개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

RSA_public_encrypt(3)

RSA_public_encrypt(3)               OpenSSL              RSA_public_encrypt(3)

NAME
       RSA_public_encrypt, RSA_private_decrypt - RSA public key cryptography

SYNOPSIS
        #include <openssl/rsa.h>

        int RSA_public_encrypt(int flen, const unsigned char *from,
           unsigned char *to, RSA *rsa, int padding);

        int RSA_private_decrypt(int flen, const unsigned char *from,
            unsigned char *to, RSA *rsa, int padding);

DESCRIPTION
       RSA_public_encrypt() encrypts the flen bytes at from (usually a session
       key) using the public key rsa and stores the ciphertext in to. to must
       point to RSA_size(rsa) bytes of memory.

       padding denotes one of the following modes:

       RSA_PKCS1_PADDING
           PKCS #1 v1.5 padding. This currently is the most widely used mode.

       RSA_PKCS1_OAEP_PADDING
           EME-OAEP  as  defined in PKCS #1 v2.0 with SHA-1, MGF1 and an empty
           encoding  parameter.  This  mode  is  recommended   for   all   new
           applications.

       RSA_SSLV23_PADDING
           PKCS #1 v1.5 padding with an SSL-specific modification that denotes
           that the server is SSL3 capable.

       RSA_NO_PADDING
           Raw  RSA  encryption.  This  mode  should only be used to implement
           cryptographically sound padding  modes  in  the  application  code.
           Encrypting user data directly with RSA is insecure.

       flen  must  be  less than RSA_size(rsa) - 11 for the PKCS #1 v1.5 based
       padding modes, less than RSA_size(rsa) - 41 for  RSA_PKCS1_OAEP_PADDING
       and  exactly  RSA_size(rsa)  for  RSA_NO_PADDING.   The  random  number
       generator must be seeded prior to calling RSA_public_encrypt().

       RSA_private_decrypt() decrypts the flen bytes at from using the private
       key rsa and stores the plaintext in to.  to  must  point  to  a  memory
       section  large enough to hold the decrypted data (which is smaller than
       RSA_size(rsa)). padding is the padding mode that was  used  to  encrypt
       the data.

RETURN VALUES
       RSA_public_encrypt()  returns  the  size  of  the encrypted data (i.e.,
       RSA_size(rsa)). RSA_private_decrypt() returns the size of the recovered
       plaintext.

       On  error,  -1  is  returned;  the  error  codes  can  be  obtained  by
       ERR_get_error(3).

CONFORMING TO
       SSL, PKCS #1 v2.0

SEE ALSO
       ERR_get_error(3), rand(3), rsa(3), RSA_size(3)

HISTORY
       The  padding  argument  was  added  in  SSLeay  0.8.  RSA_NO_PADDING is
       available since SSLeay 0.9.0, OAEP was added in OpenSSL 0.9.2b.

1.0.2l                            2017-05-25             RSA_public_encrypt(3)