[edk2-devel] [PATCH v3 1/1] CryptoPkg: BaseCryptLib: Add RSA PSS verify support

Yao, Jiewen jiewen.yao at intel.com
Wed May 5 02:08:44 UTC 2021


Reviewed-by: Jiewen Yao <jiewen.yao at intel.com>

> -----Original Message-----
> From: Agrawal, Sachin <sachin.agrawal at intel.com>
> Sent: Wednesday, May 5, 2021 1:55 AM
> To: devel at edk2.groups.io
> Cc: Yao, Jiewen <jiewen.yao at intel.com>; Wang, Jian J <jian.j.wang at intel.com>;
> Lu, XiaoyuX <xiaoyux.lu at intel.com>; Jiang, Guomin <guomin.jiang at intel.com>;
> Agrawal, Sachin <sachin.agrawal at intel.com>
> Subject: [PATCH v3 1/1] CryptoPkg: BaseCryptLib: Add RSA PSS verify support
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3314
> 
> This patch uses Openssl's EVP API's to perform RSASSA-PSS verification
> of a binary blob.
> 
> Cc: Jiewen Yao <jiewen.yao at intel.com>
> Cc: Jian J Wang <jian.j.wang at intel.com>
> Cc: Xiaoyu Lu <xiaoyux.lu at intel.com>
> Cc: Guomin Jiang <guomin.jiang at intel.com>
> 
> Signed-off-by: Sachin Agrawal <sachin.agrawal at intel.com>
> ---
> 
> Notes:
>     v3:
>      - Fixed gcc compilation error [CI System]
> 
>  CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPss.c                        | 146
> +++++++++++++++
>  CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssNull.c                    |  46 +++++
>  CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSign.c                    | 169
> +++++++++++++++++
>  CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSignNull.c                |  60 ++++++
>  CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssNull.c                |  46 +++++
>  CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssSignNull.c            |  60
> ++++++
>  CryptoPkg/Library/BaseCryptLibOnProtocolPpi/CryptLib.c                 |  66
> +++++++
>  CryptoPkg/Test/UnitTest/Library/BaseCryptLib/BaseCryptLibUnitTests.c   |   1 +
>  CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaPssTests.c             | 191
> ++++++++++++++++++++
>  CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaTests.c                |   2 +
>  CryptoPkg/Include/Library/BaseCryptLib.h                               |  74 ++++++++
>  CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf                        |   2 +
>  CryptoPkg/Library/BaseCryptLib/PeiCryptLib.inf                         |   2 +
>  CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf                     |   2 +
>  CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf                         |   2 +
>  CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf            |   2 +
>  CryptoPkg/Library/BaseCryptLibNull/BaseCryptLibNull.inf                |   2 +
>  CryptoPkg/Private/Protocol/Crypto.h                                    |  78 ++++++++
>  CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLib.h        |   3 +
>  CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibHost.inf  |   1 +
>  CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibShell.inf |   1 +
>  21 files changed, 956 insertions(+)
> 
> diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPss.c
> b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPss.c
> new file mode 100644
> index 000000000000..af7cdafa4c47
> --- /dev/null
> +++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPss.c
> @@ -0,0 +1,146 @@
> +/** @file
> +  RSA Asymmetric Cipher Wrapper Implementation over OpenSSL.
> +
> +  This file implements following APIs which provide basic capabilities for RSA:
> +  1) RsaPssVerify
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "InternalCryptLib.h"
> +
> +#include <openssl/bn.h>
> +#include <openssl/rsa.h>
> +#include <openssl/objects.h>
> +#include <openssl/evp.h>
> +
> +
> +/**
> +  Retrieve a pointer to EVP message digest object.
> +
> +  @param[in]  DigestLen   Length of the message digest.
> +
> +**/
> +STATIC
> +const
> +EVP_MD*
> +GetEvpMD (
> +  IN UINT16 DigestLen
> +  )
> +{
> +  switch (DigestLen){
> +    case SHA256_DIGEST_SIZE:
> +      return EVP_sha256();
> +      break;
> +    case SHA384_DIGEST_SIZE:
> +      return EVP_sha384();
> +      break;
> +    case SHA512_DIGEST_SIZE:
> +      return EVP_sha512();
> +      break;
> +    default:
> +      return NULL;
> +  }
> +}
> +
> +
> +/**
> +  Verifies the RSA signature with RSASSA-PSS signature scheme defined in RFC
> 8017.
> +  Implementation determines salt length automatically from the signature
> encoding.
> +  Mask generation function is the same as the message digest algorithm.
> +  Salt length should atleast be equal to digest length.
> +
> +  @param[in]  RsaContext      Pointer to RSA context for signature verification.
> +  @param[in]  Message         Pointer to octet message to be verified.
> +  @param[in]  MsgSize         Size of the message in bytes.
> +  @param[in]  Signature       Pointer to RSASSA-PSS signature to be verified.
> +  @param[in]  SigSize         Size of signature in bytes.
> +  @param[in]  DigestLen       Length of digest for RSA operation.
> +  @param[in]  SaltLen         Salt length for PSS encoding.
> +
> +  @retval  TRUE   Valid signature encoded in RSASSA-PSS.
> +  @retval  FALSE  Invalid signature or invalid RSA context.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssVerify (
> +  IN  VOID         *RsaContext,
> +  IN  CONST UINT8  *Message,
> +  IN  UINTN        MsgSize,
> +  IN  CONST UINT8  *Signature,
> +  IN  UINTN        SigSize,
> +  IN  UINT16       DigestLen,
> +  IN  UINT16       SaltLen
> +  )
> +{
> +  BOOLEAN Result;
> +  EVP_PKEY *pEvpRsaKey = NULL;
> +  EVP_MD_CTX *pEvpVerifyCtx = NULL;
> +  EVP_PKEY_CTX *pKeyCtx = NULL;
> +  CONST EVP_MD  *HashAlg = NULL;
> +
> +  if (RsaContext == NULL) {
> +    return FALSE;
> +  }
> +  if (Message == NULL || MsgSize == 0 || MsgSize > INT_MAX) {
> +    return FALSE;
> +  }
> +  if (Signature == NULL || SigSize == 0 || SigSize > INT_MAX) {
> +    return FALSE;
> +  }
> +  if (SaltLen < DigestLen) {
> +    return FALSE;
> +  }
> +
> +  HashAlg = GetEvpMD(DigestLen);
> +
> +  if (HashAlg == NULL) {
> +    return FALSE;
> +  }
> +
> +  pEvpRsaKey = EVP_PKEY_new();
> +  if (pEvpRsaKey == NULL) {
> +    goto _Exit;
> +  }
> +
> +  EVP_PKEY_set1_RSA(pEvpRsaKey, RsaContext);
> +
> +  pEvpVerifyCtx = EVP_MD_CTX_create();
> +  if (pEvpVerifyCtx == NULL) {
> +    goto _Exit;
> +  }
> +
> +  Result = EVP_DigestVerifyInit(pEvpVerifyCtx, &pKeyCtx, HashAlg, NULL,
> pEvpRsaKey) > 0;
> +  if (pKeyCtx == NULL) {
> +    goto _Exit;
> +  }
> +
> +  if (Result) {
> +    Result = EVP_PKEY_CTX_set_rsa_padding(pKeyCtx,
> RSA_PKCS1_PSS_PADDING) > 0;
> +  }
> +  if (Result) {
> +    Result = EVP_PKEY_CTX_set_rsa_pss_saltlen(pKeyCtx, SaltLen) > 0;
> +  }
> +  if (Result) {
> +    Result = EVP_PKEY_CTX_set_rsa_mgf1_md(pKeyCtx, HashAlg) > 0;
> +  }
> +  if (Result) {
> +    Result = EVP_DigestVerifyUpdate(pEvpVerifyCtx, Message,
> (UINT32)MsgSize) > 0;
> +  }
> +  if (Result) {
> +    Result = EVP_DigestVerifyFinal(pEvpVerifyCtx, Signature, (UINT32)SigSize) > 0;
> +  }
> +
> +_Exit :
> +  if (pEvpRsaKey) {
> +    EVP_PKEY_free(pEvpRsaKey);
> +  }
> +  if (pEvpVerifyCtx) {
> +    EVP_MD_CTX_destroy(pEvpVerifyCtx);
> +  }
> +
> +  return Result;
> +}
> diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssNull.c
> b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssNull.c
> new file mode 100644
> index 000000000000..69c6889fbc4b
> --- /dev/null
> +++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssNull.c
> @@ -0,0 +1,46 @@
> +/** @file
> +  RSA-PSS Asymmetric Cipher Wrapper Implementation over OpenSSL.
