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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/doc/crypto/RSA_sign.pod | |
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Diffstat (limited to 'openssl/doc/crypto/RSA_sign.pod')
-rw-r--r-- | openssl/doc/crypto/RSA_sign.pod | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/openssl/doc/crypto/RSA_sign.pod b/openssl/doc/crypto/RSA_sign.pod new file mode 100644 index 000000000..8553be8e9 --- /dev/null +++ b/openssl/doc/crypto/RSA_sign.pod @@ -0,0 +1,62 @@ +=pod + +=head1 NAME + +RSA_sign, RSA_verify - RSA signatures + +=head1 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); + +=head1 DESCRIPTION + +RSA_sign() signs the message digest B<m> of size B<m_len> using the +private key B<rsa> as specified in PKCS #1 v2.0. It stores the +signature in B<sigret> and the signature size in B<siglen>. B<sigret> +must point to RSA_size(B<rsa>) bytes of memory. + +B<type> denotes the message digest algorithm that was used to generate +B<m>. It usually is one of B<NID_sha1>, B<NID_ripemd160> and B<NID_md5>; +see L<objects(3)|objects(3)> for details. If B<type> is B<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 B<sigbuf> of size B<siglen> +matches a given message digest B<m> of size B<m_len>. B<type> denotes +the message digest algorithm that was used to generate the signature. +B<rsa> is the signer's public key. + +=head1 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 L<ERR_get_error(3)|ERR_get_error(3)>. + +=head1 BUGS + +Certain signatures with an improper algorithm identifier are accepted +for compatibility with SSLeay 0.4.5 :-) + +=head1 CONFORMING TO + +SSL, PKCS #1 v2.0 + +=head1 SEE ALSO + +L<ERR_get_error(3)|ERR_get_error(3)>, L<objects(3)|objects(3)>, +L<rsa(3)|rsa(3)>, L<RSA_private_encrypt(3)|RSA_private_encrypt(3)>, +L<RSA_public_decrypt(3)|RSA_public_decrypt(3)> + +=head1 HISTORY + +RSA_sign() and RSA_verify() are available in all versions of SSLeay +and OpenSSL. + +=cut |