[mirror_edk2.git] / CryptoPkg / Library / BaseCryptLib / Pk / CryptPkcs7.c

/** @file\r
  PKCS#7 SignedData Verification Wrapper Implementation over OpenSSL.\r
\r
Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include "InternalCryptLib.h"\r
\r
#include <openssl/objects.h>\r
#include <openssl/x509.h>\r
#include <openssl/pkcs7.h>\r
\r
UINT8 mOidValue[9] = { 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x07, 0x02 };\r
\r
/**\r
  Verification callback function to override any existing callbacks in OpenSSL\r
  for intermediate certificate supports.\r
\r
  @param[in]  Status   Original status before calling this callback.\r
  @param[in]  Context  X509 store context.\r
\r
  @retval     1        Current X509 certificate is verified successfully.\r
  @retval     0        Verification failed.\r
\r
**/\r
int\r
X509VerifyCb (\r
  IN int            Status,\r
  IN X509_STORE_CTX *Context\r
  )\r
{\r
  X509_OBJECT  *Obj;\r
  INTN         Error;\r
  INTN         Index;\r
  INTN         Count;\r
\r
  Obj   = NULL;\r
  Error = (INTN) X509_STORE_CTX_get_error (Context);\r
\r
  //\r
  // X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT and X509_V_ERR_UNABLE_TO_GET_ISSUER_\r
  // CERT_LOCALLY mean a X509 certificate is not self signed and its issuer\r
  // can not be found in X509_verify_cert of X509_vfy.c.\r
  // In order to support intermediate certificate node, we override the\r
  // errors if the certification is obtained from X509 store, i.e. it is\r
  // a trusted ceritifcate node that is enrolled by user.\r
  // Besides,X509_V_ERR_CERT_UNTRUSTED and X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE\r
  // are also ignored to enable such feature.\r
  //\r
  if ((Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT) ||\r
      (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY)) {\r
    Obj = (X509_OBJECT *) OPENSSL_malloc (sizeof (X509_OBJECT));\r
    if (Obj == NULL) {\r
      return 0;\r
    }\r
\r
    Obj->type      = X509_LU_X509;\r
    Obj->data.x509 = Context->current_cert;\r
\r
    CRYPTO_w_lock (CRYPTO_LOCK_X509_STORE);\r
\r
    if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
      Status = 1;\r
    } else {\r
      //\r
      // If any certificate in the chain is enrolled as trusted certificate,\r
      // pass the certificate verification.\r
      //\r
      if (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {\r
        Count = (INTN) sk_X509_num (Context->chain);\r
        for (Index = 0; Index < Count; Index++) {\r
          Obj->data.x509 = sk_X509_value (Context->chain, (int) Index);\r
          if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
            Status = 1;\r
            break;\r
          }\r
        }\r
      }\r
    }\r
\r
    CRYPTO_w_unlock (CRYPTO_LOCK_X509_STORE);\r
  }\r
\r
  if ((Error == X509_V_ERR_CERT_UNTRUSTED) ||\r
      (Error == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE)) {\r
    Status = 1;\r
  }\r
\r
  if (Obj != NULL) {\r
    OPENSSL_free (Obj);\r
  }\r
\r
  return Status;\r
}\r
\r
/**\r
  Creates a PKCS#7 signedData as described in "PKCS #7: Cryptographic Message\r
  Syntax Standard, version 1.5". This interface is only intended to be used for\r
  application to perform PKCS#7 functionality validation.\r
\r
  @param[in]  PrivateKey       Pointer to the PEM-formatted private key data for\r
                               data signing.\r
  @param[in]  PrivateKeySize   Size of the PEM private key data in bytes.\r
