md2.h 3.2 KB

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  1. /**
  2. * \file md2.h
  3. *
  4. * \brief MD2 message digest algorithm (hash function)
  5. *
  6. * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  7. * SPDX-License-Identifier: Apache-2.0
  8. *
  9. * Licensed under the Apache License, Version 2.0 (the "License"); you may
  10. * not use this file except in compliance with the License.
  11. * You may obtain a copy of the License at
  12. *
  13. * http://www.apache.org/licenses/LICENSE-2.0
  14. *
  15. * Unless required by applicable law or agreed to in writing, software
  16. * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17. * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18. * See the License for the specific language governing permissions and
  19. * limitations under the License.
  20. *
  21. * This file is part of mbed TLS (https://tls.mbed.org)
  22. */
  23. #ifndef MBEDTLS_MD2_H
  24. #define MBEDTLS_MD2_H
  25. #if !defined(MBEDTLS_CONFIG_FILE)
  26. #include "config.h"
  27. #else
  28. #include MBEDTLS_CONFIG_FILE
  29. #endif
  30. #include <stddef.h>
  31. #if !defined(MBEDTLS_MD2_ALT)
  32. // Regular implementation
  33. //
  34. #ifdef __cplusplus
  35. extern "C" {
  36. #endif
  37. /**
  38. * \brief MD2 context structure
  39. */
  40. typedef struct
  41. {
  42. unsigned char cksum[16]; /*!< checksum of the data block */
  43. unsigned char state[48]; /*!< intermediate digest state */
  44. unsigned char buffer[16]; /*!< data block being processed */
  45. size_t left; /*!< amount of data in buffer */
  46. }
  47. mbedtls_md2_context;
  48. /**
  49. * \brief Initialize MD2 context
  50. *
  51. * \param ctx MD2 context to be initialized
  52. */
  53. void mbedtls_md2_init( mbedtls_md2_context *ctx );
  54. /**
  55. * \brief Clear MD2 context
  56. *
  57. * \param ctx MD2 context to be cleared
  58. */
  59. void mbedtls_md2_free( mbedtls_md2_context *ctx );
  60. /**
  61. * \brief Clone (the state of) an MD2 context
  62. *
  63. * \param dst The destination context
  64. * \param src The context to be cloned
  65. */
  66. void mbedtls_md2_clone( mbedtls_md2_context *dst,
  67. const mbedtls_md2_context *src );
  68. /**
  69. * \brief MD2 context setup
  70. *
  71. * \param ctx context to be initialized
  72. */
  73. void mbedtls_md2_starts( mbedtls_md2_context *ctx );
  74. /**
  75. * \brief MD2 process buffer
  76. *
  77. * \param ctx MD2 context
  78. * \param input buffer holding the data
  79. * \param ilen length of the input data
  80. */
  81. void mbedtls_md2_update( mbedtls_md2_context *ctx, const unsigned char *input, size_t ilen );
  82. /**
  83. * \brief MD2 final digest
  84. *
  85. * \param ctx MD2 context
  86. * \param output MD2 checksum result
  87. */
  88. void mbedtls_md2_finish( mbedtls_md2_context *ctx, unsigned char output[16] );
  89. #ifdef __cplusplus
  90. }
  91. #endif
  92. #else /* MBEDTLS_MD2_ALT */
  93. #include "md2_alt.h"
  94. #endif /* MBEDTLS_MD2_ALT */
  95. #ifdef __cplusplus
  96. extern "C" {
  97. #endif
  98. /**
  99. * \brief Output = MD2( input buffer )
  100. *
  101. * \param input buffer holding the data
  102. * \param ilen length of the input data
  103. * \param output MD2 checksum result
  104. */
  105. void mbedtls_md2( const unsigned char *input, size_t ilen, unsigned char output[16] );
  106. /**
  107. * \brief Checkup routine
  108. *
  109. * \return 0 if successful, or 1 if the test failed
  110. */
  111. int mbedtls_md2_self_test( int verbose );
  112. /* Internal use */
  113. void mbedtls_md2_process( mbedtls_md2_context *ctx );
  114. #ifdef __cplusplus
  115. }
  116. #endif
  117. #endif /* mbedtls_md2.h */