mirror of
https://github.com/Relintai/pandemonium_engine.git
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178 lines
6.9 KiB
C++
178 lines
6.9 KiB
C++
/**
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* \file pkcs5.h
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*
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* \brief PKCS#5 functions
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*
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* \author Mathias Olsson <mathias@kompetensum.com>
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBEDTLS_PKCS5_H
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#define MBEDTLS_PKCS5_H
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#include "mbedtls/asn1.h"
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#include "mbedtls/md.h"
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#include <stddef.h>
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#include <stdint.h>
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/** Bad input parameters to function. */
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#define MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA -0x2f80
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/** Unexpected ASN.1 data. */
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#define MBEDTLS_ERR_PKCS5_INVALID_FORMAT -0x2f00
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/** Requested encryption or digest alg not available. */
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#define MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE -0x2e80
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/** Given private key password does not allow for correct decryption. */
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#define MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH -0x2e00
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#define MBEDTLS_PKCS5_DECRYPT 0
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#define MBEDTLS_PKCS5_ENCRYPT 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(MBEDTLS_ASN1_PARSE_C)
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/**
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* \brief PKCS#5 PBES2 function
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*
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* \note When encrypting, #MBEDTLS_CIPHER_PADDING_PKCS7 must
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* be enabled at compile time.
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*
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* \warning When decrypting:
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* - if #MBEDTLS_CIPHER_PADDING_PKCS7 is enabled at compile
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* time, this function validates the CBC padding and returns
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* #MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH if the padding is
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* invalid. Note that this can help active adversaries
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* attempting to brute-forcing the password. Note also that
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* there is no guarantee that an invalid password will be
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* detected (the chances of a valid padding with a random
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* password are about 1/255).
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* - if #MBEDTLS_CIPHER_PADDING_PKCS7 is disabled at compile
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* time, this function does not validate the CBC padding.
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*
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* \param pbe_params the ASN.1 algorithm parameters
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* \param mode either #MBEDTLS_PKCS5_DECRYPT or #MBEDTLS_PKCS5_ENCRYPT
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* \param pwd password to use when generating key
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* \param pwdlen length of password
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* \param data data to process
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* \param datalen length of data
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* \param output Output buffer.
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* On success, it contains the encrypted or decrypted data,
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* possibly followed by the CBC padding.
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* On failure, the content is indeterminate.
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* For decryption, there must be enough room for \p datalen
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* bytes.
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* For encryption, there must be enough room for
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* \p datalen + 1 bytes, rounded up to the block size of
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* the block cipher identified by \p pbe_params.
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*
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* \returns 0 on success, or a MBEDTLS_ERR_XXX code if verification fails.
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*/
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int mbedtls_pkcs5_pbes2(const mbedtls_asn1_buf *pbe_params, int mode,
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const unsigned char *pwd, size_t pwdlen,
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const unsigned char *data, size_t datalen,
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unsigned char *output);
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#if defined(MBEDTLS_CIPHER_PADDING_PKCS7)
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/**
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* \brief PKCS#5 PBES2 function
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*
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* \warning When decrypting:
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* - This function validates the CBC padding and returns
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* #MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH if the padding is
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* invalid. Note that this can help active adversaries
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* attempting to brute-forcing the password. Note also that
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* there is no guarantee that an invalid password will be
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* detected (the chances of a valid padding with a random
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* password are about 1/255).
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*
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* \param pbe_params the ASN.1 algorithm parameters
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* \param mode either #MBEDTLS_PKCS5_DECRYPT or #MBEDTLS_PKCS5_ENCRYPT
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* \param pwd password to use when generating key
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* \param pwdlen length of password
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* \param data data to process
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* \param datalen length of data
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* \param output Output buffer.
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* On success, it contains the decrypted data.
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* On failure, the content is indetermidate.
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* For decryption, there must be enough room for \p datalen
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* bytes.
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* For encryption, there must be enough room for
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* \p datalen + 1 bytes, rounded up to the block size of
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* the block cipher identified by \p pbe_params.
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* \param output_size size of output buffer.
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* This must be big enough to accommodate for output plus
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* padding data.
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* \param output_len On success, length of actual data written to the output buffer.
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*
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* \returns 0 on success, or a MBEDTLS_ERR_XXX code if parsing or decryption fails.
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*/
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int mbedtls_pkcs5_pbes2_ext(const mbedtls_asn1_buf *pbe_params, int mode,
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const unsigned char *pwd, size_t pwdlen,
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const unsigned char *data, size_t datalen,
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unsigned char *output, size_t output_size,
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size_t *output_len);
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#endif /* MBEDTLS_CIPHER_PADDING_PKCS7 */
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#endif /* MBEDTLS_ASN1_PARSE_C */
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/**
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* \brief PKCS#5 PBKDF2 using HMAC
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*
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* \param ctx Generic HMAC context
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* \param password Password to use when generating key
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* \param plen Length of password
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* \param salt Salt to use when generating key
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* \param slen Length of salt
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* \param iteration_count Iteration count
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* \param key_length Length of generated key in bytes
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* \param output Generated key. Must be at least as big as key_length
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*
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* \returns 0 on success, or a MBEDTLS_ERR_XXX code if verification fails.
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*/
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int mbedtls_pkcs5_pbkdf2_hmac(mbedtls_md_context_t *ctx, const unsigned char *password,
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size_t plen, const unsigned char *salt, size_t slen,
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unsigned int iteration_count,
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uint32_t key_length, unsigned char *output);
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#if defined(MBEDTLS_SELF_TEST)
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*/
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int mbedtls_pkcs5_self_test(int verbose);
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#endif /* MBEDTLS_SELF_TEST */
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#ifdef __cplusplus
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}
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#endif
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#endif /* pkcs5.h */
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