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37 lines
835 B
Plaintext
37 lines
835 B
Plaintext
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=pod
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=head1 NAME
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BN_rand - Generate pseudo-random number
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=head1 SYNOPSIS
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#include <openssl/bn.h>
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int BN_rand(BIGNUM *rnd, int bits, int top, int bottom);
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=head1 DESCRIPTION
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BN_rand() generates a cryptographically strong pseudo-random number of
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B<bits> bits in length and stores it in B<rnd>. If B<top> is true, the
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two most significant bits of the number will be set to 1, so that the
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product of two such random numbers will always have 2*B<bits> length.
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If B<bottom> is true, the number will be odd.
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The PRNG must be seeded prior to calling BN_rand().
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=head1 RETURN VALUES
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BN_rand() returns 1 on success, 0 on error.
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The error codes can be obtained by ERR_get_error(3).
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=head1 SEE ALSO
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bn(3), err(3), rand(3), RAND_add(), RAND_bytes()
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=head1 HISTORY
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BN_rand() is available in all versions of SSLeay and OpenSSL.
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=cut
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