5b2956ea63
Signed-off-by: Ye Ting <ting.ye@intel.com> Reviewed-by: Long Qin <qin.long@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14528 6f19259b-4bc3-4df7-8a09-765794883524
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/** @file
|
|
PEM (Privacy Enhanced Mail) Format Handler Wrapper Implementation over OpenSSL.
|
|
|
|
Copyright (c) 2010 - 2013, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#include "InternalCryptLib.h"
|
|
#include <openssl/pem.h>
|
|
|
|
/**
|
|
Callback function for password phrase conversion used for retrieving the encrypted PEM.
|
|
|
|
@param[out] Buf Pointer to the buffer to write the passphrase to.
|
|
@param[in] Size Maximum length of the passphrase (i.e. the size of Buf).
|
|
@param[in] Flag A flag which is set to 0 when reading and 1 when writing.
|
|
@param[in] Key Key data to be passed to the callback routine.
|
|
|
|
@retval The number of characters in the passphrase or 0 if an error occurred.
|
|
|
|
**/
|
|
INTN
|
|
PasswordCallback (
|
|
OUT CHAR8 *Buf,
|
|
IN INTN Size,
|
|
IN INTN Flag,
|
|
IN VOID *Key
|
|
)
|
|
{
|
|
INTN KeyLength;
|
|
|
|
ZeroMem ((VOID *) Buf, (UINTN) Size);
|
|
if (Key != NULL) {
|
|
//
|
|
// Duplicate key phrase directly.
|
|
//
|
|
KeyLength = (INTN) AsciiStrLen ((CHAR8 *)Key);
|
|
KeyLength = (KeyLength > Size ) ? Size : KeyLength;
|
|
CopyMem (Buf, Key, (UINTN) KeyLength);
|
|
return KeyLength;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Retrieve the RSA Private Key from the password-protected PEM key data.
|
|
|
|
@param[in] PemData Pointer to the PEM-encoded key data to be retrieved.
|
|
@param[in] PemSize Size of the PEM key data in bytes.
|
|
@param[in] Password NULL-terminated passphrase used for encrypted PEM key data.
|
|
@param[out] RsaContext Pointer to new-generated RSA context which contain the retrieved
|
|
RSA private key component. Use RsaFree() function to free the
|
|
resource.
|
|
|
|
If PemData is NULL, then return FALSE.
|
|
If RsaContext is NULL, then return FALSE.
|
|
|
|
@retval TRUE RSA Private Key was retrieved successfully.
|
|
@retval FALSE Invalid PEM key data or incorrect password.
|
|
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
RsaGetPrivateKeyFromPem (
|
|
IN CONST UINT8 *PemData,
|
|
IN UINTN PemSize,
|
|
IN CONST CHAR8 *Password,
|
|
OUT VOID **RsaContext
|
|
)
|
|
{
|
|
BOOLEAN Status;
|
|
BIO *PemBio;
|
|
|
|
//
|
|
// Check input parameters.
|
|
//
|
|
if (PemData == NULL || RsaContext == NULL || PemSize > INT_MAX) {
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Add possible block-cipher descriptor for PEM data decryption.
|
|
// NOTE: Only support most popular ciphers (3DES, AES) for the encrypted PEM.
|
|
//
|
|
if (EVP_add_cipher (EVP_des_ede3_cbc ()) == 0) {
|
|
return FALSE;
|
|
}
|
|
if (EVP_add_cipher (EVP_aes_128_cbc ()) == 0) {
|
|
return FALSE;
|
|
}
|
|
if (EVP_add_cipher (EVP_aes_192_cbc ()) == 0) {
|
|
return FALSE;
|
|
}
|
|
if (EVP_add_cipher (EVP_aes_256_cbc ()) == 0) {
|
|
return FALSE;
|
|
}
|
|
|
|
Status = FALSE;
|
|
|
|
//
|
|
// Read encrypted PEM Data.
|
|
//
|
|
PemBio = BIO_new (BIO_s_mem ());
|
|
if (PemBio == NULL) {
|
|
goto _Exit;
|
|
}
|
|
|
|
if (BIO_write (PemBio, PemData, (int) PemSize) <= 0) {
|
|
goto _Exit;
|
|
}
|
|
|
|
//
|
|
// Retrieve RSA Private Key from encrypted PEM data.
|
|
//
|
|
*RsaContext = PEM_read_bio_RSAPrivateKey (PemBio, NULL, (pem_password_cb *) &PasswordCallback, (void *) Password);
|
|
if (*RsaContext != NULL) {
|
|
Status = TRUE;
|
|
}
|
|
|
|
_Exit:
|
|
//
|
|
// Release Resources.
|
|
//
|
|
BIO_free (PemBio);
|
|
|
|
return Status;
|
|
}
|