> +
> +  This file does not provide real capabilities for following APIs in RSA handling:
> +  1) RsaPssVerify
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "InternalCryptLib.h"
> +
> +/**
> +  Verifies the RSA signature with RSASSA-PSS signature scheme defined in RFC
> 8017.
> +  Implementation determines salt length automatically from the signature
> encoding.
> +  Mask generation function is the same as the message digest algorithm.
> +  Salt length should atleast be equal to digest length.
> +
> +  @param[in]  RsaContext      Pointer to RSA context for signature verification.
> +  @param[in]  Message         Pointer to octet message to be verified.
> +  @param[in]  MsgSize         Size of the message in bytes.
> +  @param[in]  Signature       Pointer to RSASSA-PSS signature to be verified.
> +  @param[in]  SigSize         Size of signature in bytes.
> +  @param[in]  DigestLen       Length of digest for RSA operation.
> +  @param[in]  SaltLen         Salt length for PSS encoding.
> +
> +  @retval  TRUE   Valid signature encoded in RSASSA-PSS.
> +  @retval  FALSE  Invalid signature or invalid RSA context.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssVerify (
> +  IN  VOID         *RsaContext,
> +  IN  CONST UINT8  *Message,
> +  IN  UINTN        MsgSize,
> +  IN  CONST UINT8  *Signature,
> +  IN  UINTN        SigSize,
> +  IN  UINT16       DigestLen,
> +  IN  UINT16       SaltLen
> +  )
> +{
> +  ASSERT (FALSE);
> +  return FALSE;
> +}
> diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSign.c
> b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSign.c
> new file mode 100644
> index 000000000000..1ed076e4192c
> --- /dev/null
> +++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSign.c
> @@ -0,0 +1,169 @@
> +/** @file
> +  RSA PSS Asymmetric Cipher Wrapper Implementation over OpenSSL.
> +
> +  This file implements following APIs which provide basic capabilities for RSA:
> +  1) RsaPssSign
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "InternalCryptLib.h"
> +
> +#include <openssl/bn.h>
> +#include <openssl/rsa.h>
> +#include <openssl/objects.h>
> +#include <openssl/evp.h>
> +
> +
> +/**
> +  Retrieve a pointer to EVP message digest object.
> +
> +  @param[in]  DigestLen   Length of the message digest.
> +
> +**/
> +STATIC
> +const
> +EVP_MD*
> +GetEvpMD (
> +  IN UINT16 DigestLen
> +  )
> +{
> +  switch (DigestLen){
> +    case SHA256_DIGEST_SIZE:
> +      return EVP_sha256();
> +      break;
> +    case SHA384_DIGEST_SIZE:
> +      return EVP_sha384();
> +      break;
> +    case SHA512_DIGEST_SIZE:
> +      return EVP_sha512();
> +      break;
> +    default:
> +      return NULL;
> +  }
> +}
> +
> +
> +/**
> +  Carries out the RSA-SSA signature generation with EMSA-PSS encoding
> scheme.
> +
> +  This function carries out the RSA-SSA signature generation with EMSA-PSS
> encoding scheme defined in
> +  RFC 8017.
> +  Mask generation function is the same as the message digest algorithm.
> +  If the Signature buffer is too small to hold the contents of signature, FALSE
> +  is returned and SigSize is set to the required buffer size to obtain the signature.
> +
> +  If RsaContext is NULL, then return FALSE.
> +  If Message is NULL, then return FALSE.
> +  If MsgSize is zero or > INT_MAX, then return FALSE.
> +  If DigestLen is NOT 32, 48 or 64, return FALSE.
> +  If SaltLen is < DigestLen, then return FALSE.
> +  If SigSize is large enough but Signature is NULL, then return FALSE.
> +  If this interface is not supported, then return FALSE.
> +
> +  @param[in]      RsaContext   Pointer to RSA context for signature generation.
> +  @param[in]      Message      Pointer to octet message to be signed.
> +  @param[in]      MsgSize      Size of the message in bytes.
> +  @param[in]      DigestLen    Length of the digest in bytes to be used for RSA
> signature operation.
> +  @param[in]      SaltLen      Length of the salt in bytes to be used for PSS
> encoding.
> +  @param[out]     Signature    Pointer to buffer to receive RSA PSS signature.
> +  @param[in, out] SigSize      On input, the size of Signature buffer in bytes.
> +                               On output, the size of data returned in Signature buffer in
> bytes.
> +
> +  @retval  TRUE   Signature successfully generated in RSASSA-PSS.
> +  @retval  FALSE  Signature generation failed.
> +  @retval  FALSE  SigSize is too small.
> +  @retval  FALSE  This interface is not supported.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssSign (
> +  IN      VOID         *RsaContext,
> +  IN      CONST UINT8  *Message,
> +  IN      UINTN        MsgSize,
> +  IN      UINT16       DigestLen,
> +  IN      UINT16       SaltLen,
> +  OUT     UINT8        *Signature,
> +  IN OUT  UINTN        *SigSize
> +  )
> +{
> +  BOOLEAN               Result;
> +  UINTN                 RsaSigSize;
> +  EVP_PKEY              *pEvpRsaKey = NULL;
> +  EVP_MD_CTX            *pEvpVerifyCtx = NULL;
> +  EVP_PKEY_CTX          *pKeyCtx = NULL;
> +  CONST EVP_MD          *HashAlg = NULL;
> +
> +  if (RsaContext == NULL) {
> +    return FALSE;
> +  }
> +  if (Message == NULL || MsgSize == 0 || MsgSize > INT_MAX) {
> +    return FALSE;
> +  }
> +
> +  RsaSigSize = RSA_size (RsaContext);
> +  if (*SigSize < RsaSigSize) {
> +    *SigSize = RsaSigSize;
> +    return FALSE;
> +  }
> +
> +  if (Signature == NULL) {
> +    return FALSE;
> +  }
> +
> +  if (SaltLen < DigestLen) {
> +    return FALSE;
> +  }
> +
> +  HashAlg = GetEvpMD(DigestLen);
> +
> +  if (HashAlg == NULL) {
> +    return FALSE;
> +  }
> +
> +  pEvpRsaKey = EVP_PKEY_new();
> +  if (pEvpRsaKey == NULL) {
> +    goto _Exit;
> +  }
> +
> +  EVP_PKEY_set1_RSA(pEvpRsaKey, RsaContext);
> +
> +  pEvpVerifyCtx = EVP_MD_CTX_create();
> +  if (pEvpVerifyCtx == NULL) {
> +    goto _Exit;
> +  }
> +
> +  Result = EVP_DigestSignInit(pEvpVerifyCtx, &pKeyCtx, HashAlg, NULL,
> pEvpRsaKey) > 0;
> +  if (pKeyCtx == NULL) {
> +    goto _Exit;
> +  }
> +
> +  if (Result) {
> +    Result = EVP_PKEY_CTX_set_rsa_padding(pKeyCtx,
> RSA_PKCS1_PSS_PADDING) > 0;
> +  }
> +  if (Result) {
> +    Result = EVP_PKEY_CTX_set_rsa_pss_saltlen(pKeyCtx, SaltLen) > 0;
> +  }
> +  if (Result) {
> +    Result = EVP_PKEY_CTX_set_rsa_mgf1_md(pKeyCtx, HashAlg) > 0;
> +  }
> +  if (Result) {
> +    Result = EVP_DigestSignUpdate(pEvpVerifyCtx, Message, (UINT32)MsgSize) >
> 0;
> +  }
> +  if (Result) {
> +    Result = EVP_DigestSignFinal(pEvpVerifyCtx, Signature, SigSize) > 0;
> +  }
> +
> +_Exit :
> +  if (pEvpRsaKey) {
> +    EVP_PKEY_free(pEvpRsaKey);
> +  }
> +  if (pEvpVerifyCtx) {
> +    EVP_MD_CTX_destroy(pEvpVerifyCtx);
> +  }
> +
> +  return Result;
> +}
> diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSignNull.c
> b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSignNull.c
> new file mode 100644
> index 000000000000..4ed2dfce992a
> --- /dev/null
> +++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptRsaPssSignNull.c
> @@ -0,0 +1,60 @@
> +/** @file
> +  RSA-PSS Asymmetric Cipher Wrapper Implementation over OpenSSL.
