esp-idf/components/esp-tls/esp-tls-crypto/esp_tls_crypto.h
Aditya Patwardhan 8d65cee0a9 esp32/esp-tls: Make crypto abstraction layer inside esp-tls
Which allows several components to use cryptographic functions from
esp-tls which is the current abstraction layer.
2020-10-23 05:16:06 +00:00

69 lines
2.1 KiB
C

// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _ESP_TLS_CRYPTO_H
#define _ESP_TLS_CRYPTO_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Calculate sha1 sum
* esp-tls abstraction for crypto sha1 API, calculates the sha1 sum(digest) of
* the data provided in input which is of ilen size and returns
* a 20 char sha1 sum
* @param[in] input Input array
* @param[in] ilen Length of Input array
* @param[out] output calculated sha1 sum
*
* @return
* mbedtls stack:-
* - MBEDTLS_ERR_SHA1_BAD_INPUT_DATA on BAD INPUT.
* - 0 on success.
* wolfssl stack:-
* - -1 on failure.
* - 0 on success.
*/
int esp_crypto_sha1(const unsigned char *input,
size_t ilen,
unsigned char output[20]);
/**
* @brief Do Base64 encode of the src data
*
* @param[in] dst destination buffer
* @param[in] dlen length of destination buffer
* @param[out] olen number of bytes written
* @param[in] src src buffer to be encoded
* @param[in] slen src buffer len
*
* @return
* mbedtls stack:-
* - MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL if buffer is of insufficient size.
* - 0 if successful.
* wolfssl stack:-
* - <0 on failure.
* - 0 if succcessful.
*/
int esp_crypto_base64_encode(unsigned char *dst, size_t dlen,
size_t *olen, const unsigned char *src,
size_t slen);
#ifdef __cplusplus
}
#endif
#endif /* _ESP_TLS_CRYPTO_H */