CryptHkdf.c

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#include "InternalCryptLib.h"
#include <openssl/evp.h>
#include <openssl/kdf.h>
 
STATIC
BOOLEAN
HkdfMdExtractAndExpand (
  IN   CONST EVP_MD  *Md,
  IN   CONST UINT8   *Key,
  IN   UINTN         KeySize,
  IN   CONST UINT8   *Salt,
  IN   UINTN         SaltSize,
  IN   CONST UINT8   *Info,
  IN   UINTN         InfoSize,
  OUT  UINT8         *Out,
  IN   UINTN         OutSize
  )
{
  EVP_PKEY_CTX  *pHkdfCtx;
  BOOLEAN       Result;
 
  if ((Key == NULL) || (Salt == NULL) || (Info == NULL) || (Out == NULL) ||
      (KeySize > INT_MAX) || (SaltSize > INT_MAX) || (InfoSize > INT_MAX) || (OutSize > INT_MAX))
  {
    return FALSE;
  }
 
  pHkdfCtx = EVP_PKEY_CTX_new_id (EVP_PKEY_HKDF, NULL);
  if (pHkdfCtx == NULL) {
    return FALSE;
  }
 
  Result = EVP_PKEY_derive_init (pHkdfCtx) > 0;
  if (Result) {
    Result = EVP_PKEY_CTX_set_hkdf_md (pHkdfCtx, Md) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_set1_hkdf_salt (pHkdfCtx, Salt, (UINT32)SaltSize) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_set1_hkdf_key (pHkdfCtx, Key, (UINT32)KeySize) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_add1_hkdf_info (pHkdfCtx, Info, (UINT32)InfoSize) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_derive (pHkdfCtx, Out, &OutSize) > 0;
  }
 
  EVP_PKEY_CTX_free (pHkdfCtx);
  pHkdfCtx = NULL;
  return Result;
}
 
STATIC
BOOLEAN
HkdfMdExtract (
  IN CONST EVP_MD  *Md,
  IN CONST UINT8   *Key,
  IN  UINTN        KeySize,
  IN CONST UINT8   *Salt,
  IN UINTN         SaltSize,
  OUT UINT8        *PrkOut,
  UINTN            PrkOutSize
  )
{
  EVP_PKEY_CTX  *pHkdfCtx;
  BOOLEAN       Result;
 
  if ((Key == NULL) || (Salt == NULL) || (PrkOut == NULL) ||
      (KeySize > INT_MAX) || (SaltSize > INT_MAX) ||
      (PrkOutSize > INT_MAX))
  {
    return FALSE;
  }
 
  pHkdfCtx = EVP_PKEY_CTX_new_id (EVP_PKEY_HKDF, NULL);
  if (pHkdfCtx == NULL) {
    return FALSE;
  }
 
  Result = EVP_PKEY_derive_init (pHkdfCtx) > 0;
  if (Result) {
    Result = EVP_PKEY_CTX_set_hkdf_md (pHkdfCtx, Md) > 0;
  }
 
  if (Result) {
    Result =
      EVP_PKEY_CTX_hkdf_mode (
        pHkdfCtx,
        EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY
        ) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_set1_hkdf_salt (
               pHkdfCtx,
               Salt,
               (uint32_t)SaltSize
               ) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_set1_hkdf_key (
               pHkdfCtx,
               Key,
               (uint32_t)KeySize
               ) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_derive (pHkdfCtx, PrkOut, &PrkOutSize) > 0;
  }
 
  EVP_PKEY_CTX_free (pHkdfCtx);
  pHkdfCtx = NULL;
  return Result;
}
 
STATIC
BOOLEAN
HkdfMdExpand (
  IN   CONST EVP_MD  *Md,
  IN   CONST UINT8   *Prk,
  IN   UINTN         PrkSize,
  IN   CONST UINT8   *Info,
  IN   UINTN         InfoSize,
  OUT  UINT8         *Out,
  IN   UINTN         OutSize
  )
{
  EVP_PKEY_CTX  *pHkdfCtx;
  BOOLEAN       Result;
 
  if ((Prk == NULL) || (Info == NULL) || (Out == NULL) ||
      (PrkSize > INT_MAX) || (InfoSize > INT_MAX) || (OutSize > INT_MAX))
  {
    return FALSE;
  }
 
  pHkdfCtx = EVP_PKEY_CTX_new_id (EVP_PKEY_HKDF, NULL);
  if (pHkdfCtx == NULL) {
    return FALSE;
  }
 
