RSA_sign(3openssl) OpenSSL RSA_sign(3openssl)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 iden-
tifier) 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.
OpenSSL-0.9.8 Oct 11 2005 RSA_sign(3openssl)
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RSA_sign(3SSL) OpenSSL RSA_sign(3SSL)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.
1.0.1e 2013-02-11 RSA_sign(3SSL)
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