Manual Pages for UNIX Operating System command usage for man RSA_sign

OpenSSL                                        RSA_sign(3openssl)



NNNNAAAAMMMMEEEE
     RSA_sign, RSA_verify - RSA signatures

SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
      #include 

      int RSA_sign(int type, const unsigned char *m, unsigned int m_len,
         unsigned char *sigret, unsigned int *siglen, RSA *rsa);

      int RSA_verify(int type, const unsigned char *m, unsigned int m_len,
         unsigned char *sigbuf, unsigned int siglen, RSA *rsa);


DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
     RSA_sign() signs the message digest mmmm of size mmmm_lllleeeennnn using
     the private key rrrrssssaaaa as specified in PKCS #1 v2.0. It stores
     the signature in ssssiiiiggggrrrreeeetttt and the signature size in ssssiiiigggglllleeeennnn.
     ssssiiiiggggrrrreeeetttt must point to RSA_size(rrrrssssaaaa) bytes of memory.

     ttttyyyyppppeeee denotes the message digest algorithm that was used to
     generate mmmm. It usually is one of NNNNIIIIDDDD_sssshhhhaaaa1111, NNNNIIIIDDDD_rrrriiiippppeeeemmmmdddd111166660000 and
     NNNNIIIIDDDD_mmmmdddd5555; see objects(3) for details. If ttttyyyyppppeeee is
     NNNNIIIIDDDD_mmmmdddd5555_sssshhhhaaaa1111, an SSL signature (MD5 and SHA1 message digests
     with PKCS #1 padding and no algorithm identifier) is
     created.

     RSA_verify() verifies that the signature ssssiiiiggggbbbbuuuuffff of size
     ssssiiiigggglllleeeennnn matches a given message digest mmmm of size mmmm_lllleeeennnn. ttttyyyyppppeeee
     denotes the message digest algorithm that was used to
     generate the signature.  rrrrssssaaaa is the signer's public key.

RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEESSSS
     RSA_sign() returns 1 on success, 0 otherwise.  RSA_verify()
     returns 1 on successful verification, 0 otherwise.

     The error codes can be obtained by ERR_get_error(3).

BBBBUUUUGGGGSSSS
     Certain signatures with an improper algorithm identifier are
     accepted for compatibility with SSLeay 0.4.5 :-)

CCCCOOOONNNNFFFFOOOORRRRMMMMIIIINNNNGGGG TTTTOOOO
     SSL, PKCS #1 v2.0

SSSSEEEEEEEE AAAALLLLSSSSOOOO
     ERR_get_error(3), objects(3), rsa(3),
     RSA_private_encrypt(3), RSA_public_decrypt(3)

HHHHIIIISSSSTTTTOOOORRRRYYYY
     RSA_sign() and RSA_verify() are available in all versions of
     SSLeay and OpenSSL.




21/Apr/2005            Last change: 0.9.8o                      1






OpenSSL                                        RSA_sign(3openssl)























































21/Apr/2005            Last change: 0.9.8o                      2