> +
> +  This file does not provide real capabilities for following APIs in RSA handling:
> +  1) RsaPssSign
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "InternalCryptLib.h"
> +
> +/**
> +  Carries out the RSA-SSA signature generation with EMSA-PSS encoding
> scheme.
> +
> +  This function carries out the RSA-SSA signature generation with EMSA-PSS
> encoding scheme defined in
> +  RFC 8017.
> +  Mask generation function is the same as the message digest algorithm.
> +  If the Signature buffer is too small to hold the contents of signature, FALSE
> +  is returned and SigSize is set to the required buffer size to obtain the signature.
> +
> +  If RsaContext is NULL, then return FALSE.
> +  If Message is NULL, then return FALSE.
> +  If MsgSize is zero or > INT_MAX, then return FALSE.
> +  If DigestLen is NOT 32, 48 or 64, return FALSE.
> +  If SaltLen is < DigestLen, then return FALSE.
> +  If SigSize is large enough but Signature is NULL, then return FALSE.
> +  If this interface is not supported, then return FALSE.
> +
> +  @param[in]      RsaContext   Pointer to RSA context for signature generation.
> +  @param[in]      Message      Pointer to octet message to be signed.
> +  @param[in]      MsgSize      Size of the message in bytes.
> +  @param[in]      DigestLen    Length of the digest in bytes to be used for RSA
> signature operation.
> +  @param[in]      SaltLen      Length of the salt in bytes to be used for PSS
> encoding.
> +  @param[out]     Signature    Pointer to buffer to receive RSA PSS signature.
> +  @param[in, out] SigSize      On input, the size of Signature buffer in bytes.
> +                               On output, the size of data returned in Signature buffer in
> bytes.
> +
> +  @retval  TRUE   Signature successfully generated in RSASSA-PSS.
> +  @retval  FALSE  Signature generation failed.
> +  @retval  FALSE  SigSize is too small.
> +  @retval  FALSE  This interface is not supported.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssSign (
> +  IN      VOID         *RsaContext,
> +  IN      CONST UINT8  *Message,
> +  IN      UINTN        MsgSize,
> +  IN      UINT16       DigestLen,
> +  IN      UINT16       SaltLen,
> +  OUT     UINT8        *Signature,
> +  IN OUT  UINTN        *SigSize
> +  )
> +{
> +  ASSERT (FALSE);
> +  return FALSE;
> +}
> diff --git a/CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssNull.c
> b/CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssNull.c
> new file mode 100644
> index 000000000000..69c6889fbc4b
> --- /dev/null
> +++ b/CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssNull.c
> @@ -0,0 +1,46 @@
> +/** @file
> +  RSA-PSS Asymmetric Cipher Wrapper Implementation over OpenSSL.
> +
> +  This file does not provide real capabilities for following APIs in RSA handling:
> +  1) RsaPssVerify
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "InternalCryptLib.h"
> +
> +/**
> +  Verifies the RSA signature with RSASSA-PSS signature scheme defined in RFC
> 8017.
> +  Implementation determines salt length automatically from the signature
> encoding.
> +  Mask generation function is the same as the message digest algorithm.
> +  Salt length should atleast be equal to digest length.
> +
> +  @param[in]  RsaContext      Pointer to RSA context for signature verification.
> +  @param[in]  Message         Pointer to octet message to be verified.
> +  @param[in]  MsgSize         Size of the message in bytes.
> +  @param[in]  Signature       Pointer to RSASSA-PSS signature to be verified.
> +  @param[in]  SigSize         Size of signature in bytes.
> +  @param[in]  DigestLen       Length of digest for RSA operation.
> +  @param[in]  SaltLen         Salt length for PSS encoding.
> +
> +  @retval  TRUE   Valid signature encoded in RSASSA-PSS.
> +  @retval  FALSE  Invalid signature or invalid RSA context.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssVerify (
> +  IN  VOID         *RsaContext,
> +  IN  CONST UINT8  *Message,
> +  IN  UINTN        MsgSize,
> +  IN  CONST UINT8  *Signature,
> +  IN  UINTN        SigSize,
> +  IN  UINT16       DigestLen,
> +  IN  UINT16       SaltLen
> +  )
> +{
> +  ASSERT (FALSE);
> +  return FALSE;
> +}
> diff --git a/CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssSignNull.c
> b/CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssSignNull.c
> new file mode 100644
> index 000000000000..4ed2dfce992a
> --- /dev/null
> +++ b/CryptoPkg/Library/BaseCryptLibNull/Pk/CryptRsaPssSignNull.c
> @@ -0,0 +1,60 @@
> +/** @file
> +  RSA-PSS Asymmetric Cipher Wrapper Implementation over OpenSSL.
> +
> +  This file does not provide real capabilities for following APIs in RSA handling:
> +  1) RsaPssSign
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "InternalCryptLib.h"
> +
> +/**
> +  Carries out the RSA-SSA signature generation with EMSA-PSS encoding
> scheme.
> +
> +  This function carries out the RSA-SSA signature generation with EMSA-PSS
> encoding scheme defined in
> +  RFC 8017.
> +  Mask generation function is the same as the message digest algorithm.
> +  If the Signature buffer is too small to hold the contents of signature, FALSE
> +  is returned and SigSize is set to the required buffer size to obtain the signature.
> +
> +  If RsaContext is NULL, then return FALSE.
> +  If Message is NULL, then return FALSE.
> +  If MsgSize is zero or > INT_MAX, then return FALSE.
> +  If DigestLen is NOT 32, 48 or 64, return FALSE.
> +  If SaltLen is < DigestLen, then return FALSE.
> +  If SigSize is large enough but Signature is NULL, then return FALSE.
> +  If this interface is not supported, then return FALSE.
> +
> +  @param[in]      RsaContext   Pointer to RSA context for signature generation.
> +  @param[in]      Message      Pointer to octet message to be signed.
> +  @param[in]      MsgSize      Size of the message in bytes.
> +  @param[in]      DigestLen    Length of the digest in bytes to be used for RSA
> signature operation.
> +  @param[in]      SaltLen      Length of the salt in bytes to be used for PSS
> encoding.
> +  @param[out]     Signature    Pointer to buffer to receive RSA PSS signature.
> +  @param[in, out] SigSize      On input, the size of Signature buffer in bytes.
> +                               On output, the size of data returned in Signature buffer in
> bytes.
> +
> +  @retval  TRUE   Signature successfully generated in RSASSA-PSS.
