1 files changed, 98 insertions, 0 deletions
diff --git a/movement/lib/TOTP/sha1.h b/movement/lib/TOTP/sha1.h
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+++ b/movement/lib/TOTP/sha1.h
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+/**
+ * \file sha1.h
+ *
+ * \brief SHA-1 cryptographic hash function
+ *
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  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.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+#ifndef MBEDTLS_SHA1_H
+#define MBEDTLS_SHA1_H
+
+#define SHA1_DIGEST_LENGTH 20
+#define SHA1_BLOCK_LENGTH 64
+#define HMAC_IPAD 0x36
+#define HMAC_OPAD 0x5c
+
+#include <stddef.h>
+#include <stdint.h>
+
+/**
+ * \brief          SHA-1 context structure
+ */
+typedef struct
+{
+    uint32_t total[2];          /*!< number of bytes processed  */
+    uint32_t state[5];          /*!< intermediate digest state  */
+    unsigned char buffer[SHA1_BLOCK_LENGTH];   /*!< data block being processed */
+}
+mbedtls_sha1_context;
+
+/**
+ * \brief          Initialize SHA-1 context
+ *
+ * \param ctx      SHA-1 context to be initialized
+ */
+void mbedtls_sha1_init( mbedtls_sha1_context *ctx );
+
+/**
+ * \brief          Clear SHA-1 context
+ *
+ * \param ctx      SHA-1 context to be cleared
+ */
+void mbedtls_sha1_free( mbedtls_sha1_context *ctx );
+
+/**
+ * \brief          SHA-1 context setup
+ *
+ * \param ctx      context to be initialized
+ */
+void mbedtls_sha1_starts( mbedtls_sha1_context *ctx );
+
+/**
+ * \brief          SHA-1 process buffer
+ *
+ * \param ctx      SHA-1 context
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ */
+void mbedtls_sha1_update( mbedtls_sha1_context *ctx, const unsigned char *input, size_t ilen );
+
+/**
+ * \brief          SHA-1 final digest
+ *
+ * \param ctx      SHA-1 context
+ * \param output   SHA-1 checksum result
+ */
+void mbedtls_sha1_finish( mbedtls_sha1_context *ctx, unsigned char output[SHA1_DIGEST_LENGTH] );
+
+/* Internal use */
+void mbedtls_sha1_process( mbedtls_sha1_context *ctx, const unsigned char data[SHA1_BLOCK_LENGTH] );
+
+/**
+ * \brief          Output = SHA-1( input buffer )
+ *
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ * \param output   SHA-1 checksum result
+ */
+void mbedtls_sha1( const unsigned char *input, size_t ilen, unsigned char output[SHA1_DIGEST_LENGTH] );
+void HMAC_SHA1(const uint8_t* key, size_t key_length, const uint8_t *in, size_t n, uint8_t out[SHA1_DIGEST_LENGTH]);
+uint32_t TOTP_HMAC_SHA1(const uint8_t* key, size_t key_length, const uint8_t *in, size_t n);
+
+
+#endif /* mbedtls_sha1.h */