d2i_ECPKParameters (3)
Leading comments
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NAME
d2i_ECPKParameters, i2d_ECPKParameters, d2i_ECPKParameters_bio, i2d_ECPKParameters_bio, d2i_ECPKParameters_fp, i2d_ECPKParameters_fp, ECPKParameters_print, ECPKParameters_print_fp - Functions for decoding and encoding ASN1 representations of elliptic curve entitiesSYNOPSIS
#include <openssl/ec.h>
EC_GROUP *d2i_ECPKParameters(EC_GROUP **px, const unsigned char **in, long len);
int i2d_ECPKParameters(const EC_GROUP *x, unsigned char **out);
#define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x)
#define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x)
#define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
(char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
#define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
(unsigned char *)(x))
int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
DESCRIPTION
The ECPKParameters encode and decode routines encode and parse the public parameters for and2i_ECPKParameters() attempts to decode len bytes at *in. If successful a pointer to the
i2d_ECPKParameters() encodes the structure pointed to by x into
If *out is
d2i_ECPKParameters_bio() is similar to d2i_ECPKParameters() except it attempts to parse data from
d2i_ECPKParameters_fp() is similar to d2i_ECPKParameters() except it attempts to parse data from
i2d_ECPKParameters_bio() is similar to i2d_ECPKParameters() except it writes the encoding of the structure x to
i2d_ECPKParameters_fp() is similar to i2d_ECPKParameters() except it writes the encoding of the structure x to
These functions are very similar to the X509 functions described in d2i_X509(3), where further notes and examples are available.
The ECPKParameters_print and ECPKParameters_print_fp functions print a human-readable output of the public parameters of the
RETURN VALUES
d2i_ECPKParameters(), d2i_ECPKParameters_bio() and d2i_ECPKParameters_fp() return a validi2d_ECPKParameters() returns the number of bytes successfully encoded or a negative value if an error occurs.
i2d_ECPKParameters_bio(), i2d_ECPKParameters_fp(), ECPKParameters_print and ECPKParameters_print_fp return 1 for success and 0 if an error occurs.