> +  @retval  FALSE  Signature generation failed.
> +  @retval  FALSE  SigSize is too small.
> +  @retval  FALSE  This interface is not supported.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssSign (
> +  IN      VOID         *RsaContext,
> +  IN      CONST UINT8  *Message,
> +  IN      UINTN        MsgSize,
> +  IN      UINT16       DigestLen,
> +  IN      UINT16       SaltLen,
> +  OUT     UINT8        *Signature,
> +  IN OUT  UINTN        *SigSize
> +  )
> +{
> +  ASSERT (FALSE);
> +  return FALSE;
> +}
> diff --git a/CryptoPkg/Library/BaseCryptLibOnProtocolPpi/CryptLib.c
> b/CryptoPkg/Library/BaseCryptLibOnProtocolPpi/CryptLib.c
> index 8b43d1363cb9..412fbdbff52c 100644
> --- a/CryptoPkg/Library/BaseCryptLibOnProtocolPpi/CryptLib.c
> +++ b/CryptoPkg/Library/BaseCryptLibOnProtocolPpi/CryptLib.c
> @@ -1552,6 +1552,72 @@ RsaPkcs1Verify (
>    CALL_CRYPTO_SERVICE (RsaPkcs1Verify, (RsaContext, MessageHash, HashSize,
> Signature, SigSize), FALSE);
>  }
> 
> +/**
> +  Verifies the RSA signature with RSASSA-PSS signature scheme defined in RFC
> 8017.
> +  Implementation determines salt length automatically from the signature
> encoding.
> +  Mask generation function is the same as the message digest algorithm.
> +  Salt length should atleast be equal to digest length.
> +
> +  @param[in]  RsaContext      Pointer to RSA context for signature verification.
> +  @param[in]  Message         Pointer to octet message to be verified.
> +  @param[in]  MsgSize         Size of the message in bytes.
> +  @param[in]  Signature       Pointer to RSASSA-PSS signature to be verified.
> +  @param[in]  SigSize         Size of signature in bytes.
> +  @param[in]  DigestLen       Length of digest for RSA operation.
> +  @param[in]  SaltLen         Salt length for PSS encoding.
> +
> +  @retval  TRUE   Valid signature encoded in RSASSA-PSS.
> +  @retval  FALSE  Invalid signature or invalid RSA context.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssVerify (
> +  IN  VOID         *RsaContext,
> +  IN  CONST UINT8  *Message,
> +  IN  UINTN        MsgSize,
> +  IN  CONST UINT8  *Signature,
> +  IN  UINTN        SigSize,
> +  IN  UINT16       DigestLen,
> +  IN  UINT16       SaltLen
> +  )
> +{
> +  CALL_CRYPTO_SERVICE (RsaPssVerify, (RsaContext, Message, MsgSize,
> Signature, SigSize, DigestLen, SaltLen), FALSE);
> +}
> +
> +/**
> +  Verifies the RSA signature with RSASSA-PSS signature scheme defined in RFC
> 8017.
> +  Implementation determines salt length automatically from the signature
> encoding.
> +  Mask generation function is the same as the message digest algorithm.
> +  Salt length should atleast be equal to digest length.
> +
> +  @param[in]  RsaContext      Pointer to RSA context for signature verification.
> +  @param[in]  Message         Pointer to octet message to be verified.
> +  @param[in]  MsgSize         Size of the message in bytes.
> +  @param[in]  Signature       Pointer to RSASSA-PSS signature to be verified.
> +  @param[in]  SigSize         Size of signature in bytes.
> +  @param[in]  DigestLen       Length of digest for RSA operation.
> +  @param[in]  SaltLen         Salt length for PSS encoding.
> +
> +  @retval  TRUE   Valid signature encoded in RSASSA-PSS.
> +  @retval  FALSE  Invalid signature or invalid RSA context.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssSign (
> +  IN      VOID         *RsaContext,
> +  IN      CONST UINT8  *Message,
> +  IN      UINTN        MsgSize,
> +  IN      UINT16       DigestLen,
> +  IN      UINT16       SaltLen,
> +  OUT     UINT8        *Signature,
> +  IN OUT  UINTN        *SigSize
> +  )
> +{
> +  CALL_CRYPTO_SERVICE (RsaPssSign, (RsaContext, Message, MsgSize,
> DigestLen, SaltLen, Signature, SigSize), FALSE);
> +}
> +
>  /**
>    Retrieve the RSA Private Key from the password-protected PEM key data.
> 
> diff --git
> a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/BaseCryptLibUnitTests.c
> b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/BaseCryptLibUnitTests.c
> index b7fcea3ff7e4..3873de973064 100644
> --- a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/BaseCryptLibUnitTests.c
> +++ b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/BaseCryptLibUnitTests.c
> @@ -16,6 +16,7 @@ SUITE_DESC  mSuiteDesc[] = {
>      {"HMAC verify tests",           "CryptoPkg.BaseCryptLib", NULL, NULL,
> &mHmacTestNum,           mHmacTest},
>      {"BlockCipher verify tests",    "CryptoPkg.BaseCryptLib", NULL, NULL,
> &mBlockCipherTestNum,    mBlockCipherTest},
>      {"RSA verify tests",            "CryptoPkg.BaseCryptLib", NULL, NULL,
> &mRsaTestNum,            mRsaTest},
> +    {"RSA PSS verify tests",        "CryptoPkg.BaseCryptLib", NULL, NULL,
> &mRsaPssTestNum,         mRsaPssTest},
>      {"RSACert verify tests",        "CryptoPkg.BaseCryptLib", NULL, NULL,
> &mRsaCertTestNum,        mRsaCertTest},
>      {"PKCS7 verify tests",          "CryptoPkg.BaseCryptLib", NULL, NULL,
> &mPkcs7TestNum,          mPkcs7Test},
>      {"PKCS5 verify tests",          "CryptoPkg.BaseCryptLib", NULL, NULL,
> &mPkcs5TestNum,          mPkcs5Test},
> diff --git a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaPssTests.c
> b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaPssTests.c
> new file mode 100644
> index 000000000000..5ac2f325fbdd
> --- /dev/null
> +++ b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaPssTests.c
> @@ -0,0 +1,191 @@
> +/** @file
> +  Application for RSA PSS Primitives Validation.
