EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params -- public key algorithm printing routines.
Synopsis
#include <openssl/evp.h>
int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
int indent, ASN1_PCTX *pctx);
int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
int indent, ASN1_PCTX *pctx);
int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
int indent, ASN1_PCTX *pctx);
DESCRIPTION
The functions EVP_PKEY_print_public(), EVP_PKEY_print_private() and
EVP_PKEY_print_params() print out the public, private or parameter
components of key pkey respectively.
The key is sent to BIO out in human
readable form. The parameter indent
indicated how far the printout should be indented.
The pctx parameter allows the print
output to be finely tuned by using ASN1 printing options. If
pctx is set to NULL then default
values will be used.
NOTES
Currently no public key algorithms include any options in the
pctx parameter parameter.
If the key does not include all the components indicated by the
function then only those contained in the key will be printed. For
example passing a public key to EVP_PKEY_print_private() will only
print the public components.
RETURN VALUES
These functions all return 1 for success and 0 or a negative value
for failure. In particular a return value of -2 indicates the
operation is not supported by the public key algorithm.
