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/* ---- PRNG Stuff ---- */
typedef union Prng_state {
char dummy[1];
} prng_state;
/** PRNG descriptor */
extern struct ltc_prng_descriptor {
/** Name of the PRNG */
char *name;
/** size in bytes of exported state */
int export_size;
/** Start a PRNG state
@param prng [out] The state to initialize
@return CRYPT_OK if successful
*/
int (*start) (prng_state * prng);
/** Add entropy to the PRNG
@param in The entropy
@param inlen Length of the entropy (octets)\
@param prng The PRNG state
@return CRYPT_OK if successful
*/
int (*add_entropy) (const unsigned char *in, unsigned long inlen,
prng_state * prng);
/** Ready a PRNG state to read from
@param prng The PRNG state to ready
@return CRYPT_OK if successful
*/
int (*ready) (prng_state * prng);
/** Read from the PRNG
@param out [out] Where to store the data
@param outlen Length of data desired (octets)
@param prng The PRNG state to read from
@return Number of octets read
*/
unsigned long (*read) (unsigned char *out, unsigned long outlen,
prng_state * prng);
/** Terminate a PRNG state
@param prng The PRNG state to terminate
@return CRYPT_OK if successful
*/
int (*done) (prng_state * prng);
/** Export a PRNG state
@param out [out] The destination for the state
@param outlen [in/out] The max size and resulting size of the PRNG state
@param prng The PRNG to export
@return CRYPT_OK if successful
*/
int (*pexport) (unsigned char *out, unsigned long *outlen,
prng_state * prng);
/** Import a PRNG state
@param in The data to import
@param inlen The length of the data to import (octets)
@param prng The PRNG to initialize/import
@return CRYPT_OK if successful
*/
int (*pimport) (const unsigned char *in, unsigned long inlen,
prng_state * prng);
/** Self-test the PRNG
@return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled
*/
int (*test) (void);
} prng_descriptor[];
int linux_start(prng_state * prng);
int linux_add_entropy(const unsigned char *in, unsigned long inlen,
prng_state * prng);
int linux_ready(prng_state * prng);
unsigned long linux_read(unsigned char *out, unsigned long outlen,
prng_state * prng);
int linux_done(prng_state * prng);
int linux_export(unsigned char *out, unsigned long *outlen, prng_state * prng);
int linux_import(const unsigned char *in, unsigned long inlen,
prng_state * prng);
int linux_test(void);
extern const struct ltc_prng_descriptor linux_desc;
int find_prng(const char *name);
int register_prng(const struct ltc_prng_descriptor *prng);
int unregister_prng(const struct ltc_prng_descriptor *prng);
int prng_is_valid(int idx);
/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_prng.h,v $ */
/* $Revision: 1.9 $ */
/* $Date: 2007/05/12 14:32:35 $ */
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