diff options
Diffstat (limited to 'CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7.c')
| -rw-r--r-- | CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7.c | 753 |
1 files changed, 0 insertions, 753 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7.c b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7.c deleted file mode 100644 index 218e7ac2ef..0000000000 --- a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7.c +++ /dev/null @@ -1,753 +0,0 @@ -/** @file
- PKCS#7 SignedData Verification Wrapper Implementation over OpenSSL.
-
- Caution: This module requires additional review when modified.
- This library will have external input - signature (e.g. UEFI Authenticated
- Variable). It may by input in SMM mode.
- This external input must be validated carefully to avoid security issue like
- buffer overflow, integer overflow.
-
- WrapPkcs7Data(), Pkcs7GetSigners(), Pkcs7Verify() will get UEFI Authenticated
- Variable and will do basic check for data structure.
-
-Copyright (c) 2009 - 2012, 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/objects.h>
-#include <openssl/x509.h>
-#include <openssl/pkcs7.h>
-
-UINT8 mOidValue[9] = { 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x07, 0x02 };
-
-/**
- Verification callback function to override any existing callbacks in OpenSSL
- for intermediate certificate supports.
-
- @param[in] Status Original status before calling this callback.
- @param[in] Context X509 store context.
-
- @retval 1 Current X509 certificate is verified successfully.
- @retval 0 Verification failed.
-
-**/
-int
-X509VerifyCb (
- IN int Status,
- IN X509_STORE_CTX *Context
- )
-{
- X509_OBJECT *Obj;
- INTN Error;
- INTN Index;
- INTN Count;
-
- Obj = NULL;
- Error = (INTN) X509_STORE_CTX_get_error (Context);
-
- //
- // X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT and X509_V_ERR_UNABLE_TO_GET_ISSUER_
- // CERT_LOCALLY mean a X509 certificate is not self signed and its issuer
- // can not be found in X509_verify_cert of X509_vfy.c.
- // In order to support intermediate certificate node, we override the
- // errors if the certification is obtained from X509 store, i.e. it is
- // a trusted ceritifcate node that is enrolled by user.
- // Besides,X509_V_ERR_CERT_UNTRUSTED and X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE
- // are also ignored to enable such feature.
- //
- if ((Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT) ||
- (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY)) {
- Obj = (X509_OBJECT *) malloc (sizeof (X509_OBJECT));
- if (Obj == NULL) {
- return 0;
- }
-
- Obj->type = X509_LU_X509;
- Obj->data.x509 = Context->current_cert;
-
- CRYPTO_w_lock (CRYPTO_LOCK_X509_STORE);
-
- if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {
- Status = 1;
- } else {
- //
- // If any certificate in the chain is enrolled as trusted certificate,
- // pass the certificate verification.
- //
- if (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {
- Count = (INTN) sk_X509_num (Context->chain);
- for (Index = 0; Index < Count; Index++) {
- Obj->data.x509 = sk_X509_value (Context->chain, (int) Index);
- if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {
- Status = 1;
- break;
- }
- }
- }
- }
-
- CRYPTO_w_unlock (CRYPTO_LOCK_X509_STORE);
- }
-
- if ((Error == X509_V_ERR_CERT_UNTRUSTED) ||
- (Error == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE)) {
- Status = 1;
- }
-
- if (Obj != NULL) {
- OPENSSL_free (Obj);
- }
-
- return Status;
-}
-
-/**
- Creates a PKCS#7 signedData as described in "PKCS #7: Cryptographic Message
- Syntax Standard, version 1.5". This interface is only intended to be used for
- application to perform PKCS#7 functionality validation.
-
- @param[in] PrivateKey Pointer to the PEM-formatted private key data for
- data signing.
- @param[in] PrivateKeySize Size of the PEM private key data in bytes.
- @param[in] KeyPassword NULL-terminated passphrase used for encrypted PEM
- key data.
- @param[in] InData Pointer to the content to be signed.