  @param[in]  KeyPassword      NULL-terminated passphrase used for encrypted PEM\r
                               key data.\r
  @param[in]  InData           Pointer to the content to be signed.\r
  @param[in]  InDataSize       Size of InData in bytes.\r
  @param[in]  SignCert         Pointer to signer's DER-encoded certificate to sign with.\r
  @param[in]  OtherCerts       Pointer to an optional additional set of certificates to\r
                               include in the PKCS#7 signedData (e.g. any intermediate\r
                               CAs in the chain).\r
  @param[out] SignedData       Pointer to output PKCS#7 signedData.\r
  @param[out] SignedDataSize   Size of SignedData in bytes.\r
\r
  @retval     TRUE             PKCS#7 data signing succeeded.\r
  @retval     FALSE            PKCS#7 data signing failed.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
Pkcs7Sign (\r
  IN   CONST UINT8  *PrivateKey,\r
  IN   UINTN        PrivateKeySize,\r
  IN   CONST UINT8  *KeyPassword,\r
  IN   UINT8        *InData,\r
  IN   UINTN        InDataSize,\r
  IN   UINT8        *SignCert,\r
  IN   UINT8        *OtherCerts      OPTIONAL,\r
  OUT  UINT8        **SignedData,\r
  OUT  UINTN        *SignedDataSize\r
  )\r
{\r
  BOOLEAN   Status;\r
  EVP_PKEY  *Key;\r
  BIO       *DataBio;\r
  PKCS7     *Pkcs7;\r
  UINT8     *RsaContext;\r
  UINT8     *P7Data;\r
  UINTN     P7DataSize;\r
  UINT8     *Tmp;\r
\r
  //\r
  // Check input parameters.\r
  //\r
  if ((PrivateKey == NULL) || (KeyPassword == NULL) || (InData == NULL)) {\r
    return FALSE;\r
  }\r
  \r
  if ((SignCert == NULL) || (SignedData == NULL) || (SignedDataSize == NULL)) {\r
    return FALSE;\r
  }\r
\r
  if (InDataSize > INT_MAX) {\r
    return FALSE;\r
  }\r
\r
  RsaContext = NULL;\r
  Key        = NULL;\r
  Pkcs7      = NULL;\r
  DataBio    = NULL;\r
  Status     = FALSE;\r
\r
  //\r
  // Retrieve RSA private key from PEM data.\r
  //\r
  Status = RsaGetPrivateKeyFromPem (\r
             PrivateKey,\r
             PrivateKeySize,\r
             (CONST CHAR8 *) KeyPassword,\r
             (VOID **) &RsaContext\r
             );\r
  if (!Status) {\r
    return Status;\r
  }\r
\r
  //\r
  // Register & Initialize necessary digest algorithms and PRNG for PKCS#7 Handling\r
  //\r
  EVP_add_digest (EVP_md5());\r
  EVP_add_digest (EVP_sha1());\r
  EVP_add_digest (EVP_sha256());\r
  RandomSeed (NULL, 0);\r
\r
  //\r
  // Construct OpenSSL EVP_PKEY for private key.\r
  //\r
  Key = EVP_PKEY_new ();\r
  if (Key == NULL) {\r
    goto _Exit;\r
  }\r
  Key->save_type = EVP_PKEY_RSA;\r
  Key->type      = EVP_PKEY_type (EVP_PKEY_RSA);\r
  Key->pkey.rsa  = (RSA *) RsaContext;\r
\r
  //\r
  // Convert the data to be signed to BIO format. \r
  //\r
  DataBio = BIO_new (BIO_s_mem ());\r
  BIO_write (DataBio, InData, (int) InDataSize);\r
\r
  //\r
  // Create the PKCS#7 signedData structure.\r
  //\r
  Pkcs7 = PKCS7_sign (\r
            (X509 *) SignCert,\r
            Key,\r
            (STACK_OF(X509) *) OtherCerts,\r
            DataBio,\r
            PKCS7_BINARY | PKCS7_NOATTR | PKCS7_DETACHED\r
            );\r
  if (Pkcs7 == NULL) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Convert PKCS#7 signedData structure into DER-encoded buffer.\r
  //\r
  P7DataSize = i2d_PKCS7 (Pkcs7, NULL);\r
  if (P7DataSize <= 19) {\r
    goto _Exit;\r
  }\r
  P7Data     = OPENSSL_malloc (P7DataSize);\r
  Tmp        = P7Data;\r
