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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22 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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33 #ifndef MD5_DIGEST_LENGTH
34 #define MD5_DIGEST_LENGTH 16
37 #ifndef MD4_DIGEST_LENGTH
38 #define MD4_DIGEST_LENGTH 16
41 #ifndef SHA_DIGEST_LENGTH
42 #define SHA_DIGEST_LENGTH 20
48 typedef struct _PPP_MD_CTX PPP_MD_CTX;
49 typedef struct _PPP_MD PPP_MD;
52 * Create a new Message Digest context object
54 PPP_MD_CTX *PPP_MD_CTX_new();
57 * Free the Message Digest context
59 void PPP_MD_CTX_free(PPP_MD_CTX*);
62 * Fetch the MD4 algorithm
64 const PPP_MD *PPP_md4(void);
67 * Fetch the MD5 algorithm
69 const PPP_MD *PPP_md5(void);
72 * Fetch the SHA1 algorithm
74 const PPP_MD *PPP_sha1(void);
77 * Initializes a context object
79 int PPP_DigestInit(PPP_MD_CTX *ctx,
83 * For each iteration update the context with more input
85 int PPP_DigestUpdate(PPP_MD_CTX *ctx,
86 const void *data, size_t cnt);
89 * Perform the final operation, and output the digest
91 int PPP_DigestFinal(PPP_MD_CTX *ctx,
92 unsigned char *out, unsigned int *outlen);
95 struct _PPP_CIPHER_CTX;
98 typedef struct _PPP_CIPHER_CTX PPP_CIPHER_CTX;
99 typedef struct _PPP_CIPHER PPP_CIPHER;
103 * Create a new Cipher Context
105 PPP_CIPHER_CTX *PPP_CIPHER_CTX_new(void);
108 * Release the Cipher Context
110 void PPP_CIPHER_CTX_free(PPP_CIPHER_CTX *ctx);
113 * Fetch the DES in ECB mode cipher algorithm
115 const PPP_CIPHER *PPP_des_ecb(void);
118 * Set the particular data directly
120 void PPP_CIPHER_CTX_set_cipher_data(PPP_CIPHER_CTX *ctx,
121 const unsigned char *key);
124 * Initialize the crypto operation
126 int PPP_CipherInit(PPP_CIPHER_CTX *ctx,
127 const PPP_CIPHER *cipher,
128 const unsigned char *key,
129 const unsigned char *iv,
133 * Encrypt input data, and store it in the output buffer
135 int PPP_CipherUpdate(PPP_CIPHER_CTX *ctx,
136 unsigned char *out, int *outl,
137 const unsigned char *in, int inl);
140 * Finish the crypto operation, and fetch any outstanding bytes
142 int PPP_CipherFinal(PPP_CIPHER_CTX *ctx,
143 unsigned char *out, int *outl);
146 * Global initialization, must be called once per process
148 int PPP_crypto_init();
151 * Global deinitialization
153 int PPP_crypto_deinit();