1 /* ppp-crypto.h - Generic API for access to crypto/digest functions.
3 * Copyright (c) 2022 Eivind Næss. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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21 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
22 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
23 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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37 #ifndef MD5_DIGEST_LENGTH
38 #define MD5_DIGEST_LENGTH 16
41 #ifndef MD4_DIGEST_LENGTH
42 #define MD4_DIGEST_LENGTH 16
45 #ifndef SHA_DIGEST_LENGTH
46 #define SHA_DIGEST_LENGTH 20
52 typedef struct _PPP_MD_CTX PPP_MD_CTX;
53 typedef struct _PPP_MD PPP_MD;
56 * Create a new Message Digest context object
58 PPP_MD_CTX *PPP_MD_CTX_new();
61 * Free the Message Digest context
63 void PPP_MD_CTX_free(PPP_MD_CTX*);
66 * Fetch the MD4 algorithm
68 const PPP_MD *PPP_md4(void);
71 * Fetch the MD5 algorithm
73 const PPP_MD *PPP_md5(void);
76 * Fetch the SHA1 algorithm
78 const PPP_MD *PPP_sha1(void);
81 * Initializes a context object
83 int PPP_DigestInit(PPP_MD_CTX *ctx,
87 * For each iteration update the context with more input
89 int PPP_DigestUpdate(PPP_MD_CTX *ctx,
90 const void *data, size_t cnt);
93 * Perform the final operation, and output the digest
95 int PPP_DigestFinal(PPP_MD_CTX *ctx,
96 unsigned char *out, unsigned int *outlen);
99 struct _PPP_CIPHER_CTX;
102 typedef struct _PPP_CIPHER_CTX PPP_CIPHER_CTX;
103 typedef struct _PPP_CIPHER PPP_CIPHER;
107 * Create a new Cipher Context
109 PPP_CIPHER_CTX *PPP_CIPHER_CTX_new(void);
112 * Release the Cipher Context
114 void PPP_CIPHER_CTX_free(PPP_CIPHER_CTX *ctx);
117 * Fetch the DES in ECB mode cipher algorithm
119 const PPP_CIPHER *PPP_des_ecb(void);
122 * Set the particular data directly
124 void PPP_CIPHER_CTX_set_cipher_data(PPP_CIPHER_CTX *ctx,
125 const unsigned char *key);
128 * Initialize the crypto operation
130 int PPP_CipherInit(PPP_CIPHER_CTX *ctx,
131 const PPP_CIPHER *cipher,
132 const unsigned char *key,
133 const unsigned char *iv,
137 * Encrypt input data, and store it in the output buffer
139 int PPP_CipherUpdate(PPP_CIPHER_CTX *ctx,
140 unsigned char *out, int *outl,
141 const unsigned char *in, int inl);
144 * Finish the crypto operation, and fetch any outstanding bytes
146 int PPP_CipherFinal(PPP_CIPHER_CTX *ctx,
147 unsigned char *out, int *outl);
150 * Global initialization, must be called once per process
152 int PPP_crypto_init();
155 * Global deinitialization
157 int PPP_crypto_deinit();
163 #endif // PPP_CRYPTO_H