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "TestBaseCryptLib.h"
> +
> +//
> +// RSA PSS test vectors from NIST FIPS 186-3 RSA files
> +//
> +
> +//
> +// Public Modulus of RSA Key
> +//
> +UINT8 RsaPssN[]={
> +    0xa4, 0x7d, 0x04, 0xe7, 0xca, 0xcd, 0xba, 0x4e, 0xa2, 0x6e, 0xca, 0x8a, 0x4c,
> 0x6e, 0x14, 0x56,
> +    0x3c, 0x2c, 0xe0, 0x3b, 0x62, 0x3b, 0x76, 0x8c, 0x0d, 0x49, 0x86, 0x8a, 0x57,
> 0x12, 0x13, 0x01,
> +    0xdb, 0xf7, 0x83, 0xd8, 0x2f, 0x4c, 0x05, 0x5e, 0x73, 0x96, 0x0e, 0x70, 0x55,
> 0x01, 0x87, 0xd0,
> +    0xaf, 0x62, 0xac, 0x34, 0x96, 0xf0, 0xa3, 0xd9, 0x10, 0x3c, 0x2e, 0xb7, 0x91,
> 0x9a, 0x72, 0x75,
> +    0x2f, 0xa7, 0xce, 0x8c, 0x68, 0x8d, 0x81, 0xe3, 0xae, 0xe9, 0x94, 0x68, 0x88,
> 0x7a, 0x15, 0x28,
> +    0x8a, 0xfb, 0xb7, 0xac, 0xb8, 0x45, 0xb7, 0xc5, 0x22, 0xb5, 0xc6, 0x4e, 0x67,
> 0x8f, 0xcd, 0x3d,
> +    0x22, 0xfe, 0xb8, 0x4b, 0x44, 0x27, 0x27, 0x00, 0xbe, 0x52, 0x7d, 0x2b, 0x20,
> 0x25, 0xa3, 0xf8,
> +    0x3c, 0x23, 0x83, 0xbf, 0x6a, 0x39, 0xcf, 0x5b, 0x4e, 0x48, 0xb3, 0xcf, 0x2f,
> 0x56, 0xee, 0xf0,
> +    0xdf, 0xff, 0x18, 0x55, 0x5e, 0x31, 0x03, 0x7b, 0x91, 0x52, 0x48, 0x69, 0x48,
> 0x76, 0xf3, 0x04,
> +    0x78, 0x14, 0x41, 0x51, 0x64, 0xf2, 0xc6, 0x60, 0x88, 0x1e, 0x69, 0x4b, 0x58,
> 0xc2, 0x80, 0x38,
> +    0xa0, 0x32, 0xad, 0x25, 0x63, 0x4a, 0xad, 0x7b, 0x39, 0x17, 0x1d, 0xee, 0x36,
> 0x8e, 0x3d, 0x59,
> +    0xbf, 0xb7, 0x29, 0x9e, 0x46, 0x01, 0xd4, 0x58, 0x7e, 0x68, 0xca, 0xaf, 0x8d,
> 0xb4, 0x57, 0xb7,
> +    0x5a, 0xf4, 0x2f, 0xc0, 0xcf, 0x1a, 0xe7, 0xca, 0xce, 0xd2, 0x86, 0xd7, 0x7f,
> 0xac, 0x6c, 0xed,
> +    0xb0, 0x3a, 0xd9, 0x4f, 0x14, 0x33, 0xd2, 0xc9, 0x4d, 0x08, 0xe6, 0x0b, 0xc1,
> 0xfd, 0xef, 0x05,
> +    0x43, 0xcd, 0x29, 0x51, 0xe7, 0x65, 0xb3, 0x82, 0x30, 0xfd, 0xd1, 0x8d, 0xe5,
> 0xd2, 0xca, 0x62,
> +    0x7d, 0xdc, 0x03, 0x2f, 0xe0, 0x5b, 0xbd, 0x2f, 0xf2, 0x1e, 0x2d, 0xb1, 0xc2,
> 0xf9, 0x4d, 0x8b,
> +    };
> +
> +//
> +// Public Exponent of RSA Key
> +//
> +UINT8 RsaPssE[]={ 0x10, 0xe4, 0x3f };
> +
> +//
> +// Private Exponent of RSA Key
> +//
> +UINT8 RsaPssD[]={
> +    0x11, 0xa0, 0xdd, 0x28, 0x5f, 0x66, 0x47, 0x1a, 0x8d, 0xa3, 0x0b, 0xcb, 0x8c,
> 0x24, 0xa1, 0xd5,
> +    0xc8, 0xdb, 0x94, 0x2f, 0xc9, 0x92, 0x07, 0x97, 0xca, 0x44, 0x24, 0x60, 0xa8,
> 0x00, 0xb7, 0x5b,
> +    0xbc, 0x73, 0x8b, 0xeb, 0x8e, 0xe0, 0xe8, 0x74, 0xb0, 0x53, 0xe6, 0x47, 0x07,
> 0xdf, 0x4c, 0xfc,
> +    0x78, 0x37, 0xc4, 0x0e, 0x5b, 0xe6, 0x8b, 0x8a, 0x8e, 0x1d, 0x01, 0x45, 0x16,
> 0x9c, 0xa6, 0x27,
> +    0x1d, 0x81, 0x88, 0x7e, 0x19, 0xa1, 0xcd, 0x95, 0xb2, 0xfd, 0x0d, 0xe0, 0xdb,
> 0xa3, 0x47, 0xfe,
> +    0x63, 0x7b, 0xcc, 0x6c, 0xdc, 0x24, 0xee, 0xbe, 0x03, 0xc2, 0x4d, 0x4c, 0xf3,
> 0xa5, 0xc6, 0x15,
> +    0x4d, 0x78, 0xf1, 0x41, 0xfe, 0x34, 0x16, 0x99, 0x24, 0xd0, 0xf8, 0x95, 0x33,
> 0x65, 0x8e, 0xac,
> +    0xfd, 0xea, 0xe9, 0x9c, 0xe1, 0xa8, 0x80, 0x27, 0xc1, 0x8f, 0xf9, 0x26, 0x53,
> 0xa8, 0x35, 0xaa,
> +    0x38, 0x91, 0xbf, 0xff, 0xcd, 0x38, 0x8f, 0xfc, 0x23, 0x88, 0xce, 0x2b, 0x10,
> 0x56, 0x85, 0x43,
> +    0x75, 0x05, 0x02, 0xcc, 0xbc, 0x69, 0xc0, 0x08, 0x8f, 0x1d, 0x69, 0x0e, 0x97,
> 0xa5, 0xf5, 0xbd,
> +    0xd1, 0x88, 0x8c, 0xd2, 0xfa, 0xa4, 0x3c, 0x04, 0xae, 0x24, 0x53, 0x95, 0x22,
> 0xdd, 0xe2, 0xd9,
> +    0xc2, 0x02, 0xf6, 0x55, 0xfc, 0x55, 0x75, 0x44, 0x40, 0xb5, 0x3a, 0x15, 0x32,
> 0xaa, 0xb4, 0x78,
> +    0x51, 0xf6, 0x0b, 0x7a, 0x06, 0x7e, 0x24, 0x0b, 0x73, 0x8e, 0x1b, 0x1d, 0xaa,
> 0xe6, 0xca, 0x0d,
> +    0x59, 0xee, 0xae, 0x27, 0x68, 0x6c, 0xd8, 0x88, 0x57, 0xe9, 0xad, 0xad, 0xc2,
> 0xd4, 0xb8, 0x2b,
> +    0x07, 0xa6, 0x1a, 0x35, 0x84, 0x56, 0xaa, 0xf8, 0x07, 0x66, 0x96, 0x93, 0xff,
> 0xb1, 0x3c, 0x99,
> +    0x64, 0xa6, 0x36, 0x54, 0xca, 0xdc, 0x81, 0xee, 0x59, 0xdf, 0x51, 0x1c, 0xa3,
> 0xa4, 0xbd, 0x67,
> +    };
> +
> +//
> +// Binary message to be signed and verified
> +//
> +UINT8 PssMessage[]={
> +    0xe0, 0x02, 0x37, 0x7a, 0xff, 0xb0, 0x4f, 0x0f, 0xe4, 0x59, 0x8d, 0xe9, 0xd9,
> 0x2d, 0x31, 0xd6,
> +    0xc7, 0x86, 0x04, 0x0d, 0x57, 0x76, 0x97, 0x65, 0x56, 0xa2, 0xcf, 0xc5, 0x5e,
> 0x54, 0xa1, 0xdc,
> +    0xb3, 0xcb, 0x1b, 0x12, 0x6b, 0xd6, 0xa4, 0xbe, 0xd2, 0xa1, 0x84, 0x99, 0x0c,
> 0xce, 0xa7, 0x73,
> +    0xfc, 0xc7, 0x9d, 0x24, 0x65, 0x53, 0xe6, 0xc6, 0x4f, 0x68, 0x6d, 0x21, 0xad,
> 0x41, 0x52, 0x67,
> +    0x3c, 0xaf, 0xec, 0x22, 0xae, 0xb4, 0x0f, 0x6a, 0x08, 0x4e, 0x8a, 0x5b, 0x49,
> 0x91, 0xf4, 0xc6,
> +    0x4c, 0xf8, 0xa9, 0x27, 0xef, 0xfd, 0x0f, 0xd7, 0x75, 0xe7, 0x1e, 0x83, 0x29,
> 0xe4, 0x1f, 0xdd,
> +    0x44, 0x57, 0xb3, 0x91, 0x11, 0x73, 0x18, 0x7b, 0x4f, 0x09, 0xa8, 0x17, 0xd7,
> 0x9e, 0xa2, 0x39,
> +    0x7f, 0xc1, 0x2d, 0xfe, 0x3d, 0x9c, 0x9a, 0x02, 0x90, 0xc8, 0xea, 0xd3, 0x1b,
> 0x66, 0x90, 0xa6,
> +    };
> +
> +//
> +// Binary message to be signed and verified
> +//
> +UINT8 PssSalt[]={
> +    0xd6, 0x6f, 0x72, 0xf1, 0x0b, 0x69, 0x00, 0x1a, 0x5b, 0x59, 0xcf, 0x10, 0x92,
> 0xad, 0x27, 0x4d,
> +    0x50, 0x56, 0xc4, 0xe9, 0x5c, 0xcc, 0xcf, 0xbe, 0x3b, 0x53, 0x0d, 0xcb, 0x02,
> 0x7e, 0x57, 0xd6
> +    };
> +
> +//
> +// RSASSA-PSS Signature over above message using above keys, salt and
> SHA256 digest(and MGF1) algo.
