PKCS5_PBES2 OID_PKCS5 "\x0d"
#define OID_PKCS5_PBKDF2 OID_PKCS5 "\x0c"
/*
* Encryption Algorithm OIDs
*/
#define OID_DES_CBC "\x2b\x0e\x03\x02\x07"
#define OID_DES_EDE3_CBC "\x2a\x86\x48\x86\xf7\x0d\x03\x07"
/*
* Digest Algorithm OIDs
*/
#define OID_HMAC_SHA1 "\x2a\x86\x48\x86\xf7\x0d\x02\x07"
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief PKCS#5 PBES2 function
*
* \param pbe_params the ASN.1 algorithm parameters
* \param mode either PKCS5_DECRYPT or PKCS5_ENCRYPT
* \param pwd password to use when generating key
* \param plen length of password
* \param data data to process
* \param datalen length of data
* \param output output buffer
*
* \returns 0 on success, or a PolarSSL error code if verification fails.
*/
int pkcs5_pbes2( asn1_buf *pbe_params, int mode,
const unsigned char *pwd, size_t pwdlen,
const unsigned char *data, size_t datalen,
unsigned char *output );
/**
* \brief PKCS#5 PBKDF2 using HMAC
*