  P7DataSize = i2d_PKCS7 (Pkcs7, (unsigned char **) &Tmp);\r
\r
  //\r
  // Strip ContentInfo to content only for signeddata. The data be trimmed off\r
  // is totally 19 bytes.\r
  //\r
  *SignedDataSize = P7DataSize - 19;\r
  *SignedData     = OPENSSL_malloc (*SignedDataSize);\r
  CopyMem (*SignedData, P7Data + 19, *SignedDataSize);\r
  \r
  OPENSSL_free (P7Data);\r
\r
  Status = TRUE;\r
\r
_Exit:\r
  //\r
  // Release Resources\r
  //\r
  if (RsaContext != NULL) {\r
    RsaFree (RsaContext);\r
    if (Key != NULL) {\r
      Key->pkey.rsa = NULL;\r
    }\r
  }\r
\r
  if (Key != NULL) {\r
    EVP_PKEY_free (Key);\r
  }\r
\r
  if (DataBio != NULL) {\r
    BIO_free (DataBio);\r
  }\r
\r
  if (Pkcs7 != NULL) {\r
    PKCS7_free (Pkcs7);\r
  }\r
\r
  return Status;\r
}\r
\r
/**\r
  Verifies the validility of a PKCS#7 signed data as described in "PKCS #7:\r
  Cryptographic Message Syntax Standard". The input signed data could be wrapped\r
  in a ContentInfo structure.\r
\r
  If P7Data is NULL, then ASSERT().\r
\r
  @param[in]  P7Data       Pointer to the PKCS#7 message to verify.\r
  @param[in]  P7Length     Length of the PKCS#7 message in bytes.\r
  @param[in]  TrustedCert  Pointer to a trusted/root certificate encoded in DER, which\r
                           is used for certificate chain verification.\r
  @param[in]  CertLength   Length of the trusted certificate in bytes.\r
  @param[in]  InData       Pointer to the content to be verified.\r
  @param[in]  DataLength   Length of InData in bytes.\r
\r
  @retval  TRUE  The specified PKCS#7 signed data is valid.\r
  @retval  FALSE Invalid PKCS#7 signed data.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
Pkcs7Verify (\r
  IN  CONST UINT8  *P7Data,\r
  IN  UINTN        P7Length,\r
  IN  CONST UINT8  *TrustedCert,\r
  IN  UINTN        CertLength,\r
  IN  CONST UINT8  *InData,\r
  IN  UINTN        DataLength\r
  )\r
{\r
  PKCS7       *Pkcs7;\r
  BIO         *CertBio;\r
  BIO         *DataBio;\r
  BOOLEAN     Status;\r
  X509        *Cert;\r
  X509_STORE  *CertStore;\r
  UINT8       *SignedData;\r
  UINT8       *Temp;\r
  UINTN       SignedDataSize;\r
  BOOLEAN     Wrapped;\r
\r
  //\r
  // ASSERT if P7Data is NULL or P7Length is not larger than 19 bytes.\r
  //\r
  ASSERT ((P7Data != NULL) || (P7Length <= 19));\r
\r
  if ((CertLength > INT_MAX) || (DataLength > INT_MAX)) {\r
    return FALSE;\r
  }\r
\r
  Status    = FALSE;\r
  Pkcs7     = NULL;\r
  CertBio   = NULL;\r
  DataBio   = NULL;\r
  Cert      = NULL;\r
  CertStore = NULL;\r
\r
  //\r
  // Register & Initialize necessary digest algorithms for PKCS#7 Handling\r
  //\r
  EVP_add_digest (EVP_md5());\r
  EVP_add_digest (EVP_sha1());\r
  EVP_add_digest_alias (SN_sha1WithRSAEncryption, SN_sha1WithRSA);\r
  EVP_add_digest (EVP_sha256());\r
\r
  //\r
  // Check whether input P7Data is a wrapped ContentInfo structure or not.\r
  //\r
  Wrapped = FALSE;\r
  if ((P7Data[4] == 0x06) && (P7Data[5] == 0x09)) {\r
    if (CompareMem (P7Data + 6, mOidValue, sizeof (mOidValue)) == 0) {\r
      if ((P7Data[15] == 0xA0) && (P7Data[16] == 0x82)) {\r
        Wrapped = TRUE;\r
      }\r
    }\r
  }\r
\r
  if (Wrapped) {\r
    SignedData     = (UINT8 *) P7Data;\r
    SignedDataSize = P7Length;\r
  } else {\r
    //\r
    // Wrap PKCS#7 signeddata to a ContentInfo structure - add a header in 19 bytes.\r
    //\r
    SignedDataSize = P7Length + 19;\r
    SignedData     = OPENSSL_malloc (SignedDataSize);\r