- @param[in] InDataSize Size of InData in bytes.
- @param[in] SignCert Pointer to signer's DER-encoded certificate to sign with.
- @param[in] OtherCerts Pointer to an optional additional set of certificates to
- include in the PKCS#7 signedData (e.g. any intermediate
- CAs in the chain).
- @param[out] SignedData Pointer to output PKCS#7 signedData.
- @param[out] SignedDataSize Size of SignedData in bytes.
-
- @retval TRUE PKCS#7 data signing succeeded.
- @retval FALSE PKCS#7 data signing failed.
-
-**/
-BOOLEAN
-EFIAPI
-Pkcs7Sign (
- IN CONST UINT8 *PrivateKey,
- IN UINTN PrivateKeySize,
- IN CONST UINT8 *KeyPassword,
- IN UINT8 *InData,
- IN UINTN InDataSize,
- IN UINT8 *SignCert,
- IN UINT8 *OtherCerts OPTIONAL,
- OUT UINT8 **SignedData,
- OUT UINTN *SignedDataSize
- )
-{
- BOOLEAN Status;
- EVP_PKEY *Key;
- BIO *DataBio;
- PKCS7 *Pkcs7;
- UINT8 *RsaContext;
- UINT8 *P7Data;
- UINTN P7DataSize;
- UINT8 *Tmp;
-
- //
- // Check input parameters.
- //
- if (PrivateKey == NULL || KeyPassword == NULL || InData == NULL ||
- SignCert == NULL || SignedData == NULL || SignedDataSize == NULL || InDataSize > INT_MAX) {
- return FALSE;
- }
-
- RsaContext = NULL;
- Key = NULL;
- Pkcs7 = NULL;
- DataBio = NULL;
- Status = FALSE;
-
- //
- // Retrieve RSA private key from PEM data.
- //
- Status = RsaGetPrivateKeyFromPem (
- PrivateKey,
- PrivateKeySize,
- (CONST CHAR8 *) KeyPassword,
- (VOID **) &RsaContext
- );
- if (!Status) {
- return Status;
- }
-
- //
- // Register & Initialize necessary digest algorithms and PRNG for PKCS#7 Handling
- //
- EVP_add_digest (EVP_md5());
- EVP_add_digest (EVP_sha1());
- EVP_add_digest (EVP_sha256());
- RandomSeed (NULL, 0);
-
- //
- // Construct OpenSSL EVP_PKEY for private key.
- //
- Key = EVP_PKEY_new ();
- if (Key == NULL) {
- Status = FALSE;
- goto _Exit;
- }
- Key->save_type = EVP_PKEY_RSA;
- Key->type = EVP_PKEY_type (EVP_PKEY_RSA);
- Key->pkey.rsa = (RSA *) RsaContext;
-
- //
- // Convert the data to be signed to BIO format.
- //
- DataBio = BIO_new (BIO_s_mem ());
- BIO_write (DataBio, InData, (int) InDataSize);
-
- //
- // Create the PKCS#7 signedData structure.
- //
- Pkcs7 = PKCS7_sign (
- (X509 *) SignCert,
- Key,
- (STACK_OF(X509) *) OtherCerts,
- DataBio,
- PKCS7_BINARY | PKCS7_NOATTR | PKCS7_DETACHED
- );
- if (Pkcs7 == NULL) {
- Status = FALSE;
- goto _Exit;
- }
-
- //
- // Convert PKCS#7 signedData structure into DER-encoded buffer.
- //
- P7DataSize = i2d_PKCS7 (Pkcs7, NULL);
- if (P7DataSize <= 19) {
- Status = FALSE;
- goto _Exit;
- }
-
- P7Data = malloc (P7DataSize);
- if (P7Data == NULL) {
- Status = FALSE;
- goto _Exit;
- }
-
- Tmp = P7Data;
- P7DataSize = i2d_PKCS7 (Pkcs7, (unsigned char **) &Tmp);
-
- //
- // Strip ContentInfo to content only for signeddata. The data be trimmed off
- // is totally 19 bytes.
