|
|
RSA_padding_add_PKCS1_type_1(3)
Contents
|
RSA_padding_add_PKCS1_type_1,
RSA_padding_check_PKCS1_type_1,
RSA_padding_add_PKCS1_type_2,
RSA_padding_check_PKCS1_type_2,
RSA_padding_add_PKCS1_OAEP, RSA_padding_check_PKCS1_OAEP,
RSA_padding_add_SSLv23, RSA_padding_check_SSLv23,
RSA_padding_add_none, RSA_padding_check_none - Asymmetric
encryption padding
#include <openssl/rsa.h>
int RSA_padding_add_PKCS1_type_1(
unsigned char *to, int tlen, unsigned char *f, int
fl ); int RSA_padding_check_PKCS1_type_1(
unsigned char *to, int tlen, unsigned char *f, int
fl, int rsa_len ); int RSA_padding_add_PKCS1_type_2(
unsigned char *to, int tlen, unsigned char *f, int
fl ); int RSA_padding_check_PKCS1_type_2(
unsigned char *to, int tlen, unsigned char *f, int
fl, int rsa_len ); int RSA_padding_add_PKCS1_OAEP(
unsigned char *to, int tlen, unsigned char *f, int
fl, unsigned char *p, int pl ); int
RSA_padding_check_PKCS1_OAEP(
unsigned char *to, int tlen, unsigned char *f, int
fl, int rsa_len, unsigned char *p, int pl ); int
RSA_padding_add_SSLv23(
unsigned char *to, int tlen, unsigned char *f, int
fl ); int RSA_padding_check_SSLv23(
unsigned char *to, int tlen, unsigned char *f, int
fl, int rsa_len ); int RSA_padding_add_none(
unsigned char *to, int tlen, unsigned char *f, int
fl ); int RSA_padding_check_none(
unsigned char *to, int tlen, unsigned char *f, int
fl, int rsa_len );
The RSA_padding_xxx_xxx() functions are called from the
RSA encrypt, decrypt, sign and verify functions. Normally
they should not be called from application programs.
However, they can also be called directly to implement
padding for other asymmetric ciphers. The
RSA_padding_add_PKCS1_OAEP() and
RSA_padding_check_PKCS1_OAEP() function can be used in an
application combined with RSA_NO_PADDING in order to
implement OAEP with an encoding parameter.
The RSA_padding_add_xxx() functions encode fl bytes from f
so as to fit into tlen bytes and stores the result at to.
An error occurs if fl does not meet the size requirements
of the encoding method.
The following encoding methods are implemented:
PKCS1_type_1
PKCS #1 v2.0 EMSA-PKCS1-v1_5 (PKCS #1 v1.5 block
type 1); used for signatures PKCS1_type_2
PKCS #1 v2.0 EME-PKCS1-v1_5 (PKCS #1 v1.5 block
type 2) PKCS1_OAEP
PKCS #1 v2.0 EME-OAEP SSLv23
PKCS #1 EME-PKCS1-v1_5 with SSL-specific modification
none
simply copy the data
The random number generator must be seeded prior to calling
the RSA_padding_add_xxx() functions.
The RSA_padding_check_xxx() functions verify that the fl
bytes at f contain a valid encoding for an rsa_len byte
RSA key in the respective encoding method. It then stores
the recovered data of at most tlen bytes (for
RSA_NO_PADDING: of size tlen) at to.
For RSA_padding_xxx_OAEP(), p points to the encoding
parameter of length pl. The p may be NULL if pl is 0.
The RSA_padding_add_xxx() functions return 1 on success, 0
on error. The RSA_padding_check_xxx() functions return the
length of the recovered data, -1 on error. Error codes can
be obtained by calling ERR_get_error().
The RSA_padding_add_PKCS1_type_1(),
RSA_padding_check_PKCS1_type_1(),
RSA_padding_add_PKCS1_type_2(),
RSA_padding_check_PKCS1_type_2(),
RSA_padding_add_SSLv23(), RSA_padding_check_SSLv23(),
RSA_padding_add_none(), and RSA_padding_check_none() functions
appeared in SSLeay 0.9.0.
The RSA_padding_add_PKCS1_OAEP() and
RSA_padding_check_PKCS1_OAEP() functions were added in
OpenSSL 0.9.2b.
Functions: RSA_public_encrypt(3), RSA_private_decrypt(3),
RSA_sign(3), RSA_verify(3)
RSA_padding_add_PKCS1_type_1(3)
[ Back ] |
