Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #727
Difficulty: Medium
Radia Perlman Invented the Spanning Tree Protocol (STP).
True or False?
Linux & Unix Commands - Search Man Pages

rsa_sign(3) [redhat man page]

RSA_sign(3)							      OpenSSL							       RSA_sign(3)

NAME
RSA_sign, RSA_verify - RSA signatures 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 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. 0.9.7a 2002-09-25 RSA_sign(3)

Check Out this Related Man Page

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)

Featured Tech Videos