  Result = EVP_PKEY_derive_init (pHkdfCtx) > 0;
  if (Result) {
    Result = EVP_PKEY_CTX_set_hkdf_md (pHkdfCtx, Md) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_hkdf_mode (pHkdfCtx, EVP_PKEY_HKDEF_MODE_EXPAND_ONLY) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_set1_hkdf_key (pHkdfCtx, Prk, (UINT32)PrkSize) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_CTX_add1_hkdf_info (pHkdfCtx, Info, (UINT32)InfoSize) > 0;
  }
 
  if (Result) {
    Result = EVP_PKEY_derive (pHkdfCtx, Out, &OutSize) > 0;
  }
 
  EVP_PKEY_CTX_free (pHkdfCtx);
  pHkdfCtx = NULL;
  return Result;
}
 
BOOLEAN
EFIAPI
HkdfSha256ExtractAndExpand (
  IN   CONST UINT8  *Key,
  IN   UINTN        KeySize,
  IN   CONST UINT8  *Salt,
  IN   UINTN        SaltSize,
  IN   CONST UINT8  *Info,
  IN   UINTN        InfoSize,
  OUT  UINT8        *Out,
  IN   UINTN        OutSize
  )
{
  return HkdfMdExtractAndExpand (EVP_sha256 (), Key, KeySize, Salt, SaltSize, Info, InfoSize, Out, OutSize);
}
 
BOOLEAN
EFIAPI
HkdfSha256Extract (
  IN CONST UINT8  *Key,
  IN UINTN        KeySize,
  IN CONST UINT8  *Salt,
  IN UINTN        SaltSize,
  OUT UINT8       *PrkOut,
  UINTN           PrkOutSize
  )
{
  return HkdfMdExtract (
           EVP_sha256 (),
           Key,
           KeySize,
           Salt,
           SaltSize,
           PrkOut,
           PrkOutSize
           );
}
 
BOOLEAN
EFIAPI
HkdfSha256Expand (
  IN   CONST UINT8  *Prk,
  IN   UINTN        PrkSize,
  IN   CONST UINT8  *Info,
  IN   UINTN        InfoSize,
  OUT  UINT8        *Out,
  IN   UINTN        OutSize
  )
{
  return HkdfMdExpand (EVP_sha256 (), Prk, PrkSize, Info, InfoSize, Out, OutSize);
}
 
BOOLEAN
EFIAPI
HkdfSha384ExtractAndExpand (
  IN   CONST UINT8  *Key,
  IN   UINTN        KeySize,
  IN   CONST UINT8  *Salt,
  IN   UINTN        SaltSize,
  IN   CONST UINT8  *Info,
  IN   UINTN        InfoSize,
  OUT  UINT8        *Out,
  IN   UINTN        OutSize
  )
{
  return HkdfMdExtractAndExpand (EVP_sha384 (), Key, KeySize, Salt, SaltSize, Info, InfoSize, Out, OutSize);
}
 
BOOLEAN
EFIAPI
HkdfSha384Extract (
  IN CONST UINT8  *Key,
  IN UINTN        KeySize,
  IN CONST UINT8  *Salt,
  IN UINTN        SaltSize,
  OUT UINT8       *PrkOut,
  UINTN           PrkOutSize
  )
{
  return HkdfMdExtract (
           EVP_sha384 (),
           Key,
           KeySize,
           Salt,
           SaltSize,
           PrkOut,
           PrkOutSize
           );
}
 
BOOLEAN
EFIAPI
HkdfSha384Expand (
  IN   CONST UINT8  *Prk,
  IN   UINTN        PrkSize,
  IN   CONST UINT8  *Info,
  IN   UINTN        InfoSize,
  OUT  UINT8        *Out,
  IN   UINTN        OutSize
  )
{
  return HkdfMdExpand (EVP_sha384 (), Prk, PrkSize, Info, InfoSize, Out, OutSize);
}