> +//
> +UINT8 TestVectorSignature[]={
> +    0x4f, 0x9b, 0x42, 0x5c, 0x20, 0x58, 0x46, 0x0e, 0x4a, 0xb2, 0xf5, 0xc9, 0x63,
> 0x84, 0xda, 0x23,
> +    0x27, 0xfd, 0x29, 0x15, 0x0f, 0x01, 0x95, 0x5a, 0x76, 0xb4, 0xef, 0xe9, 0x56,
> 0xaf, 0x06, 0xdc,
> +    0x08, 0x77, 0x9a, 0x37, 0x4e, 0xe4, 0x60, 0x7e, 0xab, 0x61, 0xa9, 0x3a, 0xdc,
> 0x56, 0x08, 0xf4,
> +    0xec, 0x36, 0xe4, 0x7f, 0x2a, 0x0f, 0x75, 0x4e, 0x8f, 0xf8, 0x39, 0xa8, 0xa1,
> 0x9b, 0x1d, 0xb1,
> +    0xe8, 0x84, 0xea, 0x4c, 0xf3, 0x48, 0xcd, 0x45, 0x50, 0x69, 0xeb, 0x87, 0xaf,
> 0xd5, 0x36, 0x45,
> +    0xb4, 0x4e, 0x28, 0xa0, 0xa5, 0x68, 0x08, 0xf5, 0x03, 0x1d, 0xa5, 0xba, 0x91,
> 0x12, 0x76, 0x8d,
> +    0xfb, 0xfc, 0xa4, 0x4e, 0xbe, 0x63, 0xa0, 0xc0, 0x57, 0x2b, 0x73, 0x1d, 0x66,
> 0x12, 0x2f, 0xb7,
> +    0x16, 0x09, 0xbe, 0x14, 0x80, 0xfa, 0xa4, 0xe4, 0xf7, 0x5e, 0x43, 0x95, 0x51,
> 0x59, 0xd7, 0x0f,
> +    0x08, 0x1e, 0x2a, 0x32, 0xfb, 0xb1, 0x9a, 0x48, 0xb9, 0xf1, 0x62, 0xcf, 0x6b,
> 0x2f, 0xb4, 0x45,
> +    0xd2, 0xd6, 0x99, 0x4b, 0xc5, 0x89, 0x10, 0xa2, 0x6b, 0x59, 0x43, 0x47, 0x78,
> 0x03, 0xcd, 0xaa,
> +    0xa1, 0xbd, 0x74, 0xb0, 0xda, 0x0a, 0x5d, 0x05, 0x3d, 0x8b, 0x1d, 0xc5, 0x93,
> 0x09, 0x1d, 0xb5,
> +    0x38, 0x83, 0x83, 0xc2, 0x60, 0x79, 0xf3, 0x44, 0xe2, 0xae, 0xa6, 0x00, 0xd0,
> 0xe3, 0x24, 0x16,
> +    0x4b, 0x45, 0x0f, 0x7b, 0x9b, 0x46, 0x51, 0x11, 0xb7, 0x26, 0x5f, 0x3b, 0x1b,
> 0x06, 0x30, 0x89,
> +    0xae, 0x7e, 0x26, 0x23, 0xfc, 0x0f, 0xda, 0x80, 0x52, 0xcf, 0x4b, 0xf3, 0x37,
> 0x91, 0x02, 0xfb,
> +    0xf7, 0x1d, 0x7c, 0x98, 0xe8, 0x25, 0x86, 0x64, 0xce, 0xed, 0x63, 0x7d, 0x20,
> 0xf9, 0x5f, 0xf0,
> +    0x11, 0x18, 0x81, 0xe6, 0x50, 0xce, 0x61, 0xf2, 0x51, 0xd9, 0xc3, 0xa6, 0x29,
> 0xef, 0x22, 0x2d,
> +    };
> +
> +
> +VOID     *mRsa;
> +
> +UNIT_TEST_STATUS
> +EFIAPI
> +TestVerifyRsaPssPreReq (
> +  UNIT_TEST_CONTEXT           Context
> +  )
> +{
> +  mRsa = RsaNew ();
> +
> +  if (mRsa == NULL) {
> +    return UNIT_TEST_ERROR_TEST_FAILED;
> +  }
> +
> +  return UNIT_TEST_PASSED;
> +}
> +
> +VOID
> +EFIAPI
> +TestVerifyRsaPssCleanUp (
> +  UNIT_TEST_CONTEXT           Context
> +  )
> +{
> +  if (mRsa != NULL) {
> +    RsaFree (mRsa);
> +    mRsa = NULL;
> +  }
> +}
> +
> +
> +UNIT_TEST_STATUS
> +EFIAPI
> +TestVerifyRsaPssSignVerify (
> +  IN UNIT_TEST_CONTEXT           Context
> +  )
> +{
> +  UINT8    *Signature;
> +  UINTN    SigSize;
> +  BOOLEAN  Status;
> +
> +  Status = RsaSetKey (mRsa, RsaKeyN, RsaPssN, sizeof (RsaPssN));
> +  UT_ASSERT_TRUE (Status);
> +
> +  Status = RsaSetKey (mRsa, RsaKeyE, RsaPssE, sizeof (RsaPssE));
> +  UT_ASSERT_TRUE (Status);
> +
> +  Status = RsaSetKey (mRsa, RsaKeyD, RsaPssD, sizeof (RsaPssD));
> +  UT_ASSERT_TRUE (Status);
> +
> +  SigSize = 0;
> +  Status = RsaPssSign (mRsa, PssMessage, sizeof(PssMessage),
> SHA256_DIGEST_SIZE, SHA256_DIGEST_SIZE, NULL, &SigSize);
> +  UT_ASSERT_FALSE (Status);
> +  UT_ASSERT_NOT_EQUAL (SigSize, 0);
> +
> +  Signature = AllocatePool (SigSize);
> +  Status = RsaPssSign (mRsa, PssMessage, sizeof(PssMessage),
> SHA256_DIGEST_SIZE, SHA256_DIGEST_SIZE, Signature, &SigSize);
> +  UT_ASSERT_TRUE (Status);
> +
> +  //
> +  // Verify RSA PSS encoded Signature generated in above step
> +  //
> +  Status = RsaPssVerify (mRsa, PssMessage, sizeof(PssMessage), Signature,
> SigSize, SHA256_DIGEST_SIZE, SHA256_DIGEST_SIZE);
> +  UT_ASSERT_TRUE (Status);
> +
> +  //
> +  // Verify NIST FIPS 186-3 RSA test vector signature
> +  //
> +  Status = RsaPssVerify (mRsa, PssMessage, sizeof(PssMessage),
> TestVectorSignature, sizeof(TestVectorSignature), SHA256_DIGEST_SIZE,
> SHA256_DIGEST_SIZE);
> +  UT_ASSERT_TRUE (Status);
> +
> +  FreePool(Signature);
> +  return UNIT_TEST_PASSED;
> +}
> +
> +
> +TEST_DESC mRsaPssTest[] = {
> +    //
> +    // -----Description--------------------------------------Class----------------------
> Function---------------------------------Pre---------------------Post---------Context
> +    //
> +    {"TestVerifyRsaPssSignVerify()",           "CryptoPkg.BaseCryptLib.Rsa",
> TestVerifyRsaPssSignVerify,           TestVerifyRsaPssPreReq,
> TestVerifyRsaPssCleanUp, NULL},
> +};
> +
> +UINTN mRsaPssTestNum = ARRAY_SIZE(mRsaPssTest);
> diff --git a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaTests.c
> b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaTests.c
> index 7ce20d2e778f..0969b6aea660 100644
> --- a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaTests.c
> +++ b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/RsaTests.c
> @@ -295,6 +295,8 @@ TestVerifyRsaPkcs1SignVerify (
>    Status = RsaPkcs1Verify (mRsa, HashValue, HashSize, Signature, SigSize);
>    UT_ASSERT_TRUE (Status);
> 
> +  FreePool(Signature);
> +
>    return UNIT_TEST_PASSED;
>  }
> 
> diff --git a/CryptoPkg/Include/Library/BaseCryptLib.h
> b/CryptoPkg/Include/Library/BaseCryptLib.h
> index 496121e6a4ed..8c7d5922ef96 100644
> --- a/CryptoPkg/Include/Library/BaseCryptLib.h
> +++ b/CryptoPkg/Include/Library/BaseCryptLib.h
> @@ -1363,6 +1363,80 @@ RsaPkcs1Verify (
>    IN  UINTN        SigSize
>    );
> 
> +/**
> +  Carries out the RSA-SSA signature generation with EMSA-PSS encoding
> scheme.