- //
- *SignedDataSize = P7DataSize - 19;
- *SignedData = malloc (*SignedDataSize);
- if (*SignedData == NULL) {
- Status = FALSE;
- OPENSSL_free (P7Data);
- goto _Exit;
- }
-
- CopyMem (*SignedData, P7Data + 19, *SignedDataSize);
-
- OPENSSL_free (P7Data);
-
- Status = TRUE;
-
-_Exit:
- //
- // Release Resources
- //
- if (RsaContext != NULL) {
- RsaFree (RsaContext);
- if (Key != NULL) {
- Key->pkey.rsa = NULL;
- }
- }
-
- if (Key != NULL) {
- EVP_PKEY_free (Key);
- }
-
- if (DataBio != NULL) {
- BIO_free (DataBio);
- }
-
- if (Pkcs7 != NULL) {
- PKCS7_free (Pkcs7);
- }
-
- return Status;
-}
-
-/**
- Check input P7Data is a wrapped ContentInfo structure or not. If not construct
- a new structure to wrap P7Data.
-
- Caution: This function may receive untrusted input.
- UEFI Authenticated Variable is external input, so this function will do basic
- check for PKCS#7 data structure.
-
- @param[in] P7Data Pointer to the PKCS#7 message to verify.
- @param[in] P7Length Length of the PKCS#7 message in bytes.
- @param[out] WrapFlag If TRUE P7Data is a ContentInfo structure, otherwise
- return FALSE.
- @param[out] WrapData If return status of this function is TRUE:
- 1) when WrapFlag is TRUE, pointer to P7Data.
- 2) when WrapFlag is FALSE, pointer to a new ContentInfo
- structure. It's caller's responsibility to free this
- buffer.
- @param[out] WrapDataSize Length of ContentInfo structure in bytes.
-
- @retval TRUE The operation is finished successfully.
- @retval FALSE The operation is failed due to lack of resources.
-
-**/
-BOOLEAN
-WrapPkcs7Data (
- IN CONST UINT8 *P7Data,
- IN UINTN P7Length,
- OUT BOOLEAN *WrapFlag,
- OUT UINT8 **WrapData,
- OUT UINTN *WrapDataSize
- )
-{
- BOOLEAN Wrapped;
- UINT8 *SignedData;
-
- //
- // Check whether input P7Data is a wrapped ContentInfo structure or not.
- //
- Wrapped = FALSE;
- if ((P7Data[4] == 0x06) && (P7Data[5] == 0x09)) {
- if (CompareMem (P7Data + 6, mOidValue, sizeof (mOidValue)) == 0) {
- if ((P7Data[15] == 0xA0) && (P7Data[16] == 0x82)) {
- Wrapped = TRUE;
- }
- }
- }
-
- if (Wrapped) {
- *WrapData = (UINT8 *) P7Data;
- *WrapDataSize = P7Length;
- } else {
- //
- // Wrap PKCS#7 signeddata to a ContentInfo structure - add a header in 19 bytes.
- //
- *WrapDataSize = P7Length + 19;
- *WrapData = malloc (*WrapDataSize);
- if (*WrapData == NULL) {
- *WrapFlag = Wrapped;
- return FALSE;
- }
-
- SignedData = *WrapData;
-
- //
- // Part1: 0x30, 0x82.
- //
- SignedData[0] = 0x30;
- SignedData[1] = 0x82;
-
- //
- // Part2: Length1 = P7Length + 19 - 4, in big endian.
- //
- SignedData[2] = (UINT8) (((UINT16) (*WrapDataSize - 4)) >> 8);
- SignedData[3] = (UINT8) (((UINT16) (*WrapDataSize - 4)) & 0xff);
-
- //
- // Part3: 0x06, 0x09.
- //
- SignedData[4] = 0x06;
- SignedData[5] = 0x09;
-
- //
- // Part4: OID value -- 0x2A 0x86 0x48 0x86 0xF7 0x0D 0x01 0x07 0x02.
