Sortix nightly manual
This manual documents Sortix nightly, a development build that has not been officially released. You can instead view this document in the latest official manual.
|RSA_GENERATE_KEY(3)||Library Functions Manual||RSA_GENERATE_KEY(3)|
generate RSA key pair
RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb); Deprecated:
RSA_generate_key(int num, unsigned long e, void (*callback)(int, int, void *), void *cb_arg);
RSA_generate_key_ex() generates a key pair and stores it in rsa. The modulus size will be of length bits, and the public exponent will be e. Key sizes with num < 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 cb is not
NULL, it will be called as follows using the BN_GENCB_call(3) function:
- While a random prime number is generated, it is called as described in BN_generate_prime(3).
- When the n-th randomly generated prime is
rejected as not suitable for the key,
BN_GENCB_call(cb, 2, n) is called.
- When a random p has been found with p-1 relatively prime to
e, it is called as
BN_GENCB_call(cb, 3, 0).
BN_GENCB_call(cb, 3, 1).
RSA_generate_key() is deprecated. New applications should use
RSA_generate_key() works in the same way as
RSA_generate_key_ex() except it uses "old style" call backs. See BN_generate_prime(3) for further details.
RSA_generate_key_ex() returns 1 on success or 0 on error.
RSA_generate_key() returns the key on success or
NULLon error. The error codes can be obtained by ERR_get_error(3). BN_generate_prime(3), RSA_get0_key(3), RSA_meth_set_keygen(3), RSA_new(3)
RSA_generate_key() appeared in SSLeay 0.4 or earlier and had its cb_arg argument added in SSLeay 0.9.0. It has been available since OpenBSD 2.4.
RSA_generate_key_ex() first appeared in OpenSSL 0.9.8 and has been available since OpenBSD 4.5.
BN_GENCB_call(cb, 2, x) is used with two different meanings.
RSA_generate_key() goes into an infinite loop for illegal input values.
|June 10, 2019||Debian|