> +
> +  This function carries out the RSA-SSA signature generation with EMSA-PSS
> encoding scheme defined in
> +  RFC 8017.
> +  Mask generation function is the same as the message digest algorithm.
> +  If the Signature buffer is too small to hold the contents of signature, FALSE
> +  is returned and SigSize is set to the required buffer size to obtain the signature.
> +
> +  If RsaContext is NULL, then return FALSE.
> +  If Message is NULL, then return FALSE.
> +  If MsgSize is zero or > INT_MAX, then return FALSE.
> +  If DigestLen is NOT 32, 48 or 64, return FALSE.
> +  If SaltLen is < DigestLen, then return FALSE.
> +  If SigSize is large enough but Signature is NULL, then return FALSE.
> +  If this interface is not supported, then return FALSE.
> +
> +  @param[in]      RsaContext   Pointer to RSA context for signature generation.
> +  @param[in]      Message      Pointer to octet message to be signed.
> +  @param[in]      MsgSize      Size of the message in bytes.
> +  @param[in]      DigestLen    Length of the digest in bytes to be used for RSA
> signature operation.
> +  @param[in]      SaltLen      Length of the salt in bytes to be used for PSS
> encoding.
> +  @param[out]     Signature    Pointer to buffer to receive RSA PSS signature.
> +  @param[in, out] SigSize      On input, the size of Signature buffer in bytes.
> +                               On output, the size of data returned in Signature buffer in
> bytes.
> +
> +  @retval  TRUE   Signature successfully generated in RSASSA-PSS.
> +  @retval  FALSE  Signature generation failed.
> +  @retval  FALSE  SigSize is too small.
> +  @retval  FALSE  This interface is not supported.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssSign (
> +  IN      VOID         *RsaContext,
> +  IN      CONST UINT8  *Message,
> +  IN      UINTN        MsgSize,
> +  IN      UINT16       DigestLen,
> +  IN      UINT16       SaltLen,
> +  OUT     UINT8        *Signature,
> +  IN OUT  UINTN        *SigSize
> +  );
> +
> +/**
> +  Verifies the RSA signature with RSASSA-PSS signature scheme defined in RFC
> 8017.
> +  Implementation determines salt length automatically from the signature
> encoding.
> +  Mask generation function is the same as the message digest algorithm.
> +  Salt length should atleast be equal to digest length.
> +
> +  @param[in]  RsaContext      Pointer to RSA context for signature verification.
> +  @param[in]  Message         Pointer to octet message to be verified.
> +  @param[in]  MsgSize         Size of the message in bytes.
> +  @param[in]  Signature       Pointer to RSASSA-PSS signature to be verified.
> +  @param[in]  SigSize         Size of signature in bytes.
> +  @param[in]  DigestLen       Length of digest for RSA operation.
> +  @param[in]  SaltLen         Salt length for PSS encoding.
> +
> +  @retval  TRUE   Valid signature encoded in RSASSA-PSS.
> +  @retval  FALSE  Invalid signature or invalid RSA context.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +RsaPssVerify (
> +  IN  VOID         *RsaContext,
> +  IN  CONST UINT8  *Message,
> +  IN  UINTN        MsgSize,
> +  IN  CONST UINT8  *Signature,
> +  IN  UINTN        SigSize,
> +  IN  UINT16       DigestLen,
> +  IN  UINT16       SaltLen
> +  );
> +
>  /**
>    Retrieve the RSA Private Key from the password-protected PEM key data.
> 
> diff --git a/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
> b/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
> index 4aae2aba95d6..49703fa4c963 100644
> --- a/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
> +++ b/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
> @@ -49,6 +49,8 @@
>    Pk/CryptX509.c
>    Pk/CryptAuthenticode.c
>    Pk/CryptTs.c
> +  Pk/CryptRsaPss.c
> +  Pk/CryptRsaPssSign.c
>    Pem/CryptPem.c
> 
>    SysCall/CrtWrapper.c
> diff --git a/CryptoPkg/Library/BaseCryptLib/PeiCryptLib.inf
> b/CryptoPkg/Library/BaseCryptLib/PeiCryptLib.inf
> index 7509e4273028..0cab5f3ce36c 100644
> --- a/CryptoPkg/Library/BaseCryptLib/PeiCryptLib.inf
> +++ b/CryptoPkg/Library/BaseCryptLib/PeiCryptLib.inf
> @@ -55,6 +55,8 @@
>    Pk/CryptX509Null.c
>    Pk/CryptAuthenticodeNull.c
>    Pk/CryptTsNull.c
> +  Pk/CryptRsaPss.c
> +  Pk/CryptRsaPssSignNull.c
>    Pem/CryptPemNull.c
>    Rand/CryptRandNull.c
> 
> diff --git a/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf
> b/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf
> index 70c985ec93dc..3d3a6fb94a77 100644
> --- a/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf
> +++ b/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf
> @@ -55,6 +55,8 @@
>    Pk/CryptX509.c
>    Pk/CryptAuthenticodeNull.c
>    Pk/CryptTsNull.c
> +  Pk/CryptRsaPssNull.c
> +  Pk/CryptRsaPssSignNull.c
>    Pem/CryptPem.c
> 
>    SysCall/CrtWrapper.c
> diff --git a/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf
> b/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf
> index 91ec3e03bf5e..07c376ce04bb 100644
> --- a/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf
> +++ b/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf
> @@ -53,6 +53,8 @@
>    Pk/CryptX509.c
>    Pk/CryptAuthenticodeNull.c
>    Pk/CryptTsNull.c
> +  Pk/CryptRsaPss.c
> +  Pk/CryptRsaPssSignNull.c
>    Pem/CryptPem.c
> 
>    SysCall/CrtWrapper.c
> diff --git a/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf
> b/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf
> index db506c32f724..b98f9635b27b 100644
> --- a/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf
> +++ b/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf
> @@ -44,6 +44,8 @@
>    Pk/CryptAuthenticode.c
>    Pk/CryptTs.c
>    Pem/CryptPem.c
> +  Pk/CryptRsaPss.c
> +  Pk/CryptRsaPssSign.c
> 
>    SysCall/UnitTestHostCrtWrapper.c
> 
> diff --git a/CryptoPkg/Library/BaseCryptLibNull/BaseCryptLibNull.inf
> b/CryptoPkg/Library/BaseCryptLibNull/BaseCryptLibNull.inf
> index 689af4fedd68..faf959827b90 100644
> --- a/CryptoPkg/Library/BaseCryptLibNull/BaseCryptLibNull.inf
> +++ b/CryptoPkg/Library/BaseCryptLibNull/BaseCryptLibNull.inf
> @@ -50,6 +50,8 @@
>    Pk/CryptTsNull.c
>    Pem/CryptPemNull.c
>    Rand/CryptRandNull.c
> +  Pk/CryptRsaPssNull.c
> +  Pk/CryptRsaPssSignNull.c
> 
>  [Packages]
>    MdePkg/MdePkg.dec
> diff --git a/CryptoPkg/Private/Protocol/Crypto.h
> b/CryptoPkg/Private/Protocol/Crypto.h
> index 17930a77a60e..e304302c9445 100644
> --- a/CryptoPkg/Private/Protocol/Crypto.h
> +++ b/CryptoPkg/Private/Protocol/Crypto.h
> @@ -3408,6 +3408,81 @@ EFI_STATUS
>    IN OUT UINTN                    *DataSize
>    );
> 
> +/**
> +  Carries out the RSA-SSA signature generation with EMSA-PSS encoding
> scheme.
