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https://github.com/espressif/esp-idf.git
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8d65cee0a9
Which allows several components to use cryptographic functions from esp-tls which is the current abstraction layer.
86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may 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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// 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,
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// WITHOUT 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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#include "esp_tls_crypto.h"
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#include "esp_log.h"
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#include "esp_err.h"
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static const char *TAG = "esp_crypto";
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#ifdef CONFIG_ESP_TLS_USING_MBEDTLS
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#include "mbedtls/sha1.h"
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#include "mbedtls/base64.h"
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#define _esp_crypto_sha1 esp_crypto_sha1_mbedtls
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#define _esp_crypto_base64_encode esp_crypto_bas64_encode_mbedtls
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#elif CONFIG_ESP_TLS_USING_WOLFSSL
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#include "wolfssl/ssl.h" /* SHA functions are listed in wolfssl/ssl.h */
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#include "wolfssl/wolfcrypt/coding.h"
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#define _esp_crypto_sha1 esp_crypto_sha1_wolfSSL
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#define _esp_crypto_base64_encode esp_crypto_base64_encode_woflSSL
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#endif
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#ifdef CONFIG_ESP_TLS_USING_MBEDTLS
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static int esp_crypto_sha1_mbedtls( const unsigned char *input,
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size_t ilen,
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unsigned char output[20])
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{
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int ret = mbedtls_sha1_ret(input, ilen, output);
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if (ret != 0) {
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ESP_LOGE(TAG, "Error in calculating sha1 sum , Returned 0x%02X", ret);
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}
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return ret;
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}
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static int esp_crypto_bas64_encode_mbedtls( unsigned char *dst, size_t dlen,
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size_t *olen, const unsigned char *src,
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size_t slen)
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{
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return mbedtls_base64_encode(dst, dlen, olen, src, slen);
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}
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#elif CONFIG_ESP_TLS_USING_WOLFSSL
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static int esp_crypto_sha1_wolfSSL( const unsigned char *input,
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size_t ilen,
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unsigned char output[20])
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{
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unsigned char *ret = wolfSSL_SHA1(input, ilen, output);
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if (ret == NULL) {
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ESP_LOGE(TAG, "Error in calculating sha1 sum");
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return -1;
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}
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return 0;
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}
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static int esp_crypto_base64_encode_woflSSL(unsigned char *dst, size_t dlen, size_t *olen,
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const unsigned char *src, size_t slen)
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{
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*olen = dlen;
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return Base64_Encode((const byte *) src, (word32) slen, (byte *) dst, (word32 *) olen);
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}
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#else
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#error "No TLS/SSL Stack selected"
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#endif
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int esp_crypto_sha1( const unsigned char *input,
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size_t ilen,
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unsigned char output[20])
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{
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return _esp_crypto_sha1(input, ilen, output);
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}
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int esp_crypto_base64_encode(unsigned char *dst, size_t dlen, size_t *olen,
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const unsigned char *src, size_t slen )
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{
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return _esp_crypto_base64_encode(dst, dlen, olen, src, slen);
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}
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