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#ifndef NCR_PK_H
# define NCR_PK_H
#include <tomcrypt.h>
struct ncr_pk_ctx {
ncr_algorithm_t algorithm; /* algorithm */
ncr_algorithm_t sign_hash; /* for verification */
ncr_algorithm_t oaep_hash;
int salt_len; /* for RSA-PSS signatures */
int type; /* libtomcrypt type */
int init; /* non zero if initialized */
struct key_item_st * key;
};
/* PK */
void ncr_pk_clear(struct key_item_st* key);
int ncr_pk_generate(ncr_algorithm_t algo,
struct ncr_key_generate_params_st * params,
struct key_item_st* private, struct key_item_st* public);
int ncr_pk_pack( const struct key_item_st * key, uint8_t * packed, uint32_t * packed_size);
int ncr_pk_unpack( struct key_item_st * key, const void * packed, size_t packed_size);
int ncr_pk_queue_init(void);
void ncr_pk_queue_deinit(void);
/* encryption/decryption */
int ncr_pk_cipher_init(ncr_algorithm_t algo,
struct ncr_pk_ctx* ctx, struct ncr_key_params_st* params,
struct key_item_st *key);
void ncr_pk_cipher_deinit(struct ncr_pk_ctx* ctx);
int ncr_pk_cipher_encrypt(const struct ncr_pk_ctx* ctx, const void* input,
size_t input_size, void* output, size_t *output_size);
int ncr_pk_cipher_decrypt(const struct ncr_pk_ctx* ctx, const void* input,
size_t input_size, void* output, size_t *output_size);
int ncr_pk_cipher_sign(const struct ncr_pk_ctx* ctx, const void* input,
size_t input_size, void* output, size_t *output_size);
int ncr_pk_cipher_verify(const struct ncr_pk_ctx* ctx,
const void* signature, size_t signature_size,
const void* hash, size_t hash_size, ncr_error_t*);
#endif
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