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#ifndef _IPXE_RSA_H
#define _IPXE_RSA_H
/** @file
*
* RSA public-key cryptography
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdarg.h>
#include <ipxe/crypto.h>
#include <ipxe/bigint.h>
#include <ipxe/asn1.h>
#include <ipxe/tables.h>
/** RSA digestAlgorithm sequence contents */
#define RSA_DIGESTALGORITHM_CONTENTS( ... ) \
ASN1_OID, VA_ARG_COUNT ( __VA_ARGS__ ), __VA_ARGS__, \
ASN1_NULL, 0x00
/** RSA digestAlgorithm sequence */
#define RSA_DIGESTALGORITHM( ... ) \
ASN1_SEQUENCE, \
VA_ARG_COUNT ( RSA_DIGESTALGORITHM_CONTENTS ( __VA_ARGS__ ) ), \
RSA_DIGESTALGORITHM_CONTENTS ( __VA_ARGS__ )
/** RSA digest prefix */
#define RSA_DIGEST_PREFIX( digest_size ) \
ASN1_OCTET_STRING, digest_size
/** RSA digestInfo prefix */
#define RSA_DIGESTINFO_PREFIX( digest_size, ... ) \
ASN1_SEQUENCE, \
( VA_ARG_COUNT ( RSA_DIGESTALGORITHM ( __VA_ARGS__ ) ) + \
VA_ARG_COUNT ( RSA_DIGEST_PREFIX ( digest_size ) ) + \
digest_size ), \
RSA_DIGESTALGORITHM ( __VA_ARGS__ ), \
RSA_DIGEST_PREFIX ( digest_size )
/** An RSA digestInfo prefix */
struct rsa_digestinfo_prefix {
/** Digest algorithm */
struct digest_algorithm *digest;
/** Prefix */
const void *data;
/** Length of prefix */
size_t len;
};
/** RSA digestInfo prefix table */
#define RSA_DIGESTINFO_PREFIXES \
__table ( struct rsa_digestinfo_prefix, "rsa_digestinfo_prefixes" )
/** Declare an RSA digestInfo prefix */
#define __rsa_digestinfo_prefix __table_entry ( RSA_DIGESTINFO_PREFIXES, 01 )
/** An RSA context */
struct rsa_context {
/** Allocated memory */
void *dynamic;
/** Modulus */
bigint_element_t *modulus0;
/** Modulus size */
unsigned int size;
/** Modulus length */
size_t max_len;
/** Exponent */
bigint_element_t *exponent0;
/** Exponent size */
unsigned int exponent_size;
/** Input buffer */
bigint_element_t *input0;
/** Output buffer */
bigint_element_t *output0;
/** Temporary working space for modular exponentiation */
void *tmp;
};
/** RSA context size */
#define RSA_CTX_SIZE sizeof ( struct rsa_context )
extern struct pubkey_algorithm rsa_algorithm;
#endif /* _IPXE_RSA_H */
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