mirror of https://github.com/acidanthera/audk.git
102 lines
3.5 KiB
C
102 lines
3.5 KiB
C
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/** @file
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PBKDF2 Key Derivation Function Wrapper Implementation over OpenSSL.
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Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "InternalCryptLib.h"
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#include <openssl/evp.h>
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#include <openssl/hmac.h>
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/**
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Derives a key from a password using a salt and iteration count, based on PKCS#5 v2.0
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password based encryption key derivation function PBKDF2, as specified in RFC 2898.
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If Password or Salt or OutKey is NULL, then return FALSE.
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If the hash algorithm could not be determined, then return FALSE.
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@param[in] PasswordLength Length of input password in bytes.
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@param[in] Password Pointer to the array for the password.
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@param[in] SaltLength Size of the Salt in bytes.
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@param[in] Salt Pointer to the Salt.
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@param[in] IterationCount Number of iterations to perform. Its value should be
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greater than or equal to 1.
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@param[in] DigestSize Size of the message digest to be used (eg. SHA256_DIGEST_SIZE).
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NOTE: DigestSize will be used to determine the hash algorithm.
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Only SHA1_DIGEST_SIZE or SHA256_DIGEST_SIZE is supported.
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@param[in] KeyLength Size of the derived key buffer in bytes.
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@param[out] OutKey Pointer to the output derived key buffer.
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@retval TRUE A key was derived successfully.
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@retval FALSE One of the pointers was NULL or one of the sizes was too large.
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@retval FALSE The hash algorithm could not be determined from the digest size.
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@retval FALSE The key derivation operation failed.
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**/
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BOOLEAN
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EFIAPI
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Pkcs5HashPassword (
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IN UINTN PasswordLength,
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IN CONST CHAR8 *Password,
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IN UINTN SaltLength,
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IN CONST UINT8 *Salt,
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IN UINTN IterationCount,
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IN UINTN DigestSize,
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IN UINTN KeyLength,
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OUT UINT8 *OutKey
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)
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{
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CONST EVP_MD *HashAlg;
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HashAlg = NULL;
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//
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// Parameter Checking.
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//
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if ((Password == NULL) || (Salt == NULL) || (OutKey == NULL)) {
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return FALSE;
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}
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if ((PasswordLength == 0) || (PasswordLength > INT_MAX) ||
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(SaltLength == 0) || (SaltLength > INT_MAX) ||
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(KeyLength == 0) || (KeyLength > INT_MAX) ||
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(IterationCount < 1) || (IterationCount > INT_MAX)) {
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return FALSE;
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}
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//
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// Make sure the digest algorithm is supported.
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//
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switch (DigestSize) {
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case SHA1_DIGEST_SIZE:
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HashAlg = EVP_sha1();
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break;
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case SHA256_DIGEST_SIZE:
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HashAlg = EVP_sha256();
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break;
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default:
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return FALSE;
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break;
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}
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//
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// Perform password-based key derivation routines.
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//
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return (BOOLEAN)PKCS5_PBKDF2_HMAC (
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(const char *)Password,
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(int)PasswordLength,
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(const unsigned char *)Salt,
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(int)SaltLength,
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(int)IterationCount,
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HashAlg,
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(int)KeyLength,
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(unsigned char *)OutKey
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);
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}
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