blob: 6d91039f45bf7d2cd9a95d83b39e536ae9c1aa45 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
=pod
=head1 NAME
EVP_PKEY_encrypt_init, EVP_PKEY_encrypt - encrypt using a public key algorithm
=head1 SYNOPSIS
#include <openssl/evp.h>
int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
unsigned char *out, size_t *outlen,
const unsigned char *in, size_t inlen);
=head1 DESCRIPTION
The EVP_PKEY_encrypt_init() function initializes a public key algorithm
context using key B<pkey> for an encryption operation.
The EVP_PKEY_encrypt() function performs a public key encryption operation
using B<ctx>. The data to be encrypted is specified using the B<in> and
B<inlen> parameters. If B<out> is B<NULL> then the maximum size of the output
buffer is written to the B<outlen> parameter. If B<out> is not B<NULL> then
before the call the B<outlen> parameter should contain the length of the
B<out> buffer, if the call is successful the encrypted data is written to
B<out> and the amount of data written to B<outlen>.
=head1 NOTES
After the call to EVP_PKEY_encrypt_init() algorithm specific control
operations can be performed to set any appropriate parameters for the
operation.
The function EVP_PKEY_encrypt() can be called more than once on the same
context if several operations are performed using the same parameters.
=head1 RETURN VALUES
EVP_PKEY_encrypt_init() and EVP_PKEY_encrypt() return 1 for success and 0
or a negative value for failure. In particular a return value of -2
indicates the operation is not supported by the public key algorithm.
=head1 EXAMPLE
Encrypt data using OAEP (for RSA keys):
[to be added]
=head1 SEE ALSO
L<EVP_PKEY_CTX_new(3)|EVP_PKEY_CTX_new(3)>,
L<EVP_PKEY_decrypt(3)|EVP_PKEY_decrypt(3)>,
L<EVP_PKEY_sign(3)|EVP_PKEY_sign(3)>,
L<EVP_PKEY_verify(3)|EVP_PKEY_verify(3)>,
L<EVP_PKEY_verifyrecover(3)|EVP_PKEY_verifyrecover(3)>,
L<EVP_PKEY_derive(3)|EVP_PKEY_derive(3)>
=head1 HISTORY
These functions were first added to OpenSSL 0.9.9.
=cut
|