    if (SignedData == NULL) {\r
      return FALSE;\r
    }\r
\r
    //\r
    // Part1: 0x30, 0x82.\r
    //\r
    SignedData[0] = 0x30;\r
    SignedData[1] = 0x82;\r
\r
    //\r
    // Part2: Length1 = P7Length + 19 - 4, in big endian.\r
    //\r
    SignedData[2] = (UINT8) (((UINT16) (SignedDataSize - 4)) >> 8);\r
    SignedData[3] = (UINT8) (((UINT16) (SignedDataSize - 4)) & 0xff);\r
\r
    //\r
    // Part3: 0x06, 0x09.\r
    //\r
    SignedData[4] = 0x06;\r
    SignedData[5] = 0x09;\r
\r
    //\r
    // Part4: OID value -- 0x2A 0x86 0x48 0x86 0xF7 0x0D 0x01 0x07 0x02.\r
    //\r
    CopyMem (SignedData + 6, mOidValue, sizeof (mOidValue));\r
\r
    //\r
    // Part5: 0xA0, 0x82.\r
    //\r
    SignedData[15] = 0xA0;\r
    SignedData[16] = 0x82;\r
\r
    //\r
    // Part6: Length2 = P7Length, in big endian.\r
    //\r
    SignedData[17] = (UINT8) (((UINT16) P7Length) >> 8);\r
    SignedData[18] = (UINT8) (((UINT16) P7Length) & 0xff);\r
\r
    //\r
    // Part7: P7Data.\r
    //\r
    CopyMem (SignedData + 19, P7Data, P7Length);\r
  }\r
  \r
  //\r
  // Retrieve PKCS#7 Data (DER encoding)\r
  //\r
  if (SignedDataSize > INT_MAX) {\r
    goto _Exit;\r
  }\r
\r
  Temp = SignedData;\r
  Pkcs7 = d2i_PKCS7 (NULL, (const unsigned char **) &Temp, (int) SignedDataSize);\r
  if (Pkcs7 == NULL) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Check if it's PKCS#7 Signed Data (for Authenticode Scenario)\r
  //\r
  if (!PKCS7_type_is_signed (Pkcs7)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Read DER-encoded root certificate and Construct X509 Certificate\r
  //\r
  CertBio = BIO_new (BIO_s_mem ());\r
  BIO_write (CertBio, TrustedCert, (int)CertLength);\r
  if (CertBio == NULL) {\r
    goto _Exit;\r
  }\r
  Cert = d2i_X509_bio (CertBio, NULL);\r
  if (Cert == NULL) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Setup X509 Store for trusted certificate\r
  //\r
  CertStore = X509_STORE_new ();\r
  if (CertStore == NULL) {\r
    goto _Exit;\r
  }\r
  if (!(X509_STORE_add_cert (CertStore, Cert))) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Register customized X509 verification callback function to support\r
  // trusted intermediate certificate anchor.\r
  //\r
  CertStore->verify_cb = X509VerifyCb;\r
\r
  //\r
  // For generic PKCS#7 handling, InData may be NULL if the content is present\r
  // in PKCS#7 structure. So ignore NULL checking here.\r
  //\r
  DataBio = BIO_new (BIO_s_mem ());\r
  BIO_write (DataBio, InData, (int)DataLength);\r
\r
  //\r
  // Verifies the PKCS#7 signedData structure\r
  //\r
  Status = (BOOLEAN) PKCS7_verify (Pkcs7, NULL, CertStore, DataBio, NULL, PKCS7_BINARY);\r
\r
_Exit:\r
  //\r
  // Release Resources\r
  //\r
  BIO_free (DataBio);\r
  BIO_free (CertBio);\r
  X509_free (Cert);\r
  X509_STORE_free (CertStore);\r
  PKCS7_free (Pkcs7);\r
\r
  if (!Wrapped) {\r
    OPENSSL_free (SignedData);\r
  }\r
\r
  return Status;\r
}\r
Commit	Line	Data
97f98500 HT	1	/** @file\r
	2	PKCS#7 SignedData Verification Wrapper Implementation over OpenSSL.\r
	3	\r
b7d320f8	4	Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
97f98500 HT	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
a8c44645	15	#include "InternalCryptLib.h"\r
97f98500	16	\r
97f98500 HT	17	#include <openssl/objects.h>\r
	18	#include <openssl/x509.h>\r
	19	#include <openssl/pkcs7.h>\r
	20	\r
da9e7418	21	UINT8 mOidValue[9] = { 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x07, 0x02 };\r