- //
- CopyMem (SignedData + 6, mOidValue, sizeof (mOidValue));
-
- //
- // Part5: 0xA0, 0x82.
- //
- SignedData[15] = 0xA0;
- SignedData[16] = 0x82;
-
- //
- // Part6: Length2 = P7Length, in big endian.
- //
- SignedData[17] = (UINT8) (((UINT16) P7Length) >> 8);
- SignedData[18] = (UINT8) (((UINT16) P7Length) & 0xff);
-
- //
- // Part7: P7Data.
- //
- CopyMem (SignedData + 19, P7Data, P7Length);
- }
-
- *WrapFlag = Wrapped;
- return TRUE;
-}
-
-/**
- Get the signer's certificates from PKCS#7 signed data as described in "PKCS #7:
- Cryptographic Message Syntax Standard". The input signed data could be wrapped
- in a ContentInfo structure.
-
- If P7Data, CertStack, StackLength, TrustedCert or CertLength is NULL, then
- return FALSE. If P7Length overflow, then return FAlSE.
-
- Caution: This function may receive untrusted input.
- UEFI Authenticated Variable is external input, so this function will do basic
- check for PKCS#7 data structure.
-
- @param[in] P7Data Pointer to the PKCS#7 message to verify.
- @param[in] P7Length Length of the PKCS#7 message in bytes.
- @param[out] CertStack Pointer to Signer's certificates retrieved from P7Data.
- It's caller's responsiblity to free the buffer.
- @param[out] StackLength Length of signer's certificates in bytes.
- @param[out] TrustedCert Pointer to a trusted certificate from Signer's certificates.
- It's caller's responsiblity to free the buffer.
- @param[out] CertLength Length of the trusted certificate in bytes.
-
- @retval TRUE The operation is finished successfully.
- @retval FALSE Error occurs during the operation.
-
-**/
-BOOLEAN
-EFIAPI
-Pkcs7GetSigners (
- IN CONST UINT8 *P7Data,
- IN UINTN P7Length,
- OUT UINT8 **CertStack,
- OUT UINTN *StackLength,
- OUT UINT8 **TrustedCert,
- OUT UINTN *CertLength
- )
-{
- PKCS7 *Pkcs7;
- BOOLEAN Status;
- UINT8 *SignedData;
- UINT8 *Temp;
- UINTN SignedDataSize;
- BOOLEAN Wrapped;
- STACK_OF(X509) *Stack;
- UINT8 Index;
- UINT8 *CertBuf;
- UINT8 *OldBuf;
- UINTN BufferSize;
- UINTN OldSize;
- UINT8 *SingleCert;
- UINTN SingleCertSize;
-
- if ((P7Data == NULL) || (CertStack == NULL) || (StackLength == NULL) ||
- (TrustedCert == NULL) || (CertLength == NULL) || (P7Length > INT_MAX)) {
- return FALSE;
- }
-
- Status = WrapPkcs7Data (P7Data, P7Length, &Wrapped, &SignedData, &SignedDataSize);
- if (!Status) {
- return Status;
- }
-
- Status = FALSE;
- Pkcs7 = NULL;
- Stack = NULL;
- CertBuf = NULL;
- OldBuf = NULL;
- SingleCert = NULL;
-
- //
- // Retrieve PKCS#7 Data (DER encoding)
- //
- if (SignedDataSize > INT_MAX) {
- goto _Exit;
- }
-
- Temp = SignedData;
- Pkcs7 = d2i_PKCS7 (NULL, (const unsigned char **) &Temp, (int) SignedDataSize);
- if (Pkcs7 == NULL) {
- goto _Exit;
- }
-
- //
- // Check if it's PKCS#7 Signed Data (for Authenticode Scenario)
- //
- if (!PKCS7_type_is_signed (Pkcs7)) {
- goto _Exit;
- }
-
- Stack = PKCS7_get0_signers(Pkcs7, NULL, PKCS7_BINARY);
- if (Stack == NULL) {
- goto _Exit;
- }
-
- //
- // Convert CertStack to buffer in following format:
- // UINT8 CertNumber;
- // UINT32 Cert1Length;
- // UINT8 Cert1[];
- // UINT32 Cert2Length;
- // UINT8 Cert2[];
- // ...
