RSA_sign(3)
- NetBSD Manual Pages
RSA_sign(3) OpenSSL RSA_sign(3)
NAME
RSA_sign, RSA_verify - RSA signatures
LIBRARY
libcrypto, -lcrypto
SYNOPSIS
#include <openssl/rsa.h>
int RSA_sign(int type, unsigned char *m, unsigned int m_len,
unsigned char *sigret, unsigned int *siglen, RSA *rsa);
int RSA_verify(int type, 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 mem-
ory.
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_ver-
ify() 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
openssl_err(3), objects(3), openssl_rsa(3), RSA_private_encrypt(3)
, RSA_public_decrypt(3)
HISTORY
RSA_sign() and RSA_verify() are available in all versions
2000-07-22 0.9.6g 1
RSA_sign(3) OpenSSL RSA_sign(3)
of SSLeay and OpenSSL.
2000-07-22 0.9.6g 2
Powered by man-cgi (2024-03-20).
Maintained for NetBSD
by Kimmo Suominen.
Based on man-cgi by Panagiotis Christias.