97f98500	22	\r
b7d320f8	23	/**\r
	24	Verification callback function to override any existing callbacks in OpenSSL\r
	25	for intermediate certificate supports.\r
	26	\r
	27	@param[in] Status Original status before calling this callback.\r
	28	@param[in] Context X509 store context.\r
	29	\r
	30	@retval 1 Current X509 certificate is verified successfully.\r
	31	@retval 0 Verification failed.\r
	32	\r
	33	**/\r
55581f95	34	int\r
	35	X509VerifyCb (\r
	36	IN int Status,\r
	37	IN X509_STORE_CTX *Context\r
	38	)\r
b7d320f8	39	{\r
b7d320f8	40	X509_OBJECT *Obj;\r
55581f95	41	INTN Error;\r
	42	INTN Index;\r
	43	INTN Count;\r
b7d320f8	44	\r
b7d320f8	45	Obj = NULL;\r
55581f95	46	Error = (INTN) X509_STORE_CTX_get_error (Context);\r
b7d320f8	47	\r
	48	//\r
	49	// X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT and X509_V_ERR_UNABLE_TO_GET_ISSUER_\r
	50	// CERT_LOCALLY mean a X509 certificate is not self signed and its issuer\r
	51	// can not be found in X509_verify_cert of X509_vfy.c.\r
	52	// In order to support intermediate certificate node, we override the\r
	53	// errors if the certification is obtained from X509 store, i.e. it is\r
	54	// a trusted ceritifcate node that is enrolled by user.\r
	55	// Besides,X509_V_ERR_CERT_UNTRUSTED and X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE\r
	56	// are also ignored to enable such feature.\r
	57	//\r
	58	if ((Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT) \|\|\r
	59	(Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY)) {\r
	60	Obj = (X509_OBJECT *) OPENSSL_malloc (sizeof (X509_OBJECT));\r
	61	if (Obj == NULL) {\r
	62	return 0;\r
	63	}\r
	64	\r
	65	Obj->type = X509_LU_X509;\r
	66	Obj->data.x509 = Context->current_cert;\r
	67	\r
	68	CRYPTO_w_lock (CRYPTO_LOCK_X509_STORE);\r
	69	\r
	70	if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
	71	Status = 1;\r
	72	} else {\r
	73	//\r
	74	// If any certificate in the chain is enrolled as trusted certificate,\r
	75	// pass the certificate verification.\r
	76	//\r
	77	if (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {\r
55581f95	78	Count = (INTN) sk_X509_num (Context->chain);\r
b7d320f8	79	for (Index = 0; Index < Count; Index++) {\r
55581f95	80	Obj->data.x509 = sk_X509_value (Context->chain, (int) Index);\r
b7d320f8	81	if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
	82	Status = 1;\r
	83	break;\r
	84	}\r
	85	}\r
	86	}\r
	87	}\r
	88	\r
	89	CRYPTO_w_unlock (CRYPTO_LOCK_X509_STORE);\r
	90	}\r
	91	\r
	92	if ((Error == X509_V_ERR_CERT_UNTRUSTED) \|\|\r
	93	(Error == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE)) {\r
	94	Status = 1;\r
	95	}\r
	96	\r
	97	if (Obj != NULL) {\r
	98	OPENSSL_free (Obj);\r
	99	}\r
	100	\r
	101	return Status;\r
	102	}\r
	103	\r
	104	/**\r
	105	Creates a PKCS#7 signedData as described in "PKCS #7: Cryptographic Message\r
	106	Syntax Standard, version 1.5". This interface is only intended to be used for\r
	107	application to perform PKCS#7 functionality validation.\r
	108	\r
	109	@param[in] PrivateKey Pointer to the PEM-formatted private key data for\r
	110	data signing.\r
	111	@param[in] PrivateKeySize Size of the PEM private key data in bytes.\r
	112	@param[in] KeyPassword NULL-terminated passphrase used for encrypted PEM\r
	113	key data.\r
	114	@param[in] InData Pointer to the content to be signed.\r
	115	@param[in] InDataSize Size of InData in bytes.\r
	116	@param[in] SignCert Pointer to signer's DER-encoded certificate to sign with.\r
