RSA_sign

- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUES
- CONFORMING TO
- SEE ALSO
- COPYRIGHT

# 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 using RSASSA-PKCS1-v1_5 as specified in RFC 3447. It stores the signature in sigret and the signature size in siglen. sigret must point to RSA_size(rsa) bytes of memory. Note that PKCS #1 adds meta-data, placing limits on the size of the key that can be used. See RETURN VALUES

RSA_sign() returns 1 on success. RSA_verify() returns 1 on successful verification.

The error codes can be obtained by CONFORMING TO

SSL, PKCS #1 v2.0

# SEE ALSO

RSA_private_encrypt(3), COPYRIGHT

Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.