struct_rng_alg (9) - Linux Manuals

struct_rng_alg: random number generator definition

Command to display struct_rng_alg manual in Linux: $ man 9 struct_rng_alg

NAME

struct_rng_alg - random number generator definition

SYNOPSIS

struct rng_alg {
  int (* generate) (struct crypto_rng *tfm,const u8 *src, unsigned int slen,u8 *dst, unsigned int dlen);
  int (* seed) (struct crypto_rng *tfm, const u8 *seed, unsigned int slen);
  void (* set_ent) (struct crypto_rng *tfm, const u8 *data,unsigned int len);
  unsigned int seedsize;
  struct crypto_alg base;
};

MEMBERS

generate

: The function defined by this variable obtains a random number. The random number generator transform must generate the random number out of the context provided with this call, plus any additional data if provided to the call.

seed

: Seed or reseed the random number generator. With the invocation of this function call, the random number generator shall become ready for generation. If the random number generator requires a seed for setting up a new state, the seed must be provided by the consumer while invoking this function. The required size of the seed is defined with seedsize .

set_ent

: Set entropy that would otherwise be obtained from entropy source. Internal use only.

seedsize

: The seed size required for a random number generator initialization defined with this variable. Some random number generators does not require a seed as the seeding is implemented internally without the need of support by the consumer. In this case, the seed size is set to zero.

base

: Common crypto API algorithm data structure.

AUTHORS

Stephan Mueller <smueller [at] chronox.de>

: Author.

Marek Vasut <marek [at] denx.de>

: Author.

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