NAME
X509_digest,
X509_CRL_digest,
X509_pubkey_digest,
X509_NAME_digest,
X509_REQ_digest,
PKCS7_ISSUER_AND_SERIAL_digest —
get digests of various
objects
SYNOPSIS
#include
<openssl/x509.h>
int
X509_digest(const X509 *data,
const EVP_MD *type, unsigned char
*md, unsigned int *len);
int
X509_CRL_digest(const X509_CRL
*data, const EVP_MD *type,
unsigned char *md, unsigned int
*len);
int
X509_pubkey_digest(const X509
*data, const EVP_MD *type,
unsigned char *md, unsigned int
*len);
int
X509_REQ_digest(const X509_REQ
*data, const EVP_MD *type,
unsigned char *md, unsigned int
*len);
int
X509_NAME_digest(const X509_NAME
*data, const EVP_MD *type,
unsigned char *md, unsigned int
*len);
#include
<openssl/pkcs7.h>
int
PKCS7_ISSUER_AND_SERIAL_digest(PKCS7_ISSUER_AND_SERIAL
*data, const EVP_MD *type,
unsigned char *md, unsigned int
*len);
DESCRIPTION
X509_pubkey_digest()
returns a digest of the DER representation of the public key contained in
data. All other functions described here return a
digest of the DER representation of their entire data
object.
The type parameter specifies the digest to
be used, such as EVP_sha1(3). md is a pointer to the
buffer where the digest will be copied and is assumed to be large enough; a
size of at least EVP_MAX_MD_SIZE bytes is suggested.
The len parameter, if not
NULL, points to a place where the digest size will
be stored.
RETURN VALUES
These functions return 1 for success or 0 for failure.
SEE ALSO
EVP_get_digestbyname(3), X509_cmp(3), X509_CRL_new(3), X509_NAME_new(3), X509_new(3), X509_REQ_new(3)
HISTORY
X509_digest(),
X509_NAME_digest(), and
PKCS7_ISSUER_AND_SERIAL_digest() first appeared in
SSLeay 0.6.5 and have been available since OpenBSD
2.4.
X509_CRL_digest() and
X509_REQ_digest() first appeared in OpenSSL 0.9.6
and have been available since OpenBSD 2.9.
X509_pubkey_digest() first appeared in
OpenSSL 0.9.7 and has been available since OpenBSD
3.2.