	117	@param[in] OtherCerts Pointer to an optional additional set of certificates to\r
	118	include in the PKCS#7 signedData (e.g. any intermediate\r
	119	CAs in the chain).\r
	120	@param[out] SignedData Pointer to output PKCS#7 signedData.\r
	121	@param[out] SignedDataSize Size of SignedData in bytes.\r
	122	\r
	123	@retval TRUE PKCS#7 data signing succeeded.\r
	124	@retval FALSE PKCS#7 data signing failed.\r
	125	\r
	126	**/\r
	127	BOOLEAN\r
	128	EFIAPI\r
	129	Pkcs7Sign (\r
	130	IN CONST UINT8 *PrivateKey,\r
	131	IN UINTN PrivateKeySize,\r
	132	IN CONST UINT8 *KeyPassword,\r
	133	IN UINT8 *InData,\r
	134	IN UINTN InDataSize,\r
	135	IN UINT8 *SignCert,\r
	136	IN UINT8 *OtherCerts OPTIONAL,\r
	137	OUT UINT8 **SignedData,\r
	138	OUT UINTN *SignedDataSize\r
	139	)\r
	140	{\r
	141	BOOLEAN Status;\r
	142	EVP_PKEY *Key;\r
	143	BIO *DataBio;\r
	144	PKCS7 *Pkcs7;\r
145	UINT8 *RsaContext;\r
146	UINT8 *P7Data;\r
da9e7418	147	UINTN P7DataSize;\r
da9e7418	148	UINT8 *Tmp;\r
b7d320f8	149	\r
	150	//\r
	151	// Check input parameters.\r
	152	//\r
	153	if ((PrivateKey == NULL) \|\| (KeyPassword == NULL) \|\| (InData == NULL)) {\r
	154	return FALSE;\r
	155	}\r
	156	\r
	157	if ((SignCert == NULL) \|\| (SignedData == NULL) \|\| (SignedDataSize == NULL)) {\r
	158	return FALSE;\r
	159	}\r
	160	\r
da9e7418	161	if (InDataSize > INT_MAX) {\r
	162	return FALSE;\r
	163	}\r
	164	\r
b7d320f8	165	RsaContext = NULL;\r
	166	Key = NULL;\r
	167	Pkcs7 = NULL;\r
	168	DataBio = NULL;\r
	169	Status = FALSE;\r
	170	\r
	171	//\r
	172	// Retrieve RSA private key from PEM data.\r
	173	//\r
	174	Status = RsaGetPrivateKeyFromPem (\r
	175	PrivateKey,\r
	176	PrivateKeySize,\r
	177	(CONST CHAR8 *) KeyPassword,\r
	178	(VOID **) &RsaContext\r
	179	);\r
	180	if (!Status) {\r
	181	return Status;\r
	182	}\r
	183	\r
	184	//\r
	185	// Register & Initialize necessary digest algorithms and PRNG for PKCS#7 Handling\r
	186	//\r
	187	EVP_add_digest (EVP_md5());\r
	188	EVP_add_digest (EVP_sha1());\r
	189	EVP_add_digest (EVP_sha256());\r
	190	RandomSeed (NULL, 0);\r
	191	\r
	192	//\r
	193	// Construct OpenSSL EVP_PKEY for private key.\r
	194	//\r
	195	Key = EVP_PKEY_new ();\r
	196	if (Key == NULL) {\r
	197	goto _Exit;\r
	198	}\r
	199	Key->save_type = EVP_PKEY_RSA;\r
	200	Key->type = EVP_PKEY_type (EVP_PKEY_RSA);\r
	201	Key->pkey.rsa = (RSA *) RsaContext;\r
	202	\r
	203	//\r
	204	// Convert the data to be signed to BIO format. \r
	205	//\r
	206	DataBio = BIO_new (BIO_s_mem ());\r
	207	BIO_write (DataBio, InData, (int) InDataSize);\r
	208	\r
	209	//\r
	210	// Create the PKCS#7 signedData structure.\r
	211	//\r
	212	Pkcs7 = PKCS7_sign (\r
	213	(X509 *) SignCert,\r
	214	Key,\r
	215	(STACK_OF(X509) *) OtherCerts,\r
	216	DataBio,\r
55581f95	217	PKCS7_BINARY \| PKCS7_NOATTR \| PKCS7_DETACHED\r
b7d320f8	218	);\r
	219	if (Pkcs7 == NULL) {\r
	220	goto _Exit;\r
	221	}\r
	222	\r
	223	//\r
	224	// Convert PKCS#7 signedData structure into DER-encoded buffer.\r
	225	//\r
da9e7418	226	P7DataSize = i2d_PKCS7 (Pkcs7, NULL);\r
da9e7418	227	if (P7DataSize <= 19) {\r
b7d320f8	228	goto _Exit;\r
b7d320f8	229	}\r
da9e7418	230	P7Data = OPENSSL_malloc (P7DataSize);\r
	231	Tmp = P7Data;\r
	232	P7DataSize = i2d_PKCS7 (Pkcs7, (unsigned char **) &Tmp);\r
	233	\r
	234	//\r
	235	// Strip ContentInfo to content only for signeddata. The data be trimmed off\r
	236	// is totally 19 bytes.\r
	237	//\r
	238	*SignedDataSize = P7DataSize - 19;\r
