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Diffstat (limited to 'openssl-1.1.0h/doc/crypto/RSA_generate_key.pod')
-rw-r--r-- | openssl-1.1.0h/doc/crypto/RSA_generate_key.pod | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/openssl-1.1.0h/doc/crypto/RSA_generate_key.pod b/openssl-1.1.0h/doc/crypto/RSA_generate_key.pod new file mode 100644 index 0000000..e51c0b1 --- /dev/null +++ b/openssl-1.1.0h/doc/crypto/RSA_generate_key.pod @@ -0,0 +1,88 @@ +=pod + +=head1 NAME + +RSA_generate_key_ex, RSA_generate_key - generate RSA key pair + +=head1 SYNOPSIS + + #include <openssl/rsa.h> + + int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb); + +Deprecated: + + #if OPENSSL_API_COMPAT < 0x00908000L + RSA *RSA_generate_key(int num, unsigned long e, + void (*callback)(int, int, void *), void *cb_arg); + #endif + +=head1 DESCRIPTION + +RSA_generate_key_ex() generates a key pair and stores it in the B<RSA> +structure provided in B<rsa>. The pseudo-random number generator must +be seeded prior to calling RSA_generate_key_ex(). + +The modulus size will be of length B<bits>, and the public exponent will be +B<e>. Key sizes with B<num> E<lt> 1024 should be considered insecure. +The exponent is an odd number, typically 3, 17 or 65537. + +A callback function may be used to provide feedback about the +progress of the key generation. If B<cb> is not B<NULL>, it +will be called as follows using the BN_GENCB_call() function +described on the L<BN_generate_prime(3)> page. + +=over 2 + +=item * + +While a random prime number is generated, it is called as +described in L<BN_generate_prime(3)>. + +=item * + +When the n-th randomly generated prime is rejected as not +suitable for the key, B<BN_GENCB_call(cb, 2, n)> is called. + +=item * + +When a random p has been found with p-1 relatively prime to B<e>, +it is called as B<BN_GENCB_call(cb, 3, 0)>. + +=back + +The process is then repeated for prime q with B<BN_GENCB_call(cb, 3, 1)>. + +RSA_generate_key() is deprecated (new applications should use +RSA_generate_key_ex() instead). RSA_generate_key() works in the same way as +RSA_generate_key_ex() except it uses "old style" call backs. See +L<BN_generate_prime(3)> for further details. + +=head1 RETURN VALUE + +RSA_generate_key_ex() returns 1 on success or 0 on error. +RSA_generate_key() returns the key on success or B<NULL> on error. + +The error codes can be obtained by L<ERR_get_error(3)>. + +=head1 BUGS + +B<BN_GENCB_call(cb, 2, x)> is used with two different meanings. + +RSA_generate_key() goes into an infinite loop for illegal input values. + +=head1 SEE ALSO + +L<ERR_get_error(3)>, L<RAND_bytes(3)>, +L<RSA_generate_key(3)>, L<BN_generate_prime(3)> + +=head1 COPYRIGHT + +Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. + +Licensed under the OpenSSL license (the "License"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file LICENSE in the source distribution or at +L<https://www.openssl.org/source/license.html>. + +=cut |