> +
> +  This function carries out the RSA-SSA signature generation with EMSA-PSS
> encoding scheme defined in
> +  RFC 8017.
> +  Mask generation function is the same as the message digest algorithm.
> +  If the Signature buffer is too small to hold the contents of signature, FALSE
> +  is returned and SigSize is set to the required buffer size to obtain the signature.
> +
> +  If RsaContext is NULL, then return FALSE.
> +  If Message is NULL, then return FALSE.
> +  If MsgSize is zero or > INT_MAX, then return FALSE.
> +  If DigestLen is NOT 32, 48 or 64, return FALSE.
> +  If SaltLen is < DigestLen, then return FALSE.
> +  If SigSize is large enough but Signature is NULL, then return FALSE.
> +  If this interface is not supported, then return FALSE.
> +
> +  @param[in]      RsaContext   Pointer to RSA context for signature generation.
> +  @param[in]      Message      Pointer to octet message to be signed.
> +  @param[in]      MsgSize      Size of the message in bytes.
> +  @param[in]      DigestLen    Length of the digest in bytes to be used for RSA
> signature operation.
> +  @param[in]      SaltLen      Length of the salt in bytes to be used for PSS
> encoding.
> +  @param[out]     Signature    Pointer to buffer to receive RSA PSS signature.
> +  @param[in, out] SigSize      On input, the size of Signature buffer in bytes.
> +                               On output, the size of data returned in Signature buffer in
> bytes.
> +
> +  @retval  TRUE   Signature successfully generated in RSASSA-PSS.
> +  @retval  FALSE  Signature generation failed.
> +  @retval  FALSE  SigSize is too small.
> +  @retval  FALSE  This interface is not supported.
> +
> +**/
> +typedef
> +BOOLEAN
> +(EFIAPI* EDKII_CRYPTO_RSA_PSS_SIGN)(
> +  IN      VOID         *RsaContext,
> +  IN      CONST UINT8  *Message,
> +  IN      UINTN        MsgSize,
> +  IN      UINT16       DigestLen,
> +  IN      UINT16       SaltLen,
> +  OUT     UINT8        *Signature,
> +  IN OUT  UINTN        *SigSize
> +  );
> +
> +/**
> +  Verifies the RSA signature with RSASSA-PSS signature scheme defined in RFC
> 8017.
> +  Implementation determines salt length automatically from the signature
> encoding.
> +  Mask generation function is the same as the message digest algorithm.
> +  Salt length should atleast be equal to digest length.
> +
> +  @param[in]  RsaContext      Pointer to RSA context for signature verification.
> +  @param[in]  Message         Pointer to octet message to be verified.
> +  @param[in]  MsgSize         Size of the message in bytes.
> +  @param[in]  Signature       Pointer to RSASSA-PSS signature to be verified.
> +  @param[in]  SigSize         Size of signature in bytes.
> +  @param[in]  DigestLen       Length of digest for RSA operation.
> +  @param[in]  SaltLen         Salt length for PSS encoding.
> +
> +  @retval  TRUE   Valid signature encoded in RSASSA-PSS.
> +  @retval  FALSE  Invalid signature or invalid RSA context.
> +
> +**/
> +typedef
> +BOOLEAN
> +(EFIAPI* EDKII_CRYPTO_RSA_PSS_VERIFY)(
> +  IN  VOID         *RsaContext,
> +  IN  CONST UINT8  *Message,
> +  IN  UINTN        MsgSize,
> +  IN  CONST UINT8  *Signature,
> +  IN  UINTN        SigSize,
> +  IN  UINT16       DigestLen,
> +  IN  UINT16       SaltLen
> +  );
> +
> +
> 
>  ///
>  /// EDK II Crypto Protocol
> @@ -3593,6 +3668,9 @@ struct _EDKII_CRYPTO_PROTOCOL {
>    EDKII_CRYPTO_TLS_GET_HOST_PUBLIC_CERT           TlsGetHostPublicCert;
>    EDKII_CRYPTO_TLS_GET_HOST_PRIVATE_KEY           TlsGetHostPrivateKey;
>    EDKII_CRYPTO_TLS_GET_CERT_REVOCATION_LIST
> TlsGetCertRevocationList;
> +  /// RSA PSS
> +  EDKII_CRYPTO_RSA_PSS_SIGN                       RsaPssSign;
> +  EDKII_CRYPTO_RSA_PSS_VERIFY                     RsaPssVerify;
>  };
> 
>  extern GUID gEdkiiCryptoProtocolGuid;
> diff --git a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLib.h
> b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLib.h
> index 9d1cb150a113..25c1379f1a77 100644
> --- a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLib.h
> +++ b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLib.h
> @@ -83,6 +83,9 @@ extern TEST_DESC mPrngTest[];
>  extern UINTN mOaepTestNum;
>  extern TEST_DESC mOaepTest[];
> 
> +extern UINTN mRsaPssTestNum;
> +extern TEST_DESC mRsaPssTest[];
> +
>  /** Creates a framework you can use */
>  EFI_STATUS
>  EFIAPI
> diff --git
> a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibHost.inf
> b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibHost.inf
> index 300b98e40b33..00c869265080 100644
> --- a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibHost.inf
> +++ b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibHost.inf
> @@ -34,6 +34,7 @@
>    RandTests.c
>    Pkcs7EkuTests.c
>    OaepEncryptTests.c
> +  RsaPssTests.c
> 
>  [Packages]
>    MdePkg/MdePkg.dec
> diff --git
> a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibShell.inf
> b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibShell.inf
> index d5e7e0d01446..ca789aa6ada3 100644
> --- a/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibShell.inf
> +++ b/CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestBaseCryptLibShell.inf
> @@ -35,6 +35,7 @@
>    RandTests.c
>    Pkcs7EkuTests.c
>    OaepEncryptTests.c
> +  RsaPssTests.c
> 
>  [Packages]
>    MdePkg/MdePkg.dec
> --
> 2.14.3.windows.1



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