b7d320f8	239	SignedData = OPENSSL_malloc (SignedDataSize);\r
da9e7418	240	CopyMem (SignedData, P7Data + 19, SignedDataSize);\r
	241	\r
	242	OPENSSL_free (P7Data);\r
b7d320f8	243	\r
	244	Status = TRUE;\r
	245	\r
	246	_Exit:\r
	247	//\r
	248	// Release Resources\r
	249	//\r
	250	if (RsaContext != NULL) {\r
	251	RsaFree (RsaContext);\r
	252	if (Key != NULL) {\r
	253	Key->pkey.rsa = NULL;\r
	254	}\r
	255	}\r
	256	\r
	257	if (Key != NULL) {\r
	258	EVP_PKEY_free (Key);\r
	259	}\r
	260	\r
	261	if (DataBio != NULL) {\r
	262	BIO_free (DataBio);\r
	263	}\r
	264	\r
	265	if (Pkcs7 != NULL) {\r
	266	PKCS7_free (Pkcs7);\r
	267	}\r
	268	\r
	269	return Status;\r
	270	}\r
	271	\r
97f98500	272	/**\r
da9e7418	273	Verifies the validility of a PKCS#7 signed data as described in "PKCS #7:\r
	274	Cryptographic Message Syntax Standard". The input signed data could be wrapped\r
	275	in a ContentInfo structure.\r
97f98500 HT	276	\r
	277	If P7Data is NULL, then ASSERT().\r
	278	\r
	279	@param[in] P7Data Pointer to the PKCS#7 message to verify.\r
	280	@param[in] P7Length Length of the PKCS#7 message in bytes.\r
	281	@param[in] TrustedCert Pointer to a trusted/root certificate encoded in DER, which\r
	282	is used for certificate chain verification.\r
	283	@param[in] CertLength Length of the trusted certificate in bytes.\r
	284	@param[in] InData Pointer to the content to be verified.\r
	285	@param[in] DataLength Length of InData in bytes.\r
	286	\r
a8c44645	287	@retval TRUE The specified PKCS#7 signed data is valid.\r
a8c44645	288	@retval FALSE Invalid PKCS#7 signed data.\r
97f98500 HT	289	\r
	290	**/\r
	291	BOOLEAN\r
	292	EFIAPI\r
	293	Pkcs7Verify (\r
	294	IN CONST UINT8 *P7Data,\r
	295	IN UINTN P7Length,\r
	296	IN CONST UINT8 *TrustedCert,\r
	297	IN UINTN CertLength,\r
	298	IN CONST UINT8 *InData,\r
	299	IN UINTN DataLength\r
	300	)\r
	301	{\r
	302	PKCS7 *Pkcs7;\r
97f98500 HT	303	BIO *CertBio;\r
	304	BIO *DataBio;\r
	305	BOOLEAN Status;\r
	306	X509 *Cert;\r
	307	X509_STORE *CertStore;\r
da9e7418	308	UINT8 *SignedData;\r
	309	UINT8 *Temp;\r
	310	UINTN SignedDataSize;\r
	311	BOOLEAN Wrapped;\r
97f98500 HT	312	\r
97f98500 HT	313	//\r
da9e7418	314	// ASSERT if P7Data is NULL or P7Length is not larger than 19 bytes.\r
97f98500	315	//\r
da9e7418	316	ASSERT ((P7Data != NULL) \|\| (P7Length <= 19));\r
	317	\r
	318	if ((CertLength > INT_MAX) \|\| (DataLength > INT_MAX)) {\r
	319	return FALSE;\r
	320	}\r
97f98500 HT	321	\r
	322	Status = FALSE;\r
	323	Pkcs7 = NULL;\r
	324	CertBio = NULL;\r
	325	DataBio = NULL;\r
	326	Cert = NULL;\r
	327	CertStore = NULL;\r
	328	\r
	329	//\r
	330	// Register & Initialize necessary digest algorithms for PKCS#7 Handling\r
	331	//\r
	332	EVP_add_digest (EVP_md5());\r
	333	EVP_add_digest (EVP_sha1());\r
b7d320f8	334	EVP_add_digest_alias (SN_sha1WithRSAEncryption, SN_sha1WithRSA);\r
97f98500 HT	335	EVP_add_digest (EVP_sha256());\r
97f98500 HT	336	\r
da9e7418	337	//\r
	338	// Check whether input P7Data is a wrapped ContentInfo structure or not.\r
	339	//\r
	340	Wrapped = FALSE;\r
	341	if ((P7Data[4] == 0x06) && (P7Data[5] == 0x09)) {\r
	342	if (CompareMem (P7Data + 6, mOidValue, sizeof (mOidValue)) == 0) {\r
	343	if ((P7Data[15] == 0xA0) && (P7Data[16] == 0x82)) {\r
	344	Wrapped = TRUE;\r
	345	}\r
	346	}\r
	347	}\r
	348	\r
	349	if (Wrapped) {\r
	350	SignedData = (UINT8 *) P7Data;\r
	351	SignedDataSize = P7Length;\r
	352	} else {\r
	353	//\r
	354	// Wrap PKCS#7 signeddata to a ContentInfo structure - add a header in 19 bytes.\r