- // UINT32 CertnLength;
- // UINT8 Certn[];
- //
- BufferSize = sizeof (UINT8);
- OldSize = BufferSize;
-
- for (Index = 0; ; Index++) {
- Status = X509PopCertificate (Stack, &SingleCert, &SingleCertSize);
- if (!Status) {
- break;
- }
-
- OldSize = BufferSize;
- OldBuf = CertBuf;
- BufferSize = OldSize + SingleCertSize + sizeof (UINT32);
- CertBuf = malloc (BufferSize);
-
- if (CertBuf == NULL) {
- goto _Exit;
- }
-
- if (OldBuf != NULL) {
- CopyMem (CertBuf, OldBuf, OldSize);
- free (OldBuf);
- OldBuf = NULL;
- }
-
- WriteUnaligned32 ((UINT32 *) (CertBuf + OldSize), (UINT32) SingleCertSize);
- CopyMem (CertBuf + OldSize + sizeof (UINT32), SingleCert, SingleCertSize);
-
- free (SingleCert);
- SingleCert = NULL;
- }
-
- if (CertBuf != NULL) {
- //
- // Update CertNumber.
- //
- CertBuf[0] = Index;
-
- *CertLength = BufferSize - OldSize - sizeof (UINT32);
- *TrustedCert = malloc (*CertLength);
- if (*TrustedCert == NULL) {
- goto _Exit;
- }
-
- CopyMem (*TrustedCert, CertBuf + OldSize + sizeof (UINT32), *CertLength);
- *CertStack = CertBuf;
- *StackLength = BufferSize;
- Status = TRUE;
- }
-
-_Exit:
- //
- // Release Resources
- //
- if (!Wrapped) {
- free (SignedData);
- }
-
- if (Pkcs7 != NULL) {
- PKCS7_free (Pkcs7);
- }
-
- if (Stack != NULL) {
- sk_X509_pop_free(Stack, X509_free);
- }
-
- if (SingleCert != NULL) {
- free (SingleCert);
- }
-
- if (!Status && (CertBuf != NULL)) {
- free (CertBuf);
- *CertStack = NULL;
- }
-
- if (OldBuf != NULL) {
- free (OldBuf);
- }
-
- return Status;
-}
-
-/**
- Wrap function to use free() to free allocated memory for certificates.
-
- @param[in] Certs Pointer to the certificates to be freed.
-
-**/
-VOID
-EFIAPI
-Pkcs7FreeSigners (
- IN UINT8 *Certs
- )
-{
- if (Certs == NULL) {
- return;
- }
-
- free (Certs);
-}
-
-/**
- Verifies the validility of a PKCS#7 signed data as described in "PKCS #7:
- Cryptographic Message Syntax Standard". The input signed data could be wrapped
- in a ContentInfo structure.
-
- If P7Data, TrustedCert or InData is NULL, then return FALSE.
- If P7Length, CertLength or DataLength overflow, then return FAlSE.
-
- Caution: This function may receive untrusted input.
- UEFI Authenticated Variable is external input, so this function will do basic
- check for PKCS#7 data structure.
-
- @param[in] P7Data Pointer to the PKCS#7 message to verify.
- @param[in] P7Length Length of the PKCS#7 message in bytes.
- @param[in] TrustedCert Pointer to a trusted/root certificate encoded in DER, which
- is used for certificate chain verification.
- @param[in] CertLength Length of the trusted certificate in bytes.
- @param[in] InData Pointer to the content to be verified.
- @param[in] DataLength Length of InData in bytes.
-
- @retval TRUE The specified PKCS#7 signed data is valid.
