NAME¶
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.
SEE ALSO¶
EVP_PKEY_CTX_new(3),
EVP_PKEY_keygen(3)
HISTORY¶
These functions were first added to OpenSSL 1.0.0.