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8.4 Random number generation
Access to the random number generator is provided using the gnutls_rnd function. It allows obtaining random data of various levels.
GNUTLS_RND_NONCENon-predictable random number. Fatal in parts of session if broken, i.e., vulnerable to statistical analysis.
GNUTLS_RND_RANDOMPseudo-random cryptographic random number. Fatal in session if broken.
GNUTLS_RND_KEYFatal in many sessions if broken.
Figure 8.1: The random number levels.
- Function: int gnutls_rnd (gnutls_rnd_level_t level, void * data, size_t len)
level: a security level
data: place to store random bytes
len: The requested size
This function will generate random data and store it to output buffer.
Returns: Zero or a negative error code on error.
Since: 2.12.0
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