- @retval FALSE Invalid PKCS#7 signed data.
-
-**/
-BOOLEAN
-EFIAPI
-Pkcs7Verify (
- IN CONST UINT8 *P7Data,
- IN UINTN P7Length,
- IN CONST UINT8 *TrustedCert,
- IN UINTN CertLength,
- IN CONST UINT8 *InData,
- IN UINTN DataLength
- )
-{
- PKCS7 *Pkcs7;
- BIO *CertBio;
- BIO *DataBio;
- BOOLEAN Status;
- X509 *Cert;
- X509_STORE *CertStore;
- UINT8 *SignedData;
- UINT8 *Temp;
- UINTN SignedDataSize;
- BOOLEAN Wrapped;
-
- //
- // Check input parameters.
- //
- if (P7Data == NULL || TrustedCert == NULL || InData == NULL ||
- P7Length > INT_MAX || CertLength > INT_MAX || DataLength > INT_MAX) {
- return FALSE;
- }
-
- Pkcs7 = NULL;
- CertBio = NULL;
- DataBio = NULL;
- Cert = NULL;
- CertStore = NULL;
-
- //
- // Register & Initialize necessary digest algorithms for PKCS#7 Handling
- //
- EVP_add_digest (EVP_md5());
- EVP_add_digest (EVP_sha1());
- EVP_add_digest_alias (SN_sha1WithRSAEncryption, SN_sha1WithRSA);
- EVP_add_digest (EVP_sha256());
-
- Status = WrapPkcs7Data (P7Data, P7Length, &Wrapped, &SignedData, &SignedDataSize);
- if (!Status) {
- return Status;
- }
-
- Status = FALSE;
-
- //
- // Retrieve PKCS#7 Data (DER encoding)
- //
- if (SignedDataSize > INT_MAX) {
- goto _Exit;
- }
-
- Temp = SignedData;
- Pkcs7 = d2i_PKCS7 (NULL, (const unsigned char **) &Temp, (int) SignedDataSize);
- if (Pkcs7 == NULL) {
- goto _Exit;
- }
-
- //
- // Check if it's PKCS#7 Signed Data (for Authenticode Scenario)
- //
- if (!PKCS7_type_is_signed (Pkcs7)) {
- goto _Exit;
- }
-
- //
- // Read DER-encoded root certificate and Construct X509 Certificate
- //
- CertBio = BIO_new (BIO_s_mem ());
- BIO_write (CertBio, TrustedCert, (int)CertLength);
- if (CertBio == NULL) {
- goto _Exit;
- }
- Cert = d2i_X509_bio (CertBio, NULL);
- if (Cert == NULL) {
- goto _Exit;
- }
-
- //
- // Setup X509 Store for trusted certificate
- //
- CertStore = X509_STORE_new ();
- if (CertStore == NULL) {
- goto _Exit;
- }
- if (!(X509_STORE_add_cert (CertStore, Cert))) {
- goto _Exit;
- }
-
- //
- // Register customized X509 verification callback function to support
- // trusted intermediate certificate anchor.
- //
- CertStore->verify_cb = X509VerifyCb;
-
- //
- // For generic PKCS#7 handling, InData may be NULL if the content is present
- // in PKCS#7 structure. So ignore NULL checking here.
- //
- DataBio = BIO_new (BIO_s_mem ());
- BIO_write (DataBio, InData, (int)DataLength);
-
- //
- // Verifies the PKCS#7 signedData structure
- //
- Status = (BOOLEAN) PKCS7_verify (Pkcs7, NULL, CertStore, DataBio, NULL, PKCS7_BINARY);
-
-_Exit:
- //
- // Release Resources
- //
- BIO_free (DataBio);
- BIO_free (CertBio);
- X509_free (Cert);
- X509_STORE_free (CertStore);
- PKCS7_free (Pkcs7);
-
- if (!Wrapped) {
- OPENSSL_free (SignedData);
- }
-
- return Status;
-}
|