/*
 * This header declares the necessary definitions for using the
 * exponentiation acceleration capabilities of Atalla cards. The only
 * cryptographic operation is performed by "ASI_RSAPrivateKeyOpFn" and this
 * takes a structure that defines an "RSA private key". However, it is really
 * only performing a regular mod_exp using the supplied modulus and exponent
 * - no CRT form is being used. Hence, it is a generic mod_exp function in
 * disguise, and we use it as such. Thanks to the people at Atalla for
 * letting me know these definitions are fine and that they can be reproduced
 * here. Geoff.
 */

typedef struct ItemStr {
    unsigned char *data;
    int len;
} Item;

typedef struct RSAPrivateKeyStr {
    void *reserved;
    Item version;
    Item modulus;
    Item publicExponent;
    Item privateExponent;
    Item prime[2];
    Item exponent[2];
    Item coefficient;
} RSAPrivateKey;

/*
 * Predeclare the function pointer types that we dynamically load from the
 * DSO. These use the same names and form that Ben's original support code
 * had (in crypto/bn/bn_exp.c) unless of course I've inadvertently changed
 * the style somewhere along the way!
 */

typedef int tfnASI_GetPerformanceStatistics(int reset_flag,
                                            unsigned int *ret_buf);

typedef int tfnASI_GetHardwareConfig(long card_num, unsigned int *ret_buf);

typedef int tfnASI_RSAPrivateKeyOpFn(RSAPrivateKey * rsaKey,
                                     unsigned char *output,
                                     unsigned char *input,
                                     unsigned int modulus_len);