	355	//\r
	356	SignedDataSize = P7Length + 19;\r
	357	SignedData = OPENSSL_malloc (SignedDataSize);\r
	358	if (SignedData == NULL) {\r
	359	return FALSE;\r
	360	}\r
	361	\r
	362	//\r
	363	// Part1: 0x30, 0x82.\r
	364	//\r
	365	SignedData[0] = 0x30;\r
	366	SignedData[1] = 0x82;\r
	367	\r
	368	//\r
	369	// Part2: Length1 = P7Length + 19 - 4, in big endian.\r
	370	//\r
	371	SignedData[2] = (UINT8) (((UINT16) (SignedDataSize - 4)) >> 8);\r
	372	SignedData[3] = (UINT8) (((UINT16) (SignedDataSize - 4)) & 0xff);\r
	373	\r
	374	//\r
	375	// Part3: 0x06, 0x09.\r
	376	//\r
	377	SignedData[4] = 0x06;\r
	378	SignedData[5] = 0x09;\r
	379	\r
	380	//\r
	381	// Part4: OID value -- 0x2A 0x86 0x48 0x86 0xF7 0x0D 0x01 0x07 0x02.\r
	382	//\r
	383	CopyMem (SignedData + 6, mOidValue, sizeof (mOidValue));\r
	384	\r
	385	//\r
	386	// Part5: 0xA0, 0x82.\r
	387	//\r
	388	SignedData[15] = 0xA0;\r
	389	SignedData[16] = 0x82;\r
	390	\r
	391	//\r
	392	// Part6: Length2 = P7Length, in big endian.\r
	393	//\r
	394	SignedData[17] = (UINT8) (((UINT16) P7Length) >> 8);\r
	395	SignedData[18] = (UINT8) (((UINT16) P7Length) & 0xff);\r
	396	\r
	397	//\r
	398	// Part7: P7Data.\r
	399	//\r
	400	CopyMem (SignedData + 19, P7Data, P7Length);\r
401	}\r
402	\r
97f98500 HT	403	//\r
	404	// Retrieve PKCS#7 Data (DER encoding)\r
	405	//\r
da9e7418	406	if (SignedDataSize > INT_MAX) {\r
	407	goto _Exit;\r
	408	}\r
	409	\r
	410	Temp = SignedData;\r
421fb3b5	411	Pkcs7 = d2i_PKCS7 (NULL, (const unsigned char **) &Temp, (int) SignedDataSize);\r
97f98500 HT	412	if (Pkcs7 == NULL) {\r
	413	goto _Exit;\r
	414	}\r
	415	\r
	416	//\r
	417	// Check if it's PKCS#7 Signed Data (for Authenticode Scenario)\r
	418	//\r
	419	if (!PKCS7_type_is_signed (Pkcs7)) {\r
	420	goto _Exit;\r
	421	}\r
	422	\r
97f98500 HT	423	//\r
	424	// Read DER-encoded root certificate and Construct X509 Certificate\r
	425	//\r
	426	CertBio = BIO_new (BIO_s_mem ());\r
	427	BIO_write (CertBio, TrustedCert, (int)CertLength);\r
	428	if (CertBio == NULL) {\r
	429	goto _Exit;\r
	430	}\r
	431	Cert = d2i_X509_bio (CertBio, NULL);\r
	432	if (Cert == NULL) {\r
	433	goto _Exit;\r
	434	}\r
	435	\r
	436	//\r
	437	// Setup X509 Store for trusted certificate\r
	438	//\r
	439	CertStore = X509_STORE_new ();\r
	440	if (CertStore == NULL) {\r
	441	goto _Exit;\r
	442	}\r
	443	if (!(X509_STORE_add_cert (CertStore, Cert))) {\r
	444	goto _Exit;\r
	445	}\r
	446	\r
b7d320f8	447	//\r
	448	// Register customized X509 verification callback function to support\r
	449	// trusted intermediate certificate anchor.\r
	450	//\r
	451	CertStore->verify_cb = X509VerifyCb;\r
	452	\r
97f98500 HT	453	//\r
	454	// For generic PKCS#7 handling, InData may be NULL if the content is present\r
	455	// in PKCS#7 structure. So ignore NULL checking here.\r
	456	//\r
	457	DataBio = BIO_new (BIO_s_mem ());\r
	458	BIO_write (DataBio, InData, (int)DataLength);\r
	459	\r
	460	//\r
	461	// Verifies the PKCS#7 signedData structure\r
	462	//\r
b7d320f8	463	Status = (BOOLEAN) PKCS7_verify (Pkcs7, NULL, CertStore, DataBio, NULL, PKCS7_BINARY);\r
97f98500 HT	464	\r
	465	_Exit:\r
	466	//\r
	467	// Release Resources\r
	468	//\r
	469	BIO_free (DataBio);\r
	470	BIO_free (CertBio);\r
	471	X509_free (Cert);\r
	472	X509_STORE_free (CertStore);\r
	473	PKCS7_free (Pkcs7);\r
	474	\r
da9e7418	475	if (!Wrapped) {\r
	476	OPENSSL_free (SignedData);\r
	477	}\r
	478	\r
97f98500 HT	479	return Status;\r
97f98500 HT	480	}\r