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RSA_verify (3)
  • >> RSA_verify (3) ( Разные man: Библиотечные вызовы )
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    NAME

    RSA_sign, RSA_verify - RSA signatures
     
    

    SYNOPSIS

     #include <openssl/rsa.h>
    
    

     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);
    
    
     

    DESCRIPTION

    RSA_sign() signs the message digest m of size m_len using the private key rsa as specified in PKCS #1 v2.0. It stores the signature in sigret and the signature size in siglen. sigret must point to RSA_size(rsa) bytes of memory.

    type denotes the message digest algorithm that was used to generate m. It usually is one of NID_sha1, NID_ripemd160 and NID_md5; see objects(3) for details. If type is NID_md5_sha1, an SSL signature (MD5 and SHA1 message digests with PKCS #1 padding and no algorithm identifier) is created.

    RSA_verify() verifies that the signature sigbuf of size siglen matches a given message digest m of size m_len. type denotes the message digest algorithm that was used to generate the signature. rsa is the signer's public key.  

    RETURN VALUES

    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).  

    BUGS

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

    CONFORMING TO

    SSL, PKCS #1 v2.0  

    SEE ALSO

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

    HISTORY

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


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    BUGS
    CONFORMING TO
    SEE ALSO
    HISTORY


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